* gpio.c:
* Swiss-Army-Knife, Set-UID command-line interface to the Raspberry
* Pi's GPIO.
- * Copyright (c) 2012-2013 Gordon Henderson
+ * Copyright (c) 2012-2015 Gordon Henderson
***********************************************************************
* This file is part of wiringPi:
* https://projects.drogon.net/raspberry-pi/wiringpi/
#include <sys/stat.h>
#include <wiringPi.h>
+#include <wpiExtensions.h>
#include <gertboard.h>
#include <piFace.h>
-#include "extensions.h"
+#include "version.h"
extern int wiringPiDebug ;
+// External functions I can't be bothered creating a separate .h file for:
+
+extern void doReadall (void) ;
+extern void doPins (void) ;
+
#ifndef TRUE
# define TRUE (1==1)
# define FALSE (1==2)
#endif
-#define VERSION "2.07"
-#define I2CDETECT "/usr/sbin/i2cdetect"
+#define PI_USB_POWER_CONTROL 38
+#define I2CDETECT "/usr/sbin/i2cdetect"
-static int wpMode ;
+int wpMode ;
char *usage = "Usage: gpio -v\n"
" gpio -h\n"
" gpio pwmr <range> \n"
" gpio pwmc <divider> \n"
" gpio load spi/i2c\n"
+ " gpio unload spi/i2c\n"
" gpio i2cd/i2cdetect\n"
+ " gpio usbp high/low\n"
" gpio gbr <channel>\n"
" gpio gbw <channel> <value>" ; // No trailing newline needed here.
+#ifdef NOT_FOR_NOW
+/*
+ * decodePin:
+ * Decode a pin "number" which can actually be a pin name to represent
+ * one of the Pi's on-board pins.
+ *********************************************************************************
+ */
+
+static int decodePin (const char *str)
+{
+
+// The first case - see if it's a number:
+
+ if (isdigit (str [0]))
+ return atoi (str) ;
+
+ return 0 ;
+}
+#endif
+
+
/*
* changeOwner:
* Change the ownership of the file to the real userId of the calling
if (chown (file, uid, gid) != 0)
{
if (errno == ENOENT) // Warn that it's not there
- fprintf (stderr, "%s: Warning: File not present: %s\n", cmd, file) ;
+ fprintf (stderr, "%s: Warning (not an error): File not present: %s\n", cmd, file) ;
else
- {
- fprintf (stderr, "%s: Unable to change ownership of %s: %s\n", cmd, file, strerror (errno)) ;
- exit (1) ;
- }
+ fprintf (stderr, "%s: Warning (not an error): Unable to change ownership of %s: %s\n", cmd, file, strerror (errno)) ;
}
}
static void _doLoadUsage (char *argv [])
{
- fprintf (stderr, "Usage: %s load <spi/i2c> [SPI bufferSize in KB | I2C baudrate in Kb/sec]\n", argv [0]) ;
+ fprintf (stderr, "Usage: %s load <spi/i2c> [I2C baudrate in Kb/sec]\n", argv [0]) ;
exit (1) ;
}
file1 = "/dev/spidev0.0" ;
file2 = "/dev/spidev0.1" ;
if (argc == 4)
- sprintf (args1, " bufsiz=%d", atoi (argv [3]) * 1024) ;
+ {
+ fprintf (stderr, "%s: Unable to set the buffer size now. Load aborted. Please see the man page.\n", argv [0]) ;
+ exit (1) ;
+ }
else if (argc > 4)
_doLoadUsage (argv) ;
}
if (!moduleLoaded (module1))
{
- sprintf (cmd, "modprobe %s%s", module1, args1) ;
+ sprintf (cmd, "/sbin/modprobe %s%s", module1, args1) ;
system (cmd) ;
}
if (!moduleLoaded (module2))
{
- sprintf (cmd, "modprobe %s%s", module2, args2) ;
+ sprintf (cmd, "/sbin/modprobe %s%s", module2, args2) ;
system (cmd) ;
}
}
+/*
+ * doUnLoad:
+ * Un-Load either the spi or i2c modules and change device ownerships, etc.
