3 * Swiss-Army-Knife, Set-UID command-line interface to the Raspberry
5 * Copyright (c) 2012-2013 Gordon Henderson
6 ***********************************************************************
7 * This file is part of wiringPi:
8 * https://projects.drogon.net/raspberry-pi/wiringpi/
10 * wiringPi is free software: you can redistribute it and/or modify
11 * it under the terms of the GNU Lesser General Public License as published by
12 * the Free Software Foundation, either version 3 of the License, or
13 * (at your option) any later version.
15 * wiringPi is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU Lesser General Public License for more details.
20 * You should have received a copy of the GNU Lesser General Public License
21 * along with wiringPi. If not, see <http://www.gnu.org/licenses/>.
22 ***********************************************************************
34 #include <sys/types.h>
39 #include <gertboard.h>
42 #include "extensions.h"
44 extern int wiringPiDebug ;
46 extern void doReadall (void) ;
47 extern void doReadallOld (void) ;
54 #define VERSION "2.11"
55 #define I2CDETECT "/usr/sbin/i2cdetect"
59 char *usage = "Usage: gpio -v\n"
61 " gpio [-g|-1] [-x extension:params] ...\n"
62 " gpio [-p] <read/write/wb> ...\n"
63 " gpio <read/write/aread/awritewb/pwm/clock/mode> ...\n"
64 " gpio readall/reset\n"
65 " gpio unexportall/exports\n"
66 " gpio export/edge/unexport ...\n"
67 " gpio wfi <pin> <mode>\n"
68 " gpio drive <group> <value>\n"
69 " gpio pwm-bal/pwm-ms \n"
70 " gpio pwmr <range> \n"
71 " gpio pwmc <divider> \n"
72 " gpio load spi/i2c\n"
73 " gpio i2cd/i2cdetect\n"
74 " gpio gbr <channel>\n"
75 " gpio gbw <channel> <value>" ; // No trailing newline needed here.
80 * Change the ownership of the file to the real userId of the calling
81 * program so we can access it.
82 *********************************************************************************
85 static void changeOwner (char *cmd, char *file)
87 uid_t uid = getuid () ;
88 uid_t gid = getgid () ;
90 if (chown (file, uid, gid) != 0)
92 if (errno == ENOENT) // Warn that it's not there
93 fprintf (stderr, "%s: Warning: File not present: %s\n", cmd, file) ;
96 fprintf (stderr, "%s: Unable to change ownership of %s: %s\n", cmd, file, strerror (errno)) ;
105 * Return true/false if the supplied module is loaded
106 *********************************************************************************
109 static int moduleLoaded (char *modName)
111 int len = strlen (modName) ;
113 FILE *fd = fopen ("/proc/modules", "r") ;
118 fprintf (stderr, "gpio: Unable to check modules: %s\n", strerror (errno)) ;
122 while (fgets (line, 80, fd) != NULL)
124 if (strncmp (line, modName, len) != 0)
139 * Load either the spi or i2c modules and change device ownerships, etc.
