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wiringPi Version 2 - First commit (of v2)

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This commit is contained in:
Gordon Henderson
2013-05-13 19:43:26 +01:00
parent 98bcb20d93
commit da38443cb2
97 changed files with 11243 additions and 1617 deletions
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384
gpio/gpio.c
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@@ -2,7 +2,7 @@
* gpio.c:
* Swiss-Army-Knife, Set-UID command-line interface to the Raspberry
* Pi's GPIO.
* Copyright (c) 2012 Gordon Henderson
* Copyright (c) 2012-2013 Gordon Henderson
***********************************************************************
* This file is part of wiringPi:
* https://projects.drogon.net/raspberry-pi/wiringpi/
@@ -26,14 +26,20 @@
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <ctype.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <sys/types.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <wiringPi.h>
#include <gertboard.h>
#include <piFace.h>
#include "extensions.h"
extern int wiringPiDebug ;
@@ -42,22 +48,26 @@ extern int wiringPiDebug ;
# define FALSE (1==2)
#endif
#define VERSION "1.12"
#define VERSION "2.02"
#define I2CDETECT "/usr/sbin/i2cdetect"
static int wpMode ;
char *usage = "Usage: gpio -v\n"
" gpio -h\n"
" gpio [-g] <read/write/wb/pwm/clock/mode> ...\n"
" gpio [-g|-1] [-x extension:params] ...\n"
" gpio [-p] <read/write/wb> ...\n"
" gpio readall\n"
" gpio unexportall/exports ...\n"
" gpio <read/write/aread/awritewb/pwm/clock/mode> ...\n"
" gpio readall/reset\n"
" gpio unexportall/exports\n"
" gpio export/edge/unexport ...\n"
" gpio wfi <pin> <mode>\n"
" gpio drive <group> <value>\n"
" gpio pwm-bal/pwm-ms \n"
" gpio pwmr <range> \n"
" gpio pwmc <divider> \n"
" gpio load spi/i2c\n"
" gpio i2cd/i2cdetect\n"
" gpio gbr <channel>\n"
" gpio gbw <channel> <value>" ; // No trailing newline needed here.
@@ -195,6 +205,37 @@ static void doLoad (int argc, char *argv [])
}
/*
* doI2Cdetect:
* Run the i2cdetect command with the right runes for this Pi revision
*********************************************************************************
*/
static void doI2Cdetect (int argc, char *argv [])
{
int port = piBoardRev () == 1 ? 0 : 1 ;
char command [128] ;
struct stat statBuf ;
if (stat (I2CDETECT, &statBuf) < 0)
{
fprintf (stderr, "%s: Unable to find i2cdetect command: %s\n", argv [0], strerror (errno)) ;
return ;
}
if (!moduleLoaded ("i2c_dev"))
{
fprintf (stderr, "%s: The I2C kernel module(s) are not loaded.\n", argv [0]) ;
return ;
}
sprintf (command, "%s -y %d", I2CDETECT, port) ;
if (system (command) < 0)
fprintf (stderr, "%s: Unable to run i2cdetect: %s\n", argv [0], strerror (errno)) ;
}
/*
* doReadall:
* Read all the GPIO pins
@@ -215,27 +256,39 @@ static char *alts [] =
"IN ", "OUT ", "ALT5", "ALT4", "ALT0", "ALT1", "ALT2", "ALT3"
} ;
static int wpiToPhys [64] =
{
11, 12, 13, 15, 16, 18, 22, 7, // 0...7
3, 5, // 8...9
24, 26, 19, 21, 23, // 10..14
8, 10, // 15..16
3, 4, 5, 6, // 17..20
0,0,0,0,0,0,0,0,0,0,0, // 20..31
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 32..47
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 47..63
} ;
static void doReadall (void)
{
int pin ;
printf ("+----------+------+--------+------+-------+\n") ;
printf ("| wiringPi | GPIO | Name | Mode | Value |\n") ;
printf ("+----------+------+--------+------+-------+\n") ;
printf ("+----------+-Rev%d-+------+--------+------+-------+\n", piBoardRev ()) ;
printf ("| wiringPi | GPIO | Phys | Name | Mode | Value |\n") ;
printf ("+----------+------+------+--------+------+-------+\n") ;
for (pin = 0 ; pin < 64 ; ++pin)
for (pin = 0 ; pin < 64 ; ++pin) // Crude, but effective
{
if (wpiPinToGpio (pin) == -1)
continue ;
printf ("| %6d | %3d | %s | %s | %s |\n",
pin, wpiPinToGpio (pin),
printf ("| %6d | %3d | %3d | %s | %s | %s |\n",
pin, wpiPinToGpio (pin), wpiToPhys [pin],
pinNames [pin],
alts [getAlt (pin)],
digitalRead (pin) == HIGH ? "High" : "Low ") ;
}
printf ("+----------+------+--------+------+-------+\n") ;
printf ("+----------+------+------+--------+------+-------+\n") ;
}
@@ -252,9 +305,7 @@ static void doExports (int argc, char *argv [])
char fName [128] ;
char buf [16] ;
// Rather crude, but who knows what others are up to...
