Merged from git.drogon.net, SPI driver helpers, C++ wrappers, softPwm, piNes, gertboard, SPI
This commit is contained in:
Gordon Henderson
committed by
Philip Howard
Philip Howard
parent
21f0472265
commit
ae40bdaf6a
@@ -41,7 +41,7 @@ OBJ = gpio.o
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all: gpio
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gpio: gpio.o
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gpio: gpio.o /usr/local/lib/libwiringPi.a
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@echo [LD]
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@$(CC) -o $@ gpio.o $(LDFLAGS) $(LIBS)
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102
gpio/gpio.1
102
gpio/gpio.1
@@ -4,28 +4,55 @@
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gpio \- Command-line access to Raspberry Pi and PiFace GPIO
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.SH SYNOPSIS
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.TP
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.B gpio
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.RB [ \-v ]
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.TP
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.B \-v
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.PP
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.B gpio
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.RB [ \-g ]
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.RB < read/write/pwm/mode ...>
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.TP
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.B [ \-g ]
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.B read/write/pwm/mode ...
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.PP
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.B gpio
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.RB [ \-p ]
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.RB < read/write/mode ...>
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.TP
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.B [ \-p ]
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.B read/write/mode
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.B ...
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.PP
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.B gpio
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.RB < export/edge/unexport/unexportall/exports ...>
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.B unexportall/exports
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.PP
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.B gpio
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.B export/edge/unexport
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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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.B gpio
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.B pwm-bal/pwm-ms
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.PP
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.B gpio
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.B pwmr
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range
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.PP
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.B gpio
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.B load \ i2c/spi
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.PP
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.B gpio
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.B gbr
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channel
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.PP
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.B gpio
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.B gbw
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channel value
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.SH DESCRIPTION
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.B GPIO
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is a command line tool to allow the user easy access to the GPIO pins
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on the Raspberry Pi. It's designed for simple testing and diagnostic
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purposes, but can be used in shell scripts for general if somewhat slow
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control of the GPIO pins.
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is a swiss army knofe of a command line tool to allow the user easy
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access to the GPIO pins on the Raspberry Pi and the SPI A/D and D/A
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convertors on the Gertboard. It's designed for simple testing and
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diagnostic purposes, but can be used in shell scripts for general if
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somewhat slow control of the GPIO pins.
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Additionally, it can be used to set the exports in the \fI/sys/class/gpio\fR
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system directory to allow subsequent programs to use the \fR/sys/class/gpio\fR
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@@ -64,6 +91,14 @@ Set a pin into \fIinput\fR, \fIoutput\fR or \fIpwm\fR mode. Can also
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use the literals \fIup\fR, \fIdown\fR or \fItri\fR to set the internal
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pull-up, pull-down or tristate (off) controls.
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.TP
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.B unexportall
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Un-Export all the GPIO pins in the /sys/class/gpio directory.
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.TP
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.B exports
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Print a list (if any) of all the exported GPIO pins and their current values.
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.TP
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.B export
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Export a GPIO pin in the \fI/sys/class/gpio\fR directory. Use like the
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@@ -96,12 +131,41 @@ requiring root/sudo.
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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 unexportall
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Un-Export all the GPIO pins in the /sys/class/gpio directory.
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.B drive
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group value
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Change the pad driver value for the given pad group to the supplied drive
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value. Group is 0, 1 or 2 and value is 0-7. Do not use unless you are
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absolutely sure you know what you're doing.
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.TP
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.B exports
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Print a list (if any) of all the exported GPIO pins and their current values.
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.B pwm-bal/pwm-ms
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Change the PWM mode to balanced (the default) or mark:space ratio (traditional)
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.TP
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.B pwmr
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Change the PWM range register. The default is 1024.
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.TP
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.B load i2c/spi
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This loads the i2c or the spi drivers into the system and changes the permissions on
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the associated /dev/ entries so that the current user has access to them.