140 *********************************************************************************
143 static void _doLoadUsage (char *argv [])
145 fprintf (stderr, "Usage: %s load <spi/i2c> [SPI bufferSize in KB | I2C baudrate in Kb/sec]\n", argv [0]) ;
149 static void doLoad (int argc, char *argv [])
151 char *module1, *module2 ;
153 char *file1, *file2 ;
154 char args1 [32], args2 [32] ;
157 _doLoadUsage (argv) ;
159 args1 [0] = args2 [0] = 0 ;
161 /**/ if (strcasecmp (argv [2], "spi") == 0)
164 module2 = "spi_bcm2708" ;
165 file1 = "/dev/spidev0.0" ;
166 file2 = "/dev/spidev0.1" ;
168 sprintf (args1, " bufsiz=%d", atoi (argv [3]) * 1024) ;
170 _doLoadUsage (argv) ;
172 else if (strcasecmp (argv [2], "i2c") == 0)
174 module1 = "i2c_dev" ;
175 module2 = "i2c_bcm2708" ;
176 file1 = "/dev/i2c-0" ;
177 file2 = "/dev/i2c-1" ;
179 sprintf (args2, " baudrate=%d", atoi (argv [3]) * 1000) ;
181 _doLoadUsage (argv) ;
184 _doLoadUsage (argv) ;
186 if (!moduleLoaded (module1))
188 sprintf (cmd, "modprobe %s%s", module1, args1) ;
192 if (!moduleLoaded (module2))
194 sprintf (cmd, "modprobe %s%s", module2, args2) ;
198 if (!moduleLoaded (module2))
200 fprintf (stderr, "%s: Unable to load %s\n", argv [0], module2) ;
204 sleep (1) ; // To let things get settled
206 changeOwner (argv [0], file1) ;
207 changeOwner (argv [0], file2) ;
213 * Run the i2cdetect command with the right runes for this Pi revision
214 *********************************************************************************
217 static void doI2Cdetect (int argc, char *argv [])
219 int port = piBoardRev () == 1 ? 0 : 1 ;
221 struct stat statBuf ;
223 if (stat (I2CDETECT, &statBuf) < 0)
225 fprintf (stderr, "%s: Unable to find i2cdetect command: %s\n", argv [0], strerror (errno)) ;
229 if (!moduleLoaded ("i2c_dev"))
231 fprintf (stderr, "%s: The I2C kernel module(s) are not loaded.\n", argv [0]) ;
235 sprintf (command, "%s -y %d", I2CDETECT, port) ;
236 if (system (command) < 0)
237 fprintf (stderr, "%s: Unable to run i2cdetect: %s\n", argv [0], strerror (errno)) ;
244 * List all GPIO exports
245 *********************************************************************************
248 static void doExports (int argc, char *argv [])
255 for (first = 0, i = 0 ; i < 64 ; ++i) // Crude, but effective
258 // Try to read the direction
260 sprintf (fName, "/sys/class/gpio/gpio%d/direction", i) ;
261 if ((fd = open (fName, O_RDONLY)) == -1)
267 printf ("GPIO Pins exported:\n") ;
270 printf ("%4d: ", i) ;
272 if ((l = read (fd, buf, 16)) == 0)
273 sprintf (buf, "%s", "?") ;
276 if ((buf [strlen (buf) - 1]) == '\n')
277 buf [strlen (buf) - 1] = 0 ;
279 printf ("%-3s", buf) ;
283 // Try to Read the value
285 sprintf (fName, "/sys/class/gpio/gpio%d/value", i) ;
286 if ((fd = open (fName, O_RDONLY)) == -1)
288 printf ("No Value file (huh?)\n") ;
292 if ((l = read (fd, buf, 16)) == 0)
293 sprintf (buf, "%s", "?") ;
296 if ((buf [strlen (buf) - 1]) == '\n')
297 buf [strlen (buf) - 1] = 0 ;
299 printf (" %s", buf) ;
301 // Read any edge trigger file
303 sprintf (fName, "/sys/class/gpio/gpio%d/edge", i) ;
304 if ((fd = open (fName, O_RDONLY)) == -1)
310 if ((l = read (fd, buf, 16)) == 0)
311 sprintf (buf, "%s", "?") ;
314 if ((buf [strlen (buf) - 1]) == '\n')
315 buf [strlen (buf) - 1] = 0 ;
317 printf (" %-8s\n", buf) ;
326 * gpio export pin mode
327 * This uses the /sys/class/gpio device interface.
328 *********************************************************************************
331 void doExport (int argc, char *argv [])
340 fprintf (stderr, "Usage: %s export pin mode\n", argv [0]) ;
344 pin = atoi (argv [2]) ;
348 if ((fd = fopen ("/sys/class/gpio/export", "w")) == NULL)
350 fprintf (stderr, "%s: Unable to open GPIO export interface: %s\n", argv [0], strerror (errno)) ;
354 fprintf (fd, "%d\n", pin) ;
357 sprintf (fName, "/sys/class/gpio/gpio%d/direction", pin) ;
358 if ((fd = fopen (fName, "w")) == NULL)
360 fprintf (stderr, "%s: Unable to open GPIO direction interface for pin %d: %s\n", argv [0], pin, strerror (errno)) ;
364 /**/ if ((strcasecmp (mode, "in") == 0) || (strcasecmp (mode, "input") == 0))
365 fprintf (fd, "in\n") ;
366 else if ((strcasecmp (mode, "out") == 0) || (strcasecmp (mode, "output") == 0))
367 fprintf (fd, "out\n") ;
370 fprintf (stderr, "%s: Invalid mode: %s. Should be in or out\n", argv [1], mode) ;
376 // Change ownership so the current user can actually use it!
