sta: fix reconnect ap when ap lost

Signed-off-by: YoungSoo Shin <shinys000114@gmail.com>
update readme
2025-12-05 12:19:20 +09:00 · 2025-11-20 09:31:59 +09:00 · 2025-11-20 09:08:32 +09:00 · 2025-11-20 09:07:34 +09:00 · 2025-11-20 08:57:14 +09:00 · 2025-11-19 16:26:44 +09:00
57 changed files with 2885 additions and 808 deletions
--- a/674
+++ b/674
@@ -0,0 +1,674 @@
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+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.
--- a/LICENSE.md
+++ b/LICENSE.md
@@ -0,0 +1,675 @@
+# GNU GENERAL PUBLIC LICENSE
+
+Version 3, 29 June 2007
+
+Copyright (C) 2007 Free Software Foundation, Inc.
+<https://fsf.org/>
+
+Everyone is permitted to copy and distribute verbatim copies of this
+license document, but changing it is not allowed.
+
+## Preamble
+
+The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works. By contrast,
+the GNU General Public License is intended to guarantee your freedom
+to share and change all versions of a program--to make sure it remains
+free software for all its users. We, the Free Software Foundation, use
+the GNU General Public License for most of our software; it applies
+also to any other work released this way by its authors. You can apply
+it to your programs, too.
+
+When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+To protect your rights, we need to prevent others from denying you
+these rights or asking you to surrender the rights. Therefore, you
+have certain responsibilities if you distribute copies of the
+software, or if you modify it: responsibilities to respect the freedom
+of others.
+
+For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must pass on to the recipients the same
+freedoms that you received. You must make sure that they, too, receive
+or can get the source code. And you must show them these terms so they
+know their rights.
+
+Developers that use the GNU GPL protect your rights with two steps:
+(1) assert copyright on the software, and (2) offer you this License
+giving you legal permission to copy, distribute and/or modify it.
+
+For the developers' and authors' protection, the GPL clearly explains
+that there is no warranty for this free software. For both users' and
+authors' sake, the GPL requires that modified versions be marked as
+changed, so that their problems will not be attributed erroneously to
+authors of previous versions.
+
+Some devices are designed to deny users access to install or run
+modified versions of the software inside them, although the
+manufacturer can do so. This is fundamentally incompatible with the
+aim of protecting users' freedom to change the software. The
+systematic pattern of such abuse occurs in the area of products for
+individuals to use, which is precisely where it is most unacceptable.
+Therefore, we have designed this version of the GPL to prohibit the
+practice for those products. If such problems arise substantially in
+other domains, we stand ready to extend this provision to those
+domains in future versions of the GPL, as needed to protect the
+freedom of users.
+
+Finally, every program is threatened constantly by software patents.
+States should not allow patents to restrict development and use of
+software on general-purpose computers, but in those that do, we wish
+to avoid the special danger that patents applied to a free program
+could make it effectively proprietary. To prevent this, the GPL
+assures that patents cannot be used to render the program non-free.
+
+The precise terms and conditions for copying, distribution and
+modification follow.
+
+## TERMS AND CONDITIONS
+
+### 0. Definitions.
+
+"This License" refers to version 3 of the GNU General Public License.
+
+"Copyright" also means copyright-like laws that apply to other kinds
+of works, such as semiconductor masks.
+
+"The Program" refers to any copyrightable work licensed under this
+License. Each licensee is addressed as "you". "Licensees" and
+"recipients" may be individuals or organizations.
+
+To "modify" a work means to copy from or adapt all or part of the work
+in a fashion requiring copyright permission, other than the making of
+an exact copy. The resulting work is called a "modified version" of
+the earlier work or a work "based on" the earlier work.
+
+A "covered work" means either the unmodified Program or a work based
+on the Program.
+
+To "propagate" a work means to do anything with it that, without
+permission, would make you directly or secondarily liable for
+infringement under applicable copyright law, except executing it on a
+computer or modifying a private copy. Propagation includes copying,
+distribution (with or without modification), making available to the
+public, and in some countries other activities as well.
+
+To "convey" a work means any kind of propagation that enables other
+parties to make or receive copies. Mere interaction with a user
+through a computer network, with no transfer of a copy, is not
+conveying.
+
+An interactive user interface displays "Appropriate Legal Notices" to
+the extent that it includes a convenient and prominently visible
+feature that (1) displays an appropriate copyright notice, and (2)
+tells the user that there is no warranty for the work (except to the
+extent that warranties are provided), that licensees may convey the
+work under this License, and how to view a copy of this License. If
+the interface presents a list of user commands or options, such as a
+menu, a prominent item in the list meets this criterion.
+
+### 1. Source Code.
+
+The "source code" for a work means the preferred form of the work for
+making modifications to it. "Object code" means any non-source form of
+a work.
+
+A "Standard Interface" means an interface that either is an official
+standard defined by a recognized standards body, or, in the case of
+interfaces specified for a particular programming language, one that
+is widely used among developers working in that language.
+
+The "System Libraries" of an executable work include anything, other
+than the work as a whole, that (a) is included in the normal form of
+packaging a Major Component, but which is not part of that Major
+Component, and (b) serves only to enable use of the work with that
+Major Component, or to implement a Standard Interface for which an
+implementation is available to the public in source code form. A
+"Major Component", in this context, means a major essential component
+(kernel, window system, and so on) of the specific operating system
+(if any) on which the executable work runs, or a compiler used to
+produce the work, or an object code interpreter used to run it.
+
+The "Corresponding Source" for a work in object code form means all
+the source code needed to generate, install, and (for an executable
+work) run the object code and to modify the work, including scripts to
+control those activities. However, it does not include the work's
+System Libraries, or general-purpose tools or generally available free
+programs which are used unmodified in performing those activities but
+which are not part of the work. For example, Corresponding Source
+includes interface definition files associated with source files for
+the work, and the source code for shared libraries and dynamically
+linked subprograms that the work is specifically designed to require,
+such as by intimate data communication or control flow between those
+subprograms and other parts of the work.
+
+The Corresponding Source need not include anything that users can
+regenerate automatically from other parts of the Corresponding Source.
+
+The Corresponding Source for a work in source code form is that same
+work.
+
+### 2. Basic Permissions.
+
+All rights granted under this License are granted for the term of
+copyright on the Program, and are irrevocable provided the stated
+conditions are met. This License explicitly affirms your unlimited
+permission to run the unmodified Program. The output from running a
+covered work is covered by this License only if the output, given its
+content, constitutes a covered work. This License acknowledges your
+rights of fair use or other equivalent, as provided by copyright law.
+
+You may make, run and propagate covered works that you do not convey,
+without conditions so long as your license otherwise remains in force.
+You may convey covered works to others for the sole purpose of having
+them make modifications exclusively for you, or provide you with
+facilities for running those works, provided that you comply with the
+terms of this License in conveying all material for which you do not
+control copyright. Those thus making or running the covered works for
+you must do so exclusively on your behalf, under your direction and
+control, on terms that prohibit them from making any copies of your
+copyrighted material outside their relationship with you.
+
+Conveying under any other circumstances is permitted solely under the
+conditions stated below. Sublicensing is not allowed; section 10 makes
+it unnecessary.
+
+### 3. Protecting Users' Legal Rights From Anti-Circumvention Law.
+
+No covered work shall be deemed part of an effective technological
+measure under any applicable law fulfilling obligations under article
+11 of the WIPO copyright treaty adopted on 20 December 1996, or
+similar laws prohibiting or restricting circumvention of such
+measures.
+
+When you convey a covered work, you waive any legal power to forbid
+circumvention of technological measures to the extent such
+circumvention is effected by exercising rights under this License with
+respect to the covered work, and you disclaim any intention to limit
+operation or modification of the work as a means of enforcing, against
+the work's users, your or third parties' legal rights to forbid
+circumvention of technological measures.
+
+### 4. Conveying Verbatim Copies.
+
+You may convey verbatim copies of the Program's source code as you
+receive it, in any medium, provided that you conspicuously and
+appropriately publish on each copy an appropriate copyright notice;
+keep intact all notices stating that this License and any
+non-permissive terms added in accord with section 7 apply to the code;
+keep intact all notices of the absence of any warranty; and give all
+recipients a copy of this License along with the Program.
+
+You may charge any price or no price for each copy that you convey,
+and you may offer support or warranty protection for a fee.
+
+### 5. Conveying Modified Source Versions.
+
+You may convey a work based on the Program, or the modifications to
+produce it from the Program, in the form of source code under the
+terms of section 4, provided that you also meet all of these
+conditions:
+
+- a) The work must carry prominent notices stating that you modified
+  it, and giving a relevant date.
+- b) The work must carry prominent notices stating that it is
+  released under this License and any conditions added under
+  section 7. This requirement modifies the requirement in section 4
+  to "keep intact all notices".
+- c) You must license the entire work, as a whole, under this
+  License to anyone who comes into possession of a copy. This
+  License will therefore apply, along with any applicable section 7
+  additional terms, to the whole of the work, and all its parts,
+  regardless of how they are packaged. This License gives no
+  permission to license the work in any other way, but it does not
+  invalidate such permission if you have separately received it.
+- d) If the work has interactive user interfaces, each must display
+  Appropriate Legal Notices; however, if the Program has interactive
+  interfaces that do not display Appropriate Legal Notices, your
+  work need not make them do so.
+
+A compilation of a covered work with other separate and independent
+works, which are not by their nature extensions of the covered work,
+and which are not combined with it such as to form a larger program,
+in or on a volume of a storage or distribution medium, is called an
+"aggregate" if the compilation and its resulting copyright are not
+used to limit the access or legal rights of the compilation's users
+beyond what the individual works permit. Inclusion of a covered work
+in an aggregate does not cause this License to apply to the other
+parts of the aggregate.
+
+### 6. Conveying Non-Source Forms.
+
+You may convey a covered work in object code form under the terms of
+sections 4 and 5, provided that you also convey the machine-readable
+Corresponding Source under the terms of this License, in one of these
+ways:
+
+- a) Convey the object code in, or embodied in, a physical product
+  (including a physical distribution medium), accompanied by the
+  Corresponding Source fixed on a durable physical medium
+  customarily used for software interchange.
+- b) Convey the object code in, or embodied in, a physical product
+  (including a physical distribution medium), accompanied by a
+  written offer, valid for at least three years and valid for as
+  long as you offer spare parts or customer support for that product
+  model, to give anyone who possesses the object code either (1) a
+  copy of the Corresponding Source for all the software in the
+  product that is covered by this License, on a durable physical
+  medium customarily used for software interchange, for a price no
+  more than your reasonable cost of physically performing this
+  conveying of source, or (2) access to copy the Corresponding
+  Source from a network server at no charge.
+- c) Convey individual copies of the object code with a copy of the
+  written offer to provide the Corresponding Source. This
+  alternative is allowed only occasionally and noncommercially, and
+  only if you received the object code with such an offer, in accord
+  with subsection 6b.
+- d) Convey the object code by offering access from a designated
+  place (gratis or for a charge), and offer equivalent access to the
+  Corresponding Source in the same way through the same place at no
+  further charge. You need not require recipients to copy the
+  Corresponding Source along with the object code. If the place to
+  copy the object code is a network server, the Corresponding Source
+  may be on a different server (operated by you or a third party)
+  that supports equivalent copying facilities, provided you maintain
+  clear directions next to the object code saying where to find the
+  Corresponding Source. Regardless of what server hosts the
+  Corresponding Source, you remain obligated to ensure that it is
+  available for as long as needed to satisfy these requirements.
+- e) Convey the object code using peer-to-peer transmission,
+  provided you inform other peers where the object code and
+  Corresponding Source of the work are being offered to the general
+  public at no charge under subsection 6d.
+
+A separable portion of the object code, whose source code is excluded
+from the Corresponding Source as a System Library, need not be
+included in conveying the object code work.
+
+A "User Product" is either (1) a "consumer product", which means any
+tangible personal property which is normally used for personal,
+family, or household purposes, or (2) anything designed or sold for
+incorporation into a dwelling. In determining whether a product is a
+consumer product, doubtful cases shall be resolved in favor of
+coverage. For a particular product received by a particular user,
+"normally used" refers to a typical or common use of that class of
+product, regardless of the status of the particular user or of the way
+in which the particular user actually uses, or expects or is expected
+to use, the product. A product is a consumer product regardless of
+whether the product has substantial commercial, industrial or
+non-consumer uses, unless such uses represent the only significant
+mode of use of the product.
+
+"Installation Information" for a User Product means any methods,
+procedures, authorization keys, or other information required to
+install and execute modified versions of a covered work in that User
+Product from a modified version of its Corresponding Source. The
+information must suffice to ensure that the continued functioning of
+the modified object code is in no case prevented or interfered with
+solely because modification has been made.
+
+If you convey an object code work under this section in, or with, or
+specifically for use in, a User Product, and the conveying occurs as
+part of a transaction in which the right of possession and use of the
+User Product is transferred to the recipient in perpetuity or for a
+fixed term (regardless of how the transaction is characterized), the
+Corresponding Source conveyed under this section must be accompanied
+by the Installation Information. But this requirement does not apply
+if neither you nor any third party retains the ability to install
+modified object code on the User Product (for example, the work has
+been installed in ROM).
+
+The requirement to provide Installation Information does not include a
+requirement to continue to provide support service, warranty, or
+updates for a work that has been modified or installed by the
+recipient, or for the User Product in which it has been modified or
+installed. Access to a network may be denied when the modification
+itself materially and adversely affects the operation of the network
+or violates the rules and protocols for communication across the
+network.
+
+Corresponding Source conveyed, and Installation Information provided,
+in accord with this section must be in a format that is publicly
+documented (and with an implementation available to the public in
+source code form), and must require no special password or key for
+unpacking, reading or copying.
+
+### 7. Additional Terms.
+
+"Additional permissions" are terms that supplement the terms of this
+License by making exceptions from one or more of its conditions.
+Additional permissions that are applicable to the entire Program shall
+be treated as though they were included in this License, to the extent
+that they are valid under applicable law. If additional permissions
+apply only to part of the Program, that part may be used separately
+under those permissions, but the entire Program remains governed by
+this License without regard to the additional permissions.
+
+When you convey a copy of a covered work, you may at your option
+remove any additional permissions from that copy, or from any part of
+it. (Additional permissions may be written to require their own
+removal in certain cases when you modify the work.) You may place
+additional permissions on material, added by you to a covered work,
+for which you have or can give appropriate copyright permission.
+
+Notwithstanding any other provision of this License, for material you
+add to a covered work, you may (if authorized by the copyright holders
+of that material) supplement the terms of this License with terms:
+
+- a) Disclaiming warranty or limiting liability differently from the
+  terms of sections 15 and 16 of this License; or
+- b) Requiring preservation of specified reasonable legal notices or
+  author attributions in that material or in the Appropriate Legal
+  Notices displayed by works containing it; or
+- c) Prohibiting misrepresentation of the origin of that material,
+  or requiring that modified versions of such material be marked in
+  reasonable ways as different from the original version; or
+- d) Limiting the use for publicity purposes of names of licensors
+  or authors of the material; or
+- e) Declining to grant rights under trademark law for use of some
+  trade names, trademarks, or service marks; or
+- f) Requiring indemnification of licensors and authors of that
+  material by anyone who conveys the material (or modified versions
+  of it) with contractual assumptions of liability to the recipient,
+  for any liability that these contractual assumptions directly
+  impose on those licensors and authors.
+