+ *********************************************************************************
+ */
+
+static void _doUnLoadUsage (char *argv [])
+{
+ fprintf (stderr, "Usage: %s unload <spi/i2c>\n", argv [0]) ;
+ exit (1) ;
+}
+
+static void doUnLoad (int argc, char *argv [])
+{
+ char *module1, *module2 ;
+ char cmd [80] ;
+
+ if (argc != 3)
+ _doUnLoadUsage (argv) ;
+
+ /**/ if (strcasecmp (argv [2], "spi") == 0)
+ {
+ module1 = "spidev" ;
+ module2 = "spi_bcm2708" ;
+ }
+ else if (strcasecmp (argv [2], "i2c") == 0)
+ {
+ module1 = "i2c_dev" ;
+ module2 = "i2c_bcm2708" ;
+ }
+ else
+ _doUnLoadUsage (argv) ;
+
+ if (moduleLoaded (module1))
+ {
+ sprintf (cmd, "/sbin/rmmod %s", module1) ;
+ system (cmd) ;
+ }
+
+ if (moduleLoaded (module2))
+ {
+ sprintf (cmd, "/sbin/rmmod %s", module2) ;
+ system (cmd) ;
+ }
+}
+
+
/*
* doI2Cdetect:
* Run the i2cdetect command with the right runes for this Pi revision
}
-/*
- * doReadall:
- * Read all the GPIO pins
- * We also want to use this to read the state of pins on an externally
- * connected device, so we need to do some fiddling with the internal
- * wiringPi node structures - since the gpio command can only use
- * one external device at a time, we'll use that to our advantage...
- *********************************************************************************
- */
-
-static char *pinNames [] =
-{
- "GPIO 0", "GPIO 1", "GPIO 2", "GPIO 3", "GPIO 4", "GPIO 5", "GPIO 6", "GPIO 7",
- "SDA ", "SCL ",
- "CE0 ", "CE1 ", "MOSI ", "MISO ", "SCLK ",
- "TxD ", "RxD ",
- "GPIO 8", "GPIO 9", "GPIO10", "GPIO11",
-} ;
-
-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
-} ;
-
-
-/*
- * doReadallExternal:
- * A relatively crude way to read the pins on an external device.
- * We don't know the input/output mode of pins, but we can tell
- * if it's an analog pin or a digital one...
- *********************************************************************************
- */
-
-static void doReadallExternal (void)
-{
- int pin ;
-
- printf ("+------+---------+--------+\n") ;
- printf ("| Pin | Digital | Analog |\n") ;
- printf ("+------+---------+--------+\n") ;
-
- for (pin = wiringPiNodes->pinBase ; pin <= wiringPiNodes->pinMax ; ++pin)
- printf ("| %4d | %4d | %4d |\n", pin, digitalRead (pin), analogRead (pin)) ;
-
- printf ("+------+---------+--------+\n") ;
-}
-
-
-static void doReadall (void)
-{
- int pin ;
-
- if (wiringPiNodes != NULL) // External readall
- doReadallExternal () ;
- else
- {
- printf ("+----------+-Rev%d-+------+--------+------+-------+\n", piBoardRev ()) ;
- printf ("| wiringPi | GPIO | Phys | Name | Mode | Value |\n") ;
- printf ("+----------+------+------+--------+------+-------+\n") ;
-
- for (pin = 0 ; pin < 64 ; ++pin) // Crude, but effective
- {
- if (wpiPinToGpio (pin) == -1)
- continue ;
-
- 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") ;
- }
-}
-
-
/*
* doExports:
* List all GPIO exports
exit (1) ;
}
- /**/ if ((strcasecmp (mode, "in") == 0) || (strcasecmp (mode, "input") == 0))
+ /**/ if ((strcasecmp (mode, "in") == 0) || (strcasecmp (mode, "input") == 0))
fprintf (fd, "in\n") ;
- else if ((strcasecmp (mode, "out") == 0) || (strcasecmp (mode, "output") == 0))
+ else if ((strcasecmp (mode, "out") == 0) || (strcasecmp (mode, "output") == 0))
fprintf (fd, "out\n") ;
+ else if ((strcasecmp (mode, "high") == 0) || (strcasecmp (mode, "up") == 0))
+ fprintf (fd, "high\n") ;
+ else if ((strcasecmp (mode, "low") == 0) || (strcasecmp (mode, "down") == 0))
+ fprintf (fd, "low\n") ;
else
{
- fprintf (stderr, "%s: Invalid mode: %s. Should be in or out\n", argv [1], mode) ;
+ fprintf (stderr, "%s: Invalid mode: %s. Should be in, out, high or low\n", argv [1], mode) ;
exit (1) ;
}
fclose (fd) ;
-// Change ownership so the current user can actually use it!
