diff options
Diffstat (limited to 'cores/arduino/wiring_analog.c')
| -rw-r--r-- | cores/arduino/wiring_analog.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/cores/arduino/wiring_analog.c b/cores/arduino/wiring_analog.c index 1a4701a..967c2b9 100644 --- a/cores/arduino/wiring_analog.c +++ b/cores/arduino/wiring_analog.c @@ -64,8 +64,12 @@ int analogRead(uint8_t pin) // channel (low 4 bits). this also sets ADLAR (left-adjust result) // to 0 (the default). #if defined(ADMUX) +#if defined(__AVR_ATtiny25__) || defined(__AVR_ATtiny45__) || defined(__AVR_ATtiny85__) + ADMUX = (analog_reference << 4) | (pin & 0x07); +#else ADMUX = (analog_reference << 6) | (pin & 0x07); #endif +#endif // without a delay, we seem to read from the wrong channel //delay(1); |