+All other non-permissive additional terms are considered "further
+restrictions" within the meaning of section 10. If the Program as you
+received it, or any part of it, contains a notice stating that it is
+governed by this License along with a term that is a further
+restriction, you may remove that term. If a license document contains
+a further restriction but permits relicensing or conveying under this
+License, you may add to a covered work material governed by the terms
+of that license document, provided that the further restriction does
+not survive such relicensing or conveying.
+
+If you add terms to a covered work in accord with this section, you
+must place, in the relevant source files, a statement of the
+additional terms that apply to those files, or a notice indicating
+where to find the applicable terms.
+
+Additional terms, permissive or non-permissive, may be stated in the
+form of a separately written license, or stated as exceptions; the
+above requirements apply either way.
+
+### 8. Termination.
+
+You may not propagate or modify a covered work except as expressly
+provided under this License. Any attempt otherwise to propagate or
+modify it is void, and will automatically terminate your rights under
+this License (including any patent licenses granted under the third
+paragraph of section 11).
+
+However, if you cease all violation of this License, then your license
+from a particular copyright holder is reinstated (a) provisionally,
+unless and until the copyright holder explicitly and finally
+terminates your license, and (b) permanently, if the copyright holder
+fails to notify you of the violation by some reasonable means prior to
+60 days after the cessation.
+
+Moreover, your license from a particular copyright holder is
+reinstated permanently if the copyright holder notifies you of the
+violation by some reasonable means, this is the first time you have
+received notice of violation of this License (for any work) from that
+copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+
+Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
+this License. If your rights have been terminated and not permanently
+reinstated, you do not qualify to receive new licenses for the same
+material under section 10.
+
+### 9. Acceptance Not Required for Having Copies.
+
+You are not required to accept this License in order to receive or run
+a copy of the Program. Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance. However,
+nothing other than this License grants you permission to propagate or
+modify any covered work. These actions infringe copyright if you do
+not accept this License. Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+### 10. Automatic Licensing of Downstream Recipients.
+
+Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License. You are not responsible
+for enforcing compliance by third parties with this License.
+
+An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
+organization, or merging organizations. If propagation of a covered
+work results from an entity transaction, each party to that
+transaction who receives a copy of the work also receives whatever
+licenses to the work the party's predecessor in interest had or could
+give under the previous paragraph, plus a right to possession of the
+Corresponding Source of the work from the predecessor in interest, if
+the predecessor has it or can get it with reasonable efforts.
+
+You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License. For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+### 11. Patents.
+
+A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based. The
+work thus licensed is called the contributor's "contributor version".
+
+A contributor's "essential patent claims" are all patent claims owned
+or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version. For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
+this License.
+
+Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement). To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients. "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+A patent license is "discriminatory" if it does not include within the
+scope of its coverage, prohibits the exercise of, or is conditioned on
+the non-exercise of one or more of the rights that are specifically
+granted under this License. You may not convey a covered work if you
+are a party to an arrangement with a third party that is in the
+business of distributing software, under which you make payment to the
+third party based on the extent of your activity of conveying the
+work, and under which the third party grants, to any of the parties
+who would receive the covered work from you, a discriminatory patent
+license (a) in connection with copies of the covered work conveyed by
+you (or copies made from those copies), or (b) primarily for and in
+connection with specific products or compilations that contain the
+covered work, unless you entered into that arrangement, or that patent
+license was granted, prior to 28 March 2007.
+
+Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+### 12. No Surrender of Others' Freedom.
+
+If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License. If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under
+this License and any other pertinent obligations, then as a
+consequence you may not convey it at all. For example, if you agree to
+terms that obligate you to collect a royalty for further conveying
+from those to whom you convey the Program, the only way you could
+satisfy both those terms and this License would be to refrain entirely
+from conveying the Program.
+
+### 13. Use with the GNU Affero General Public License.
+
+Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work. The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+### 14. Revised Versions of this License.
+
+The Free Software Foundation may publish revised and/or new versions
+of the GNU General Public License from time to time. Such new versions
+will be similar in spirit to the present version, but may differ in
+detail to address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program
+specifies that a certain numbered version of the GNU General Public
+License "or any later version" applies to it, you have the option of
+following the terms and conditions either of that numbered version or
+of any later version published by the Free Software Foundation. If the
+Program does not specify a version number of the GNU General Public
+License, you may choose any version ever published by the Free
+Software Foundation.
+
+If the Program specifies that a proxy can decide which future versions
+of the GNU General Public License can be used, that proxy's public
+statement of acceptance of a version permanently authorizes you to
+choose that version for the Program.
+
+Later license versions may give you additional or different
+permissions. However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+### 15. Disclaimer of Warranty.
+
+THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT
+WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND
+PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE
+DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
+CORRECTION.
+
+### 16. Limitation of Liability.
+
+IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR
+CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
+ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT
+NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR
+LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM
+TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER
+PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+
+### 17. Interpretation of Sections 15 and 16.
+
+If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+END OF TERMS AND CONDITIONS
+
+## How to Apply These Terms to Your New Programs
+
+If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these
+terms.
+
+To do so, attach the following notices to the program. It is safest to
+attach them to the start of each source file to most effectively state
+the exclusion of warranty; and each file should have at least the
+"copyright" line and a pointer to where the full notice is found.
+
+        <one line to give the program's name and a brief idea of what it does.>
+        Copyright (C) <year>  <name of author>
+
+        This program is free software: you can redistribute it and/or modify
+        it under the terms of the GNU General Public License as published by
+        the Free Software Foundation, either version 3 of the License, or
+        (at your option) any later version.
+
+        This program is distributed in the hope that it will be useful,
+        but WITHOUT ANY WARRANTY; without even the implied warranty of
+        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+        GNU General Public License for more details.
+
+        You should have received a copy of the GNU General Public License
+        along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper
+mail.
+
+If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+        <program>  Copyright (C) <year>  <name of author>
+        This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+        This is free software, and you are welcome to redistribute it
+        under certain conditions; type `show c' for details.
+
+The hypothetical commands \`show w' and \`show c' should show the
+appropriate parts of the General Public License. Of course, your
+program's commands might be different; for a GUI interface, you would
+use an "about box".
+
+You should also get your employer (if you work as a programmer) or
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary. For more information on this, and how to apply and follow
+the GNU GPL, see <https://www.gnu.org/licenses/>.
+
+The GNU General Public License does not permit incorporating your
+program into proprietary programs. If your program is a subroutine
+library, you may consider it more useful to permit linking proprietary
+applications with the library. If this is what you want to do, use the
+GNU Lesser General Public License instead of this License. But first,
+please read <https://www.gnu.org/licenses/why-not-lgpl.html>.
--- a/README.md
+++ b/README.md
@@ -77,4 +77,13 @@ sudo apt install nodejs npm nanopb
 1.  After flashing, the ESP32 will either connect to the pre-configured Wi-Fi network or start an Access Point (APSTA).
 2.  Check the serial monitor logs to find the IP address assigned to the device in STA mode, or the default AP address (usually `192.168.4.1`).
 3.  Open a web browser and navigate to the device's IP address.
-4.  You should now see the ODROID Remote control panel.
+4.  You should now see the ODROID Remote control panel.
+
+## Docs
+
+- Hardkernel WiKi: [https://wiki.odroid.com/accessory/powermate](https://wiki.odroid.com/accessory/powermate)
+
+## Repo
+
+- Hardkernel Github: [https://github.com/hardkernel/odroid-powermate](https://github.com/hardkernel/odroid-powermate)
+- Original Repo: [https://github.com/shinys000114/odroid-powermate](https://github.com/shinys000114/odroid-powermate)
--- a/docs/API.md
+++ b/docs/API.md
@@ -1,283 +0,0 @@
-# ODROID Remote API Documentation
-
-This document outlines the HTTP REST and WebSocket APIs for communication between the web interface and the ESP32 device.
-
---
-
-## WebSocket API
-
-The WebSocket API provides a full-duplex communication channel for real-time data, such as sensor metrics and the
-interactive serial console. All server-to-client communication is done via binary WebSocket frames containing Protocol
-Buffers (protobuf) messages.
-
-**Endpoint**: `/ws`
-
-### Server-to-Client Messages
-
-The server pushes binary messages to the client. Each message is a Protocol Buffers (protobuf) encoded `StatusMessage`.
-This top-level message uses a `oneof` field to carry different payload types.
-
-The protobuf schema is defined in `proto/status.proto`.
-
-```proto
-// Top-level message for all websocket communication
-message StatusMessage {
-   oneof payload {
-    SensorData sensor_data = 1;
-    WifiStatus wifi_status = 2;
-    UartData uart_data = 3;
-  }
-}
-```
-
-The client decodes the `StatusMessage` and then handles the specific payload:
-
-| `oneof` payload field | Contained Message | Description                                                                             |
-|-----------------------|-------------------|-----------------------------------------------------------------------------------------|
-| `sensor_data`         | `SensorData`      | Pushed periodically (e.g., every second) with the latest power metrics.                 |
-| `wifi_status`         | `WifiStatus`      | Pushed periodically or on change to update the current Wi-Fi connection status.         |
-| `uart_data`           | `UartData`        | Forwards raw binary data from the ODROID's serial (UART) port to the client's terminal. |
-
-### Client-to-Server Messages
-
-The client sends raw binary/text data, which is interpreted as terminal input.
-
- **Description**: Raw binary data representing user input from the web terminal. This data is forwarded directly to the ODROID's serial (UART) port.
- **Payload**: `(raw data)`
-
---
-
-## HTTP REST API
-
-The REST API is used for configuration and to trigger specific actions. All request and response bodies are in `application/json` format.
-
-### Endpoint: `/api/control`
-
-Manages power relays and system actions.
-
-#### `GET /api/control`
-
-Retrieves the current status of the power relays.
-
- **Success Response (200 OK)**
-  ```json
-  {
-    "load_12v_on": true,
-    "load_5v_on": false
-  }
-  ```
-  - `load_12v_on` (boolean): The state of the main 12V power relay.
-  - `load_5v_on` (boolean): The state of the 5V USB power relay.
-
-#### `POST /api/control`
-
-Sets the state of power relays or triggers a power action. You can send one or more commands in a single request.
-
- **Request Body Examples**:
-  - To turn the main power on:
-    ```json
-    { "load_12v_on": true }
-    ```
-  - To trigger a system reset:
-    ```json
-    { "reset_trigger": true }
-    ```
-  - To toggle the power button:
-    ```json
-    { "power_trigger": true }
-    ```
-
- **Request Fields**:
-  - `load_12v_on` (boolean, optional): Sets the state of the 12V relay.
-  - `load_5v_on` (boolean, optional): Sets the state of the 5V relay.
-  - `reset_trigger` (boolean, optional): If `true`, momentarily triggers the reset button (pulls the line low for 3 seconds). The action is triggered only on a `true` value.
-  - `power_trigger` (boolean, optional): If `true`, momentarily triggers the power button (pulls the line low for 3 seconds). The action is triggered only on a `true` value.
-
- **Success Response (200 OK)**: `{"status":"ok"}`
-
---
-
-### Endpoint: `/api/setting`
-
-Manages all Wi-Fi, network, and system-related configurations.
-
-#### `GET /api/setting`
-
-Retrieves the complete current network and system configuration.
-
- **Success Response (200 OK)**
-  ```json
-  {
-    "connected": true,
-    "ssid": "MyHome_WiFi",
-    "rssi": -65,
-    "mode": "apsta",
-    "net_type": "static",
-    "baudrate": "115200",
-    "vin_current_limit": 8.0,
-    "main_current_limit": 7.0,
-    "usb_current_limit": 5.0,
-    "ip": {
-        "ip": "192.168.1.100",
-        "gateway": "192.168.1.1",
-        "subnet": "255.255.255.0",
-        "dns1": "8.8.8.8",
-        "dns2": "8.8.4.4"
-    }
-  }
-  ```
- **Response Fields**:
-  - `connected` (boolean): Current Wi-Fi connection state.
-  - `ssid` (string): The SSID of the connected network.
-  - `rssi` (integer): The Received Signal Strength Indicator in dBm. Only present if connected.
-  - `mode` (string): The current Wi-Fi mode (`"sta"` or `"apsta"`).
-  - `net_type` (string): The network type (`"dhcp"` or `"static"`).
-  - `baudrate` (string): The current UART baud rate.
-  - `vin_current_limit` (number): The current limit for VIN in Amps. `0` means disabled.
-  - `main_current_limit` (number): The current limit for the Main channel in Amps. `0` means disabled.
-  - `usb_current_limit` (number): The current limit for the USB channel in Amps. `0` means disabled.
-  - `ip` (object): Contains IP configuration details. Present even if using DHCP (may show the last-leased IP).
-    - `ip` (string): The device's IP address.
-    - `gateway` (string): The network gateway address.
-    - `subnet` (string): The network subnet mask.
-    - `dns1` (string): The primary DNS server address.
-    - `dns2` (string): The secondary DNS server address.
-
-#### `POST /api/setting`
-
-This is a multi-purpose endpoint. The server determines the action based on the fields provided in the request body.
-
- **Action: Connect to a Wi-Fi Network**
-  - **Request Body**:
-    ```json
-    {
-      "ssid": "MyHome_WiFi",
-      "password": "my_secret_password"
-    }
-    ```
-  - **Success Response (200 OK)**:
-    ```json
-    { "status": "connection_initiated" }
-    ```
-
- **Action: Configure Network Type (DHCP/Static)**
-  - **Request Body (for DHCP)**:
-    ```json
-    { "net_type": "dhcp" }
-    ```
-  - **Request Body (for Static IP)**:
-    ```json
-    {
-      "net_type": "static",
-      "ip": "192.168.1.100",
-      "gateway": "192.168.1.1",
-      "subnet": "255.255.255.0",
-      "dns1": "8.8.8.8",
-      "dns2": "8.8.4.4"
-    }
-    ```
-  - **Success Response (200 OK)**:
-    - `{"status":"dhcp_config_applied"}`
-    - `{"status":"static_config_applied"}`
-
- **Action: Configure Wi-Fi Mode (STA/APSTA)**
-  - **Request Body (for STA mode)**:
-    ```json
-    { "mode": "sta" }
-    ```
-  - **Request Body (for AP+STA mode)**:
-    ```json
-    {
-        "mode": "apsta",
-        "ap_ssid": "ODROID-Remote-AP",
-        "ap_password": "hardkernel"
-    }
-    ```
-    *Note: `ap_password` is optional. If omitted, the AP will be open.*
-  - **Success Response (200 OK)**: `{"status":"mode_switch_initiated"}`
-
- **Action: Configure UART Baud Rate**
-  - **Request Body**:
-    ```json
-    { "baudrate": "115200" }
-    ```
-  - **Success Response (200 OK)**:
-    ```json
-    { "status": "baudrate_updated" }
-    ```
-
- **Action: Configure Current Limits**
-  - **Request Body**:
-    *Note: You can set one or more limits in a single request. A value of `-1.0` disables the limit.*
-    ```json
-    {
-      "vin_current_limit": 7.5,
-      "main_current_limit": 6.0,
-      "usb_current_limit": -1.0
-    }
-    ```
-  - **Success Response (200 OK)**: `{"status":"current_limit_updated"}`
-
---
-
-### Endpoint: `/api/wifi/scan`
-
-Scans for available Wi-Fi networks.
-
-#### `GET /api/wifi/scan`
-
- **Success Response (200 OK)**: Returns a JSON array of found networks.
-  ```json
-  [
-    {
-      "ssid": "MyHome_WiFi",
-      "rssi": -55,
-      "authmode": "WPA2_PSK"
-    },
-    {
-      "ssid": "GuestNetwork",
-      "rssi": -78,
-      "authmode": "OPEN"
-    }
-  ]
-  ```
- **Response Fields**:
-  - `ssid` (string): The network's Service Set Identifier.
-  - `rssi` (integer): Signal strength in dBm.
-  - `authmode` (string): The authentication mode (e.g., `"OPEN"`, `"WPA_PSK"`, `"WPA2_PSK"`).
-
---
-
-### Endpoint: `/datalog.csv`
-
-Provides access to the historical sensor data log.
-
-#### `GET /datalog.csv`
-
- **Description**: Downloads a CSV file containing the history of sensor data readings (voltage, current, power). The log is rotated when it reaches its maximum size (1MB).
- **Success Response (200 OK)**: The body of the response is the CSV file content.
- **Response Headers**:
-  - `Content-Type: text/csv`
-  - `Content-Disposition: attachment; filename="datalog.csv"`
- **CSV Format**:
-  ```csv
-  timestamp,voltage,current,power
-  1672531200,12.01,1.52,18.25
-  1672531201,12.02,1.53,18.39
-  ...
-  ```
-
---
-
-### General Error Responses
-
-In case of an error, the server will respond with an appropriate HTTP status code.
-
