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74 lines
1.4 KiB
C
74 lines
1.4 KiB
C
/*
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* adc.c
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*
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* Created: 09/12/2021 16:31:16
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* Author: n0x
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*/
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#include "adc.h"
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void
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adc_init(void)
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{
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ADMUX = (1<<REFS1)|
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(0<<REFS0)| /* Set Voltage reference to 2.56V */
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(0<<ADLAR) /* Set ADLAR to 0 to not left adjust the presentation of the conversion result */
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;
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ADCSRA = (1<<ADEN)| /* Enable ADC */
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(0<<ADATE)| /* Disable the ADC auto trigger */
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(1<<ADIE)| /* Enable the ADC interrupt */
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(1<<ADPS2)|
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(1<<ADPS1)|
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(1<<ADPS0) /* Set ADC Prescaler to 128 */
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;
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}
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volatile int done = 1;
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/* ADC 1 */
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uint16_t
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adc_get_poti(void)
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{
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uint16_t adc;
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ADCSRA &= ~(1<<ADIE); /* Disable interrupt */
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ADMUX |= (1<<MUX0); /* Set ADMUX to access ADC channel 1 */
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ADCSRA |= (1<<ADSC); /* Start the conversion */
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done = 0; /* reset the done flag to false */
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while(done == 0); /* Wait till conversion completes */
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adc = ADC;
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ADCSRA |= (1<<ADIE); /* Enable the interrupt again */
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return adc;
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}
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/* ADC 0 */
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uint16_t
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adc_get_LM35(void)
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{
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uint16_t adc;
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ADCSRA &= ~(1<<ADIE); /* Disable interrupt */
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ADMUX &= (0<<MUX0); /* Set ADMUX to access ADC channel 0 */
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ADCSRA |= (1<<ADSC); /* Start the conversion */
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done = 0; /* reset the done flag to false */
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while(done == 0); /* Wait till conversion completes */
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adc = ADC;
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ADCSRA |= (1<<ADIE); /* Enable the interrupt again */
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return adc;
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}
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ISR(ADC_vect){
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done = 1; /* set the done flag to true */
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} |