+// Change ownership so the current user can actually use it
sprintf (fName, "/sys/class/gpio/gpio%d/value", pin) ;
changeOwner (argv [0], fName) ;
}
-/*
- * doResetExternal:
- * Load readallExternal, we try to do this with an external device.
- *********************************************************************************
- */
-
-static void doResetExternal (void)
-{
- int pin ;
-
- for (pin = wiringPiNodes->pinBase ; pin <= wiringPiNodes->pinMax ; ++pin)
- {
- pinMode (pin, INPUT) ;
- pullUpDnControl (pin, PUD_OFF) ;
- }
-}
-
-
/*
* doReset:
* Reset the GPIO pins - as much as we can do
static void doReset (char *progName)
{
- int pin ;
-
- if (wiringPiNodes != NULL) // External reset
- doResetExternal () ;
- else
- {
- doUnexportall (progName) ;
-
- for (pin = 0 ; pin < 64 ; ++pin)
- {
- if (wpiPinToGpio (pin) == -1)
- continue ;
-
- digitalWrite (pin, LOW) ;
- pinMode (pin, INPUT) ;
- pullUpDnControl (pin, PUD_OFF) ;
- }
- }
+ printf ("GPIO Reset is dangerous and has been removed from the gpio command.\n") ;
+ printf (" - Please write a shell-script to reset the GPIO pins into the state\n") ;
+ printf (" that you need them in for your applications.\n") ;
}
mode = argv [3] ;
- /**/ if (strcasecmp (mode, "in") == 0) pinMode (pin, INPUT) ;
- else if (strcasecmp (mode, "out") == 0) pinMode (pin, OUTPUT) ;
- else if (strcasecmp (mode, "pwm") == 0) pinMode (pin, PWM_OUTPUT) ;
- else if (strcasecmp (mode, "clock") == 0) pinMode (pin, GPIO_CLOCK) ;
- else if (strcasecmp (mode, "up") == 0) pullUpDnControl (pin, PUD_UP) ;
- else if (strcasecmp (mode, "down") == 0) pullUpDnControl (pin, PUD_DOWN) ;
- else if (strcasecmp (mode, "tri") == 0) pullUpDnControl (pin, PUD_OFF) ;
+ /**/ if (strcasecmp (mode, "in") == 0) pinMode (pin, INPUT) ;
+ else if (strcasecmp (mode, "input") == 0) pinMode (pin, INPUT) ;
+ else if (strcasecmp (mode, "out") == 0) pinMode (pin, OUTPUT) ;
+ else if (strcasecmp (mode, "output") == 0) pinMode (pin, OUTPUT) ;
+ else if (strcasecmp (mode, "pwm") == 0) pinMode (pin, PWM_OUTPUT) ;
+ else if (strcasecmp (mode, "pwmTone") == 0) pinMode (pin, PWM_TONE_OUTPUT) ;
+ else if (strcasecmp (mode, "clock") == 0) pinMode (pin, GPIO_CLOCK) ;
+ else if (strcasecmp (mode, "up") == 0) pullUpDnControl (pin, PUD_UP) ;
+ else if (strcasecmp (mode, "down") == 0) pullUpDnControl (pin, PUD_DOWN) ;
+ else if (strcasecmp (mode, "tri") == 0) pullUpDnControl (pin, PUD_OFF) ;
+ else if (strcasecmp (mode, "off") == 0) pullUpDnControl (pin, PUD_OFF) ;
+ else if (strcasecmp (mode, "alt0") == 0) pinModeAlt (pin, 0b100) ;