- **`400 Bad Request`**: The request is malformed, contains invalid parameters, or is otherwise incorrect. The response body may contain a JSON object with more details.
-  ```json
-  {
-    "error": "Invalid request body"
-  }
-  ```
- **`404 Not Found`**: The requested endpoint does not exist.
- **`500 Internal Server Error`**: The server encountered an unexpected condition that prevented it from fulfilling the request.
--- a/docs/custom.md
+++ b/docs/custom.md
@@ -1,66 +0,0 @@
-# Custom firmware
-
-If you want, you can create your own custom firmware.
-
-## Install Tools
-
-To build the source code, you need the following packages on Ubuntu 24.04.
-
-```bash
-sudo apt install nodejs npm nanopb
-```
-
-You need `esp-idf` version 5.4. It might be possible to build with the latest version, but it has not been confirmed.
-
-First, install the necessary tools for esp-idf.
-
-```bash
-sudo apt install git wget flex bison gperf python3 python3-pip python3-venv \
-  cmake ninja-build ccache libffi-dev libssl-dev dfu-util libusb-1.0-0 \
-
-```
-
-Next, clone the esp-idf tool.
-
-```bash
-mkdir -p ~/esp
-cd ~/esp
-git clone -b release/v5.4 --recursive https://github.com/espressif/esp-idf.git
-```
-
-You need to install tools such as a compiler and a debugger.
-
-```bash
-cd ~/esp/esp-idf
-./install.sh esp32c3
-```
-
-Please prepare to build the source by running the shell for using esp-idf.
-```bash
-. $HOME/esp/esp-idf/export.sh
-```
-## Build custom firmware based on PowerMate
-
-First, clone the PowerMate source code.
-```bash
-git clone https://github.com/shinys000114/odroid-powermate.git
-```
-
-After connecting the USB Type-C cable to the PowerMate and the host PC, run the command below to build and update PowerMate.
-```bash
-cd odroid-powermate
-idf.py app flash monitor
-```
-
-## Create a new project
-
-Create a project with the command below and create your own firmware.
-
-```bash
-idf.py create-project proj
-cd proj
-idf.py set-target esp32c3
-```
-
-For a more detailed guide, please refer to the link below.  
-[https://docs.espressif.com/projects/esp-idf/en/release-v5.4/esp32/get-started/linux-macos-setup.html#](https://docs.espressif.com/projects/esp-idf/en/release-v5.4/esp32/get-started/linux-macos-setup.html#)
--- a/docs/img/1000030233.jpg
+++ b/docs/img/1000030233.jpg
--- a/docs/img/1000030234.jpg
+++ b/docs/img/1000030234.jpg
--- a/docs/img/1000030235.jpg
+++ b/docs/img/1000030235.jpg
--- a/docs/img/1000030236.jpg
+++ b/docs/img/1000030236.jpg
--- a/docs/img/1000030237.jpg
+++ b/docs/img/1000030237.jpg
--- a/docs/img/apmode.png
+++ b/docs/img/apmode.png
--- a/docs/img/color.png
+++ b/docs/img/color.png
--- a/docs/img/current.png
+++ b/docs/img/current.png
--- a/docs/img/device.png
+++ b/docs/img/device.png
--- a/docs/img/htop.png
+++ b/docs/img/htop.png
--- a/docs/img/static.png
+++ b/docs/img/static.png
--- a/docs/img/uart.png
+++ b/docs/img/uart.png
--- a/docs/pin.md
+++ b/docs/pin.md
@@ -1,52 +0,0 @@
-# Connector and Pin Header Description
-
-## J1 USB-C Connector
-
-This terminal is for uploading firmware and checking program logs.
-It is recognized as a serial device and as a `ttyACM` device in Linux.
-To view the logs, you can use the command below.
-
-```bash
-minicom -D /dev/ttyACM0 -b 115200
-```
-
-## J2 UART Pin header
-
-Connected to the `U0RXD`, `U0TXD` system UART of the ESP32-C3. Currently not used on this board.
-It can be used as GPIO through appropriate configuration in esp-idf.
-
-## J3 ODROID UART Connector
-
-Connects to the UART debug port of the ODROID.
-This connector is `X8821WRS-04`. you can use the [cable from the USB-UART 2 board](https://www.hardkernel.com/shop/usb-uart-2-module-kit-copy/).
-
-## J4 GPIO Output
-
-4 GPIO output pin headers. Used to trigger the power of external devices.
-
-| Pin Number | Function           | Function           | Pin Number |
-|------------|--------------------|--------------------|------------|
-| 3          | Reserved           | Reserved           | 1          |
-| 4          | Reset (Open Drain) | Power (Open Drain) | 2          |
-
-The Reset and Power pins can be used on the ODROID-M series and H series.
-
-## J5 DC Input
-
-Supports 9~21v input. You can use the DC power supply sold by Hardkernel.
-
-## J6 DC Out
-
-Outputs the switched power from the J5 input.
-
-## J7 USB Power Out
-
-Switched 5v voltage output.
-The output is set to 5.25V considering voltage drop. Please use with caution.
-
-## J8 OLED Display Connector
-
-**Reserved**
-
-SSD1309 OLED Connector
-It cannot be used as GPIO for other purposes because it shares the I2C bus with `PCA9557PW`, `INA3221`.
--- a/docs/schematic.pdf
+++ b/docs/schematic.pdf
--- a/docs/settings.md
+++ b/docs/settings.md
@@ -1,77 +0,0 @@
-# Settings
-
-> **Warning**
-> Wi-Fi and IP related settings will restart the Wi-Fi service.
-> After applying the settings, you may need to reconnect to the page.
->
-> Please be careful when applying settings. Incorrect settings may prevent you from connecting to the device.
-> If you have problems with the device settings, connect the debug USB-C connector to check the device's logs.
-> If necessary, you can re-update the firmware to initialize the device.
-
-## Connect to Wi-Fi
-
-The device boots in APSTA mode by default and services the following AP.
-
- SSID: powermate
- Password: hardkernel
-
-After connecting to the above AP using a smartphone, etc., you can configure the device by accessing the
-`http://192.168.4.1` address.
-
-> **Warning**
-> A warning that the AP does not have internet may appear. Please press `Allow connection` to connect to the device.
-
-You can open the settings window by pressing the gear button at the top.
-Press the Scan button to see a list of nearby APs.
-
-<img src="img/1000030234.jpg" width="300">
-
-After entering the password, press the Connect button and PowerMate will attempt to connect to the AP.
-For public APs, leave the Password blank.
-
-<img src="img/1000030235.jpg" width="300">
-
-
-
-<img src="img/1000030236.jpg" width="300">
-
-When Wi-Fi is connected, the green SSID name appears at the top of the page.
-
-<img src="img/1000030237.jpg" width="300">
-
-## Set static ip
-
-You can assign the IP of the device yourself.
-You can set the IP directly by turning on the `Use Static IP` toggle in the `Network` tab.
-
-![static.png](img/static.png)
-
-## AP Mode
-
-Configure the AP function of PowerMate.
-
-If you do not need the AP service, it is recommended to disable it.
-
-![apmode.png](img/apmode.png)
-
-## Current Limit
-
-Monitors the current of PowerMate, and if a value higher than the set current is detected, all load switches are turned
-off.
-
-![current.png](img/current.png)
-
-## Device
-
-Sets the UART Baudrate. Please match it with the baudrate of the connected ODROID.
-
-| ODROID           | Baud rate                  |
-|------------------|----------------------------|
-| ODROID-C4        | 115200                     |
-| ODROID-C5        | 921600                     |
-| ODROID-M1/M1S/M2 | 1500000                    |
-| ODROID-H3/4      | According to user settings |
-
-You can reboot the PowerMate. The state of the load switch does not change due to rebooting.
-
-![device.png](img/device.png)
--- a/docs/uart.md
+++ b/docs/uart.md
@@ -1,24 +0,0 @@
-# UART Terminal
-
-> **Warning**
-> Data drop may occur depending on the communication quality.
-
-![uart.png](img/uart.png)
-
-You can see the UART terminal in the Device tab.
-
-You can specify the baud rate in `Setting > Device`, and the supported baud rates are 9600-1500000.
-
-![device.png](img/device.png)
-
-## ANSI Color
-
-Supports the color table of the terminal.
-
-```bash
-odroid@server:~$ TERM=xterm-256color /bin/bash
-```
-
-![color.png](img/color.png)
-
-![htop.png](img/htop.png)
--- a/example/logger/.gitignore
+++ b/example/logger/.gitignore
@@ -0,0 +1,5 @@
+/.venv/
+/venv/
+status_pb2.py
+test.csv
+plot.png
--- a/example/logger/README.md
+++ b/example/logger/README.md
@@ -0,0 +1,41 @@
+# Power Consumption Logger Example
+
+Based on this script, you can monitor power consumption and implement graph plotting.
+
+## How to Run the Script
+
+### Install Python Virtual Environment
+
+```shell
+sudo apt install virtualenv
+virtualenv venv
+source venv/bin/activate
+```
+
+### Install require package
+
+```shell
+pip install grpcio-tools requests websockets protobuf pandas matplotlib
+```
+
+### Build `status_pb2.py`
+
+```shell
+python -m grpc_tools.protoc -I ../../proto --python_out=. status.proto
+```
+
+### Execute script
+
+#### Power consumption collection
+```shell
+# python3 logger.py -u <username> -o <name.csv> -p <password> <address>
+python3 logger.py -u admin -p password -o test.csv 192.168.30.5 
+```
+
+#### Plot data
+
+```shell
+python3 csv_2_plot.py test.csv plot.png [--type power voltage current]
+```
+
+![plot.png](plot.png)
--- a/example/logger/csv_2_plot.py
+++ b/example/logger/csv_2_plot.py
@@ -0,0 +1,108 @@
+import argparse
+
+import matplotlib.dates as mdates
+import matplotlib.pyplot as plt
+import pandas as pd
+
+
+def plot_power_data(csv_path, output_path, plot_types):
+    """
+    Reads power data from a CSV file and generates a plot image.
+
+    Args:
+        csv_path (str): The path to the input CSV file.
+        output_path (str): The path to save the output plot image.
+        plot_types (list): A list of strings indicating which plots to generate
+                           (e.g., ['power', 'voltage', 'current']).
+    """
+    try:
+        # Read the CSV file into a pandas DataFrame
+        # The 'timestamp' column is parsed as dates
+        df = pd.read_csv(csv_path, parse_dates=['timestamp'])
+        print(f"Successfully loaded {len(df)} records from '{csv_path}'")
+    except FileNotFoundError:
+        print(f"Error: The file '{csv_path}' was not found.")
+        return
+    except Exception as e:
+        print(f"An error occurred while reading the CSV file: {e}")
+        return
+
+    # --- Plotting Configuration ---
+    plot_configs = {
+        'power': {'title': 'Power Consumption', 'ylabel': 'Power (W)',
+                  'cols': ['vin_power', 'main_power', 'usb_power']},
+        'voltage': {'title': 'Voltage', 'ylabel': 'Voltage (V)',
+                    'cols': ['vin_voltage', 'main_voltage', 'usb_voltage']},
+        'current': {'title': 'Current', 'ylabel': 'Current (A)', 'cols': ['vin_current', 'main_current', 'usb_current']}
+    }
+    channel_labels = ['VIN', 'MAIN', 'USB']
+    channel_colors = ['red', 'green', 'blue']
+
+    num_plots = len(plot_types)
+    if num_plots == 0:
+        print("No plot types selected. Exiting.")
+        return
+
+    # Create a figure and a set of subplots based on the number of selected plot types.
+    # sharex=True makes all subplots share the same x-axis (time)
+    # squeeze=False ensures that 'axes' is always a 2D array, even if num_plots is 1.
+    fig, axes = plt.subplots(num_plots, 1, figsize=(15, 6 * num_plots), sharex=True, squeeze=False)
+    axes = axes.flatten()  # Flatten the 2D array to 1D for easier iteration
+
+    # --- Loop through selected plot types and generate plots ---
+    for i, plot_type in enumerate(plot_types):
+        ax = axes[i]
+        config = plot_configs[plot_type]
+
+        for j, col_name in enumerate(config['cols']):
+            ax.plot(df['timestamp'], df[col_name], label=channel_labels[j], color=channel_colors[j])
+
+        ax.set_title(config['title'])
+        ax.set_ylabel(config['ylabel'])
+        ax.legend()
+        ax.grid(True, which='both', linestyle='--', linewidth=0.5)
+
+    # --- Formatting the x-axis (Time) ---
+    # Improve date formatting on the x-axis
+    # Apply formatting to the last subplot's x-axis
+    last_ax = axes[-1]
+    last_ax.xaxis.set_major_formatter(mdates.DateFormatter('%H:%M:%S'))
+    last_ax.xaxis.set_major_locator(plt.MaxNLocator(15))  # Limit the number of ticks
+    plt.xlabel('Time')
+    plt.xticks(rotation=45)
+
+    # Add a main title to the figure
+    start_time = df['timestamp'].iloc[0].strftime('%Y-%m-%d %H:%M:%S')
+    end_time = df['timestamp'].iloc[-1].strftime('%H:%M:%S')
+    fig.suptitle(f'ODROID Power Log ({start_time} to {end_time})', fontsize=16, y=0.95)
+
+    # Adjust layout to prevent titles/labels from overlapping
+    plt.tight_layout(rect=[0, 0, 1, 0.94])
+
+    # --- Save the plot to a file ---
+    try:
+        plt.savefig(output_path, dpi=150)
+        print(f"Plot successfully saved to '{output_path}'")
+    except Exception as e:
+        print(f"An error occurred while saving the plot: {e}")
+
+
+def main():
+    parser = argparse.ArgumentParser(description="Generate a plot from an Odroid PowerMate CSV log file.")
+    parser.add_argument("input_csv", help="Path to the input CSV log file.")
+    parser.add_argument("output_image", help="Path to save the output plot image (e.g., plot.png).")
+    parser.add_argument(
+        "-t", "--type",
+        nargs='+',
+        choices=['power', 'voltage', 'current'],
+        default=['power', 'voltage', 'current'],
+        help="Types of plots to generate. Choose from 'power', 'voltage', 'current'. "
+             "Default is to generate all three."
+    )
+    args = parser.parse_args()
+
+    plot_power_data(args.input_csv, args.output_image, args.type)
+
+
+if __name__ == "__main__":
+    main()
--- a/example/logger/logger.py
+++ b/example/logger/logger.py
@@ -0,0 +1,152 @@
+import argparse
+import asyncio
+import csv
+import requests
+import websockets
+from datetime import datetime
+
+# Import the status_pb2.py file generated by `protoc`.
+# This file must be in the same directory as logger.py.
+import status_pb2
+
+
+class OdroidPowerLogger:
+    """
+    A class to connect to the Odroid Smart Power monitoring server and log power data.
+    1. Logs into the server via an HTTP POST request to obtain an authentication token.
+    2. Connects to the WebSocket using the obtained token.
+    3. Receives and decodes binary data in Protobuf format, then prints it.
+    """
+
+    def __init__(self, host, username, password, output_file=None):
+        self.host = host
+        self.username = username
+        self.password = password
+        self.base_url = f"http://{self.host}"
+        self.ws_url = f"ws://{self.host}/ws"
+        self.output_file = output_file
+        self.token = None
+
+    def login(self):
+        """Logs into the server to retrieve an authentication token."""
+        login_url = f"{self.base_url}/login"
+        payload = {"username": self.username, "password": self.password}
+        try:
+            print(f"Attempting to log in to '{login_url}'...")
+            response = requests.post(login_url, json=payload, timeout=5)
+            response.raise_for_status()
+
+            response_json = response.json()
+            if "token" in response_json:
+                self.token = response_json["token"]
+                print("Login successful! Token received.")
+                return True
+            else:
+                print("Login failed: No token in response.")
+                return False
+        except requests.exceptions.RequestException as e:
+            print(f"Error during login: {e}")
+            return False
+
+    async def listen_power_data(self):
+        """Connects to the WebSocket to receive and log power data."""
+        if not self.token:
+            print("Cannot connect to WebSocket without an authentication token.")
+            return
+
+        # Add the authentication token as a query parameter
+        uri = f"{self.ws_url}?token={self.token}"
+
+        csv_file = None
+        csv_writer = None
+
+        try:
+            # --- CSV File Handling ---
+            if self.output_file:
+                try:
+                    # Open the file in write mode, with newline='' to prevent extra blank rows
+                    csv_file = open(self.output_file, 'w', newline='', encoding='utf-8')
+                    csv_writer = csv.writer(csv_file)
+
+                    # Write header
+                    header = [
+                        'timestamp', 'uptime_sec',
+                        'vin_voltage', 'vin_current', 'vin_power',
+                        'main_voltage', 'main_current', 'main_power',
+                        'usb_voltage', 'usb_current', 'usb_power'
+                    ]
+                    csv_writer.writerow(header)
+                    print(f"Logging data to {self.output_file}")
+                except IOError as e:
+                    print(f"Error opening CSV file: {e}")
+                    # If file can't be opened, disable CSV writing
+                    csv_file = None
+                    csv_writer = None
+            # --- End CSV File Handling ---
+
+            async with websockets.connect(uri) as websocket:
+                print(f"Connected to WebSocket: {uri}")
+                while True:
+                    # Receive binary message from the server
+                    message_bytes = await websocket.recv()
+
+                    # Decode the Protobuf message
+                    status_message = status_pb2.StatusMessage()
+                    status_message.ParseFromString(message_bytes)
+
+                    # Process only if the payload type is 'sensor_data'
+                    if status_message.WhichOneof('payload') == 'sensor_data':
+                        sensor_data = status_message.sensor_data
+                        ts_dt = datetime.fromtimestamp(sensor_data.timestamp)
+                        ts_str = ts_dt.strftime('%Y-%m-%d %H:%M:%S')
+
+                        print(f"--- {ts_str} (Uptime: {sensor_data.uptime_sec}s) ---")
+
+                        # Print data for each channel
+                        for name, channel in [('VIN', sensor_data.vin), ('MAIN', sensor_data.main),
+                                              ('USB', sensor_data.usb)]:
+                            print(
+                                f"  {name:<4}: {channel.voltage:5.2f} V | {channel.current:5.3f} A | {channel.power:5.2f} W")
+
+                        # Write to CSV if enabled
+                        if csv_writer:
+                            row = [
+                                ts_dt.isoformat(), sensor_data.uptime_sec,
+                                sensor_data.vin.voltage, sensor_data.vin.current, sensor_data.vin.power,
+                                sensor_data.main.voltage, sensor_data.main.current, sensor_data.main.power,
+                                sensor_data.usb.voltage, sensor_data.usb.current, sensor_data.usb.power
+                            ]
+                            csv_writer.writerow(row)
+
+        except websockets.exceptions.ConnectionClosed as e:
+            print(f"WebSocket connection closed: {e}")
+        except Exception as e:
+            print(f"Error during WebSocket processing: {e}")
+        finally:
+            if csv_file:
+                csv_file.close()
+                print(f"\nCSV file '{self.output_file}' saved.")
+
+    async def run(self):
+        """Runs the logger."""
+        if self.login():
+            await self.listen_power_data()
+
+
+async def main():
+    parser = argparse.ArgumentParser(description="Odroid Smart Power Data Logger")
+    parser.add_argument("host", help="Server's host address or IP (e.g., 192.168.1.10)")
+    parser.add_argument("-u", "--username", required=True, help="Login username")
+    parser.add_argument("-p", "--password", required=True, help="Login password")
+    parser.add_argument("-o", "--output", help="Path to the output CSV file.")
+    args = parser.parse_args()
+
+    logger = OdroidPowerLogger(host=args.host, username=args.username, password=args.password, output_file=args.output)
+    await logger.run()
+
+
+if __name__ == "__main__":
+    try:
+        asyncio.run(main())
+    except KeyboardInterrupt:
+        print("\nExiting program.")
--- a/example/logger/plot.png
+++ b/example/logger/plot.png
--- a/main/CMakeLists.txt
+++ b/main/CMakeLists.txt
@@ -16,7 +16,7 @@ endif ()