378 sprintf (fName, "/sys/class/gpio/gpio%d/value", pin) ;
379 changeOwner (argv [0], fName) ;
381 sprintf (fName, "/sys/class/gpio/gpio%d/edge", pin) ;
382 changeOwner (argv [0], fName) ;
390 * Wait for Interrupt on a given pin.
391 * Slight cheat here - it's easier to actually use ISR now (which calls
392 * gpio to set the pin modes!) then we simply sleep, and expect the thread
393 * to exit the program. Crude but effective.
394 *********************************************************************************
397 static void wfi (void)
400 void doWfi (int argc, char *argv [])
406 fprintf (stderr, "Usage: %s wfi pin mode\n", argv [0]) ;
410 pin = atoi (argv [2]) ;
412 /**/ if (strcasecmp (argv [3], "rising") == 0) mode = INT_EDGE_RISING ;
413 else if (strcasecmp (argv [3], "falling") == 0) mode = INT_EDGE_FALLING ;
414 else if (strcasecmp (argv [3], "both") == 0) mode = INT_EDGE_BOTH ;
417 fprintf (stderr, "%s: wfi: Invalid mode: %s. Should be rising, falling or both\n", argv [1], argv [3]) ;
421 if (wiringPiISR (pin, mode, &wfi) < 0)
423 fprintf (stderr, "%s: wfi: Unable to setup ISR: %s\n", argv [1], strerror (errno)) ;
436 * Easy access to changing the edge trigger on a GPIO pin
437 * This uses the /sys/class/gpio device interface.
438 *********************************************************************************
441 void doEdge (int argc, char *argv [])
450 fprintf (stderr, "Usage: %s edge pin mode\n", argv [0]) ;
454 pin = atoi (argv [2]) ;
457 // Export the pin and set direction to input
459 if ((fd = fopen ("/sys/class/gpio/export", "w")) == NULL)
461 fprintf (stderr, "%s: Unable to open GPIO export interface: %s\n", argv [0], strerror (errno)) ;
465 fprintf (fd, "%d\n", pin) ;
468 sprintf (fName, "/sys/class/gpio/gpio%d/direction", pin) ;
469 if ((fd = fopen (fName, "w")) == NULL)
471 fprintf (stderr, "%s: Unable to open GPIO direction interface for pin %d: %s\n", argv [0], pin, strerror (errno)) ;
475 fprintf (fd, "in\n") ;
478 sprintf (fName, "/sys/class/gpio/gpio%d/edge", pin) ;
479 if ((fd = fopen (fName, "w")) == NULL)
481 fprintf (stderr, "%s: Unable to open GPIO edge interface for pin %d: %s\n", argv [0], pin, strerror (errno)) ;
485 /**/ if (strcasecmp (mode, "none") == 0) fprintf (fd, "none\n") ;
486 else if (strcasecmp (mode, "rising") == 0) fprintf (fd, "rising\n") ;
487 else if (strcasecmp (mode, "falling") == 0) fprintf (fd, "falling\n") ;
488 else if (strcasecmp (mode, "both") == 0) fprintf (fd, "both\n") ;
491 fprintf (stderr, "%s: Invalid mode: %s. Should be none, rising, falling or both\n", argv [1], mode) ;
495 // Change ownership of the value and edge files, so the current user can actually use it!
497 sprintf (fName, "/sys/class/gpio/gpio%d/value", pin) ;
498 changeOwner (argv [0], fName) ;
500 sprintf (fName, "/sys/class/gpio/gpio%d/edge", pin) ;
501 changeOwner (argv [0], fName) ;
510 * This uses the /sys/class/gpio device interface.