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.TP
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.B gbr
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channel
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This reads the analog to digital convertor on the Gertboard on the given
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channel. The board jumpers need to be in-place to do this operation.
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.TP
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.B gbw
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channel value
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This writes the supplied value to the output channel on the Gertboards
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SPI digital to analogue convertor.
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The board jumpers need to be in-place to do this operation.
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.SH "WiringPi vs. GPIO Pin numbering"
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@@ -170,7 +234,7 @@ Gordon Henderson
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.SH "REPORTING BUGS"
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Report bugs to <gordon@drogon.net>
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Report bugs to <projects@drogon.net>
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.SH COPYRIGHT
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450
gpio/gpio.c
450
gpio/gpio.c
@@ -1,6 +1,7 @@
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/*
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* gpio.c:
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* Set-UID command-line interface to the Raspberry Pi's GPIO
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* Swiss-Army-Knife, Set-UID command-line interface to the Raspberry
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* Pi's GPIO.
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* Copyright (c) 2012 Gordon Henderson
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***********************************************************************
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* This file is part of wiringPi:
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@@ -21,7 +22,6 @@
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***********************************************************************
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*/
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#include <wiringPi.h>
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#include <stdio.h>
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#include <stdlib.h>
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@@ -32,15 +32,144 @@
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#include <sys/types.h>
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#include <fcntl.h>
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#include <wiringPi.h>
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#include <gertboard.h>
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#define VERSION "1.0"
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#ifndef TRUE
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# define TRUE (1==1)
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# define FALSE (1==2)
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#endif
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#define VERSION "1.2"
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static int wpMode ;
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char *usage = "Usage: gpio -v\n"
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" gpio -h\n"
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" gpio [-g] <read/write/pwm/mode> ...\n"
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" gpio [-p] <read/write/mode> ...\n"
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" gpio <export/edge/unexport/unexportall/exports> ..." ;
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" gpio export/edge/unexport/unexportall/exports ...\n"
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" gpio drive <group> <value>\n"
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" gpio pwm-bal/pwm-ms \n"
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" gpio pwmr <range> \n"
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" gpio load spi/i2c\n"
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" gpio gbr <channel>\n"
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" gpio gbw <channel> <value>\n" ;
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/*
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* changeOwner:
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* Change the ownership of the file to the real userId of the calling
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* program so we can access it.
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*********************************************************************************
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*/
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static void changeOwner (char *cmd, char *file)
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{
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uid_t uid = getuid () ;
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uid_t gid = getgid () ;
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if (chown (file, uid, gid) != 0)
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{
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if (errno == ENOENT) // Warn that it's not there
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fprintf (stderr, "%s: Warning: File not present: %s\n", cmd, file) ;
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else
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{
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fprintf (stderr, "%s: Unable to change ownership of %s: %s\n", cmd, file, strerror (errno)) ;
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exit (1) ;
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}
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}
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}
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/*
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* moduleLoaded:
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* Return true/false if the supplied module is loaded
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*********************************************************************************
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*/
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static int moduleLoaded (char *modName)
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{
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int len = strlen (modName) ;
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int found = FALSE ;
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FILE *fd = fopen ("/proc/modules", "r") ;
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char line [80] ;
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if (fd == NULL)
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{
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fprintf (stderr, "gpio: Unable to check modules: %s\n", strerror (errno)) ;
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exit (1) ;
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}
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while (fgets (line, 80, fd) != NULL)
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{
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if (strncmp (line, modName, len) != 0)
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continue ;
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found = TRUE ;
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break ;
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}
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fclose (fd) ;
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return found ;
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}
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/*
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* doLoad:
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* Load either the spi or i2c modules and change device ownerships, etc.