for (first = 0, i = 0 ; i < 64 ; ++i)
for (first = 0, i = 0 ; i < 64 ; ++i) // Crude, but effective
{
// Try to read the direction
@@ -386,6 +437,52 @@ void doExport (int argc, char *argv [])
}
/*
* doWfi:
* gpio wfi pin mode
* Wait for Interrupt on a given pin.
* Slight cheat here - it's easier to actually use ISR now (which calls
* gpio to set the pin modes!) then we simply sleep, and expect the thread
* to exit the program. Crude but effective.
*********************************************************************************
*/
static void wfi (void)
{ exit (0) ; }
void doWfi (int argc, char *argv [])
{
int pin, mode ;
if (argc != 4)
{
fprintf (stderr, "Usage: %s wfi pin mode\n", argv [0]) ;
exit (1) ;
}
pin = atoi (argv [2]) ;
/**/ if (strcasecmp (argv [3], "rising") == 0) mode = INT_EDGE_RISING ;
else if (strcasecmp (argv [3], "falling") == 0) mode = INT_EDGE_FALLING ;
else if (strcasecmp (argv [3], "both") == 0) mode = INT_EDGE_BOTH ;
else
{
fprintf (stderr, "%s: wfi: Invalid mode: %s. Should be rising, falling or both\n", argv [1], argv [3]) ;
exit (1) ;
}
if (wiringPiISR (pin, mode, &wfi) < 0)
{
fprintf (stderr, "%s: wfi: Unable to setup ISR: %s\n", argv [1], strerror (errno)) ;
exit (1) ;
}
for (;;)
delay (9999) ;
}
/*
* doEdge:
* gpio edge pin mode
@@ -499,7 +596,7 @@ void doUnexport (int argc, char *argv [])
*********************************************************************************
*/
void doUnexportall (int argc, char *argv [])
void doUnexportall (char *progName)
{
FILE *fd ;
int pin ;
@@ -508,7 +605,7 @@ void doUnexportall (int argc, char *argv [])
{
if ((fd = fopen ("/sys/class/gpio/unexport", "w")) == NULL)
{
fprintf (stderr, "%s: Unable to open GPIO export interface\n", argv [0]) ;
fprintf (stderr, "%s: Unable to open GPIO export interface\n", progName) ;
exit (1) ;
}
fprintf (fd, "%d\n", pin) ;
@@ -517,6 +614,30 @@ void doUnexportall (int argc, char *argv [])
}
/*
* doReset:
* Reset the GPIO pins - as much as we can do
*********************************************************************************
*/
static void doReset (char *progName)
{
int pin ;
doUnexportall (progName) ;
for (pin = 0 ; pin < 64 ; ++pin)
{
if (wpiPinToGpio (pin) == -1)
continue ;
digitalWrite (pin, LOW) ;
pinMode (pin, INPUT) ;
pullUpDnControl (pin, PUD_OFF) ;
}
}
/*
* doMode:
* gpio mode pin mode ...
