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@@ -2,7 +2,7 @@
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* gpio.c:
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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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+ * Copyright (c) 2012-2015 Gordon Henderson
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***********************************************************************
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* This file is part of wiringPi:
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* https://projects.drogon.net/raspberry-pi/wiringpi/
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@@ -26,42 +26,81 @@
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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+#include <ctype.h>
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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-#include <sys/types.h>
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#include <fcntl.h>
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+#include <sys/types.h>
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+#include <sys/stat.h>
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#include <wiringPi.h>
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+#include <wpiExtensions.h>
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+
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#include <gertboard.h>
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+#include <piFace.h>
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+
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+#include "version.h"
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extern int wiringPiDebug ;
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+// External functions I can't be bothered creating a separate .h file for:
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+
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+extern void doReadall (void) ;
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+extern void doPins (void) ;
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+
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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 "1.12"
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+#define PI_USB_POWER_CONTROL 38
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+#define I2CDETECT "/usr/sbin/i2cdetect"
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-static int wpMode ;
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+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/wb/pwm/clock/mode> ...\n"
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+ " gpio [-g|-1] [-x extension:params] ...\n"
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" gpio [-p] <read/write/wb> ...\n"
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- " gpio readall\n"
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- " gpio unexportall/exports ...\n"
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+ " gpio <read/write/aread/awritewb/pwm/clock/mode> ...\n"
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+ " gpio readall/reset\n"
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+ " gpio unexportall/exports\n"
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" gpio export/edge/unexport ...\n"
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+ " gpio wfi <pin> <mode>\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 pwmc <divider> \n"
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" gpio load spi/i2c\n"
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+ " gpio unload spi/i2c\n"
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+ " gpio i2cd/i2cdetect\n"
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+ " gpio usbp high/low\n"
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" gpio gbr <channel>\n"
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" gpio gbw <channel> <value>" ; // No trailing newline needed here.
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+#ifdef NOT_FOR_NOW
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+/*
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+ * decodePin:
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+ * Decode a pin "number" which can actually be a pin name to represent
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+ * one of the Pi's on-board pins.
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+ *********************************************************************************
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+ */
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+
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+static int decodePin (const char *str)
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+{
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+
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+// The first case - see if it's a number:
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+
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+ if (isdigit (str [0]))
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+ return atoi (str) ;
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+
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+ return 0 ;
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+}
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+#endif
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+
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+
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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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@@ -77,12 +116,9 @@ static void changeOwner (char *cmd, char *file)
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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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+ fprintf (stderr, "%s: Warning (not an error, do not report): 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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+ fprintf (stderr, "%s: Warning (not an error): Unable to change ownership of %s: %s\n", cmd, file, strerror (errno)) ;
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}
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}
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@@ -127,9 +163,25 @@ static int moduleLoaded (char *modName)
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*********************************************************************************
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*/
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+static void checkDevTree (char *argv [])
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+{
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+ struct stat statBuf ;
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+
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+ if (stat ("/proc/device-tree", &statBuf) == 0) // We're on a devtree system ...