511 *********************************************************************************
514 void doUnexport (int argc, char *argv [])
521 fprintf (stderr, "Usage: %s unexport pin\n", argv [0]) ;
525 pin = atoi (argv [2]) ;
527 if ((fd = fopen ("/sys/class/gpio/unexport", "w")) == NULL)
529 fprintf (stderr, "%s: Unable to open GPIO export interface\n", argv [0]) ;
533 fprintf (fd, "%d\n", pin) ;
541 * Un-Export all the GPIO pins.
542 * This uses the /sys/class/gpio device interface.
543 *********************************************************************************
546 void doUnexportall (char *progName)
551 for (pin = 0 ; pin < 63 ; ++pin)
553 if ((fd = fopen ("/sys/class/gpio/unexport", "w")) == NULL)
555 fprintf (stderr, "%s: Unable to open GPIO export interface\n", progName) ;
558 fprintf (fd, "%d\n", pin) ;
566 * Load readallExternal, we try to do this with an external device.
567 *********************************************************************************
570 static void doResetExternal (void)
574 for (pin = wiringPiNodes->pinBase ; pin <= wiringPiNodes->pinMax ; ++pin)
576 pinMode (pin, INPUT) ;
577 pullUpDnControl (pin, PUD_OFF) ;
584 * Reset the GPIO pins - as much as we can do
585 *********************************************************************************
588 static void doReset (char *progName)
592 if (wiringPiNodes != NULL) // External reset
596 doUnexportall (progName) ;
598 for (pin = 0 ; pin < 64 ; ++pin)
600 if (wpiPinToGpio (pin) == -1)
603 digitalWrite (pin, LOW) ;
604 pinMode (pin, INPUT) ;
605 pullUpDnControl (pin, PUD_OFF) ;
613 * gpio mode pin mode ...
614 *********************************************************************************
617 void doMode (int argc, char *argv [])
624 fprintf (stderr, "Usage: %s mode pin mode\n", argv [0]) ;
628 pin = atoi (argv [2]) ;
632 /**/ if (strcasecmp (mode, "in") == 0) pinMode (pin, INPUT) ;
633 else if (strcasecmp (mode, "input") == 0) pinMode (pin, INPUT) ;
634 else if (strcasecmp (mode, "out") == 0) pinMode (pin, OUTPUT) ;
635 else if (strcasecmp (mode, "output") == 0) pinMode (pin, OUTPUT) ;
636 else if (strcasecmp (mode, "pwm") == 0) pinMode (pin, PWM_OUTPUT) ;
637 else if (strcasecmp (mode, "clock") == 0) pinMode (pin, GPIO_CLOCK) ;
638 else if (strcasecmp (mode, "up") == 0) pullUpDnControl (pin, PUD_UP) ;
639 else if (strcasecmp (mode, "down") == 0) pullUpDnControl (pin, PUD_DOWN) ;
640 else if (strcasecmp (mode, "tri") == 0) pullUpDnControl (pin, PUD_OFF) ;
641 else if (strcasecmp (mode, "off") == 0) pullUpDnControl (pin, PUD_OFF) ;
644 fprintf (stderr, "%s: Invalid mode: %s. Should be in/out/pwm/clock/up/down/tri\n", argv [1], mode) ;
652 * gpio drive group value
653 *********************************************************************************
656 static void doPadDrive (int argc, char *argv [])
662 fprintf (stderr, "Usage: %s drive group value\n", argv [0]) ;
666 group = atoi (argv [2]) ;
667 val = atoi (argv [3]) ;
669 if ((group < 0) || (group > 2))
671 fprintf (stderr, "%s: drive group not 0, 1 or 2: %d\n", argv [0], group) ;
675 if ((val < 0) || (val > 7))
677 fprintf (stderr, "%s: drive value not 0-7: %d\n", argv [0], val) ;
681 setPadDrive (group, val) ;
687 * gpio gbw channel value
688 * Gertboard Write - To the Analog output
689 *********************************************************************************
692 static void doGbw (int argc, char *argv [])