@@ -536,9 +657,6 @@ void doMode (int argc, char *argv [])
pin = atoi (argv [2]) ;
if ((wpMode == WPI_MODE_PINS) && ((pin < 0) || (pin >= NUM_PINS)))
return ;
mode = argv [3] ;
/**/ if (strcasecmp (mode, "in") == 0) pinMode (pin, INPUT) ;
@@ -604,7 +722,7 @@ static void doGbw (int argc, char *argv [])
if (argc != 4)
{
fprintf (stderr, "Usage: %s gbr <channel> <value>\n", argv [0]) ;
fprintf (stderr, "Usage: %s gbw <channel> <value>\n", argv [0]) ;
exit (1) ;
}
@@ -613,23 +731,23 @@ static void doGbw (int argc, char *argv [])
if ((channel < 0) || (channel > 1))
{
fprintf (stderr, "%s: channel must be 0 or 1\n", argv [0]) ;
fprintf (stderr, "%s: gbw: Channel number 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]) ;
fprintf (stderr, "%s: gbw: Value must be from 0 to 255\n", argv [0]) ;
exit (1) ;
}
if (gertboardSPISetup () == -1)
if (gertboardAnalogSetup (64) < 0)
{
fprintf (stderr, "Unable to initialise the Gertboard SPI interface: %s\n", strerror (errno)) ;
exit (1) ;
}
gertboardAnalogWrite (channel, value) ;
analogWrite (64 + channel, value) ;
}
@@ -654,21 +772,20 @@ static void doGbr (int argc, char *argv [])
if ((channel < 0) || (channel > 1))
{
fprintf (stderr, "%s: channel must be 0 or 1\n", argv [0]) ;
fprintf (stderr, "%s: gbr: Channel number must be 0 or 1\n", argv [0]) ;
exit (1) ;
}
if (gertboardSPISetup () == -1)
if (gertboardAnalogSetup (64) < 0)
{
fprintf (stderr, "Unable to initialise the Gertboard SPI interface: %s\n", strerror (errno)) ;
exit (1) ;
}
printf ("%d\n",gertboardAnalogRead (channel)) ;
printf ("%d\n", analogRead (64 + channel)) ;
}
/*
* doWrite:
* gpio write pin value
@@ -687,9 +804,6 @@ static void doWrite (int argc, char *argv [])
pin = atoi (argv [2]) ;
if ((wpMode == WPI_MODE_PINS) && ((pin < 0) || (pin >= NUM_PINS)))
return ;
/**/ if ((strcasecmp (argv [3], "up") == 0) || (strcasecmp (argv [3], "on") == 0))
val = 1 ;
else if ((strcasecmp (argv [3], "down") == 0) || (strcasecmp (argv [3], "off") == 0))
@@ -703,6 +817,31 @@ static void doWrite (int argc, char *argv [])
digitalWrite (pin, HIGH) ;
}
/*
* doAwriterite:
* gpio awrite pin value
*********************************************************************************
*/
static void doAwrite (int argc, char *argv [])
{
int pin, val ;
if (argc != 4)
{
fprintf (stderr, "Usage: %s awrite pin value\n", argv [0]) ;
exit (1) ;
}
pin = atoi (argv [2]) ;
val = atoi (argv [3]) ;
analogWrite (pin, val) ;
}
/*
* doWriteByte:
* gpio write value
@@ -742,19 +881,57 @@ void doRead (int argc, char *argv [])
}
pin = atoi (argv [2]) ;
if ((wpMode == WPI_MODE_PINS) && ((pin < 0) || (pin >= NUM_PINS)))
{
printf ("0\n") ;
return ;
}
val = digitalRead (pin) ;
printf ("%s\n", val == 0 ? "0" : "1") ;
}
/*
* doAread:
* Read an analog pin and return the value
*********************************************************************************
*/
void doAread (int argc, char *argv [])
{
int pin, val ;
if (argc != 3)
{
fprintf (stderr, "Usage: %s aread pin\n", argv [0]) ;