+ else if (strcasecmp (mode, "alt1") == 0) pinModeAlt (pin, 0b101) ;
+ else if (strcasecmp (mode, "alt2") == 0) pinModeAlt (pin, 0b110) ;
+ else if (strcasecmp (mode, "alt3") == 0) pinModeAlt (pin, 0b111) ;
+ else if (strcasecmp (mode, "alt4") == 0) pinModeAlt (pin, 0b011) ;
+ else if (strcasecmp (mode, "alt5") == 0) pinModeAlt (pin, 0b010) ;
else
{
fprintf (stderr, "%s: Invalid mode: %s. Should be in/out/pwm/clock/up/down/tri\n", argv [1], mode) ;
}
+/*
+ * doUsbP:
+ * Control USB Power - High (1.2A) or Low (600mA)
+ * gpio usbp high/low
+ *********************************************************************************
+ */
+
+static void doUsbP (int argc, char *argv [])
+{
+ int model, rev, mem, maker, overVolted ;
+
+ if (argc != 3)
+ {
+ fprintf (stderr, "Usage: %s usbp high|low\n", argv [0]) ;
+ exit (1) ;
+ }
+
+// Make sure we're on a B+
+
+ piBoardId (&model, &rev, &mem, &maker, &overVolted) ;
+
+ if (model != PI_MODEL_BP)
+ {
+ fprintf (stderr, "USB power contol is applicable to B+ boards only.\n") ;
+ exit (1) ;
+ }
+
+// Need to force BCM_GPIO mode:
+
+ wiringPiSetupGpio () ;
+
+ if ((strcasecmp (argv [2], "high") == 0) || (strcasecmp (argv [2], "hi") == 0))
+ {
+ digitalWrite (PI_USB_POWER_CONTROL, 1) ;
+ pinMode (PI_USB_POWER_CONTROL, OUTPUT) ;
+ printf ("Switched to HIGH current USB (1.2A)\n") ;
+ return ;
+ }
+
+ if ((strcasecmp (argv [2], "low") == 0) || (strcasecmp (argv [2], "lo") == 0))
+ {
+ digitalWrite (PI_USB_POWER_CONTROL, 0) ;
+ pinMode (PI_USB_POWER_CONTROL, OUTPUT) ;
+ printf ("Switched to LOW current USB (600mA)\n") ;
+ return ;
+ }
+
+ fprintf (stderr, "Usage: %s usbp high|low\n", argv [0]) ;
+ exit (1) ;
+}
+
+
/*
* doGbw:
* gpio gbw channel value
exit (1) ;
}
- if ((value < 0) || (value > 1023))
+ if ((value < 0) || (value > 255))
{
fprintf (stderr, "%s: gbw: Value must be from 0 to 255\n", argv [0]) ;
exit (1) ;
digitalWrite (pin, !digitalRead (pin)) ;
}
+
+/*
+ * doPwmTone:
+ * Output a tone in a PWM pin
+ *********************************************************************************
+ */
+
+void doPwmTone (int argc, char *argv [])
+{
+ int pin, freq ;
+
+ if (argc != 4)
+ {
+ fprintf (stderr, "Usage: %s pwmTone <pin> <freq>\n", argv [0]) ;
+ exit (1) ;
+ }
+
+ pin = atoi (argv [2]) ;
+ freq = atoi (argv [3]) ;
+
+ pwmToneWrite (pin, freq) ;
+}
+
+
/*
* doClock:
* Output a clock on a pin
int main (int argc, char *argv [])
{
int i ;
+ int model, rev, mem, maker, overVolted ;
if (getenv ("WIRINGPI_DEBUG") != NULL)
{
if (strcmp (argv [1], "-v") == 0)
{
printf ("gpio version: %s\n", VERSION) ;
