wiringPi Version 2 - First commit (of v2)
This commit is contained in:
Gordon Henderson
91
gpio/gpio.1
91
gpio/gpio.1
@@ -1,15 +1,19 @@
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.TH "GPIO" "21st October 2012" "Command-Line access to Raspberry Pi and PiFace GPIO"
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.TH "GPIO" "March 2013" "Command-Line access to Raspberry Pi's GPIO"
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.SH NAME
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gpio \- Command-line access to Raspberry Pi and PiFace GPIO
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gpio \- Command-line access to Raspberry Pi's GPIO
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.SH SYNOPSIS
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.B gpio
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.B \-v
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.PP
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.B gpio
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.B [ \-g ]
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.B read/write/wb/pwm/clock/mode ...
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.B [ \-g | \-1 ]
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.B mode/read/write/aread/awrite/wb/pwm/clock ...
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.PP
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.B gpio
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.B [ \-x extension:params ]
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.B mode/read/write/aread/awrite/pwm ...
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.PP
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.B gpio
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.B [ \-p ]
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@@ -17,7 +21,7 @@ gpio \- Command-line access to Raspberry Pi and PiFace GPIO
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.B ...
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.PP
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.B gpio
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.B readall
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.B readall/reset
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.PP
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.B gpio
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.B unexportall/exports
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@@ -27,6 +31,10 @@ gpio \- Command-line access to Raspberry Pi and PiFace GPIO
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.B ...
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.PP
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.B gpio
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.B wfi
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.B ...
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.PP
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.B gpio
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.B drive
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group value
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.PP
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@@ -73,12 +81,28 @@ Output the current version including the board revision of the Raspberry Pi.
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.TP
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.B \-g
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Use the BCM_GPIO pins numbers rather than wiringPi pin numbers.
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\fINOTE:\fR The BCM_GPIO pin numbers are always used with the
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\fINote:\fR The BCM_GPIO pin numbers are always used with the
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export and edge commands.
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.TP
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.B \-1
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Use the physical pin numbers rather than wiringPi pin numbers.
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\fINote:\fR that this applies to the P1 connector only. It is not possible to
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use pins on the Revision 2 P5 connector this way, and as with \-g the
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BCM_GPIO pin numbers are always used with the export and edge commands.
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.TP
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.B \-x extension
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This causes the named extension to be initialised. Extensions
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comprise of a name (e.g. mcp23017) followed by a colon, then the
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pin-base, then more optional parameters depending on the extension type.
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See the web page on http://wiringpi.com/the-gpio-utility/
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.TP
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.B \-p
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Use the PiFace interface board and its corresponding pin numbers.
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Use the PiFace interface board and its corresponding pin numbers. The PiFace
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will always appear at pin number 200 in the gpio command. You can assign any
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pin numbers you like in your own programs though.
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.TP
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.B read <pin>
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@@ -102,6 +126,11 @@ Output a table of all GPIO pins values. The values represent the actual values r
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if the pin is in input mode, or the last value written if the pin is in output
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mode.
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.TP
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.B reset
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Resets the GPIO - As much as it's possible to do. All pins are set to input
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mode and all the internal pull-up/down resistors are disconnected (tristate mode).
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.TP
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.B pwm <pin> <value>
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Write a PWM value (0-1023) to the given pin. The pin needs to be put
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@@ -157,6 +186,12 @@ requiring root/sudo.
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.B unexport
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Un-Export a GPIO pin in the /sys/class/gpio directory.
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.TP
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.B wfi <pin> <mode>
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This set the given pin to the supplied interrupt mode: rising, falling
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or both then waits for the interrupt to happen. It's a non-busy wait,
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so does not consume and CPU while it's waiting.
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.TP
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.B drive
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group value
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@@ -207,26 +242,26 @@ The board jumpers need to be in-place to do this operation.
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.PP
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.TS
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r r r l.
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WiringPi GPIO-r1 GPIO-r2 Function
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c c c c l.
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WiringPi GPIO-r1 GPIO-r2 P1-Phys Function
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_
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0 17 17
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1 18 18 (PWM)
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2 21 27
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3 22 22
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4 23 23
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5 24 24
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6 25 25
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7 4 4
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8 0 2 I2C: SDA0
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9 1 3 I2C: SCL0
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10 8 8 SPI: CE0
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11 7 7 SPI: CE1
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12 10 10 SPI: MOSI
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13 9 9 SPI: MISO
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14 11 11 SPI: SCLK
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15 14 14 TxD
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16 15 16 RxD
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0 17 17 11
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1 18 18 12 (PWM)
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2 21 27 13
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3 22 22 15
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4 23 23 16
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5 24 24 18
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6 25 25 22
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7 4 4 7
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8 0 2 3 I2C: SDA0
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9 1 3 5 I2C: SCL0
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10 8 8 24 SPI: CE0
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11 7 7 26 SPI: CE1
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12 10 10 19 SPI: MOSI
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13 9 9 21 SPI: MISO
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14 11 11 23 SPI: SCLK
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15 14 14 8 TxD
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16 15 16 10 RxD
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17 - 28
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18 - 29
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19 - 30
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@@ -272,7 +307,7 @@ pin numbers.
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.LP
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WiringPi's home page
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.IP
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https://projects.drogon.net/raspberry-pi/wiringpi/
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http://wiringpi.com/
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.SH AUTHOR
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@@ -284,7 +319,7 @@ Please report bugs to <projects@drogon.net>
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.SH COPYRIGHT
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Copyright (c) 2012 Gordon Henderson
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Copyright (c) 2012-2013 Gordon Henderson
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This is free software; see the source for copying conditions. There is NO
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warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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