exit (1) ;
}
pin = atoi (argv [2]) ;
val = analogRead (pin) ;
printf ("%s\n", val == 0 ? "0" : "1") ;
}
/*
* doToggle:
* Toggle an IO pin
*********************************************************************************
*/
void doToggle (int argc, char *argv [])
{
int pin ;
if (argc != 3)
{
fprintf (stderr, "Usage: %s toggle pin\n", argv [0]) ;
exit (1) ;
}
pin = atoi (argv [2]) ;
digitalWrite (pin, !digitalRead (pin)) ;
}
/*
* doClock:
* Output a clock on a pin
@@ -773,9 +950,6 @@ void doClock (int argc, char *argv [])
pin = atoi (argv [2]) ;
if ((wpMode == WPI_MODE_PINS) && ((pin < 0) || (pin >= NUM_PINS)))
return ;
freq = atoi (argv [3]) ;
gpioClockSet (pin, freq) ;
@@ -800,9 +974,6 @@ void doPwm (int argc, char *argv [])
pin = atoi (argv [2]) ;
if ((wpMode == WPI_MODE_PINS) && ((pin < 0) || (pin >= NUM_PINS)))
return ;
val = atoi (argv [3]) ;
pwmWrite (pin, val) ;
@@ -885,16 +1056,34 @@ int main (int argc, char *argv [])
return 1 ;
}
// Help
if (strcasecmp (argv [1], "-h") == 0)
{
printf ("%s: %s\n", argv [0], usage) ;
return 0 ;
}
if (strcasecmp (argv [1], "-v") == 0)
// Sort of a special:
if (strcmp (argv [1], "-R") == 0)
{
printf ("%d\n", piBoardRev ()) ;
return 0 ;
}
// Version & Warranty
if (strcmp (argv [1], "-V") == 0)
{
printf ("%d\n", piBoardRev ()) ;
return 0 ;
}
if (strcmp (argv [1], "-v") == 0)
{
printf ("gpio version: %s\n", VERSION) ;
printf ("Copyright (c) 2012 Gordon Henderson\n") ;
printf ("Copyright (c) 2012-2013 Gordon Henderson\n") ;
printf ("This is free software with ABSOLUTELY NO WARRANTY.\n") ;
printf ("For details type: %s -warranty\n", argv [0]) ;
printf ("\n") ;
@@ -905,7 +1094,7 @@ int main (int argc, char *argv [])
if (strcasecmp (argv [1], "-warranty") == 0)
{
printf ("gpio version: %s\n", VERSION) ;
printf ("Copyright (c) 2012 Gordon Henderson\n") ;
printf ("Copyright (c) 2012-2013 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") ;
@@ -934,8 +1123,8 @@ int main (int argc, char *argv [])
/**/ 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 ; }
else if (strcasecmp (argv [1], "unexportall") == 0) { doUnexportall (argv [0]) ; return 0 ; }
// Check for load command:
@@ -948,13 +1137,9 @@ int main (int argc, char *argv [])
// Check for -g argument
if (strcasecmp (argv [1], "-g") == 0)
/**/ if (strcasecmp (argv [1], "-g") == 0)
{
if (wiringPiSetupGpio () == -1)
{
fprintf (stderr, "%s: Unable to initialise GPIO mode.\n", argv [0]) ;
exit (1) ;
}
wiringPiSetupGpio () ;
for (i = 2 ; i < argc ; ++i)
argv [i - 1] = argv [i] ;
@@ -962,15 +1147,23 @@ int main (int argc, char *argv [])
wpMode = WPI_MODE_GPIO ;
}
// Check for -1 argument
else if (strcasecmp (argv [1], "-1") == 0)
{
wiringPiSetupPhys () ;
for (i = 2 ; i < argc ; ++i)
argv [i - 1] = argv [i] ;
--argc ;
wpMode = WPI_MODE_PHYS ;
}
// Check for -p argument for PiFace
else if (strcasecmp (argv [1], "-p") == 0)
{
if (wiringPiSetupPiFaceForGpioProg () == -1)
{
