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feat(ex02): done

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Maix0 2026-04-24 14:43:35 +02:00
parent b7580c043c
commit 0fe7dbdc0f
23 changed files with 1469 additions and 0 deletions
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74
ex02/include/adc.h Normal file
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#ifndef ADC_H
#define ADC_H
#include <avr/io.h>
#include "mystd.h"
typedef enum e_adc_ref {
ADC_AREF = 0,
ADC_AVCC = BV(REFS0),
ADC_INT = BV(REFS0) | BV(REFS1),
_ADC_REF_MASK = BV(REFS0) | BV(REFS1),
} e_adc_ref;
typedef enum e_adc_size {
ADC_10BIT = 0,
ADC_8BIT = BV(ADLAR),
_ADC_SIZE_MASK = BV(ADLAR),
} e_adc_size;
typedef enum e_adc_prescaler {
ADC_PRESCALER_2 = BV(ADPS0),
ADC_PRESCALER_4 = BV(ADPS1),
ADC_PRESCALER_8 = BV(ADPS1) | BV(ADPS0),
ADC_PRESCALER_16 = BV(ADPS2),
ADC_PRESCALER_32 = BV(ADPS2) | BV(ADPS0),
ADC_PRESCALER_64 = BV(ADPS2) | BV(ADPS1),
ADC_PRESCALER_128 = BV(ADPS2) | BV(ADPS1) | BV(ADPS0),
_ADC_PRESCALER_MASK = BV(ADPS2) | BV(ADPS1) | BV(ADPS0),
} e_adc_prescaler;
typedef enum e_adc_input {
ADC_ADC0 = 0,
ADC_ADC1 = BV(MUX0),
ADC_ADC2 = BV(MUX1),
ADC_ADC3 = BV(MUX0) | BV(MUX1),
ADC_ADC4 = BV(MUX2),
ADC_ADC5 = BV(MUX2) | BV(MUX0),
ADC_ADC6 = BV(MUX2) | BV(MUX1),
ADC_ADC7 = BV(MUX2) | BV(MUX1) | BV(MUX0),
ADC_TEMP = BV(MUX3),
ADC_11V = BV(MUX3) | BV(MUX2) | BV(MUX1),
ADC_0V = BV(MUX3) | BV(MUX2) | BV(MUX1) | BV(MUX0),
_ADC_INPUT_MASK = BV(MUX0) | BV(MUX1) | BV(MUX2) | BV(MUX3),
} e_adc_input;
static inline uint8_t adc_read_pin(e_adc_input input) {
ADMUX = (ADMUX & ~(_ADC_INPUT_MASK | _ADC_SIZE_MASK)) | input | BV(ADLAR);
ADCSRA |= BV(ADSC);
while (ADCSRA & BV(ADSC))
;
return ADCH;
}
static inline uint16_t adc_read_pin_10bit(e_adc_input input) {
ADMUX = (ADMUX & ~(_ADC_SIZE_MASK | _ADC_INPUT_MASK)) | (input & _ADC_INPUT_MASK);
ADCSRA |= BV(ADSC);
while (ADCSRA & BV(ADSC))
;
return ADC;
}
static inline void adc_init(e_adc_ref v_ref, e_adc_prescaler prescaler) {
ADMUX = (ADMUX & ~(_ADC_REF_MASK)) | v_ref;
ADCSRA = BV(ADEN) | (prescaler & _ADC_PRESCALER_MASK);
(void)adc_read_pin(0);
}
#endif /* ADC_H */