diff options
Diffstat (limited to 'cores/arduino/Arduino.h')
| -rwxr-xr-x | cores/arduino/Arduino.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/cores/arduino/Arduino.h b/cores/arduino/Arduino.h index 8673ab8..d4a22a6 100755 --- a/cores/arduino/Arduino.h +++ b/cores/arduino/Arduino.h @@ -171,6 +171,8 @@ extern const uint8_t PROGMEM digital_pin_to_timer_PGM[]; #define NOT_A_PIN 0 #define NOT_A_PORT 0 +#define NOT_AN_INTERRUPT -1 + #ifdef ARDUINO_MAIN #define PA 1 #define PB 2 |