- printf ("Copyright (c) 2012-2013 Gordon Henderson\n") ;
+ printf ("Copyright (c) 2012-2015 Gordon Henderson\n") ;
printf ("This is free software with ABSOLUTELY NO WARRANTY.\n") ;
printf ("For details type: %s -warranty\n", argv [0]) ;
printf ("\n") ;
- printf ("This Raspberry Pi is a revision %d board.\n", piBoardRev ()) ;
+ piBoardId (&model, &rev, &mem, &maker, &overVolted) ;
+ if (model == PI_MODEL_UNKNOWN)
+ {
+ printf ("Your Raspberry Pi has an unknown model type. Please report this to\n") ;
+ printf (" projects@drogon.net\n") ;
+ printf ("with a copy of your /proc/cpuinfo if possible\n") ;
+ }
+ else
+ {
+ printf ("Raspberry Pi Details:\n") ;
+ printf (" Type: %s, Revision: %s, Memory: %dMB, Maker: %s %s\n",
+ piModelNames [model], piRevisionNames [rev], mem, piMakerNames [maker], overVolted ? "[OV]" : "") ;
+
+// Quick check for /dev/gpiomem
+
+ if ((i = open ("/dev/gpiomem", O_RDWR | O_SYNC | O_CLOEXEC) ) >= 0)
+ printf (" This Raspberry Pi supports user-level GPIO access via /dev/gpiomem.\n") ;
+ else
+ {
+ printf (" You need to run your programs as root for GPIO access\n") ;
+ printf (" (Old /dev/mem method - consider upgrading)\n") ;
+ }
+
+ }
return 0 ;
}
if (strcasecmp (argv [1], "-warranty") == 0)
{
printf ("gpio version: %s\n", VERSION) ;
- printf ("Copyright (c) 2012-2013 Gordon Henderson\n") ;
+ printf ("Copyright (c) 2012-2015 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") ;
// Check for load command:
- if (strcasecmp (argv [1], "load" ) == 0) { doLoad (argc, argv) ; return 0 ; }
+ if (strcasecmp (argv [1], "load" ) == 0) { doLoad (argc, argv) ; return 0 ; }
+ if (strcasecmp (argv [1], "unload" ) == 0) { doUnLoad (argc, argv) ; return 0 ; }
// Gertboard commands
exit (EXIT_FAILURE) ;
}
- if (!doExtension (argv [0], argv [2])) // Prints its own error messages
+ if (!loadWPiExtension (argv [0], argv [2], TRUE)) // Prints its own error messages
exit (EXIT_FAILURE) ;
for (i = 3 ; i < argc ; ++i)
// 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 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], "pwmTone" ) == 0) doPwmTone (argc, argv) ;
+ else if (strcasecmp (argv [1], "drive" ) == 0) doPadDrive (argc, argv) ;
+ else if (strcasecmp (argv [1], "usbp" ) == 0) doUsbP (argc, argv) ;
+ else if (strcasecmp (argv [1], "readall" ) == 0) doReadall () ;
+ else if (strcasecmp (argv [1], "nreadall" ) == 0) doReadall () ;
+ else if (strcasecmp (argv [1], "pins" ) == 0) doPins () ;
+ 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]) ;
~ianmdlvl / wiringPi.git / blobdiff