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*********************************************************************************
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*/
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static void _doLoadUsage (char *argv [])
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{
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fprintf (stderr, "Usage: %s load <spi/i2c>\n", argv [0]) ;
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exit (1) ;
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}
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static void doLoad (int argc, char *argv [])
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{
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char *module ;
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char cmd [80] ;
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char *file1, *file2 ;
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if (argc != 3)
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_doLoadUsage (argv) ;
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/**/ if (strcasecmp (argv [2], "spi") == 0)
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{
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module = "spi_bcm2708" ;
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file1 = "/dev/spidev0.0" ;
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file2 = "/dev/spidev0.1" ;
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}
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else if (strcasecmp (argv [2], "i2c") == 0)
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{
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module = "i2c_bcm2708" ;
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file1 = "/dev/i2c-0" ;
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file2 = "/dev/i2c-1" ;
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}
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else
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_doLoadUsage (argv) ;
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if (!moduleLoaded (module))
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{
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sprintf (cmd, "modprobe %s", module) ;
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system (cmd) ;
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}
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if (!moduleLoaded (module))
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{
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fprintf (stderr, "%s: Unable to load %s\n", argv [0], module) ;
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exit (1) ;
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}
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sleep (1) ; // To let things get settled
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changeOwner (argv [0], file1) ;
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changeOwner (argv [0], file2) ;
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}
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/*
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@@ -49,7 +178,7 @@ char *usage = "Usage: gpio -v\n"
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*********************************************************************************
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*/
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void doExports (void)
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static void doExports (int argc, char *argv [])
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{
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int fd ;
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int i, l, first ;
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@@ -140,8 +269,6 @@ void doExport (int argc, char *argv [])
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int pin ;
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char *mode ;
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char fName [128] ;
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uid_t uid ;
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gid_t gid ;
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if (argc != 4)
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{
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@@ -183,27 +310,11 @@ void doExport (int argc, char *argv [])
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// Change ownership so the current user can actually use it!
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uid = getuid () ;
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gid = getgid () ;
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sprintf (fName, "/sys/class/gpio/gpio%d/value", pin) ;
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if (chown (fName, uid, gid) != 0)
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{
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fprintf (stderr, "%s: Unable to change ownership of the value file: %s\n", argv [1], strerror (errno)) ;
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exit (1) ;
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}
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// Also change ownership of the edge file - if it exists
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changeOwner (argv [0], fName) ;
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sprintf (fName, "/sys/class/gpio/gpio%d/edge", pin) ;
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if (chown (fName, uid, gid) != 0)
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{
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if (errno != ENOENT) // Silently ignore File not found - older kernel
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{
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fprintf (stderr, "%s: Unable to change ownership of the value file: %s\n", argv [1], strerror (errno)) ;
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exit (1) ;
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}
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}
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changeOwner (argv [0], fName) ;
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}
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@@ -222,8 +333,6 @@ void doEdge (int argc, char *argv [])
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int pin ;
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char *mode ;
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char fName [128] ;
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uid_t uid ;
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gid_t gid ;
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if (argc != 4)
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{
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@@ -231,8 +340,7 @@ void doEdge (int argc, char *argv [])
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exit (1) ;
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}
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pin = atoi (argv [2]) ;
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pin = atoi (argv [2]) ;
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mode = argv [3] ;
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// Export the pin and set direction to input
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@@ -263,40 +371,23 @@ void doEdge (int argc, char *argv [])
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exit (1) ;
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}
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/**/ if (strcasecmp (mode, "none") == 0)
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fprintf (fd, "none\n") ;
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else if (strcasecmp (mode, "rising") == 0)
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fprintf (fd, "rising\n") ;
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else if (strcasecmp (mode, "falling") == 0)
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fprintf (fd, "falling\n") ;
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else if (strcasecmp (mode, "both") == 0)
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fprintf (fd, "both\n") ;
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/**/ if (strcasecmp (mode, "none") == 0) fprintf (fd, "none\n") ;
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else if (strcasecmp (mode, "rising") == 0) fprintf (fd, "rising\n") ;
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else if (strcasecmp (mode, "falling") == 0) fprintf (fd, "falling\n") ;
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else if (strcasecmp (mode, "both") == 0) fprintf (fd, "both\n") ;
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else
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{
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fprintf (stderr, "%s: Invalid mode: %s. Should be none, rising, falling or both\n", argv [1], mode) ;
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exit (1) ;
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}
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// Change ownership so the current user can actually use it!
