/*
 * dac101c085.c
 *
 *  Created on: 21 Jul 2019
 *      Author: maximilian
 */

#include "dac101c085.h"

static uint8_t i2c_initialized = 0;

void init(void)
{
	if (!i2c_initialized) {
		i2cInit(I2Cx_DAC);
		i2c_initialized = 1;
	}
}

void setDAC(uint16_t new_value)
{
	uint8_t ub = (new_value >> 6) & 0x0F;
	//uint8_t ub = 0x10;
	uint8_t lb = (new_value << 2) & 0xFF;
	init();
	osPrintf("Upper %d\n", ub);
	osPrintf("Lower %d\n", lb);
	i2cStartTransmission(I2Cx_DAC, I2C_Direction_Transmitter, DAC_ADDR);
	i2cWrite(I2Cx_DAC, &ub);
	i2cWrite(I2Cx_DAC, &lb);
	i2cEndTransmission(I2Cx_DAC);
}

uint16_t readDAC(void)
{
	uint16_t dac_val = 1;
	i2cStartTransmission(I2Cx_DAC, I2C_Direction_Receiver, DAC_ADDR);
	i2cAckOn(I2Cx_DAC);
	dac_val = i2cRead(I2Cx_DAC);
	i2cAckOff(I2Cx_DAC);
	dac_val = (dac_val<<8);
	dac_val |= i2cRead(I2Cx_DAC);
	i2cEndTransmission(I2Cx_DAC);
	return dac_val>>2;
}