698 fprintf (stderr, "Usage: %s gbw <channel> <value>\n", argv [0]) ;
702 channel = atoi (argv [2]) ;
703 value = atoi (argv [3]) ;
705 if ((channel < 0) || (channel > 1))
707 fprintf (stderr, "%s: gbw: Channel number must be 0 or 1\n", argv [0]) ;
711 if ((value < 0) || (value > 1023))
713 fprintf (stderr, "%s: gbw: Value must be from 0 to 255\n", argv [0]) ;
717 if (gertboardAnalogSetup (64) < 0)
719 fprintf (stderr, "Unable to initialise the Gertboard SPI interface: %s\n", strerror (errno)) ;
723 analogWrite (64 + channel, value) ;
730 * From the analog input
731 *********************************************************************************
734 static void doGbr (int argc, char *argv [])
740 fprintf (stderr, "Usage: %s gbr <channel>\n", argv [0]) ;
744 channel = atoi (argv [2]) ;
746 if ((channel < 0) || (channel > 1))
748 fprintf (stderr, "%s: gbr: Channel number must be 0 or 1\n", argv [0]) ;
752 if (gertboardAnalogSetup (64) < 0)
754 fprintf (stderr, "Unable to initialise the Gertboard SPI interface: %s\n", strerror (errno)) ;
758 printf ("%d\n", analogRead (64 + channel)) ;
764 * gpio write pin value
765 *********************************************************************************
768 static void doWrite (int argc, char *argv [])
774 fprintf (stderr, "Usage: %s write pin value\n", argv [0]) ;
778 pin = atoi (argv [2]) ;
780 /**/ if ((strcasecmp (argv [3], "up") == 0) || (strcasecmp (argv [3], "on") == 0))
782 else if ((strcasecmp (argv [3], "down") == 0) || (strcasecmp (argv [3], "off") == 0))
785 val = atoi (argv [3]) ;
788 digitalWrite (pin, LOW) ;
790 digitalWrite (pin, HIGH) ;
796 * gpio awrite pin value
797 *********************************************************************************
800 static void doAwrite (int argc, char *argv [])
806 fprintf (stderr, "Usage: %s awrite pin value\n", argv [0]) ;
810 pin = atoi (argv [2]) ;
812 val = atoi (argv [3]) ;
814 analogWrite (pin, val) ;
821 *********************************************************************************
824 static void doWriteByte (int argc, char *argv [])
830 fprintf (stderr, "Usage: %s wb value\n", argv [0]) ;
834 val = (int)strtol (argv [2], NULL, 0) ;
836 digitalWriteByte (val) ;
842 * Read a pin and return the value
843 *********************************************************************************
846 void doRead (int argc, char *argv [])
852 fprintf (stderr, "Usage: %s read pin\n", argv [0]) ;
856 pin = atoi (argv [2]) ;
857 val = digitalRead (pin) ;
859 printf ("%s\n", val == 0 ? "0" : "1") ;
865 * Read an analog pin and return the value
866 *********************************************************************************
869 void doAread (int argc, char *argv [])
873 fprintf (stderr, "Usage: %s aread pin\n", argv [0]) ;
877 printf ("%d\n", analogRead (atoi (argv [2]))) ;
884 *********************************************************************************
887 void doToggle (int argc, char *argv [])
893 fprintf (stderr, "Usage: %s toggle pin\n", argv [0]) ;
897 pin = atoi (argv [2]) ;
899 digitalWrite (pin, !digitalRead (pin)) ;
904 * Output a clock on a pin
905 *********************************************************************************
908 void doClock (int argc, char *argv [])
914 fprintf (stderr, "Usage: %s clock <pin> <freq>\n", argv [0]) ;
918 pin = atoi (argv [2]) ;
920 freq = atoi (argv [3]) ;
