Bedeutung bit() bitSet()

[i_make_it]

http://forum.arduino.cc/index.php?topic=253324.0

PRR = bit(PRTIM1); // only keep timer 0 going
ADCSRA &= ~ bit(ADEN); bitSet(PRR, PRADC); // Disable the ADC to save power


http://www.gammon.com.au/forum/?id=11497

Important note! You must use the PRR after setting ADCSRA to zero, otherwise the ADC is "frozen" in an active state.

Power Reduction Register (PRR)

• Bit 7 - PRTWI: Power Reduction TWI
• Bit 6 - PRTIM2: Power Reduction Timer/Counter2
• Bit 5 - PRTIM0: Power Reduction Timer/Counter0
• Bit 4 - Res: Reserved bit
• Bit 3 - PRTIM1: Power Reduction Timer/Counter1
• Bit 2 - PRSPI: Power Reduction Serial Peripheral Interface
• Bit 1 - PRUSART0: Power Reduction USART0
• Bit 0 - PRADC: Power Reduction ADC

ftp://bits.usc.edu/ee109/documents/ADC.pdf

ADCSRA - ADC Control and Status Register A
Bit 7 - The ADEN bit enables the ADC module. Must be set to 1 to do any ADC operations.


Google, copy and paste.
Hallo, kurz und schmerzlos, hoffe es hilft weiter.