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uid = getuid () ;
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gid = getgid () ;
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// Change ownership of the value and edge files, so the current user can actually use it!
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sprintf (fName, "/sys/class/gpio/gpio%d/value", pin) ;
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if (chown (fName, uid, gid) != 0)
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{
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fprintf (stderr, "%s: Unable to change ownership of the value file: %s\n", argv [1], strerror (errno)) ;
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exit (1) ;
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}
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// Also change ownership of the edge file
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changeOwner (argv [0], fName) ;
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sprintf (fName, "/sys/class/gpio/gpio%d/edge", pin) ;
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if (chown (fName, uid, gid) != 0)
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{
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fprintf (stderr, "%s: Unable to change ownership of the value file: %s\n", argv [1], strerror (errno)) ;
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exit (1) ;
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}
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changeOwner (argv [0], fName) ;
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fclose (fd) ;
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}
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@@ -383,18 +474,12 @@ void doMode (int argc, char *argv [])
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mode = argv [3] ;
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/**/ if (strcasecmp (mode, "in") == 0)
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pinMode (pin, INPUT) ;
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else if (strcasecmp (mode, "out") == 0)
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pinMode (pin, OUTPUT) ;
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else if (strcasecmp (mode, "pwm") == 0)
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pinMode (pin, PWM_OUTPUT) ;
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else if (strcasecmp (mode, "up") == 0)
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pullUpDnControl (pin, PUD_UP) ;
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else if (strcasecmp (mode, "down") == 0)
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pullUpDnControl (pin, PUD_DOWN) ;
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else if (strcasecmp (mode, "tri") == 0)
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pullUpDnControl (pin, PUD_OFF) ;
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/**/ if (strcasecmp (mode, "in") == 0) pinMode (pin, INPUT) ;
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else if (strcasecmp (mode, "out") == 0) pinMode (pin, OUTPUT) ;
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else if (strcasecmp (mode, "pwm") == 0) pinMode (pin, PWM_OUTPUT) ;
|
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else if (strcasecmp (mode, "up") == 0) pullUpDnControl (pin, PUD_UP) ;
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else if (strcasecmp (mode, "down") == 0) pullUpDnControl (pin, PUD_DOWN) ;
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else if (strcasecmp (mode, "tri") == 0) pullUpDnControl (pin, PUD_OFF) ;
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else
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{
