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Added new SPI driver helpers.

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Changed the gertboard code to use it
and ran more tests on he Gertboard code.
This commit is contained in:
Gordon Henderson
2012-08-27 20:56:14 +01:00
parent 4666573910
commit 99095e3fa0
7 changed files with 331 additions and 100 deletions
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94
gpio/gpio.c
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@@ -1,6 +1,7 @@
/*
* gpio.c:
* Set-UID command-line interface to the Raspberry Pi's GPIO
* Swiss-Army-Knife, Set-UID command-line interface to the Raspberry
* Pi's GPIO.
* Copyright (c) 2012 Gordon Henderson
***********************************************************************
* This file is part of wiringPi:
@@ -21,7 +22,6 @@
***********************************************************************
*/
#include <wiringPi.h>
#include <stdio.h>
#include <stdlib.h>
@@ -32,12 +32,15 @@
#include <sys/types.h>
#include <fcntl.h>
#include <wiringPi.h>
#include <gertboard.h>
#ifndef TRUE
# define TRUE (1==1)
# define FALSE (1==2)
#endif
#define VERSION "1.1"
#define VERSION "1.2"
static int wpMode ;
@@ -49,7 +52,9 @@ char *usage = "Usage: gpio -v\n"
" gpio drive <group> <value>\n"
" gpio pwm-bal/pwm-ms \n"
" gpio pwmr <range> \n"
" gpio load spi/i2c" ;
" gpio load spi/i2c\n"
" gpio gbr <channel>\n"
" gpio gbw <channel> <value>\n" ;
/*
@@ -518,6 +523,82 @@ static void doPadDrive (int argc, char *argv [])
}
/*
* doGbw:
* gpio gbw channel value
*********************************************************************************
*/
static void doGbw (int argc, char *argv [])
{
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
@@ -709,6 +790,11 @@ int main (int argc, char *argv [])
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
if (strcasecmp (argv [1], "-g") == 0)