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Merge branch 'issue1366' of github.com:Lauszus/Arduino into Lauszus-i…
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cmaglie committed Jul 31, 2013
2 parents 598ab1d + dbd584e commit 293e46b
Showing 1 changed file with 8 additions and 8 deletions.
16 changes: 8 additions & 8 deletions hardware/arduino/cores/arduino/wiring_analog.c
Original file line number Diff line number Diff line change
Expand Up @@ -41,22 +41,22 @@ int analogRead(uint8_t pin)
{
uint8_t low, high;

#if defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
#if defined(analogPinToChannel)
#if defined(__AVR_ATmega32U4__)
if (pin >= 18) pin -= 18; // allow for channel or pin numbers
#endif
pin = analogPinToChannel(pin);
#elif defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
if (pin >= 54) pin -= 54; // allow for channel or pin numbers
#elif defined(__AVR_ATmega32U4__)
if (pin >= 18) pin -= 18; // allow for channel or pin numbers
#elif defined(__AVR_ATmega1284__) || defined(__AVR_ATmega1284P__) || defined(__AVR_ATmega644__) || defined(__AVR_ATmega644A__) || defined(__AVR_ATmega644P__) || defined(__AVR_ATmega644PA__)
if (pin >= 24) pin -= 24; // allow for channel or pin numbers
#elif defined(analogPinToChannel) && (defined(__AVR_ATtiny25__) || defined(__AVR_ATtiny45__) || defined(__AVR_ATtiny85__))
pin = analogPinToChannel(pin);
#else
if (pin >= 14) pin -= 14; // allow for channel or pin numbers
#endif

#if defined(__AVR_ATmega32U4__)
pin = analogPinToChannel(pin);
ADCSRB = (ADCSRB & ~(1 << MUX5)) | (((pin >> 3) & 0x01) << MUX5);
#elif defined(ADCSRB) && defined(MUX5)

#if defined(ADCSRB) && defined(MUX5)
// the MUX5 bit of ADCSRB selects whether we're reading from channels
// 0 to 7 (MUX5 low) or 8 to 15 (MUX5 high).
ADCSRB = (ADCSRB & ~(1 << MUX5)) | (((pin >> 3) & 0x01) << MUX5);
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