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fprintf (stderr, "%s: Invalid mode: %s. Should be in/out/pwm/up/down/tri\n", argv [1], mode) ;
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@@ -402,13 +487,125 @@ void doMode (int argc, char *argv [])
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}
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}
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/*
|
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* doPadDrive:
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* gpio drive group value
|
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*********************************************************************************
|
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*/
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static void doPadDrive (int argc, char *argv [])
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{
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int group, val ;
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if (argc != 4)
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{
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fprintf (stderr, "Usage: %s drive group value\n", argv [0]) ;
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exit (1) ;
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}
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group = atoi (argv [2]) ;
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val = atoi (argv [3]) ;
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if ((group < 0) || (group > 2))
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{
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fprintf (stderr, "%s: drive group not 0, 1 or 2: %d\n", argv [0], group) ;
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exit (1) ;
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}
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if ((val < 0) || (val > 7))
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{
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fprintf (stderr, "%s: drive value not 0-7: %d\n", argv [0], val) ;
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exit (1) ;
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}
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setPadDrive (group, val) ;
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}
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|
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/*
|
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* doGbw:
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* gpio gbw channel value
|
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*********************************************************************************
|
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*/
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static void doGbw (int argc, char *argv [])
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{
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int channel, value ;
|
||||
|
||||
if (argc != 4)
|
||||
{
|
||||
fprintf (stderr, "Usage: %s gbr <channel> <value>\n", argv [0]) ;
|
||||
exit (1) ;
|
||||
}
|
||||
|
||||
channel = atoi (argv [2]) ;
|
||||
value = atoi (argv [3]) ;
|
||||
|
||||
if ((channel < 0) || (channel > 1))
|
||||
{
|
||||
fprintf (stderr, "%s: channel must be 0 or 1\n", argv [0]) ;
|
||||
exit (1) ;
|
||||
}
|
||||
|
||||
if ((value < 0) || (value > 1023))
|
||||
{
|
||||
fprintf (stderr, "%s: value must be from 0 to 255\n", argv [0]) ;
|
||||
exit (1) ;
|
||||
}
|
||||
|
||||
if (gertboardSPISetup () == -1)
|
||||
{
|
||||
fprintf (stderr, "Unable to initialise the Gertboard SPI interface: %s\n", strerror (errno)) ;
|
||||
exit (1) ;
|
||||
}
|
||||
|
||||
gertboardAnalogWrite (channel, value) ;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* doGbr:
|
||||
* gpio gbr channel
|
||||
*********************************************************************************
|
||||
*/
|
||||
|
||||
static void doGbr (int argc, char *argv [])
|
||||
{
|
||||
int channel ;
|
||||
|
||||
if (argc != 3)
|
||||
{
|
||||
fprintf (stderr, "Usage: %s gbr <channel>\n", argv [0]) ;
|
||||
exit (1) ;
|
||||
}
|
||||
|
||||
channel = atoi (argv [2]) ;
|
||||
|
||||
if ((channel < 0) || (channel > 1))
|
||||
{
|
||||
fprintf (stderr, "%s: channel must be 0 or 1\n", argv [0]) ;
|
||||
exit (1) ;
|
||||
}
|
||||
|
||||
if (gertboardSPISetup () == -1)
|
||||
{
|
||||
fprintf (stderr, "Unable to initialise the Gertboard SPI interface: %s\n", strerror (errno)) ;
|
||||
exit (1) ;
|
||||
}
|
||||
|
||||
printf ("%d\n",gertboardAnalogRead (channel)) ;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/*
|
||||
* doWrite:
|
||||
* gpio write pin value
|
||||
*********************************************************************************
|
||||
*/
|
||||
|
||||
void doWrite (int argc, char *argv [])
|
||||
static void doWrite (int argc, char *argv [])
|
||||
{
|
||||
int pin, val ;
|
||||
|
||||
@@ -489,6 +686,39 @@ void doPwm (int argc, char *argv [])
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* doPwmMode: doPwmRange:
|
||||
* Change the PWM mode and Range values
|
||||
*********************************************************************************
|
||||
*/
|
||||
|
||||
static void doPwmMode (int mode)
|
||||
{
|
||||
pwmSetMode (mode) ;
|
||||
}
|
||||
|
||||
static void doPwmRange (int argc, char *argv [])
|
||||
{
|
||||
unsigned int range ;
|
||||
|
||||
if (argc != 3)
|
||||
{
|
||||
fprintf (stderr, "Usage: %s pwmr <range>\n", argv [0]) ;
|
||||
exit (1) ;
|
||||
}
|
||||
|
||||
range = (unsigned int)strtoul (argv [2], NULL, 10) ;
|
||||
|
||||
if (range == 0)
|
||||
{
|
||||
fprintf (stderr, "%s: range must be > 0\n", argv [0]) ;
|
||||
exit (1) ;
|
||||
}
|
||||
|
||||
pwmSetRange (range) ;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* main:
|
||||
* Start here
|
||||
@@ -505,10 +735,10 @@ int main (int argc, char *argv [])
|
||||
return 1 ;
|
||||
}
|
||||
|
||||
if (geteuid () != 0)
|
||||
if (strcasecmp (argv [1], "-h") == 0)
|
||||
{
|
||||
fprintf (stderr, "%s: Must be root to run\n", argv [0]) ;
|
||||
return 1 ;
|
||||
printf ("%s: %s\n", argv [0], usage) ;
|
||||
return 0 ;
|
||||
}
|
||||
|
||||
if (strcasecmp (argv [1], "-v") == 0)
|
||||
@@ -516,21 +746,54 @@ int main (int argc, char *argv [])
|
||||
printf ("gpio version: %s\n", VERSION) ;
|
||||
printf ("Copyright (c) 2012 Gordon Henderson\n") ;
|
||||
printf ("This is free software with ABSOLUTELY NO WARRANTY.\n") ;
|
||||
printf ("For details type: %s -warranty\n", argv [0]) ;
|
||||
return 0 ;
|
||||
}
|
||||
|
||||
if (strcasecmp (argv [1], "-warranty") == 0)
|
||||
{
|
||||
printf ("gpio version: %s\n", VERSION) ;
|
||||
printf ("Copyright (c) 2012 Gordon Henderson\n") ;
|
||||
printf ("\n") ;
|
||||
printf (" This program is free software; you can redistribute it and/or modify\n") ;
|
||||
printf (" it under the terms of the GNU Leser General Public License as published\n") ;
|
||||
printf (" by the Free Software Foundation, either version 3 of the License, or\n") ;
|
||||
printf (" (at your option) any later version.\n") ;
|
||||
printf ("\n") ;
|
||||
printf (" This program is distributed in the hope that it will be useful,\n") ;
|
||||
printf (" but WITHOUT ANY WARRANTY; without even the implied warranty of\n") ;
|
||||
printf (" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n") ;
|
||||
printf (" GNU Lesser General Public License for more details.\n") ;
|
||||
printf ("\n") ;
|
||||
printf (" You should have received a copy of the GNU Lesser General Public License\n") ;
|
||||