 # Register the component. Now, CMake knows how GZ_OUTPUT_FILE is generated
 # and can correctly handle the dependency for embedding.
-idf_component_register(SRC_DIRS "app" "nconfig" "wifi" "indicator" "system" "service" "proto"
+idf_component_register(SRC_DIRS "app" "nconfig" "wifi" "indicator" "service" "proto"
        INCLUDE_DIRS "include" "proto"
        EMBED_FILES ${GZ_OUTPUT_FILE}
 )
--- a/main/app/odroid-power-mate.c
+++ b/main/app/odroid-power-mate.c
@@ -11,6 +11,7 @@
 #include "nvs_flash.h"
 #include "system.h"
 #include "wifi.h"
+#include "storage.h"

 void app_main(void)
 {
--- a/main/idf_component.yml
+++ b/main/idf_component.yml
@@ -1,6 +1,5 @@
 dependencies:
  espressif/led_indicator: ^1.1.1
-  joltwallet/littlefs: ==1.20.1
  esp-idf-lib/ina3221: ^1.1.7
  esp-idf-lib/pca9557: ^1.0.7
  nikas-belogolov/nanopb: ^1.0.0
--- a/main/include/nconfig.h
+++ b/main/include/nconfig.h
@@ -42,6 +42,8 @@ enum nconfig_type
    VIN_CURRENT_LIMIT, ///< The maximum current limit for the VIN.
    MAIN_CURRENT_LIMIT, ///< The maximum current limit for the MAIN out.
    USB_CURRENT_LIMIT, ///< The maximum current limit for the USB out.
+    PAGE_USERNAME, ///< Webpage username
+    PAGE_PASSWORD, ///< Webpage password
    NCONFIG_TYPE_MAX,   ///< Sentinel for the maximum number of configuration types.
 };

--- a/main/include/storage.h
+++ b/main/include/storage.h
@@ -0,0 +1,6 @@
+#ifndef STORAGE_H_
+#define STORAGE_H_
+
+void storage_init(void);
+
+#endif /* STORAGE_H_ */
--- a/main/nconfig/nconfig.c
+++ b/main/nconfig/nconfig.c
@@ -28,6 +28,8 @@ const static char* keys[NCONFIG_TYPE_MAX] = {
    [VIN_CURRENT_LIMIT] = "vin_climit",
    [MAIN_CURRENT_LIMIT] = "main_climit",
    [USB_CURRENT_LIMIT] = "usb_climit",
+    [PAGE_USERNAME] = "username",
+    [PAGE_PASSWORD] = "password",
 };

 struct default_value
@@ -50,6 +52,8 @@ struct default_value const default_values[] = {
    {VIN_CURRENT_LIMIT, "4.0"},
    {MAIN_CURRENT_LIMIT, "3.0"},
    {USB_CURRENT_LIMIT, "3.0"},
+    {PAGE_USERNAME, "admin"},
+    {PAGE_PASSWORD, "password"},
 };

 esp_err_t init_nconfig()
--- a/main/service/auth.c
+++ b/main/service/auth.c
@@ -0,0 +1,222 @@
+#include "auth.h"
+
+#include <esp_http_server.h>
+#include <esp_random.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include "esp_log.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/semphr.h"
+
+static const char* TAG = "AUTH";
+
+typedef struct
+{
+    char token[TOKEN_LENGTH];
+    bool active;
+    time_t creation_time;
+} auth_token_t;
+
+static auth_token_t s_tokens[MAX_TOKENS];
+static SemaphoreHandle_t s_token_mutex;
+
+void auth_init(void)
+{
+    s_token_mutex = xSemaphoreCreateMutex();
+    if (s_token_mutex == NULL)
+    {
+        ESP_LOGE(TAG, "Failed to create token mutex");
+        return;
+    }
+    for (int i = 0; i < MAX_TOKENS; i++)
+    {
+        s_tokens[i].active = false;
+        s_tokens[i].token[0] = '\0';
+    }
+    ESP_LOGI(TAG, "Auth module initialized.");
+}
+
+char* auth_generate_token(void)
+{
+    if (xSemaphoreTake(s_token_mutex, portMAX_DELAY) != pdTRUE)
+    {
+        ESP_LOGE(TAG, "Failed to take token mutex");
+        return NULL;
+    }
+
+    int free_slot = -1;
+    for (int i = 0; i < MAX_TOKENS; i++)
+    {
+        if (!s_tokens[i].active)
+        {
+            free_slot = i;
+            break;
+        }
+    }
+
+    if (free_slot == -1)
+    {
+        ESP_LOGW(TAG, "No free token slots available. Invalidating oldest token.");
+        time_t oldest_time = time(NULL);
+        int oldest_idx = -1;
+        for (int i = 0; i < MAX_TOKENS; i++)
+        {
+            if (s_tokens[i].active && s_tokens[i].creation_time < oldest_time)
+            {
+                oldest_time = s_tokens[i].creation_time;
+                oldest_idx = i;
+            }
+        }
+        if (oldest_idx != -1)
+        {
+            s_tokens[oldest_idx].active = false;
+            free_slot = oldest_idx;
+            ESP_LOGI(TAG, "Oldest token at index %d invalidated.", oldest_idx);
+        }
+        else
+        {
+            ESP_LOGE(TAG, "Could not find an oldest token to invalidate. This should not happen if all are active.");
+            xSemaphoreGive(s_token_mutex);
+            return NULL;
+        }
+    }
+
+    const char charset[] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+    char* new_token = (char*)malloc(TOKEN_LENGTH);
+    if (new_token == NULL)
+    {
+        ESP_LOGE(TAG, "Failed to allocate memory for new token");
+        xSemaphoreGive(s_token_mutex);
+        return NULL;
+    }
+
+    for (int i = 0; i < TOKEN_LENGTH - 1; i++)
+    {
+        new_token[i] = charset[esp_random() % (sizeof(charset) - 1)];
+    }
+    new_token[TOKEN_LENGTH - 1] = '\0';
+
+    strncpy(s_tokens[free_slot].token, new_token, TOKEN_LENGTH);
+    s_tokens[free_slot].active = true;
+    s_tokens[free_slot].creation_time = time(NULL);
+
+    ESP_LOGI(TAG, "Generated new token at slot %d: %s", free_slot, new_token);
+
+    xSemaphoreGive(s_token_mutex);
+    return new_token;
+}
+
+bool auth_validate_token(const char* token)
+{
+    if (token == NULL)
+    {
+        return false;
+    }
+
+    if (xSemaphoreTake(s_token_mutex, portMAX_DELAY) != pdTRUE)
+    {
+        ESP_LOGE(TAG, "Failed to take token mutex");
+        return false;
+    }
+
+    bool valid = false;
+    for (int i = 0; i < MAX_TOKENS; i++)
+    {
+        if (s_tokens[i].active && strcmp(s_tokens[i].token, token) == 0)
+        {
+            valid = true;
+            break;
+        }
+    }
+
+    xSemaphoreGive(s_token_mutex);
+    return valid;
+}
+
+void auth_invalidate_token(const char* token)
+{
+    if (token == NULL)
+    {
+        return;
+    }
+
+    if (xSemaphoreTake(s_token_mutex, portMAX_DELAY) != pdTRUE)
+    {
+        ESP_LOGE(TAG, "Failed to take token mutex");
+        return;
+    }
+
+    for (int i = 0; i < MAX_TOKENS; i++)
+    {
+        if (s_tokens[i].active && strcmp(s_tokens[i].token, token) == 0)
+        {
+            s_tokens[i].active = false;
+            s_tokens[i].token[0] = '\0'; // Clear token string
+            ESP_LOGI(TAG, "Token at slot %d invalidated.", i);
+            break;
+        }
+    }
+
+    xSemaphoreGive(s_token_mutex);
+}
+
+void auth_cleanup_expired_tokens(void) { ESP_LOGD(TAG, "auth_cleanup_expired_tokens called (no-op for now)."); }
+
+static const char* get_token_from_header(httpd_req_t* req)
+{
+    char* auth_header = NULL;
+    size_t buf_len;
+
+    if (httpd_req_get_hdr_value_len(req, "Authorization") == 0)
+    {
+        return NULL;
+    }
+
+    buf_len = httpd_req_get_hdr_value_len(req, "Authorization") + 1;
+    auth_header = (char*)malloc(buf_len);
+    if (auth_header == NULL)
+    {
+        ESP_LOGE(TAG, "Failed to allocate memory for auth header");
+        return NULL;
+    }
+
+    if (httpd_req_get_hdr_value_str(req, "Authorization", auth_header, buf_len) != ESP_OK)
+    {
+        free(auth_header);
+        return NULL;
+    }
+
+    if (strncmp(auth_header, "Bearer ", 7) == 0)
+    {
+        const char* token = auth_header + 7;
+        return token;
+    }
+
+    free(auth_header);
+    return NULL;
+}
+
+esp_err_t api_auth_check(httpd_req_t* req)
+{
+    const char* token = get_token_from_header(req);
+
+    if (token == NULL)
+    {
+        ESP_LOGW(TAG, "API access attempt without token for URI: %s", req->uri);
+        httpd_resp_send_err(req, HTTPD_401_UNAUTHORIZED, "Authorization token required");
+        return ESP_FAIL;
+    }
+
+    if (!auth_validate_token(token))
+    {
+        ESP_LOGW(TAG, "API access attempt with invalid token for URI: %s", req->uri);
+        httpd_resp_send_err(req, HTTPD_401_UNAUTHORIZED, "Invalid or expired token");
+        free((void*)token - 7);
+        return ESP_FAIL;
+    }
+
+    ESP_LOGD(TAG, "Token validated for URI: %s", req->uri);
+    free((void*)token - 7);
+    return ESP_OK;
+}
--- a/main/service/auth.h
+++ b/main/service/auth.h
@@ -0,0 +1,28 @@
+#ifndef AUTH_H
+#define AUTH_H
+
+#include <stdbool.h>
+#include "esp_err.h"
+#include "esp_http_server.h"
+
+#define MAX_TOKENS 4
+#define TOKEN_LENGTH 33 // 32 characters + null terminator
+
+// Function to initialize the authentication module
+void auth_init(void);
+
+// Function to generate a new token
+char* auth_generate_token(void);
+
+// Function to validate a token
+bool auth_validate_token(const char* token);
+
+// Function to invalidate a token (e.g., on logout)
+void auth_invalidate_token(const char* token);
+
+// Function to clean up expired tokens (if any)
+void auth_cleanup_expired_tokens(void);
+
+esp_err_t api_auth_check(httpd_req_t* req);
+
+#endif // AUTH_H
--- a/main/service/control.c
+++ b/main/service/control.c
@@ -1,3 +1,4 @@
+#include "auth.h"
 #include "cJSON.h"
 #include "driver/gpio.h"
 #include "esp_http_server.h"
@@ -8,6 +9,12 @@

 static esp_err_t control_get_handler(httpd_req_t* req)
 {
+    esp_err_t err = api_auth_check(req);
+    if (err != ESP_OK)
+    {
+        return err;
+    }
+
    cJSON* root = cJSON_CreateObject();

    cJSON_AddBoolToObject(root, "load_12v_on", get_main_load_switch());
@@ -25,6 +32,12 @@ static esp_err_t control_get_handler(httpd_req_t* req)

 static esp_err_t control_post_handler(httpd_req_t* req)
 {
+    esp_err_t err = api_auth_check(req);
+    if (err != ESP_OK)
+    {
+        return err;
+    }
+
    char buf[128];
    int ret, remaining = req->content_len;

