Update interupt handler, callback param.

Update interupt handler callback, enabling argument passing.
see: https://www.raspberrypi.org/forums/viewtopic.php?f=33&t=104814
see: demopadgithub/HELPERMONKEYS@2090e9b

gpio/Makefile

@@ -33,7 +33,9 @@ endif
 #DEBUG	= -g -O0
 DEBUG	= -O2
 CC	= gcc
-INCLUDE	= -I$(DESTDIR)$(PREFIX)/include
+#INCLUDE	= -I$(DESTDIR)$(PREFIX)/include
+ROOT_DIR := $(shell dirname $(realpath $(lastword $(MAKEFILE_LIST))))
+INCLUDE = -I$(DESTDIR)$(PREFIX)/include -I$(ROOT_DIR)/devLib
 CFLAGS	= $(DEBUG) -Wall -Wextra $(INCLUDE) -Winline -pipe
 
 LDFLAGS	= -L$(DESTDIR)$(PREFIX)/lib

gpio/gpio.c

@@ -541,7 +541,7 @@ void doExport (int argc, char *argv [])
  *********************************************************************************
  */
 
-static void wfi (void)
+static void wfi (void* arg)
   { exit (0) ; }
 
 void doWfi (int argc, char *argv [])
@@ -565,7 +565,7 @@ void doWfi (int argc, char *argv [])
     exit (1) ;
   }
 
-  if (wiringPiISR (pin, mode, &wfi) < 0)
+  if (wiringPiISR (pin, mode, &wfi,NULL) < 0)
   {
     fprintf (stderr, "%s: wfi: Unable to setup ISR: %s\n", argv [1], strerror (errno)) ;
     exit (1) ;

wiringPi/wiringPi.c

@@ -322,7 +322,7 @@ static int sysFds [64] =
 
 // ISR Data
 
-static void (*isrFunctions [64])(void) ;
+static void (*isrFunctions [64])(void*) ;
 
 
 // Doing it the Arduino way with lookup tables...
@@ -1933,7 +1933,7 @@ static void *interruptHandler (UNU void *arg)
 
   for (;;)
     if (waitForInterrupt (myPin, -1) > 0)
-      isrFunctions [myPin] () ;
+      isrFunctions [myPin] (arg) ;
 
   return NULL ;
 }
@@ -1947,7 +1947,7 @@ static void *interruptHandler (UNU void *arg)
  *********************************************************************************
  */
 
-int wiringPiISR (int pin, int mode, void (*function)(void))
+int wiringPiISR (int pin, int mode, void (*function)(void), void* userData)
 {
   pthread_t threadId ;
   const char *modeS ;
@@ -2029,7 +2029,7 @@ int wiringPiISR (int pin, int mode, void (*function)(void))
 
   pthread_mutex_lock (&pinMutex) ;
     pinPass = pin ;
-    pthread_create (&threadId, NULL, interruptHandler, NULL) ;
+    pthread_create (&threadId, NULL, interruptHandler, userData) ;
     while (pinPass != -1)
       delay (1) ;
   pthread_mutex_unlock (&pinMutex) ;

wiringPi/wiringPi.h

@@ -238,7 +238,7 @@ extern          void digitalWriteByte2   (int value) ;
 //	(Also Pi hardware specific)
 
 extern int  waitForInterrupt    (int pin, int mS) ;
-extern int  wiringPiISR         (int pin, int mode, void (*function)(void)) ;
+extern int  wiringPiISR         (int pin, int mode, void (*function)(void), void *userData) ;
 
 // Threads