mirror of
https://github.com/markqvist/OpenModem.git
synced 2024-12-20 21:34:21 -05:00
30 lines
557 B
C
30 lines
557 B
C
#include "VREF.h"
|
|
|
|
uint8_t adcReference = CONFIG_ADC_REF;
|
|
uint8_t dacReference = CONFIG_DAC_REF;
|
|
|
|
void VREF_init(void) {
|
|
// Enable output for OC2A and OC2B (PD7 and PD6)
|
|
DDRD |= _BV(7) | _BV(6);
|
|
|
|
TCCR2A = _BV(WGM20) |
|
|
_BV(WGM21) |
|
|
_BV(COM2A1)|
|
|
_BV(COM2B1);
|
|
|
|
TCCR2B = _BV(CS20);
|
|
|
|
OCR2A = adcReference;
|
|
OCR2B = dacReference;
|
|
}
|
|
|
|
|
|
void vref_setADC(uint8_t value) {
|
|
adcReference = value;
|
|
OCR2A = adcReference;
|
|
}
|
|
|
|
void vref_setDAC(uint8_t value) {
|
|
dacReference = value;
|
|
OCR2B = dacReference;
|
|
} |