/*
 * adc.cpp
 *
 *  Created on: 03.10.2014
 *      Author: wn
 */

#include <msp430g2553.h>
#include <stdint.h>
#include <stdlib.h>
#include <stdbool.h>

#include "measure.h"
#include "PontCoopScheduler.h"
#include "displayMuxer.h"
#include "display.h"
#include "gpio.h"


const float R_REF = 3000.0;
const uint16_t N_MAX = 1023;
const float PT1000_R0 = 1000.0;
const float PT1000_Coeff = 3.85e-3;



void measureInit(void *handleArg) {
	ADC10CTL0 = SREF1 | ADC10SHT_3 | ADC10SR | REFOUT | REFON | REF2_5V | ADC10ON;
	ADC10CTL1 = INCH_3;
	ADC10AE0 = BIT3;
}

void measureCollectAndProcessConversion(void *handleArg);

void measureStartConversion(void *handleArg) {
	//gpioSetPin(TESTPIN1, HIGH);
	ADC10CTL0 |= ENC | ADC10SC;
	schAdd(measureCollectAndProcessConversion, NULL, 10, 0);
	//gpioSetPin(TESTPIN1, LOW);
}

void measureCollectAndProcessConversion(void *handleArg) {
	//gpioSetPin(TESTPIN2, HIGH);
	uint16_t n = 0xffff;
	if ((ADC10CTL0 & ADC10IFG) != 0) {
		n = ADC10MEM;
		ADC10CTL0 &= ~(ADC10IFG | ENC);
	}

    // process adcValue
	// store result in variable temperature
	float r = ((((float)N_MAX) / ((float)n)) - 1.0) * R_REF;
	float t = (r / PT1000_R0 - 1) / PT1000_Coeff;

	uint8_t temperature = (uint8_t)t;

	// displaySetValue(temperature);
	displayMuxerSetValue(temperature, true, TEMPERATURE_MUX);
	//gpioSetPin(TESTPIN2, LOW);
}