--- a/main/service/datalog.c
+++ b/main/service/datalog.c
@@ -1,157 +0,0 @@
-#include "datalog.h"
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include "esp_littlefs.h"
-#include "esp_log.h"
-
-static const char* TAG = "datalog";
-static const char* LOG_FILE_PATH = "/littlefs/datalog.csv";
-
-#define MAX_LOG_SIZE (700 * 1024)
-
-void datalog_init(void)
-{
-    ESP_LOGI(TAG, "Initializing DataLog with LittleFS");
-
-    esp_vfs_littlefs_conf_t conf = {
-        .base_path = "/littlefs",
-        .partition_label = "littlefs",
-        .format_if_mount_failed = true,
-        .dont_mount = false,
-    };
-
-    esp_err_t ret = esp_vfs_littlefs_register(&conf);
-
-    if (ret != ESP_OK)
-    {
-        if (ret == ESP_FAIL)
-        {
-            ESP_LOGE(TAG, "Failed to mount or format filesystem");
-        }
-        else if (ret == ESP_ERR_NOT_FOUND)
-        {
-            ESP_LOGE(TAG, "Failed to find LittleFS partition");
-        }
-        else
-        {
-            ESP_LOGE(TAG, "Failed to initialize LittleFS (%s)", esp_err_to_name(ret));
-        }
-        return;
-    }
-
-    size_t total = 0, used = 0;
-    ret = esp_littlefs_info(conf.partition_label, &total, &used);
-    if (ret != ESP_OK)
-    {
-        ESP_LOGE(TAG, "Failed to get LittleFS partition information (%s)", esp_err_to_name(ret));
-    }
-    else
-    {
-        ESP_LOGI(TAG, "Partition size: total: %d, used: %d", total, used);
-    }
-
-    // Check if file exists
-    FILE* f = fopen(LOG_FILE_PATH, "r");
-    if (f == NULL)
-    {
-        ESP_LOGI(TAG, "Log file not found, creating new one.");
-        FILE* f_write = fopen(LOG_FILE_PATH, "w");
-        if (f_write == NULL)
-        {
-            ESP_LOGE(TAG, "Failed to create log file.");
-        }
-        else
-        {
-            // Add header for 3 channels
-            fprintf(f_write,
-                    "timestamp,usb_voltage,usb_current,usb_power,main_voltage,main_current,main_power,vin_voltage,vin_"
-                    "current,vin_power\n");
-            fclose(f_write);
-        }
-    }
-    else
-    {
-        // Here we could check if the header is correct, but for now we assume it is.
-        ESP_LOGI(TAG, "Log file found.");
-        fclose(f);
-    }
-}
-
-void datalog_add(uint32_t timestamp, const channel_data_t* channel_data)
-{
-    struct stat st;
-    if (stat(LOG_FILE_PATH, &st) == 0)
-    {
-        if (st.st_size >= MAX_LOG_SIZE)
-        {
-            ESP_LOGI(TAG, "Log file size (%ld) >= MAX_LOG_SIZE (%d). Truncating.", st.st_size, MAX_LOG_SIZE);
-
-            const char* temp_path = "/littlefs/datalog.tmp";
-            FILE* f_read = fopen(LOG_FILE_PATH, "r");
-            FILE* f_write = fopen(temp_path, "w");
-
-            if (f_read == NULL || f_write == NULL)
-            {
-                ESP_LOGE(TAG, "Failed to open files for truncation.");
-                if (f_read)
-                    fclose(f_read);
-                if (f_write)
-                    fclose(f_write);
-                return;
-            }
-
-            char line[256];
-            // Copy header
-            if (fgets(line, sizeof(line), f_read) != NULL)
-            {
-                fputs(line, f_write);
-            }
-
-            // Skip the oldest data line
-            if (fgets(line, sizeof(line), f_read) == NULL)
-            {
-                // No data lines to skip, something is wrong if we are truncating
-            }
-
-            // Copy the rest of the lines
-            while (fgets(line, sizeof(line), f_read) != NULL)
-            {
-                fputs(line, f_write);
-            }
-
-            fclose(f_read);
-            fclose(f_write);
-
-            // Replace the old log with the new one
-            if (remove(LOG_FILE_PATH) != 0)
-            {
-                ESP_LOGE(TAG, "Failed to remove old log file.");
-            }
-            if (rename(temp_path, LOG_FILE_PATH) != 0)
-            {
-                ESP_LOGE(TAG, "Failed to rename temp file.");
-                return;
-            }
-        }
-    }
-
-    FILE* f = fopen(LOG_FILE_PATH, "a");
-    if (f == NULL)
-    {
-        ESP_LOGE(TAG, "Failed to open log file for appending.");
-        return;
-    }
-
-    fprintf(f, "%lu", timestamp);
-    for (int i = 0; i < 3; ++i)
-    {
-        fprintf(f, ",%.3f,%.3f,%.3f", channel_data[i].voltage, channel_data[i].current, channel_data[i].power);
-    }
-    fprintf(f, "\n");
-    fclose(f);
-}
-
-const char* datalog_get_path(void) { return LOG_FILE_PATH; }
--- a/main/service/datalog.h
+++ b/main/service/datalog.h
@@ -1,19 +0,0 @@
-#ifndef MAIN_SERVICE_DATALOG_H_
-#define MAIN_SERVICE_DATALOG_H_
-
-#include <stdint.h>
-
-#define NUM_CHANNELS 3
-
-typedef struct
-{
-    float voltage;
-    float current;
-    float power;
-} channel_data_t;
-
-void datalog_init(void);
-void datalog_add(uint32_t timestamp, const channel_data_t* channel_data);
-const char* datalog_get_path(void);
-
-#endif /* MAIN_SERVICE_DATALOG_H_ */
--- a/main/service/dbg_console.c
+++ b/main/service/dbg_console.c
@@ -0,0 +1,182 @@
+#include "dbg_console.h"
+
+#include <stdio.h>
+#include <string.h>
+#include "argtable3/argtable3.h"
+#include "esp_console.h"
+#include "esp_log.h"
+#include "esp_netif.h"
+#include "esp_system.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+
+#include "wifi.h"
+
+
+/* 'wifi_scan' command */
+static int wifi_scan_handler(int argc, char** argv)
+{
+    printf("Scanning for Wi-Fi networks...\n");
+
+    wifi_ap_record_t* ap_records;
+    uint16_t count = 0;
+
+    wifi_scan_aps(&ap_records, &count);
+
+    if (count == 0)
+    {
+        printf("No APs found.\n");
+        return 0;
+    }
+
+    printf("Found %d APs:\n", count);
+    printf("  %-32s %-4s %s\n", "SSID", "RSSI", "Auth Mode");
+    for (int i = 0; i < count; i++)
+    {
+        printf("  %-32s %-4d %s\n", ap_records[i].ssid, ap_records[i].rssi, auth_mode_str(ap_records[i].authmode));
+    }
+
+    if (count > 0)
+    {
+        free(ap_records);
+    }
+
+    return 0;
+}
+
+static void register_wifi_scan(void)
+{
+    const esp_console_cmd_t cmd = {
+        .command = "wifi_scan",
+        .help = "Scan for available Wi-Fi networks",
+        .hint = NULL,
+        .func = &wifi_scan_handler,
+    };
+    ESP_ERROR_CHECK(esp_console_cmd_register(&cmd));
+}
+
+static struct
+{
+    struct arg_str* ssid;
+    struct arg_str* password;
+    struct arg_end* end;
+} wifi_connect_args;
+
+static int wifi_connect_handler(int argc, char** argv)
+{
+    int nerrors = arg_parse(argc, argv, (void**)&wifi_connect_args);
+    if (nerrors != 0)
+    {
+        arg_print_errors(stderr, wifi_connect_args.end, argv[0]);
+        return 1;
+    }
+
+    const char* ssid = wifi_connect_args.ssid->sval[0];
+    char password[64] = "";
+
+    if (wifi_connect_args.password->count != 0)
+        strncpy(password, wifi_connect_args.password->sval[0], sizeof(password));
+
+    printf("Attempting to connect to SSID: %s\n", ssid);
+
+    esp_err_t err = wifi_sta_set_ap(ssid, password);
+
+    if (err == ESP_OK)
+    {
+        printf("Wi-Fi credentials set. The device will attempt to connect.\n");
+    }
+    else
+    {
+        printf("Failed to set Wi-Fi credentials.\n");
+    }
+
+    return 0;
+}
+
+static void register_wifi_connect(void)
+{
+    wifi_connect_args.ssid = arg_str1(NULL, NULL, "<ssid>", "SSID of the network to connect to");
+    wifi_connect_args.password = arg_str0(NULL, NULL, "<password>", "Password of the network");
+    wifi_connect_args.end = arg_end(2);
+
+    const esp_console_cmd_t cmd = {.command = "wifi_connect",
+                                   .help = "Connect to a Wi-Fi network",
+                                   .hint = NULL,
+                                   .func = &wifi_connect_handler,
+                                   .argtable = &wifi_connect_args};
+    ESP_ERROR_CHECK(esp_console_cmd_register(&cmd));
+}
+
+/* 'wifi_status' command */
+static int wifi_status_handler(int argc, char** argv)
+{
+    wifi_ap_record_t ap_info;
+    esp_err_t err = wifi_get_current_ap_info(&ap_info);
+
+    if (err == ESP_OK)
+    {
+        printf("Connected to AP:\n");
+        printf("  SSID: %s\n", (char*)ap_info.ssid);
+        printf("  RSSI: %d\n", ap_info.rssi);
+
+        esp_netif_ip_info_t ip_info;
+        err = wifi_get_current_ip_info(&ip_info);
+
+        if (err == ESP_OK)
+        {
+            char ip_str[16];
+            esp_ip4addr_ntoa(&ip_info.ip, ip_str, sizeof(ip_str));
+            printf("  IP Address: %s\n", ip_str);
+
+            esp_ip4addr_ntoa(&ip_info.gw, ip_str, sizeof(ip_str));
+            printf("  Gateway: %s\n", ip_str);
+
+            esp_ip4addr_ntoa(&ip_info.netmask, ip_str, sizeof(ip_str));
+            printf("  Subnet Mask: %s\n", ip_str);
+        }
+        else
+        {
+            printf("  Could not get IP information: %s\n", esp_err_to_name(err));
+        }
+    }
+    else
+    {
+        printf("Not connected to any AP.\n");
+    }
+
+    return 0;
+}
+
+static void register_wifi_status(void)
+{
+    const esp_console_cmd_t cmd = {
+        .command = "wifi_status",
+        .help = "Get current Wi-Fi connection status and IP information",
+        .hint = NULL,
+        .func = &wifi_status_handler,
+    };
+    ESP_ERROR_CHECK(esp_console_cmd_register(&cmd));
+}
+
+esp_err_t initialize_dbg_console(void)
+{
+    esp_console_repl_t* repl = NULL;
+    esp_console_repl_config_t repl_config = ESP_CONSOLE_REPL_CONFIG_DEFAULT();
+
+    repl_config.prompt = "powermate >";
+    repl_config.max_cmdline_length = 512;
+
+    esp_console_dev_usb_serial_jtag_config_t hw_config = ESP_CONSOLE_DEV_USB_SERIAL_JTAG_CONFIG_DEFAULT();
+    ESP_ERROR_CHECK(esp_console_new_repl_usb_serial_jtag(&hw_config, &repl_config, &repl));
+
+    esp_console_register_help_command();
+    register_wifi_scan();
+    register_wifi_connect();
+    register_wifi_status();
+
+    printf("Debug console initialized.\n");
+
+    esp_console_start_repl(repl);
+
+    return ESP_OK;
+}
--- a/main/service/dbg_console.h
+++ b/main/service/dbg_console.h
@@ -0,0 +1,13 @@
+#ifndef ODROID_POWER_MATE_DBG_CONSOLE_H
+#define ODROID_POWER_MATE_DBG_CONSOLE_H
+
+#include "esp_err.h"
+
+/**
+ * @brief Initialize the debug console.
+ *
+ * @return ESP_OK on success, or an error code on failure.
+ */
+esp_err_t initialize_dbg_console(void);
+
+#endif // ODROID_POWER_MATE_DBG_CONSOLE_H
--- a/main/service/monitor.c
+++ b/main/service/monitor.c
@@ -6,7 +6,6 @@
 #include <nconfig.h>
 #include <time.h>
 #include "climit.h"
-#include "datalog.h"
 #include "esp_log.h"
 #include "esp_netif.h"
 #include "esp_timer.h"
@@ -94,8 +93,6 @@ static void sensor_timer_callback(void* arg)
    uint32_t uptime_sec = (uint32_t)(uptime_us / 1000000);
    uint32_t timestamp = (uint32_t)time(NULL);

-    channel_data_t channel_data_log[NUM_CHANNELS];
-
    StatusMessage message = StatusMessage_init_zero;
    message.which_payload = StatusMessage_sensor_data_tag;
    SensorData* sensor_data = &message.payload.sensor_data;
@@ -115,9 +112,6 @@ static void sensor_timer_callback(void* arg)
        current /= 1000.0f; // mA to A
        power = voltage * current;

-        // For datalog
-        channel_data_log[i] = (channel_data_t){.voltage = voltage, .current = current, .power = power};
-
        // For protobuf
        channels[i]->voltage = voltage;
        channels[i]->current = current;
@@ -282,19 +276,18 @@ void init_status_monitor()
    lim = atof(buf);
    climit_set_usb(lim);

-    datalog_init();
-
    const esp_timer_create_args_t sensor_timer_args = {.callback = &sensor_timer_callback,
                                                       .name = "sensor_reading_timer"};
    const esp_timer_create_args_t wifi_timer_args = {.callback = &status_wifi_callback, .name = "wifi_status_timer"};
    const esp_timer_create_args_t long_press_timer_args = {.callback = &long_press_timer_callback,
-                                                       .name = "long_press_timer"};
+                                                           .name = "long_press_timer"};

    ESP_ERROR_CHECK(esp_timer_create(&sensor_timer_args, &sensor_timer));
    ESP_ERROR_CHECK(esp_timer_create(&wifi_timer_args, &wifi_status_timer));
    ESP_ERROR_CHECK(esp_timer_create(&long_press_timer_args, &long_press_timer));

-    xTaskCreate(shutdown_load_sw_task, "shutdown_sw_task", configMINIMAL_STACK_SIZE * 3, NULL, 15, &shutdown_task_handle);
+    xTaskCreate(shutdown_load_sw_task, "shutdown_sw_task", configMINIMAL_STACK_SIZE * 3, NULL, 15,
+                &shutdown_task_handle);

    ESP_ERROR_CHECK(esp_timer_start_periodic(sensor_timer, 1000000));
    ESP_ERROR_CHECK(esp_timer_start_periodic(wifi_status_timer, 1000000 * 5));
--- a/main/service/setting.c
+++ b/main/service/setting.c
@@ -1,4 +1,5 @@
 #include <stdlib.h>
+#include "auth.h"
 #include "cJSON.h"
 #include "climit.h"
 #include "esp_http_server.h"
@@ -13,6 +14,12 @@ static const char* TAG = "webserver";

 static esp_err_t setting_get_handler(httpd_req_t* req)
 {
+    esp_err_t err = api_auth_check(req);
+    if (err != ESP_OK)
+    {
+        return err;
+    }
+
    wifi_ap_record_t ap_info;
    cJSON* root = cJSON_CreateObject();

@@ -103,6 +110,12 @@ static esp_err_t setting_get_handler(httpd_req_t* req)

 static esp_err_t wifi_scan(httpd_req_t* req)
 {
+    esp_err_t err = api_auth_check(req);
+    if (err != ESP_OK)
+    {
+        return err;
+    }
+
    wifi_ap_record_t* ap_records;
    uint16_t count;

@@ -133,6 +146,12 @@ static esp_err_t wifi_scan(httpd_req_t* req)

 static esp_err_t setting_post_handler(httpd_req_t* req)
 {
+    esp_err_t err = api_auth_check(req);
+    if (err != ESP_OK)
+    {
+        return err;
+    }
+
    char buf[512];
    int received = httpd_req_recv(req, buf, sizeof(buf) - 1);

@@ -158,6 +177,8 @@ static esp_err_t setting_post_handler(httpd_req_t* req)
    cJSON* vin_climit_item = cJSON_GetObjectItem(root, "vin_current_limit");
    cJSON* main_climit_item = cJSON_GetObjectItem(root, "main_current_limit");
    cJSON* usb_climit_item = cJSON_GetObjectItem(root, "usb_current_limit");
+    cJSON* new_username_item = cJSON_GetObjectItem(root, "new_username");
+    cJSON* new_password_item = cJSON_GetObjectItem(root, "new_password");

    if (mode_item && cJSON_IsString(mode_item))
    {
@@ -303,6 +324,17 @@ static esp_err_t setting_post_handler(httpd_req_t* req)
        }
        httpd_resp_sendstr(req, "{\"status\":\"current_limit_updated\"}");
    }
+    else if (new_username_item && cJSON_IsString(new_username_item) && new_password_item &&
+             cJSON_IsString(new_password_item))
+    {
+        const char* new_username = new_username_item->valuestring;
+        const char* new_password = new_password_item->valuestring;
+
+        nconfig_write(PAGE_USERNAME, new_username);
+        nconfig_write(PAGE_PASSWORD, new_password);
+        ESP_LOGI(TAG, "Username and password updated successfully.");
+        httpd_resp_sendstr(req, "{\"status\":\"user_credentials_updated\"}");
+    }
    else
    {
        httpd_resp_send_err(req, HTTPD_400_BAD_REQUEST, "Invalid payload");
--- a/main/service/system.c
+++ b/main/service/system.c
@@ -7,6 +7,7 @@
 #include <esp_log.h>
 #include <esp_timer.h>
 #include <string.h>
+#include "auth.h"
 #include "esp_http_server.h"
 #include "esp_system.h"

@@ -50,6 +51,12 @@ void start_reboot_timer(int sec)

 static esp_err_t reboot_post_handler(httpd_req_t* req)
 {
+    esp_err_t err = api_auth_check(req);
+    if (err != ESP_OK)
+    {
+        return err;
+    }
+
    httpd_resp_set_type(req, "application/json");
    const char* resp_str = "{\"status\": \"reboot timer started\"}";
    httpd_resp_send(req, resp_str, strlen(resp_str));
@@ -80,6 +87,12 @@ void register_reboot_endpoint(httpd_handle_t server)

 static esp_err_t version_get_handler(httpd_req_t* req)
 {
+    esp_err_t err = api_auth_check(req);
+    if (err != ESP_OK)
+    {
+        return err;
+    }
+
    httpd_resp_set_type(req, "application/json");
    char buf[100];
    sprintf(buf, "{\"version\": \"%s-%s\"}", VERSION_TAG, VERSION_HASH);
@@ -92,4 +105,4 @@ void register_version_endpoint(httpd_handle_t server)
    httpd_uri_t post_uri = {
        .uri = "/api/version", .method = HTTP_GET, .handler = version_get_handler, .user_ctx = NULL};
    httpd_register_uri_handler(server, &post_uri);
-}
+}
--- a/main/service/webserver.c
+++ b/main/service/webserver.c
@@ -1,7 +1,9 @@
 #include "webserver.h"
 #include <stdio.h>
 #include <string.h>
-#include "datalog.h"
+#include "auth.h"
+#include "cJSON.h"
+#include "dbg_console.h"
 #include "esp_http_server.h"
 #include "esp_log.h"
 #include "esp_wifi.h"
@@ -22,47 +24,149 @@ static esp_err_t index_handler(httpd_req_t* req)
    const size_t index_html_size = (index_html_end - index_html_start);

    httpd_resp_set_hdr(req, "Content-Encoding", "gzip");
+    httpd_resp_set_hdr(req, "Cache-Control", "max-age=3600");
    httpd_resp_set_type(req, "text/html");
-    httpd_resp_send(req, (const char*)index_html_start, index_html_size);

