Added attachInterruptToPin() function (Rob Tillaart)

Author: cmaglie

build/shared/revisions.txt

@@ -15,6 +15,7 @@ ARDUINO 1.5.5 BETA
        (http://www.djerickson.com/arduino/)
 * avr: Fixed wrong extended fuses on Arduino Yún when using external programmer
 * Added digitalPinToInterrupt variant macro (Paul Stoffregen)
+* Added attachInterruptToPin command (Rob Tillaart)
 * avr: Added yun variant with LED_BUILTIN definition
 
 ARDUINO 1.5.4 BETA 2013.09.10

hardware/arduino/avr/cores/arduino/Arduino.h

@@ -216,4 +216,22 @@ long map(long, long, long, long, long);
 
 #include "pins_arduino.h"
 
+static inline boolean attachInterruptToPin(uint8_t pin, void (*userFunc)(void), int mode)
+{
+  int irq = digitalPinToInterrupt(pin);
+  if (irq == NOT_AN_INTERRUPT)
+    return false;
+  attachInterrupt(irq, userFunc, mode);
+  return true;
+}
+
+static inline boolean detachInterruptFromPin(uint8_t pin)
+{
+  int irq = digitalPinToInterrupt(pin);
+  if (irq == NOT_AN_INTERRUPT)
+    return false;
+  detachInterrupt(irq);
+  return true;
+}
+
 #endif

hardware/arduino/sam/cores/arduino/WInterrupts.c

@@ -129,6 +129,24 @@ void detachInterrupt(uint32_t pin)
 	pio->PIO_IDR = mask;
 }
 
+boolean attachInterruptToPin(uint8_t pin, void (*userFunc)(void), int mode)
+{
+  int irq = digitalPinToInterrupt(pin);
+  if (irq == NOT_AN_INTERRUPT)
+    return false;
+  attachInterrupt(irq, userFunc, mode);
+  return true;
+}
+
+boolean detachInterruptFromPin(uint8_t pin)
+{
+  int irq = digitalPinToInterrupt(pin);
+  if (irq == NOT_AN_INTERRUPT)
+    return false;
+  detachInterrupt(irq);
+  return true;
+}
+
 #ifdef __cplusplus
 extern "C" {
 #endif

hardware/arduino/sam/cores/arduino/WInterrupts.h

@@ -29,6 +29,10 @@ void attachInterrupt(uint32_t pin, void (*callback)(void), uint32_t mode);
 
 void detachInterrupt(uint32_t pin);
 
+boolean attachInterruptToPin(uint8_t pin, void (*userFunc)(void), int mode);
+
+boolean detachInterruptFromPin(uint8_t pin);
+
 #ifdef __cplusplus
 }
 #endif