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New LCD library plus -v option for gpio binary

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This commit is contained in:
Gordon Drogon
2012-07-11 22:42:56 +01:00
committed by Philip Howard
parent d8e44ea3a6
commit 43aa862e97
6 changed files with 556 additions and 10 deletions
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17
gpio/gpio.c
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@@ -30,14 +30,17 @@
#include <unistd.h>
#include <errno.h>
#include <sys/types.h>
//#include <sys/stat.h>
#include <fcntl.h>
#define VERSION "1.0"
static int wpMode ;
char *usage = "Usage: gpio [-g] <read/write/pwm/mode/export/unexport/exports> ..." ;
char *usage = "Usage: gpio -v\n"
" gpio [-g] <read/write/pwm/mode/> ...\n"
" gpio <export/unexport/exports> ..." ;
/*
@@ -367,6 +370,14 @@ int main (int argc, char *argv [])
return 1 ;
}
if (strcasecmp (argv [1], "-v") == 0)
{
printf ("gpio version: %s\n", VERSION) ;
printf ("Copyright (c) 2012 Gordon Henderson\n") ;
printf ("This is free software with ABSOLUTELY NO WARRANTY.\n") ;
return 0 ;
}
// Initial test for /sys/class/gpio operations:
/**/ if (strcasecmp (argv [1], "exports" ) == 0)
@@ -411,7 +422,7 @@ int main (int argc, char *argv [])
doPwm (argc, argv) ;
else
{
fprintf (stderr, "%s: Unknown command: %s. (read/write/pwm/mode/export/unexport expected)\n", argv [0], argv [1]) ;
fprintf (stderr, "%s: Unknown command: %s. (read/write/pwm/mode expected)\n", argv [0], argv [1]) ;
exit (1) ;
}
return 0 ;