-    return ESP_OK;
-}
-
-static esp_err_t datalog_download_handler(httpd_req_t* req)
-{
-    const char* filepath = datalog_get_path();
-    FILE* f = fopen(filepath, "r");
-    if (f == NULL)
+    size_t remaining = index_html_size;
+    const char* ptr = (const char*)index_html_start;
+    while (remaining > 0)
    {
-        ESP_LOGE(TAG, "Failed to open datalog file for reading");
-        httpd_resp_send_404(req);
-        return ESP_FAIL;
-    }
-
-    httpd_resp_set_type(req, "text/csv");
-    httpd_resp_set_hdr(req, "Content-Disposition", "attachment; filename=\"datalog.csv\"");
-
-    char buffer[1024];
-    size_t bytes_read;
-    while ((bytes_read = fread(buffer, 1, sizeof(buffer), f)) > 0)
-    {
-        if (httpd_resp_send_chunk(req, buffer, bytes_read) != ESP_OK)
+        size_t to_send = remaining < 2048 ? remaining : 2048;
+        if (httpd_resp_send_chunk(req, ptr, to_send) != ESP_OK)
        {
            ESP_LOGE(TAG, "File sending failed!");
-            fclose(f);
            httpd_resp_send_chunk(req, NULL, 0);
            httpd_resp_send_500(req);
            return ESP_FAIL;
        }
+        ptr += to_send;
+        remaining -= to_send;
    }

-    fclose(f);
    httpd_resp_send_chunk(req, NULL, 0);
    return ESP_OK;
 }

+static esp_err_t login_handler(httpd_req_t* req)
+{
+    char content[100]; // Adjust size as needed for username/password
+    int ret = httpd_req_recv(req, content, sizeof(content) - 1); // -1 for null terminator
+    if (ret <= 0)
+    { // 0 means connection closed, < 0 means error
+        if (ret == HTTPD_SOCK_ERR_TIMEOUT)
+        {
+            httpd_resp_send_408(req);
+        }
+        return ESP_FAIL;
+    }
+    content[ret] = '\0'; // Null-terminate the received data
+
+    ESP_LOGI(TAG, "Received login request: %s", content);
+
+    cJSON* root = cJSON_Parse(content);
+    if (root == NULL)
+    {
+        httpd_resp_send_err(req, HTTPD_400_BAD_REQUEST, "Invalid JSON");
+        return ESP_FAIL;
+    }
+
+    cJSON* username_json = cJSON_GetObjectItemCaseSensitive(root, "username");
+    cJSON* password_json = cJSON_GetObjectItemCaseSensitive(root, "password");
+
+    if (!cJSON_IsString(username_json) || (username_json->valuestring == NULL) || !cJSON_IsString(password_json) ||
+        (password_json->valuestring == NULL))
+    {
+        cJSON_Delete(root);
+        httpd_resp_send_err(req, HTTPD_400_BAD_REQUEST, "Missing username or password");
+        return ESP_FAIL;
+    }
+
+    const char* received_username = username_json->valuestring;
+    const char* received_password = password_json->valuestring;
+
+    // Get stored username and password from nconfig
+    size_t stored_username_len = 0;
+    size_t stored_password_len = 0;
+    char* stored_username = NULL;
+    char* stored_password = NULL;
+    bool credentials_match = false;
+
+    if (nconfig_get_str_len(PAGE_USERNAME, &stored_username_len) == ESP_OK && stored_username_len > 1)
+    {
+        stored_username = (char*)malloc(stored_username_len);
+        if (stored_username)
+        {
+            if (nconfig_read(PAGE_USERNAME, stored_username, stored_username_len) != ESP_OK)
+            {
+                ESP_LOGE(TAG, "Failed to read stored username from nconfig");
+                free(stored_username);
+                stored_username = NULL;
+            }
+        }
+    }
+
+    if (nconfig_get_str_len(PAGE_PASSWORD, &stored_password_len) == ESP_OK && stored_password_len > 1)
+    {
+        stored_password = (char*)malloc(stored_password_len);
+        if (stored_password)
+        {
+            if (nconfig_read(PAGE_PASSWORD, stored_password, stored_password_len) != ESP_OK)
+            {
+                ESP_LOGE(TAG, "Failed to read stored password from nconfig");
+                free(stored_password);
+                stored_password = NULL;
+            }
+        }
+    }
+
+    if (stored_username && stored_password)
+    {
+        if (strcmp(received_username, stored_username) == 0 && strcmp(received_password, stored_password) == 0)
+        {
+            credentials_match = true;
+        }
+    }
+
+    if (stored_username)
+        free(stored_username);
+    if (stored_password)
+        free(stored_password);
+
+    if (credentials_match)
+    {
+        char* token = auth_generate_token();
+        if (token)
+        {
+            cJSON* response_root = cJSON_CreateObject();
+            cJSON_AddStringToObject(response_root, "token", token);
+            char* json_response = cJSON_Print(response_root);
+
+            httpd_resp_set_type(req, "application/json");
+            httpd_resp_sendstr(req, json_response);
+
+            free(token); // Free the token generated by auth_generate_token
+            free(json_response);
+            cJSON_Delete(response_root);
+        }
+        else
+        {
+            httpd_resp_send_err(req, HTTPD_500_INTERNAL_SERVER_ERROR, "Failed to generate token");
+        }
+    }
+    else
+    {
+        httpd_resp_send_err(req, HTTPD_401_UNAUTHORIZED, "Invalid credentials");
+    }
+
+    cJSON_Delete(root);
+    return ESP_OK;
+}
+
+
 void start_webserver(void)
 {
+    auth_init();
+
    httpd_handle_t server = NULL;
    httpd_config_t config = HTTPD_DEFAULT_CONFIG();
    config.stack_size = 1024 * 8;
@@ -79,9 +183,9 @@ void start_webserver(void)
    httpd_uri_t index = {.uri = "/", .method = HTTP_GET, .handler = index_handler, .user_ctx = NULL};
    httpd_register_uri_handler(server, &index);

-    httpd_uri_t datalog_uri = {
-        .uri = "/datalog.csv", .method = HTTP_GET, .handler = datalog_download_handler, .user_ctx = NULL};
-    httpd_register_uri_handler(server, &datalog_uri);
+    // Login endpoint
+    httpd_uri_t login = {.uri = "/login", .method = HTTP_POST, .handler = login_handler, .user_ctx = NULL};
+    httpd_register_uri_handler(server, &login);

    register_wifi_endpoint(server);
    register_ws_endpoint(server);
@@ -90,4 +194,6 @@ void start_webserver(void)
    register_version_endpoint(server);

    init_status_monitor();
+
+    initialize_dbg_console();
 }
--- a/main/service/webserver.h
+++ b/main/service/webserver.h
@@ -5,9 +5,9 @@
 #ifndef ODROID_REMOTE_HTTP_WEBSERVER_H
 #define ODROID_REMOTE_HTTP_WEBSERVER_H

-#include "esp_http_server.h"
 #include <stddef.h>
 #include <stdint.h>
+#include "esp_http_server.h"

 void register_wifi_endpoint(httpd_handle_t server);
 void register_ws_endpoint(httpd_handle_t server);
--- a/main/service/ws.c
+++ b/main/service/ws.c
@@ -2,15 +2,18 @@
 // Created by shinys on 25. 8. 18..
 //

+#include "auth.h"
 #include "driver/uart.h"
 #include "esp_err.h"
 #include "esp_http_server.h"
 #include "esp_log.h"
+#include "freertos/FreeRTOS.h"
 #include "freertos/semphr.h"
 #include "nconfig.h"
 #include "pb.h"
 #include "pb_encode.h"
 #include "status.pb.h"
+#include "string.h" // Added for strlen and strncmp
 #include "webserver.h"

 #define UART_NUM UART_NUM_1
@@ -204,6 +207,57 @@ static esp_err_t ws_handler(httpd_req_t* req)
 {
    if (req->method == HTTP_GET)
    {
+        ESP_LOGI(TAG, "WebSocket GET request received for URI: %s", req->uri);
+
+        char* query_str = NULL;
+        size_t query_len = httpd_req_get_url_query_len(req) + 1;
+        if (query_len > 1)
+        {
+            query_str = malloc(query_len);
+            if (query_str == NULL)
+            {
+                ESP_LOGE(TAG, "Failed to allocate memory for query string");
+                httpd_resp_send_err(req, HTTPD_500_INTERNAL_SERVER_ERROR, "Internal Server Error");
+                return ESP_FAIL;
+            }
+            if (httpd_req_get_url_query_str(req, query_str, query_len) != ESP_OK)
+            {
+                ESP_LOGE(TAG, "Failed to get query string from URI: %s", req->uri);
+                free(query_str);
+                httpd_resp_send_err(req, HTTPD_500_INTERNAL_SERVER_ERROR, "Internal Server Error");
+                return ESP_FAIL;
+            }
+            ESP_LOGI(TAG, "Extracted query string: %s", query_str);
+        }
+
+        char token_str[TOKEN_LENGTH];
+        esp_err_t err = ESP_FAIL; // Default to fail
+
+        if (query_str)
+        {
+            err = httpd_query_key_value(query_str, "token", token_str, sizeof(token_str));
+            free(query_str); // Free allocated query string
+        }
+
+        if (err == ESP_OK)
+        {
+            ESP_LOGI(TAG, "Token extracted from query string, value: %s", token_str);
+            if (!auth_validate_token(token_str))
+            {
+                ESP_LOGW(TAG, "WebSocket connection attempt with invalid token for URI: %s", req->uri);
+                httpd_resp_send_err(req, HTTPD_401_UNAUTHORIZED, "Invalid or expired token");
+                return ESP_FAIL;
+            }
+            ESP_LOGD(TAG, "WebSocket token validated for URI: %s", req->uri);
+        }
+        else
+        {
+            ESP_LOGW(TAG, "Failed to extract token from query string or query string not found, error: %s",
+                     esp_err_to_name(err));
+            httpd_resp_send_err(req, HTTPD_401_UNAUTHORIZED, "Authorization token required");
+            return ESP_FAIL;
+        }
+
        ESP_LOGI(TAG, "Handshake done, the new connection was opened");
        return ESP_OK;
    }
@@ -211,7 +265,6 @@ static esp_err_t ws_handler(httpd_req_t* req)
    httpd_ws_frame_t ws_pkt = {0};
    uint8_t buf[BUF_SIZE];
    ws_pkt.payload = buf;
-    ws_pkt.type = HTTPD_WS_TYPE_BINARY;

    esp_err_t ret = httpd_ws_recv_frame(req, &ws_pkt, BUF_SIZE);
    if (ret != ESP_OK)
@@ -220,7 +273,33 @@ static esp_err_t ws_handler(httpd_req_t* req)
        return ret;
    }

-    uart_write_bytes(UART_NUM, (const char*)ws_pkt.payload, ws_pkt.len);
+    if (ws_pkt.type == HTTPD_WS_TYPE_TEXT && ws_pkt.len == strlen("ping") &&
+        strncmp((const char*)ws_pkt.payload, "ping", ws_pkt.len) == 0)
+    {
+        ESP_LOGD(TAG, "Received application-level ping from client, sending pong.");
+        httpd_ws_frame_t pong_pkt = {
+            .payload = (uint8_t*)"pong", .len = strlen("pong"), .type = HTTPD_WS_TYPE_TEXT, .final = true};
+        return httpd_ws_send_frame(req, &pong_pkt);
+    }
+    else if (ws_pkt.type == HTTPD_WS_TYPE_CLOSE)
+    {
+        ESP_LOGI(TAG, "Client sent close frame, closing connection.");
+        return ESP_OK;
+    }
+    else if (ws_pkt.type == HTTPD_WS_TYPE_PING)
+    {
+        ESP_LOGD(TAG, "Received WebSocket PING control frame (handled by httpd).");
+        return ESP_OK;
+    }
+    else if (ws_pkt.type == HTTPD_WS_TYPE_PONG)
+    {
+        ESP_LOGD(TAG, "Received WebSocket PONG control frame.");
+        return ESP_OK;
+    }
+    else
+    {
+        uart_write_bytes(UART_NUM, (const char*)ws_pkt.payload, ws_pkt.len);
+    }

    return ESP_OK;
 }
@@ -274,4 +353,4 @@ void push_data_to_ws(const uint8_t* data, size_t len)
    }
 }

-esp_err_t change_baud_rate(int baud_rate) { return uart_set_baudrate(UART_NUM, baud_rate); }
+esp_err_t change_baud_rate(int baud_rate) { return uart_set_baudrate(UART_NUM, baud_rate); }
--- a/main/wifi/priv_wifi.h
+++ b/main/wifi/priv_wifi.h
@@ -8,5 +8,6 @@
 void wifi_init_sta(void);
 void wifi_init_ap(void);
 void initialize_sntp(void);
+void wifi_set_auto_reconnect(bool enable);

 #endif // ODROID_POWER_MATE_PRIV_WIFI_H
--- a/main/wifi/sta.c
+++ b/main/wifi/sta.c
@@ -81,6 +81,14 @@ void wifi_scan_aps(wifi_ap_record_t** ap_records, uint16_t* count)
    *count = 0;
    *ap_records = NULL;

+    wifi_set_auto_reconnect(false);
+
+    wifi_ap_record_t ap_info;
+    if (esp_wifi_sta_get_ap_info(&ap_info) != ESP_OK)
+    {
+        esp_wifi_disconnect();
+    }
+
    // Start scan, this is a blocking call
    if (esp_wifi_scan_start(NULL, true) == ESP_OK)
    {
@@ -100,6 +108,16 @@ void wifi_scan_aps(wifi_ap_record_t** ap_records, uint16_t* count)
            }
        }
    }
+
+    wifi_set_auto_reconnect(true);
+
+    if (esp_wifi_sta_get_ap_info(&ap_info) != ESP_OK)
+    {
+        if (!nconfig_value_is_not_set(WIFI_SSID))
+        {
+            wifi_connect();
+        }
+    }
 }

 esp_err_t wifi_get_current_ap_info(wifi_ap_record_t* ap_info)
--- a/main/wifi/wifi.c
+++ b/main/wifi/wifi.c
@@ -16,9 +16,13 @@
 #include "wifi.h"

 #include "indicator.h"
+static bool s_auto_reconnect = true;

 static const char* TAG = "WIFI";

+void wifi_set_auto_reconnect(bool enable) { s_auto_reconnect = enable; }
+
+
 static void wifi_event_handler(void* arg, esp_event_base_t event_base, int32_t event_id, void* event_data)
 {
    if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_AP_STACONNECTED)
@@ -46,10 +50,18 @@ static void wifi_event_handler(void* arg, esp_event_base_t event_base, int32_t e
    }
    else if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_DISCONNECTED)
    {
-        led_set(LED_RED, BLINK_TRIPLE);
+        led_set(LED_BLU, BLINK_TRIPLE);
        wifi_event_sta_disconnected_t* event = (wifi_event_sta_disconnected_t*)event_data;
        ESP_LOGW(TAG, "Disconnected from AP, reason: %s", wifi_reason_str(event->reason));
-        // ESP-IDF will automatically try to reconnect by default.
+
+        if (event->reason != WIFI_REASON_ASSOC_LEAVE)
+        {
+            if (s_auto_reconnect && !nconfig_value_is_not_set(WIFI_SSID))
+            {
+                ESP_LOGI(TAG, "Connection lost, attempting to reconnect...");
+                esp_wifi_connect();
+            }
+        }
    }
    else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP)
    {
--- a/page/index.html
+++ b/page/index.html
@@ -8,7 +8,33 @@
 </head>
 <body>