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+ {
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+ fprintf (stderr,
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+"%s: Unable to load/unload modules as this Pi has the device tree enabled.\n"
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+" You need to run the raspi-config program (as root) and select the\n"
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+" modules (SPI or I2C) that you wish to load/unload there and reboot.\n"
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+" There is more information here:\n"
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+" https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=97314\n", argv [0]) ;
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+ exit (1) ;
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+ }
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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> [SPI bufferSize in KB | I2C baudrate in Kb/sec]\n", argv [0]) ;
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+ fprintf (stderr, "Usage: %s load <spi/i2c> [I2C baudrate in Kb/sec]\n", argv [0]) ;
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exit (1) ;
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}
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@@ -140,6 +192,8 @@ static void doLoad (int argc, char *argv [])
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char *file1, *file2 ;
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char args1 [32], args2 [32] ;
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+ checkDevTree (argv) ;
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+
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if (argc < 3)
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_doLoadUsage (argv) ;
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@@ -152,7 +206,10 @@ static void doLoad (int argc, char *argv [])
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file1 = "/dev/spidev0.0" ;
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file2 = "/dev/spidev0.1" ;
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if (argc == 4)
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- sprintf (args1, " bufsiz=%d", atoi (argv [3]) * 1024) ;
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+ {
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+ fprintf (stderr, "%s: Unable to set the buffer size now. Load aborted. Please see the man page.\n", argv [0]) ;
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+ exit (1) ;
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+ }
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else if (argc > 4)
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_doLoadUsage (argv) ;
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}
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@@ -172,13 +229,13 @@ static void doLoad (int argc, char *argv [])
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if (!moduleLoaded (module1))
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{
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- sprintf (cmd, "modprobe %s%s", module1, args1) ;
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+ sprintf (cmd, "/sbin/modprobe %s%s", module1, args1) ;
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system (cmd) ;
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}
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if (!moduleLoaded (module2))
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{
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- sprintf (cmd, "modprobe %s%s", module2, args2) ;
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+ sprintf (cmd, "/sbin/modprobe %s%s", module2, args2) ;
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system (cmd) ;
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}
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@@ -196,46 +253,82 @@ static void doLoad (int argc, char *argv [])
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/*
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- * doReadall:
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- * Read all the GPIO pins
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+ * doUnLoad:
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+ * Un-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 char *pinNames [] =
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+static void _doUnLoadUsage (char *argv [])
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{
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- "GPIO 0", "GPIO 1", "GPIO 2", "GPIO 3", "GPIO 4", "GPIO 5", "GPIO 6", "GPIO 7",
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- "SDA ", "SCL ",
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- "CE0 ", "CE1 ", "MOSI ", "MISO ", "SCLK ",
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- "TxD ", "RxD ",
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- "GPIO 8", "GPIO 9", "GPIO10", "GPIO11",
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-} ;
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+ fprintf (stderr, "Usage: %s unload <spi/i2c>\n", argv [0]) ;
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+ exit (1) ;
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+}
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-static char *alts [] =
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+static void doUnLoad (int argc, char *argv [])
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{
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- "IN ", "OUT ", "ALT5", "ALT4", "ALT0", "ALT1", "ALT2", "ALT3"
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-} ;
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+ char *module1, *module2 ;
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+ char cmd [80] ;
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-static void doReadall (void)
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-{
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- int pin ;
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+ checkDevTree (argv) ;
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- printf ("+----------+------+--------+------+-------+\n") ;
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- printf ("| wiringPi | GPIO | Name | Mode | Value |\n") ;
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- printf ("+----------+------+--------+------+-------+\n") ;
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+ if (argc != 3)
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+ _doUnLoadUsage (argv) ;
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- for (pin = 0 ; pin < 64 ; ++pin)
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+ /**/ if (strcasecmp (argv [2], "spi") == 0)
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{
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- if (wpiPinToGpio (pin) == -1)
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- continue ;
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+ module1 = "spidev" ;
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+ module2 = "spi_bcm2708" ;
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+ }
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+ else if (strcasecmp (argv [2], "i2c") == 0)
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+ {
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+ module1 = "i2c_dev" ;
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+ module2 = "i2c_bcm2708" ;
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+ }
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+ else