fprintf (stderr, "%s: Unable to initialise PiFace.\n", argv [0]) ;
exit (1) ;
}
piFaceSetup (200) ;
for (i = 2 ; i < argc ; ++i)
argv [i - 1] = argv [i] ;
@@ -982,38 +1175,65 @@ int main (int argc, char *argv [])
else
{
if (wiringPiSetup () == -1)
{
fprintf (stderr, "%s: Unable to initialise wiringPi mode\n", argv [0]) ;
exit (1) ;
}
wiringPiSetup () ;
wpMode = WPI_MODE_PINS ;
}
// Check for PWM or Pad Drive operations
// Check for -x argument to load in a new extension
if (wpMode != WPI_MODE_PIFACE)
if (strcasecmp (argv [1], "-x") == 0)
{
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 ; }
if (strcasecmp (argv [1], "pwmc") == 0) { doPwmClock (argc, argv) ; return 0 ; }
if (strcasecmp (argv [1], "drive") == 0) { doPadDrive (argc, argv) ; return 0 ; }
if (argc < 3)
{
fprintf (stderr, "%s: -x missing extension specification.\n", argv [0]) ;
exit (EXIT_FAILURE) ;
}
if (!doExtension (argv [0], argv [2])) // Prints its own error messages
exit (EXIT_FAILURE) ;
for (i = 3 ; i < argc ; ++i)
argv [i - 2] = argv [i] ;
argc -= 2 ;
}
// Check for wiring commands
if (argc <= 1)
{
fprintf (stderr, "%s: no command given\n", argv [0]) ;
exit (EXIT_FAILURE) ;
}
/**/ if (strcasecmp (argv [1], "readall" ) == 0) doReadall () ;
else if (strcasecmp (argv [1], "read" ) == 0) doRead (argc, argv) ;
else if (strcasecmp (argv [1], "write") == 0) doWrite (argc, argv) ;
else if (strcasecmp (argv [1], "wb") == 0) doWriteByte (argc, argv) ;
else if (strcasecmp (argv [1], "pwm" ) == 0) doPwm (argc, argv) ;
else if (strcasecmp (argv [1], "clock") == 0) doClock (argc, argv) ;
else if (strcasecmp (argv [1], "mode" ) == 0) doMode (argc, argv) ;
// Core wiringPi functions
/**/ if (strcasecmp (argv [1], "mode" ) == 0) doMode (argc, argv) ;
else 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], "awrite" ) == 0) doAwrite (argc, argv) ;
else if (strcasecmp (argv [1], "aread" ) == 0) doAread (argc, argv) ;
// GPIO Nicies
else if (strcasecmp (argv [1], "toggle" ) == 0) doToggle (argc, argv) ;
// Pi Specifics
else if (strcasecmp (argv [1], "pwm-bal" ) == 0) doPwmMode (PWM_MODE_BAL) ;
else if (strcasecmp (argv [1], "pwm-ms" ) == 0) doPwmMode (PWM_MODE_MS) ;
else if (strcasecmp (argv [1], "pwmr" ) == 0) doPwmRange (argc, argv) ;
else if (strcasecmp (argv [1], "pwmc" ) == 0) doPwmClock (argc, argv) ;
else if (strcasecmp (argv [1], "drive" ) == 0) doPadDrive (argc, argv) ;
else if (strcasecmp (argv [1], "readall" ) == 0) doReadall () ;
else if (strcasecmp (argv [1], "i2cdetect") == 0) doI2Cdetect (argc, argv) ;
else if (strcasecmp (argv [1], "i2cd" ) == 0) doI2Cdetect (argc, argv) ;
else if (strcasecmp (argv [1], "reset" ) == 0) doReset (argv [0]) ;
else if (strcasecmp (argv [1], "wb" ) == 0) doWriteByte (argc, argv) ;
else if (strcasecmp (argv [1], "clock" ) == 0) doClock (argc, argv) ;
else if (strcasecmp (argv [1], "wfi" ) == 0) doWfi (argc, argv) ;
else
{
fprintf (stderr, "%s: Unknown command: %s.\n", argv [0], argv [1]) ;
exit (1) ;
exit (EXIT_FAILURE) ;
}
return 0 ;
}