-<main class="container">
+<div id="login-container" class="d-flex flex-column justify-content-center align-items-center vh-100" style="display: none;">
+    <div class="card p-4 shadow-lg" style="width: 100%; max-width: 400px;">
+        <div class="card-body">
+            <h2 class="card-title text-center mb-4">Login to ODROID Power Mate</h2>
+            <div id="login-alert" class="alert alert-danger d-none" role="alert"></div>
+            <form id="login-form">
+                <div class="mb-3">
+                    <label for="username" class="form-label">Username</label>
+                    <input type="text" class="form-control" id="username" required>
+                </div>
+                <div class="mb-3">
+                    <label for="password" class="form-label">Password</label>
+                    <input type="password" class="form-control" id="password" required>
+                </div>
+                <div class="d-grid">
+                    <button type="submit" class="btn btn-primary">Login</button>
+                </div>
+            </form>
+            <div class="form-check form-switch d-flex justify-content-center mt-4">
+                <input class="form-check-input" type="checkbox" role="switch" id="theme-toggle-login">
+                <label class="form-check-label ms-2" for="theme-toggle-login"><i id="theme-icon-login" class="bi bi-moon-stars-fill"></i></label>
+            </div>
+        </div>
+    </div>
+</div>
+
+<main class="container" style="display: none;">
    <header class="d-flex justify-content-between align-items-center mb-3 main-header">
        <div class="order-md-1" style="flex: 1;">
            <div class="d-flex align-items-center">
@@ -27,7 +53,10 @@
                <span id="power-display" class="text-primary">--.-- W</span>
            </div>
        </div>
-        <h1 class="text-primary text-center order-md-2 mx-auto">ODROID Power Mate</h1>
+        <div class="text-center order-md-2 mx-auto">
+            <h1 class="text-primary mb-0">ODROID Power Mate</h1>
+            <small class="text-muted" id="version-info"></small>
+        </div>
        <div class="d-flex align-items-center justify-content-end order-md-3 header-controls" style="flex: 1;">
            <div class="form-check form-switch">
                <input class="form-check-input" type="checkbox" role="switch" id="theme-toggle">
@@ -37,6 +66,9 @@
                    data-bs-target="#settingsModal">
                <i class="bi bi-gear"></i>
            </button>
+            <button class="btn btn-outline-secondary ms-3" id="logout-button">
+                <i class="bi bi-box-arrow-right"></i>
+            </button>
        </div>
    </header>

@@ -130,12 +162,9 @@
    </div>
 </main>

-<footer class="bg-body-tertiary text-center p-3 position-relative">
+<footer class="bg-body-tertiary text-center p-3">
    <a href="https://www.hardkernel.com/" target="_blank" class="link-secondary text-decoration-none">Hardkernel</a> |
    <a href="https://wiki.odroid.com/start" target="_blank" class="link-secondary text-decoration-none">Wiki</a>
-    <div class="position-absolute end-0 top-50 translate-middle-y pe-3">
-        <small class="text-muted" id="version-info"></small>
-    </div>
 </footer>

 <!-- Settings Modal -->
@@ -168,6 +197,11 @@
                                id="current-limit-settings-tab" role="tab" type="button">Current Limit
                        </button>
                    </li>
+                    <li class="nav-item" role="presentation">
+                        <button class="nav-link" data-bs-target="#user-settings-pane" data-bs-toggle="tab"
+                                id="user-settings-tab" role="tab" type="button">User Settings
+                        </button>
+                    </li>
                    <li class="nav-item" role="presentation">
                        <button class="nav-link" id="device-settings-tab" data-bs-toggle="tab"
                                data-bs-target="#device-settings-pane" type="button" role="tab">Device
@@ -302,6 +336,28 @@
                            <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Close</button>
                        </div>
                    </div>
+                    <div class="tab-pane fade" id="user-settings-pane" role="tabpanel">
+                        <form id="user-settings-form">
+                            <div class="mb-3">
+                                <label class="form-label" for="new-username">New Username</label>
+                                <input class="form-control" id="new-username" required type="text">
+                            </div>
+                            <div class="mb-3">
+                                <label class="form-label" for="new-password">New Password</label>
+                                <input class="form-control" id="new-password" required type="password">
+                            </div>
+                            <div class="mb-3">
+                                <label class="form-label" for="confirm-password">Confirm New Password</label>
+                                <input class="form-control" id="confirm-password" required type="password">
+                            </div>
+                            <div class="d-flex justify-content-end pt-3 border-top mt-3">
+                                <button class="btn btn-primary me-2" id="user-settings-apply-button" type="submit">
+                                    Apply
+                                </button>
+                                <button class="btn btn-secondary" data-bs-dismiss="modal" type="button">Close</button>
+                            </div>
+                        </form>
+                    </div>
                    <div class="tab-pane fade" id="device-settings-pane" role="tabpanel">
                        <div class="mb-3">
                            <label for="baud-rate-select" class="form-label">UART Baud Rate</label>
--- a/page/src/api.js
+++ b/page/src/api.js
@@ -4,15 +4,63 @@
 * It abstracts the fetch logic, error handling, and JSON parsing for network and control operations.
 */

+// Function to get authentication headers
+export function getAuthHeaders() {
+    const token = localStorage.getItem('authToken');
+    if (token) {
+        return { 'Authorization': `Bearer ${token}` };
+    }
+    return {};
+}
+
+// Global error handler for unauthorized responses
+export async function handleResponse(response) {
+    if (response.status === 401) {
+        // Unauthorized, log out the user
+        localStorage.removeItem('authToken');
+        // Redirect to login or trigger a logout event
+        // For now, we'll just reload the page, which will trigger the login screen
+        window.location.reload();
+        throw new Error('Unauthorized: Session expired or invalid token.');
+    }
+    if (!response.ok) {
+        const errorText = await response.text();
+        throw new Error(errorText || `HTTP error! status: ${response.status}`);
+    }
+    return response;
+}
+
+/**
+ * Authenticates a user with the provided username and password.
+ * @param {string} username The user's username.
+ * @param {string} password The user's password.
+ * @returns {Promise<Object>} A promise that resolves to the server's JSON response containing a token.
+ * @throws {Error} Throws an error if the authentication fails.
+ */
+export async function login(username, password) {
+    const response = await fetch('/login', {
+        method: 'POST',
+        headers: {'Content-Type': 'application/json'},
+        body: JSON.stringify({ username, password }),
+    });
+    // Login function does not use handleResponse as it's for obtaining the token
+    if (!response.ok) {
+        const errorText = await response.text();
+        throw new Error(errorText || `Login failed with status: ${response.status}`);
+    }
+    return await response.json();
+}
+
 /**
 * Fetches the list of available Wi-Fi networks from the server.
 * @returns {Promise<Array<Object>>} A promise that resolves to an array of Wi-Fi access point objects.
 * @throws {Error} Throws an error if the network request fails.
 */
 export async function fetchWifiScan() {
-    const response = await fetch('/api/wifi/scan');
-    if (!response.ok) throw new Error(`HTTP error! status: ${response.status}`);
-    return await response.json();
+    const response = await fetch('/api/wifi/scan', {
+        headers: getAuthHeaders(),
+    });
+    return await handleResponse(response).then(res => res.json());
 }

 /**
@@ -23,16 +71,15 @@ export async function fetchWifiScan() {
 * @throws {Error} Throws an error if the connection request fails.
 */
 export async function postWifiConnect(ssid, password) {
-    const response = await fetch('/api/setting', { // Updated URL
+    const response = await fetch('/api/setting', {
        method: 'POST',
-        headers: {'Content-Type': 'application/json'},
+        headers: {
+            'Content-Type': 'application/json',
+            ...getAuthHeaders(),
+        },
        body: JSON.stringify({ssid, password}),
    });
-    if (!response.ok) {
-        const errorText = await response.text();
-        throw new Error(errorText || `Connection failed with status: ${response.status}`);
-    }
-    return await response.json();
+    return await handleResponse(response).then(res => res.json());
 }

 /**
@@ -42,16 +89,15 @@ export async function postWifiConnect(ssid, password) {
 * @throws {Error} Throws an error if the request fails.
 */
 export async function postNetworkSettings(payload) {
-    const response = await fetch('/api/setting', { // Updated URL
+    const response = await fetch('/api/setting', {
        method: 'POST',
-        headers: {'Content-Type': 'application/json'},
+        headers: {
+            'Content-Type': 'application/json',
+            ...getAuthHeaders(),
+        },
        body: JSON.stringify(payload),
    });
-    if (!response.ok) {
-        const errorText = await response.text();
-        throw new Error(errorText || `Failed to apply settings with status: ${response.status}`);
-    }
-    return response;
+    return await handleResponse(response);
 }

 /**
@@ -63,14 +109,13 @@ export async function postNetworkSettings(payload) {
 export async function postBaudRateSetting(baudrate) {
    const response = await fetch('/api/setting', {
        method: 'POST',
-        headers: {'Content-Type': 'application/json'},
+        headers: {
+            'Content-Type': 'application/json',
+            ...getAuthHeaders(),
+        },
        body: JSON.stringify({baudrate}),
    });
-    if (!response.ok) {
-        const errorText = await response.text();
-        throw new Error(errorText || `Failed to apply baudrate with status: ${response.status}`);
-    }
-    return response;
+    return await handleResponse(response);
 }

 /**
@@ -79,9 +124,10 @@ export async function postBaudRateSetting(baudrate) {
 * @throws {Error} Throws an error if the network request fails.
 */
 export async function fetchSettings() {
-    const response = await fetch('/api/setting'); // Updated URL
-    if (!response.ok) throw new Error(`HTTP error! status: ${response.status}`);
-    return await response.json();
+    const response = await fetch('/api/setting', {
+        headers: getAuthHeaders(),
+    });
+    return await handleResponse(response).then(res => res.json());
 }

 /**
@@ -90,9 +136,10 @@ export async function fetchSettings() {
 * @throws {Error} Throws an error if the network request fails.
 */
 export async function fetchControlStatus() {
-    const response = await fetch('/api/control');
-    if (!response.ok) throw new Error(`HTTP error! status: ${response.status}`);
-    return await response.json();
+    const response = await fetch('/api/control', {
+        headers: getAuthHeaders(),
+    });
+    return await handleResponse(response).then(res => res.json());
 }

 /**
@@ -104,11 +151,13 @@ export async function fetchControlStatus() {
 export async function postControlCommand(command) {
    const response = await fetch('/api/control', {
        method: 'POST',
-        headers: {'Content-Type': 'application/json'},
+        headers: {
+            'Content-Type': 'application/json',
+            ...getAuthHeaders(),
+        },
        body: JSON.stringify(command)
    });
-    if (!response.ok) throw new Error(`HTTP error! status: ${response.status}`);
-    return response;
+    return await handleResponse(response);
 }

 /**
@@ -117,7 +166,27 @@ export async function postControlCommand(command) {
 * @throws {Error} Throws an error if the network request fails.
 */
 export async function fetchVersion() {
-    const response = await fetch('/api/version');
-    if (!response.ok) throw new Error(`HTTP error! status: ${response.status}`);
-    return await response.json();
+    const response = await fetch('/api/version', {
+        headers: getAuthHeaders(),
+    });
+    return await handleResponse(response).then(res => res.json());
+}
+
+/**
+ * Updates the user's username and password on the server.
+ * @param {string} newUsername The new username.
+ * @param {string} newPassword The new password.
+ * @returns {Promise<Object>} A promise that resolves to the server's JSON response.
+ * @throws {Error} Throws an error if the update fails.
+ */
+export async function updateUserSettings(newUsername, newPassword) {
+    const response = await fetch('/api/setting', {
+        method: 'POST',
+        headers: {
+            'Content-Type': 'application/json',
+            ...getAuthHeaders(),
+        },
+        body: JSON.stringify({new_username: newUsername, new_password: newPassword}),
+    });
+    return await handleResponse(response).then(res => res.json());
 }
--- a/page/src/events.js
+++ b/page/src/events.js
@@ -7,6 +7,7 @@

 import * as dom from './dom.js';
 import * as api from './api.js';
+import {getAuthHeaders, handleResponse} from './api.js'; // Import auth functions
 import * as ui from './ui.js';
 import {clearTerminal, downloadTerminalOutput, fitTerminal} from './terminal.js';
 import {debounce, isMobile} from './utils.js';
@@ -28,7 +29,10 @@ function updateSliderValue(slider, span) {
 }

 function loadCurrentLimitSettings() {
-    fetch('/api/setting')
+    fetch('/api/setting', {
+        headers: getAuthHeaders(), // Add auth headers
+    })
+        .then(handleResponse) // Handle response for 401
        .then(response => response.json())
        .then(data => {
            if (data.vin_current_limit !== undefined) {
@@ -56,14 +60,6 @@ export function setupEventListeners() {
        console.log("Event listeners already attached. Skipping.");
        return;
    }
-    console.log("Attaching event listeners...");
-
-    // --- Theme Toggle ---
-    dom.themeToggle.addEventListener('change', () => {
-        const newTheme = dom.themeToggle.checked ? 'dark' : 'light';
-        localStorage.setItem('theme', newTheme);
-        ui.applyTheme(newTheme);
-    });

    // --- Terminal Controls ---
    dom.clearButton.addEventListener('click', clearTerminal);
@@ -86,8 +82,12 @@ export function setupEventListeners() {
    if (dom.rebootButton) {
        dom.rebootButton.addEventListener('click', () => {
            if (confirm('Are you sure you want to reboot the device?')) {
-                fetch('/api/reboot', {method: 'POST'})
-                    .then(response => response.ok ? response.json() : Promise.reject('Network response was not ok'))
+                fetch('/api/reboot', {
+                    method: 'POST',
+                    headers: getAuthHeaders(), // Add auth headers
+                })
+                    .then(handleResponse) // Handle response for 401
+                    .then(response => response.json())
                    .then(data => {
                        console.log('Reboot command sent:', data);
                        ui.hideSettingsModal();
@@ -115,10 +115,14 @@ export function setupEventListeners() {

        fetch('/api/setting', {
            method: 'POST',
-            headers: {'Content-Type': 'application/json'},
+            headers: {
+                'Content-Type': 'application/json',
+                ...getAuthHeaders(), // Add auth headers
+            },
            body: JSON.stringify(settings),
        })
-            .then(response => response.ok ? response.json() : Promise.reject('Failed to apply settings'))
+            .then(handleResponse) // Handle response for 401
+            .then(response => response.json())
            .then(data => {
                console.log('Current limit settings applied:', data);
            })
@@ -184,5 +188,4 @@ export function setupEventListeners() {
    window.addEventListener('resize', debounce(ui.handleResize, 150));

    listenersAttached = true;
-    console.log("Event listeners attached successfully.");
 }
--- a/page/src/main.js
+++ b/page/src/main.js
@@ -31,20 +31,36 @@ import {setupEventListeners} from './events.js';
 // --- Globals ---
 // StatusMessage is imported directly from the generated proto.js file.

+// --- DOM Elements ---
+const loginContainer = document.getElementById('login-container');
+const mainContent = document.querySelector('main.container');
+const loginForm = document.getElementById('login-form');
+const usernameInput = document.getElementById('username');
+const passwordInput = document.getElementById('password');
+const loginAlert = document.getElementById('login-alert');
+const logoutButton = document.getElementById('logout-button');
+const themeToggleLogin = document.getElementById('theme-toggle-login');
+const themeIconLogin = document.getElementById('theme-icon-login');
+const themeToggleMain = document.getElementById('theme-toggle');
+const themeIconMain = document.getElementById('theme-icon');
+
+// User Settings DOM Elements
+const userSettingsForm = document.getElementById('user-settings-form');
+const newUsernameInput = document.getElementById('new-username');
+const newPasswordInput = document.getElementById('new-password');
+const confirmPasswordInput = document.getElementById('confirm-password');
+
+
 // --- WebSocket Event Handlers ---

 function onWsOpen() {
    updateWebsocketStatus(true);
-    if (term) {
-        term.write('\x1b[32mConnected to WebSocket Server\x1b[0m\r\n');
-    }
+    console.log('Connected to WebSocket Server');
 }

 function onWsClose() {
    updateWebsocketStatus(false);
-    if (term) {
-        term.write('\r\n\x1b[31mConnection closed. Reconnecting...\x1b[0m\r\n');
-    }
+    console.warn('Connection closed. Reconnecting...');
    setTimeout(connect, 2000);
 }

