Node / markqvist / OpenModem.git / files / hardware / VREF.c

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#include "VREF.h"

#include "util/Config.h"

void VREF_init(void) {

// Enable output for OC2A and OC2B (PD7 and PD6)

VREF_DDR |= _BV(7) | _BV(6);

TCCR2A = _BV(WGM20) |

_BV(WGM21) |

_BV(COM2A1)|

_BV(COM2B1);

TCCR2B = _BV(CS20);

OCR2A = config_input_gain;

OCR2B = config_output_gain;

}

void vref_setADC(uint8_t value) {

config_input_gain = value;

OCR2A = 0xFF - config_input_gain;

}

void vref_setDAC(uint8_t value) {

config_output_gain = value;

OCR2B = config_output_gain;

}