20 lines
553 B
C
20 lines
553 B
C
#ifndef ANALOG_READ_H
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#define ANALOG_READ_H
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/** analog read:
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* change ADMUX MUXn and REFS1:0 to select channel,
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* ADC enbale bit: ADEN in ADCSRA
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* ADC is data reg. Right ajusted, can be left by ADLAR in ADMUX
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* If left ajusted & no more then 8 bits, read ADCH, otherwise first ADCL
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* Conversion:
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* Set ADSC (is cleared once conversion is done)
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* Or: ADTS mux bits in ADCSRA for auto trigger (will trigger on high)
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* interrupt flag will be enabled
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**/
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//PORTF pin 1 hardcoded as analog
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uint8_t analog_read_8bit();
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void init_adc();
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#endif
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