printf (" along with this program. If not, see <http://www.gnu.org/licenses/>.\n") ;
|
||||
printf ("\n") ;
|
||||
return 0 ;
|
||||
}
|
||||
|
||||
if (geteuid () != 0)
|
||||
{
|
||||
fprintf (stderr, "%s: Must be root to run. Program should be suid root. This is an error.\n", argv [0]) ;
|
||||
return 1 ;
|
||||
}
|
||||
|
||||
// Initial test for /sys/class/gpio operations:
|
||||
|
||||
/**/ if (strcasecmp (argv [1], "exports" ) == 0)
|
||||
{ doExports () ; return 0 ; }
|
||||
else if (strcasecmp (argv [1], "export" ) == 0)
|
||||
{ doExport (argc, argv) ; return 0 ; }
|
||||
else if (strcasecmp (argv [1], "edge" ) == 0)
|
||||
{ doEdge (argc, argv) ; return 0 ; }
|
||||
else if (strcasecmp (argv [1], "unexportall") == 0)
|
||||
{ doUnexportall (argc, argv) ; return 0 ; }
|
||||
else if (strcasecmp (argv [1], "unexport") == 0)
|
||||
{ doUnexport (argc, argv) ; return 0 ; }
|
||||
/**/ if (strcasecmp (argv [1], "exports" ) == 0) { doExports (argc, argv) ; return 0 ; }
|
||||
else if (strcasecmp (argv [1], "export" ) == 0) { doExport (argc, argv) ; return 0 ; }
|
||||
else if (strcasecmp (argv [1], "edge" ) == 0) { doEdge (argc, argv) ; return 0 ; }
|
||||
else if (strcasecmp (argv [1], "unexportall") == 0) { doUnexportall (argc, argv) ; return 0 ; }
|
||||
else if (strcasecmp (argv [1], "unexport" ) == 0) { doUnexport (argc, argv) ; return 0 ; }
|
||||
|
||||
// Check for drive or load commands:
|
||||
|
||||
if (strcasecmp (argv [1], "drive") == 0) { doPadDrive (argc, argv) ; return 0 ; }
|
||||
if (strcasecmp (argv [1], "load" ) == 0) { doLoad (argc, argv) ; return 0 ; }
|
||||
|
||||
// Gertboard commands
|
||||
|
||||
if (strcasecmp (argv [1], "gbr" ) == 0) { doGbr (argc, argv) ; return 0 ; }
|
||||
if (strcasecmp (argv [1], "gbw" ) == 0) { doGbw (argc, argv) ; return 0 ; }
|
||||
|
||||
// Check for -g argument
|
||||
|
||||
@@ -538,7 +801,7 @@ int main (int argc, char *argv [])
|
||||
{
|
||||
if (wiringPiSetupGpio () == -1)
|
||||
{
|
||||
fprintf (stderr, "%s: Unable to initialise GPIO in GPIO mode.\n", argv [0]) ;
|
||||
fprintf (stderr, "%s: Unable to initialise GPIO mode.\n", argv [0]) ;
|
||||
exit (1) ;
|
||||
}
|
||||
|
||||
@@ -570,23 +833,30 @@ int main (int argc, char *argv [])
|
||||
{
|
||||
if (wiringPiSetup () == -1)
|
||||
{
|
||||
fprintf (stderr, "%s: Unable to initialise GPIO in wiringPi mode\n", argv [0]) ;
|
||||
fprintf (stderr, "%s: Unable to initialise wiringPi mode\n", argv [0]) ;
|
||||
exit (1) ;
|
||||
}
|
||||
wpMode = WPI_MODE_PINS ;
|
||||
}
|
||||
|
||||
/**/ if (strcasecmp (argv [1], "write" ) == 0)
|
||||
doWrite (argc, argv) ;
|
||||
else if (strcasecmp (argv [1], "read" ) == 0)
|
||||
doRead (argc, argv) ;
|
||||
else if (strcasecmp (argv [1], "mode" ) == 0)
|
||||
doMode (argc, argv) ;
|
||||
else if (strcasecmp (argv [1], "pwm" ) == 0)
|
||||
doPwm (argc, argv) ;
|
||||
// Check for PWM operations
|
||||
|
||||
if (wpMode != WPI_MODE_PIFACE)
|
||||
{
|
||||
if (strcasecmp (argv [1], "pwm-bal") == 0) { doPwmMode (PWM_MODE_BAL) ; return 0 ; }
|
||||
if (strcasecmp (argv [1], "pwm-ms") == 0) { doPwmMode (PWM_MODE_MS) ; return 0 ; }
|
||||
if (strcasecmp (argv [1], "pwmr") == 0) { doPwmRange (argc, argv) ; return 0 ; }
|
||||
}
|
||||
|
||||
// Check for wiring commands
|
||||
|
||||
/**/ if (strcasecmp (argv [1], "read" ) == 0) doRead (argc, argv) ;
|
||||
else if (strcasecmp (argv [1], "write") == 0) doWrite (argc, argv) ;
|
||||
else if (strcasecmp (argv [1], "pwm" ) == 0) doPwm (argc, argv) ;
|
||||
else if (strcasecmp (argv [1], "mode" ) == 0) doMode (argc, argv) ;
|
||||
else
|
||||
{
|
||||
fprintf (stderr, "%s: Unknown command: %s. (read/write/pwm/mode expected)\n", argv [0], argv [1]) ;
|
||||
fprintf (stderr, "%s: Unknown command: %s.\n", argv [0], argv [1]) ;
|
||||
exit (1) ;
|
||||
}
|
||||
return 0 ;
|
||||
|
||||
Reference in New Issue
Block a user