Fixed missing definition of digitalPinToInterrupt, by adding macro which simply uses the pin number - as it doesnt need to be mapped

Author: rogerclarkmelbourne

STM32F1/cores/maple/wirish.h

@@ -104,5 +104,7 @@ typedef unsigned int word;
 #define clockCyclesToMicroseconds(a) ( ((a) * 1000L) / (F_CPU / 1000L) )
 #define microsecondsToClockCycles(a) ( (a) * (F_CPU / 1000000L) )
 
+#define digitalPinToInterrupt(pin) (pin)
+
 #endif