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+ _doUnLoadUsage (argv) ;
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+
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+ if (moduleLoaded (module1))
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+ {
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+ sprintf (cmd, "/sbin/rmmod %s", module1) ;
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+ system (cmd) ;
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+ }
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+
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+ if (moduleLoaded (module2))
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+ {
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+ sprintf (cmd, "/sbin/rmmod %s", module2) ;
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+ system (cmd) ;
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+ }
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+}
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+
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+
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+/*
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+ * doI2Cdetect:
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+ * Run the i2cdetect command with the right runes for this Pi revision
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+ *********************************************************************************
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+ */
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+
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+static void doI2Cdetect (int argc, char *argv [])
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+{
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+ int port = piBoardRev () == 1 ? 0 : 1 ;
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+ char command [128] ;
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+ struct stat statBuf ;
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+
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+ if (stat (I2CDETECT, &statBuf) < 0)
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+ {
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+ fprintf (stderr, "%s: Unable to find i2cdetect command: %s\n", argv [0], strerror (errno)) ;
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+ return ;
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+ }
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- printf ("| %6d | %3d | %s | %s | %s |\n",
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- pin, wpiPinToGpio (pin),
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- pinNames [pin],
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- alts [getAlt (pin)],
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- digitalRead (pin) == HIGH ? "High" : "Low ") ;
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+ if (!moduleLoaded ("i2c_dev"))
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+ {
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+ fprintf (stderr, "%s: The I2C kernel module(s) are not loaded.\n", argv [0]) ;
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+ return ;
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}
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- printf ("+----------+------+--------+------+-------+\n") ;
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+ sprintf (command, "%s -y %d", I2CDETECT, port) ;
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+ if (system (command) < 0)
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+ fprintf (stderr, "%s: Unable to run i2cdetect: %s\n", argv [0], strerror (errno)) ;
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+
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}
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@@ -252,9 +345,7 @@ static void doExports (int argc, char *argv [])
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char fName [128] ;
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char buf [16] ;
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-// Rather crude, but who knows what others are up to...
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-
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- for (first = 0, i = 0 ; i < 64 ; ++i)
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+ for (first = 0, i = 0 ; i < 64 ; ++i) // Crude, but effective
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{
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// Try to read the direction
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@@ -363,19 +454,23 @@ void doExport (int argc, char *argv [])
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exit (1) ;
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}
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- /**/ if ((strcasecmp (mode, "in") == 0) || (strcasecmp (mode, "input") == 0))
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+ /**/ if ((strcasecmp (mode, "in") == 0) || (strcasecmp (mode, "input") == 0))
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fprintf (fd, "in\n") ;
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- else if ((strcasecmp (mode, "out") == 0) || (strcasecmp (mode, "output") == 0))
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+ else if ((strcasecmp (mode, "out") == 0) || (strcasecmp (mode, "output") == 0))
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fprintf (fd, "out\n") ;
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+ else if ((strcasecmp (mode, "high") == 0) || (strcasecmp (mode, "up") == 0))
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+ fprintf (fd, "high\n") ;
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+ else if ((strcasecmp (mode, "low") == 0) || (strcasecmp (mode, "down") == 0))
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+ fprintf (fd, "low\n") ;
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else
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{
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- fprintf (stderr, "%s: Invalid mode: %s. Should be in or out\n", argv [1], mode) ;
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+ fprintf (stderr, "%s: Invalid mode: %s. Should be in, out, high or low\n", argv [1], mode) ;
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exit (1) ;
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}
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fclose (fd) ;
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-// Change ownership so the current user can actually use it!
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+// Change ownership 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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changeOwner (argv [0], fName) ;
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@@ -386,6 +481,52 @@ void doExport (int argc, char *argv [])
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}
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+/*
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+ * doWfi:
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+ * gpio wfi pin mode
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+ * Wait for Interrupt on a given pin.
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+ * Slight cheat here - it's easier to actually use ISR now (which calls
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+ * gpio to set the pin modes!) then we simply sleep, and expect the thread
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+ * to exit the program. Crude but effective.
