2019-03-25 14:40:36 +00:00
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#include "adu.h"
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void ADU::init()
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{
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// externe Referenz an AREF
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ADMUX = 0;
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// ADC aktiviert, prescaler = 128
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ADCSRA = _BV(ADEN) | _BV(ADPS2) | _BV(ADPS1) | _BV(ADPS0);
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}
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uint16_t ADU::getValue(uint8_t channel)
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{
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// lege Kanal fest
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ADMUX = (ADMUX & 0xE0) | channel;
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// starte Konvertierung
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ADCSRA |= _BV(ADSC);
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// warte Konvertierungszeit ab
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_delay_us(13 * 1000000 * 128 / F_CPU + 1);
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// warte auf Ende
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while(ADCSRA & _BV(ADSC));
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2019-03-27 09:33:26 +00:00
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2019-03-25 14:40:36 +00:00
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return ADCW;
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}
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