DAC.cpp

/*
 * DAC.cpp
 *
 *  Created on: Mar 23, 2016
 *      Author: conne
 */

#include "DAC.h"

volatile struct DAC_REGS *DAC_PTR[4] = {0x0,&DacaRegs,&DacbRegs,&DaccRegs};

void DAC_INIT(uint16_t dac)
{
   EALLOW;
   switch(dac) {
   case 1:
     CpuSysRegs.PCLKCR16.bit.DAC_A = 1;
     break;
   case 2:
     CpuSysRegs.PCLKCR16.bit.DAC_B = 1;
     break;
   case 3:
     CpuSysRegs.PCLKCR16.bit.DAC_A = 1;
     break;
   }
   DAC_PTR[dac]->DACCTL.bit.DACREFSEL = REFERENCE_VDAC;
   DAC_PTR[dac]->DACOUTEN.bit.DACOUTEN = 1;
   EDIS;
}

void DAC_OUT(uint16_t dac, float value, int32_t gain, int32_t offset)
{
  DAC_PTR[dac]->DACVALS.bit.DACVALS = (value*gain) + offset;
}

DAC.h

/*
 * DAC.h
 *
 *  Created on: Mar 23, 2016
 *      Author: cbrooks
 */

#ifndef DAC_H_
#define DAC_H_

#include <stdint.h>
#include <Energia.h>

// Defines
#define REFERENCE_VDAC     0
#define REFERENCE_VREF     1

#define DACA				1
#define DACB				2
#define DACC				3

// DAC initialization
void DAC_INIT(uint16_t dac);

// DAC output functions
void DAC_OUT(uint16_t dac, float value, int32_t gain, int32_t offset);

#endif /* DAC_H_ */