922 gpioClockSet (pin, freq) ;
928 * Output a PWM value on a pin
929 *********************************************************************************
932 void doPwm (int argc, char *argv [])
938 fprintf (stderr, "Usage: %s pwm <pin> <value>\n", argv [0]) ;
942 pin = atoi (argv [2]) ;
944 val = atoi (argv [3]) ;
946 pwmWrite (pin, val) ;
951 * doPwmMode: doPwmRange: doPwmClock:
952 * Change the PWM mode, range and clock divider values
953 *********************************************************************************
956 static void doPwmMode (int mode)
961 static void doPwmRange (int argc, char *argv [])
967 fprintf (stderr, "Usage: %s pwmr <range>\n", argv [0]) ;
971 range = (unsigned int)strtoul (argv [2], NULL, 10) ;
975 fprintf (stderr, "%s: range must be > 0\n", argv [0]) ;
979 pwmSetRange (range) ;
982 static void doPwmClock (int argc, char *argv [])
988 fprintf (stderr, "Usage: %s pwmc <clock>\n", argv [0]) ;
992 clock = (unsigned int)strtoul (argv [2], NULL, 10) ;
994 if ((clock < 1) || (clock > 4095))
996 fprintf (stderr, "%s: clock must be between 0 and 4096\n", argv [0]) ;
1000 pwmSetClock (clock) ;
1007 *********************************************************************************
1010 int main (int argc, char *argv [])
1014 if (getenv ("WIRINGPI_DEBUG") != NULL)
1016 printf ("gpio: wiringPi debug mode enabled\n") ;
1017 wiringPiDebug = TRUE ;
1022 fprintf (stderr, "%s\n", usage) ;
1028 if (strcasecmp (argv [1], "-h") == 0)
1030 printf ("%s: %s\n", argv [0], usage) ;
1034 // Sort of a special:
1036 if (strcmp (argv [1], "-R") == 0)
1038 printf ("%d\n", piBoardRev ()) ;
1042 // Version & Warranty
1044 if (strcmp (argv [1], "-V") == 0)
1046 printf ("%d\n", piBoardRev ()) ;
1050 if (strcmp (argv [1], "-v") == 0)
1052 printf ("gpio version: %s\n", VERSION) ;
1053 printf ("Copyright (c) 2012-2013 Gordon Henderson\n") ;
1054 printf ("This is free software with ABSOLUTELY NO WARRANTY.\n") ;
1055 printf ("For details type: %s -warranty\n", argv [0]) ;
1057 printf ("This Raspberry Pi is a revision %d board.\n", piBoardRev ()) ;
1061 if (strcasecmp (argv [1], "-warranty") == 0)
1063 printf ("gpio version: %s\n", VERSION) ;
1064 printf ("Copyright (c) 2012-2013 Gordon Henderson\n") ;
1066 printf (" This program is free software; you can redistribute it and/or modify\n") ;
1067 printf (" it under the terms of the GNU Leser General Public License as published\n") ;
1068 printf (" by the Free Software Foundation, either version 3 of the License, or\n") ;
1069 printf (" (at your option) any later version.\n") ;
1071 printf (" This program is distributed in the hope that it will be useful,\n") ;
1072 printf (" but WITHOUT ANY WARRANTY; without even the implied warranty of\n") ;
1073 printf (" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n") ;
1074 printf (" GNU Lesser General Public License for more details.\n") ;
1076 printf (" You should have received a copy of the GNU Lesser General Public License\n") ;
1077 printf (" along with this program. If not, see <http://www.gnu.org/licenses/>.\n") ;
1082 if (geteuid () != 0)
1084 fprintf (stderr, "%s: Must be root to run. Program should be suid root. This is an error.\n", argv [0]) ;
1088 // Initial test for /sys/class/gpio operations:
1090 /**/ if (strcasecmp (argv [1], "exports" ) == 0) { doExports (argc, argv) ; return 0 ; }
1091 else if (strcasecmp (argv [1], "export" ) == 0) { doExport (argc, argv) ; return 0 ; }