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+ *********************************************************************************
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+ */
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+
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+static void wfi (void)
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+ { exit (0) ; }
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+
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+void doWfi (int argc, char *argv [])
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+{
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+ int pin, mode ;
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+
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+ if (argc != 4)
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+ {
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+ fprintf (stderr, "Usage: %s wfi pin mode\n", argv [0]) ;
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+ exit (1) ;
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+ }
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+
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+ pin = atoi (argv [2]) ;
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+
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+ /**/ if (strcasecmp (argv [3], "rising") == 0) mode = INT_EDGE_RISING ;
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+ else if (strcasecmp (argv [3], "falling") == 0) mode = INT_EDGE_FALLING ;
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+ else if (strcasecmp (argv [3], "both") == 0) mode = INT_EDGE_BOTH ;
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+ else
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+ {
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+ fprintf (stderr, "%s: wfi: Invalid mode: %s. Should be rising, falling or both\n", argv [1], argv [3]) ;
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+ exit (1) ;
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+ }
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+
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+ if (wiringPiISR (pin, mode, &wfi) < 0)
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+ {
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+ fprintf (stderr, "%s: wfi: Unable to setup ISR: %s\n", argv [1], strerror (errno)) ;
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+ exit (1) ;
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+ }
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+
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+ for (;;)
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+ delay (9999) ;
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+}
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+
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+
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+
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/*
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* doEdge:
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* gpio edge pin mode
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@@ -499,7 +640,7 @@ void doUnexport (int argc, char *argv [])
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*********************************************************************************
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*/
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-void doUnexportall (int argc, char *argv [])
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+void doUnexportall (char *progName)
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{
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FILE *fd ;
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int pin ;
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@@ -508,7 +649,7 @@ void doUnexportall (int argc, char *argv [])
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{
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if ((fd = fopen ("/sys/class/gpio/unexport", "w")) == NULL)
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{
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- fprintf (stderr, "%s: Unable to open GPIO export interface\n", argv [0]) ;
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+ fprintf (stderr, "%s: Unable to open GPIO export interface\n", progName) ;
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exit (1) ;
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}
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fprintf (fd, "%d\n", pin) ;
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@@ -517,6 +658,20 @@ void doUnexportall (int argc, char *argv [])
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}
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+/*
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+ * doReset:
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+ * Reset the GPIO pins - as much as we can do
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+ *********************************************************************************
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+ */
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+
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+static void doReset (char *progName)
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+{
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+ printf ("GPIO Reset is dangerous and has been removed from the gpio command.\n") ;
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|
|
+ 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") ;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
/*
|
|
|
* doMode:
|
|
|
* gpio mode pin mode ...
|
|
@@ -536,18 +691,25 @@ 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) ;
|
|
|
- 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) ;
|
|
@@ -591,6 +753,58 @@ static void doPadDrive (int argc, char *argv [])
|
|
|
}
|
|
|
|
|
|
|
|
|
+/*
|
|
|
+ * 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
|
|
@@ -604,7 +818,7 @@ 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 +827,23 @@ 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))
|
|
|
+ if ((value < 0) || (value > 255))
|
|
|
{
|
|
|
- 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 +868,20 @@ 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 +900,6 @@ 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 +913,31 @@ 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
|
|
@@ -742,16 +977,72 @@ void doRead (int argc, char *argv [])
|
|
|
}
|
|
|
|
|
|
pin = atoi (argv [2]) ;
|
|
|
+ val = digitalRead (pin) ;
|
|
|
+
|
|
|
+ printf ("%s\n", val == 0 ? "0" : "1") ;
|
|
|
+}
|
|
|
+
|
|
|
|
|
|
- if ((wpMode == WPI_MODE_PINS) && ((pin < 0) || (pin >= NUM_PINS)))
|
|
|
+/*
|
|
|
+ * doAread:
|
|
|
+ * Read an analog pin and return the value
|
|
|
+ *********************************************************************************
|
|
|
+ */
|
|
|
+
|
|
|
+void doAread (int argc, char *argv [])
|
|
|
+{
|
|
|
+ if (argc != 3)
|
|
|
{
|
|
|
- printf ("0\n") ;
|
|
|
- return ;
|
|
|
+ fprintf (stderr, "Usage: %s aread pin\n", argv [0]) ;
|
|
|
+ exit (1) ;
|
|
|
}
|
|
|
|
|
|
- val = digitalRead (pin) ;
|
|
|
+ printf ("%d\n", analogRead (atoi (argv [2]))) ;
|
|
|
+}
|
|
|
|
|
|
- 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)) ;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/*
|
|
|
+ * 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) ;
|
|
|
}
|
|
|
|
|
|
|
|
@@ -773,9 +1064,6 @@ 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 +1088,6 @@ 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) ;
|
|
@@ -863,6 +1148,56 @@ static void doPwmClock (int argc, char *argv [])
|
|
|
}
|
|
|
|
|
|
|
|
|
+/*
|
|
|
+ * doVersion:
|
|
|
+ * Handle the ever more complicated version command
|
|
|
+ *********************************************************************************
|
|
|
+ */
|
|
|
+
|
|
|
+static void doVersion (char *argv [])
|
|
|
+{
|
|
|
+ int model, rev, mem, maker, warranty ;
|
|
|
+ struct stat statBuf ;
|
|
|
+
|
|
|
+ printf ("gpio version: %s\n", VERSION) ;
|
|
|
+ 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") ;
|
|
|
+ piBoardId (&model, &rev, &mem, &maker, &warranty) ;
|
|
|
+
|
|
|
+/*************
|
|
|
+ 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], piMemorySize [mem], piMakerNames [maker], warranty ? "[Out of Warranty]" : "") ;
|
|
|
+
|
|
|
+// Check for device tree
|
|
|
+
|
|
|
+ if (stat ("/proc/device-tree", &statBuf) == 0) // We're on a devtree system ...