@@ -111,6 +127,112 @@ function onWsMessage(event) {
    }
 }

+// --- Authentication Functions ---
+
+function checkAuth() {
+    const token = localStorage.getItem('authToken');
+    if (token) {
+        return true;
+    } else {
+        return false;
+    }
+}
+
+async function handleLogin(event) {
+    event.preventDefault();
+    const username = usernameInput.value;
+    const password = passwordInput.value;
+
+    try {
+        const response = await api.login(username, password);
+        if (response && response.token) {
+            localStorage.setItem('authToken', response.token);
+            loginAlert.classList.add('d-none');
+            loginContainer.style.setProperty('display', 'none', 'important');
+            initializeMainAppContent(); // After successful login, initialize the main app
+        } else {
+            loginAlert.textContent = 'Login failed: No token received.';
+            loginAlert.classList.remove('d-none');
+        }
+    } catch (error) {
+        console.error('Login error:', error);
+        loginAlert.textContent = `Login failed: ${error.message}`;
+        loginAlert.classList.remove('d-none');
+    }
+}
+
+function handleLogout() {
+    localStorage.removeItem('authToken');
+    // Hide main content and show login form
+    loginContainer.style.setProperty('display', 'flex', 'important');
+    mainContent.style.setProperty('display', 'none', 'important');
+    // Optionally, disconnect WebSocket or perform other cleanup
+    // For now, just hide the main content.
+}
+
+// --- User Settings Functions ---
+async function handleUserSettingsSubmit(event) {
+    event.preventDefault();
+
+    const newUsername = newUsernameInput.value;
+    const newPassword = newPasswordInput.value;
+    const confirmPassword = confirmPasswordInput.value;
+
+    if (!newUsername || !newPassword || !confirmPassword) {
+        alert('Please fill in all fields for username and password.');
+        return;
+    }
+
+    if (newPassword !== confirmPassword) {
+        alert('New password and confirm password do not match.');
+        return;
+    }
+
+    try {
+        const response = await api.updateUserSettings(newUsername, newPassword);
+        if (response && response.status === 'user_credentials_updated') {
+            alert('Username and password updated successfully. Please log in again with new credentials.');
+            handleLogout(); // Force logout to re-authenticate with new credentials
+        } else {
+            alert(`Failed to update credentials: ${response.message || 'Unknown error'}`);
+        }
+    } catch (error) {
+        console.error('Error updating user settings:', error);
+        alert(`Error updating user settings: ${error.message}`);
+    }
+}
+
+// --- Theme Toggle Functions ---
+function setupThemeToggles() {
+    // Initialize theme for login page
+    const savedTheme = localStorage.getItem('theme') || (window.matchMedia('(prefers-color-scheme: dark)').matches ? 'dark' : 'light');
+    applyTheme(savedTheme);
+    themeToggleLogin.checked = savedTheme === 'dark';
+    themeIconLogin.className = savedTheme === 'dark' ? 'bi bi-moon-stars-fill' : 'bi bi-sun-fill';
+
+    // Sync main theme toggle with login theme toggle (initial state)
+    themeToggleMain.checked = savedTheme === 'dark';
+    themeIconMain.className = savedTheme === 'dark' ? 'bi bi-moon-stars-fill' : 'bi bi-sun-fill';
+
+    themeToggleLogin.addEventListener('change', () => {
+        const newTheme = themeToggleLogin.checked ? 'dark' : 'light';
+        applyTheme(newTheme);
+        localStorage.setItem('theme', newTheme);
+        themeIconLogin.className = newTheme === 'dark' ? 'bi bi-moon-stars-fill' : 'bi bi-sun-fill';
+        themeToggleMain.checked = themeToggleLogin.checked; // Keep main toggle in sync
+        themeIconMain.className = themeIconLogin.className; // Keep main icon in sync
+    });
+
+    themeToggleMain.addEventListener('change', () => {
+        const newTheme = themeToggleMain.checked ? 'dark' : 'light';
+        applyTheme(newTheme);
+        localStorage.setItem('theme', newTheme);
+        themeIconMain.className = newTheme === 'dark' ? 'bi bi-moon-stars-fill' : 'bi bi-sun-fill';
+        themeToggleLogin.checked = themeToggleMain.checked; // Keep login toggle in sync
+        themeIconLogin.className = themeIconMain.className; // Keep login icon in sync
+    });
+}
+

 // --- Application Initialization ---

@@ -131,17 +253,41 @@ function connect() {
    initWebSocket({ onOpen: onWsOpen, onClose: onWsClose, onMessage: onWsMessage });
 }

-function initialize() {
+// New function to initialize main app content after successful login or on initial load if authenticated
+function initializeMainAppContent() {
+    loginContainer.style.setProperty('display', 'none', 'important');
+    mainContent.style.setProperty('display', 'block', 'important');
+
    initUI();
    setupTerminal();
    initializeVersion();
-
-    const savedTheme = localStorage.getItem('theme') || (window.matchMedia('(prefers-color-scheme: dark)').matches ? 'dark' : 'light');
-    applyTheme(savedTheme);
-
-    setupEventListeners();
-
+    setupEventListeners(); // Attach main app event listeners
+    logoutButton.addEventListener('click', handleLogout); // Attach logout listener
    connect();
+
+    // Attach user settings form listener
+    if (userSettingsForm) {
+        userSettingsForm.addEventListener('submit', handleUserSettingsSubmit);
+    }
+}
+
+function initialize() {
+    setupThemeToggles(); // Setup theme toggles for both login and main (initial sync)
+
+    // Always attach login form listener
+    loginForm.addEventListener('submit', handleLogin);
+
+    if (!checkAuth()) { // If NOT authenticated
+        // Show login form
+        loginContainer.style.setProperty('display', 'flex', 'important');
+        mainContent.style.setProperty('display', 'none', 'important');
+        console.log('Not authenticated. Login form displayed. Main app content NOT initialized.');
+        return; // IMPORTANT: Stop execution here if not authenticated
+    }
+
+    // If authenticated, initialize main content
+    console.log('Authenticated. Initializing main app content.');
+    initializeMainAppContent();
 }

 // --- Start Application ---
--- a/page/src/style.css
+++ b/page/src/style.css
@@ -114,6 +114,10 @@ footer a {

 /* Mobile Optimizations */
@media (max-width: 767.98px) {
+    #login-container {
+        height: 100%;
+    }
+
    .main-header {
        flex-direction: column;
    }
--- a/page/src/websocket.js
+++ b/page/src/websocket.js
@@ -2,32 +2,116 @@
 * @file websocket.js
 * @description This module handles the WebSocket connection for real-time, two-way
 * communication with the server. It provides functions to initialize the connection
- * and send messages.
+ * and send messages, including a heartbeat mechanism to detect disconnections.
 */

 // The WebSocket instance, exported for potential direct access if needed.
 export let websocket;

 // The WebSocket server address, derived from the current page's host (hostname + port).
-const gateway = `ws://${window.location.host}/ws`;
+const baseGateway = `ws://${window.location.host}/ws`;
+
+// Heartbeat related variables
+let pingIntervalId = null;
+let pongTimeoutId = null;
+const HEARTBEAT_INTERVAL = 10000; // 10 seconds: How often to send a 'ping'
+const HEARTBEAT_TIMEOUT = 5000; // 5 seconds: How long to wait for a 'pong' after sending a 'ping'

 /**
- * Initializes the WebSocket connection and sets up event handlers.
- * @param {Object} callbacks - An object containing callback functions for WebSocket events.
- * @param {function} callbacks.onOpen - Called when the connection is successfully opened.
- * @param {function} callbacks.onClose - Called when the connection is closed.
- * @param {function} callbacks.onMessage - Called when a message is received from the server.
+ * Starts the heartbeat mechanism.
+ * Sends a 'ping' message to the server at regular intervals and sets a timeout
+ * to detect if a 'pong' response is not received.
 */
-export function initWebSocket({onOpen, onClose, onMessage}) {
+function startHeartbeat() {
+    stopHeartbeat(); // Ensure any previous heartbeat is stopped before starting a new one
+
+    pingIntervalId = setInterval(() => {
+        if (websocket && websocket.readyState === WebSocket.OPEN) {
+            websocket.send('ping');
+
+            // Set a timeout to check if a pong is received within HEARTBEAT_TIMEOUT
+            pongTimeoutId = setTimeout(() => {
+                console.warn('WebSocket: No pong received within timeout, closing connection.');
+                // If no pong is received, close the connection. This will trigger the onClose handler.
+                websocket.close();
+            }, HEARTBEAT_TIMEOUT);
+        }
+    }, HEARTBEAT_INTERVAL);
+}
+
+/**
+ * Stops the heartbeat mechanism by clearing the ping interval and pong timeout.
+ */
+function stopHeartbeat() {
+    if (pingIntervalId) {
+        clearInterval(pingIntervalId);
+        pingIntervalId = null;
+    }
+    if (pongTimeoutId) {
+        clearTimeout(pongTimeoutId);
+        pongTimeoutId = null;
+    }
+}
+
+/**
+ * Initializes the WebSocket connection and sets up event handlers, including a heartbeat mechanism.
+ * @param {Object} callbacks - An object containing callback functions for WebSocket events.
+ * @param {function} [callbacks.onOpen] - Called when the connection is successfully opened.
+ * @param {function} [callbacks.onClose] - Called when the connection is closed.
+ * @param {function} [callbacks.onMessage] - Called when a message is received from the server (excluding 'pong' messages).
+ * @param {function} [callbacks.onError] - Called when an error occurs with the WebSocket connection.
+ */
+export function initWebSocket({onOpen, onClose, onMessage, onError}) {
+    const token = localStorage.getItem('authToken');
+    let gateway = baseGateway;
+
+    if (token) {
+        gateway = `${baseGateway}?token=${token}`;
+    }
+
    console.log(`Trying to open a WebSocket connection to ${gateway}...`);
    websocket = new WebSocket(gateway);
    // Set binary type to arraybuffer to handle raw binary data from the UART.
    websocket.binaryType = "arraybuffer";

-    // Assign event handlers from the provided callbacks
-    if (onOpen) websocket.onopen = onOpen;
-    if (onClose) websocket.onclose = onClose;
-    if (onMessage) websocket.onmessage = onMessage;
+    // Assign event handlers, wrapping user-provided callbacks to include heartbeat logic
+    websocket.onopen = (event) => {
+        console.log('WebSocket connection opened.');
+        startHeartbeat(); // Start heartbeat on successful connection
+        if (onOpen) {
+            onOpen(event);
+        }
+    };
+
+    websocket.onclose = (event) => {
+        console.log('WebSocket connection closed:', event);
+        stopHeartbeat(); // Stop heartbeat when connection closes
+        if (onClose) {
+            onClose(event);
+        }
+    };
+
+    websocket.onmessage = (event) => {
+        if (event.data === 'pong') {
+            // Clear the timeout as pong was received, resetting for the next ping
+            clearTimeout(pongTimeoutId);
+            pongTimeoutId = null;
+        } else {
+            // If it's not a pong message, pass it to the user's onMessage callback
+            if (onMessage) {
+                onMessage(event);
+            } else {
+                console.log('WebSocket message received:', event.data);
+            }
+        }
+    };
+
+    websocket.onerror = (error) => {
+        console.error('WebSocket error:', error);
+        if (onError) {
+            onError(error);
+        }
+    };
 }

 /**
@@ -37,5 +121,7 @@ export function initWebSocket({onOpen, onClose, onMessage}) {
 export function sendWebsocketMessage(data) {
    if (websocket && websocket.readyState === WebSocket.OPEN) {
        websocket.send(data);
+    } else {
+        console.warn('WebSocket is not open. Message not sent:', data);
    }
-}
+}
--- a/partitions.csv
+++ b/partitions.csv
@@ -3,4 +3,3 @@
 nvs,data,nvs,0x9000,24K,
 phy_init,data,phy,0xf000,4K,
 factory,app,factory,0x10000,2M,
-littlefs, data, littlefs,   ,1536K,
--- a/schematic.pdf
+++ b/schematic.pdf
--- a/sdkconfig.defaults
+++ b/sdkconfig.defaults
@@ -7,7 +7,11 @@ CONFIG_ESPTOOLPY_FLASHMODE_QIO=y
 CONFIG_ESPTOOLPY_FLASHSIZE_4MB=y
 CONFIG_PARTITION_TABLE_CUSTOM=y
 CONFIG_UART_ISR_IN_IRAM=y
+CONFIG_HTTPD_MAX_REQ_HDR_LEN=2048
+CONFIG_HTTPD_MAX_URI_LEN=1024
 CONFIG_HTTPD_WS_SUPPORT=y
+CONFIG_ESP_HTTPS_SERVER_ENABLE=y
+CONFIG_ESP_CONSOLE_USB_SERIAL_JTAG=y
 CONFIG_ESP_WIFI_STATIC_RX_BUFFER_NUM=20
 CONFIG_ESP_WIFI_DYNAMIC_RX_BUFFER_NUM=40
 CONFIG_ESP_WIFI_DYNAMIC_TX_BUFFER_NUM=40
Author	SHA1	Message	Date
YoungSoo Shin	cefe34c7bc	sta: fix reconnect ap when ap lost Signed-off-by: YoungSoo Shin <shinys000114@gmail.com>	2025-12-05 12:19:20 +09:00
YoungSoo Shin	388e75864a	update readme Signed-off-by: YoungSoo Shin <shinys000114@gmail.com>	2025-11-20 09:31:59 +09:00
YoungSoo Shin	b33db504a3	example: add .gitignore Signed-off-by: YoungSoo Shin <shinys000114@gmail.com>	2025-11-20 09:08:32 +09:00
YoungSoo Shin	0765c47e4a	example: add plot option Signed-off-by: YoungSoo Shin <shinys000114@gmail.com>	2025-11-20 09:07:34 +09:00
YoungSoo Shin	e7d97c1d6f	delete unuse partition Signed-off-by: YoungSoo Shin <shinys000114@gmail.com>	2025-11-20 08:57:14 +09:00
YoungSoo Shin	4bd060ff22	example: add support plot Signed-off-by: YoungSoo Shin <shinys000114@gmail.com>	2025-11-19 16:26:44 +09:00
YoungSoo Shin	4e6db88f7e	example: add support for csv Signed-off-by: YoungSoo Shin <shinys000114@gmail.com>	2025-11-19 16:26:40 +09:00
YoungSoo Shin	e3d98ed3dd	example: add example script Signed-off-by: YoungSoo Shin <shinys000114@gmail.com>	2025-11-19 16:26:33 +09:00
YoungSoo Shin	535bd9388e	delete unused functions Signed-off-by: YoungSoo Shin <shinys000114@gmail.com>	2025-11-19 12:59:16 +09:00
YoungSoo Shin	8bc08569fe	Add schematic	2025-11-03 15:06:43 +09:00
YoungSoo Shin	1f06c677c6	Delete docs, see https://wiki.odroid.com/accessory/powermate Signed-off-by: YoungSoo Shin <shinys000114@gmail.com>	2025-11-03 09:48:23 +09:00
YoungSoo Shin	16a87c0f40	Add LICENSE GPLv3 Signed-off-by: YoungSoo Shin <shinys000114@gmail.com>	2025-10-31 11:03:05 +09:00
YoungSoo Shin	69f7471953	Add debug console for Wi-Fi management and command-line interface integration Signed-off-by: YoungSoo Shin <shinys000114@gmail.com>	2025-10-17 10:34:54 +09:00
YoungSoo Shin	e1f232eace	Refactor WebSocket connection handlers: streamline logs and switch to warnings for closure events Signed-off-by: YoungSoo Shin <shinys000114@gmail.com>	2025-10-17 09:58:28 +09:00
YoungSoo Shin	274b70dbbe	Update header layout and footer version info placement Signed-off-by: YoungSoo Shin <shinys000114@gmail.com>	2025-10-02 17:27:58 +09:00
YoungSoo Shin	3e7d3cabfe	Remove debug logs from WebSocket ping/pong handlers Signed-off-by: YoungSoo Shin <shinys000114@gmail.com>	2025-09-26 12:49:01 +09:00
YoungSoo Shin	40fd0a667a	Add user settings feature to update username and password Signed-off-by: YoungSoo Shin <shinys000114@gmail.com>	2025-09-26 12:47:03 +09:00
YoungSoo Shin	89e17efcfc	Add websocket ping for detect connection lost for client Signed-off-by: YoungSoo Shin <shinys000114@gmail.com>	2025-09-26 12:25:41 +09:00
YoungSoo Shin	fb2ab88bc9	Add NVS key for username and password Signed-off-by: YoungSoo Shin <shinys000114@gmail.com>	2025-09-26 12:25:04 +09:00
YoungSoo Shin	e07aad2d7d	Refactor Signed-off-by: YoungSoo Shin <shinys000114@gmail.com>	2025-09-26 12:09:36 +09:00
YoungSoo Shin	358090db5d	Fix login page for mobile Signed-off-by: YoungSoo Shin <shinys000114@gmail.com>	2025-09-26 12:08:55 +09:00
YoungSoo Shin	bfc2b17ed4	Add token verify in websocket request Signed-off-by: YoungSoo Shin <shinys000114@gmail.com>	2025-09-26 12:08:55 +09:00
YoungSoo Shin	6be0512146	Add login function TODO ws request auth Signed-off-by: YoungSoo Shin <shinys000114@gmail.com>	2025-09-26 12:08:55 +09:00
YoungSoo Shin	6606be456b	Move system.c to service dir Signed-off-by: YoungSoo Shin <shinys000114@gmail.com>	2025-09-26 10:29:32 +09:00
YoungSoo Shin	7f6308bb6f	Delete logger, Add littlefs init function Signed-off-by: YoungSoo Shin <shinys000114@gmail.com>	2025-09-26 09:37:13 +09:00
YoungSoo Shin	23c72790ef	Update optimized response index Signed-off-by: YoungSoo Shin <shinys000114@gmail.com>	2025-09-24 15:10:28 +09:00