Subversion Repositories – MLAB

(root)/Designs/Fluxgate_magnetometer/SW/firmware/libs/mcp4922.c

Rev 2116

#include <avr/io.h>
#include "mcp4922.h"
#include "spi.h"


void DAC_write(unsigned char data) {
  unsigned char first, second;
  first=(0b10110000 | data>>4); // DACB, unbuffered, 1x, ON, 12 data bites
  second=(data<<4);
    
  DAC_CS_PORT &= ~(1 << DAC_CS_PIN);
  SPI_MasterTransmit(first);
  SPI_MasterTransmit(second);
  DAC_CS_PORT |= 1 << DAC_CS_PIN;
}