|
|
|
+ printf (" Device tree is enabled.\n") ;
|
|
|
+
|
|
|
+ if (stat ("/dev/gpiomem", &statBuf) == 0) // User level GPIO is GO
|
|
|
+ {
|
|
|
+ printf (" This Raspberry Pi supports user-level GPIO access.\n") ;
|
|
|
+ printf (" -> See the man-page for more details\n") ;
|
|
|
+ }
|
|
|
+ else
|
|
|
+ printf (" * Root or sudo required for GPIO access.\n") ;
|
|
|
+
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
/*
|
|
|
* main:
|
|
|
* Start here
|
|
@@ -885,27 +1220,35 @@ 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)
|
|
|
+// Version & Warranty
|
|
|
+// Wish I could remember why I have both -R and -V ...
|
|
|
+
|
|
|
+ if ((strcmp (argv [1], "-R") == 0) || (strcmp (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") ;
|
|
|
- printf ("For details type: %s -warranty\n", argv [0]) ;
|
|
|
- printf ("\n") ;
|
|
|
- printf ("This Raspberry Pi is a revision %d board.\n", piBoardRev ()) ;
|
|
|
+ printf ("%d\n", piBoardRev ()) ;
|
|
|
+ return 0 ;
|
|
|
+ }
|
|
|
+
|
|
|
+// Version and information
|
|
|
+
|
|
|
+ if (strcmp (argv [1], "-v") == 0)
|
|
|
+ {
|
|
|
+ doVersion (argv) ;
|
|
|
return 0 ;
|
|
|
}
|
|
|
|
|
|
if (strcasecmp (argv [1], "-warranty") == 0)
|
|
|
{
|
|
|
printf ("gpio version: %s\n", VERSION) ;
|
|
|
- printf ("Copyright (c) 2012 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") ;
|
|
@@ -934,12 +1277,13 @@ 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 ; }
|
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|
else if (strcasecmp (argv [1], "edge" ) == 0) { doEdge (argc, argv) ; return 0 ; }
|
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|
- else if (strcasecmp (argv [1], "unexportall") == 0) { doUnexportall (argc, argv) ; return 0 ; }
|
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|
else if (strcasecmp (argv [1], "unexport" ) == 0) { doUnexport (argc, argv) ; return 0 ; }
|
|
|
+ else if (strcasecmp (argv [1], "unexportall") == 0) { doUnexportall (argv [0]) ; return 0 ; }
|
|
|
|
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|
// 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
|
|
|
|
|
@@ -948,13 +1292,9 @@ int main (int argc, char *argv [])
|
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|
|
|
|
// 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 +1302,23 @@ 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 +1330,69 @@ 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 (!loadWPiExtension (argv [0], argv [2], TRUE)) // 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], "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]) ;
|
|
|
- exit (1) ;
|
|
|
+ exit (EXIT_FAILURE) ;
|
|
|
}
|
|
|
return 0 ;
|
|
|
}
|