1092 else if (strcasecmp (argv [1], "edge" ) == 0) { doEdge (argc, argv) ; return 0 ; }
1093 else if (strcasecmp (argv [1], "unexport" ) == 0) { doUnexport (argc, argv) ; return 0 ; }
1094 else if (strcasecmp (argv [1], "unexportall") == 0) { doUnexportall (argv [0]) ; return 0 ; }
1096 // Check for load command:
1098 if (strcasecmp (argv [1], "load" ) == 0) { doLoad (argc, argv) ; return 0 ; }
1100 // Gertboard commands
1102 if (strcasecmp (argv [1], "gbr" ) == 0) { doGbr (argc, argv) ; return 0 ; }
1103 if (strcasecmp (argv [1], "gbw" ) == 0) { doGbw (argc, argv) ; return 0 ; }
1105 // Check for -g argument
1107 /**/ if (strcasecmp (argv [1], "-g") == 0)
1109 wiringPiSetupGpio () ;
1111 for (i = 2 ; i < argc ; ++i)
1112 argv [i - 1] = argv [i] ;
1114 wpMode = WPI_MODE_GPIO ;
1117 // Check for -1 argument
1119 else if (strcasecmp (argv [1], "-1") == 0)
1121 wiringPiSetupPhys () ;
1123 for (i = 2 ; i < argc ; ++i)
1124 argv [i - 1] = argv [i] ;
1126 wpMode = WPI_MODE_PHYS ;
1129 // Check for -p argument for PiFace
1131 else if (strcasecmp (argv [1], "-p") == 0)
1135 for (i = 2 ; i < argc ; ++i)
1136 argv [i - 1] = argv [i] ;
1138 wpMode = WPI_MODE_PIFACE ;
1141 // Default to wiringPi mode
1146 wpMode = WPI_MODE_PINS ;
1149 // Check for -x argument to load in a new extension
1151 if (strcasecmp (argv [1], "-x") == 0)
1155 fprintf (stderr, "%s: -x missing extension specification.\n", argv [0]) ;
1156 exit (EXIT_FAILURE) ;
1159 if (!doExtension (argv [0], argv [2])) // Prints its own error messages
1160 exit (EXIT_FAILURE) ;
1162 for (i = 3 ; i < argc ; ++i)
1163 argv [i - 2] = argv [i] ;
1169 fprintf (stderr, "%s: no command given\n", argv [0]) ;
1170 exit (EXIT_FAILURE) ;
1173 // Core wiringPi functions
1175 /**/ if (strcasecmp (argv [1], "mode" ) == 0) doMode (argc, argv) ;
1176 else if (strcasecmp (argv [1], "read" ) == 0) doRead (argc, argv) ;
1177 else if (strcasecmp (argv [1], "write" ) == 0) doWrite (argc, argv) ;
1178 else if (strcasecmp (argv [1], "pwm" ) == 0) doPwm (argc, argv) ;
1179 else if (strcasecmp (argv [1], "awrite" ) == 0) doAwrite (argc, argv) ;
1180 else if (strcasecmp (argv [1], "aread" ) == 0) doAread (argc, argv) ;
1184 else if (strcasecmp (argv [1], "toggle" ) == 0) doToggle (argc, argv) ;
1188 else if (strcasecmp (argv [1], "pwm-bal" ) == 0) doPwmMode (PWM_MODE_BAL) ;
1189 else if (strcasecmp (argv [1], "pwm-ms" ) == 0) doPwmMode (PWM_MODE_MS) ;
1190 else if (strcasecmp (argv [1], "pwmr" ) == 0) doPwmRange (argc, argv) ;
1191 else if (strcasecmp (argv [1], "pwmc" ) == 0) doPwmClock (argc, argv) ;
1192 else if (strcasecmp (argv [1], "drive" ) == 0) doPadDrive (argc, argv) ;
1193 else if (strcasecmp (argv [1], "readall" ) == 0) doReadallOld () ;
1194 else if (strcasecmp (argv [1], "nreadall" ) == 0) doReadall () ;
1195 else if (strcasecmp (argv [1], "i2cdetect") == 0) doI2Cdetect (argc, argv) ;
1196 else if (strcasecmp (argv [1], "i2cd" ) == 0) doI2Cdetect (argc, argv) ;
1197 else if (strcasecmp (argv [1], "reset" ) == 0) doReset (argv [0]) ;
1198 else if (strcasecmp (argv [1], "wb" ) == 0) doWriteByte (argc, argv) ;
1199 else if (strcasecmp (argv [1], "clock" ) == 0) doClock (argc, argv) ;
1200 else if (strcasecmp (argv [1], "wfi" ) == 0) doWfi (argc, argv) ;
1203 fprintf (stderr, "%s: Unknown command: %s.\n", argv [0], argv [1]) ;
1204 exit (EXIT_FAILURE) ;