#include  "msp430g2253.h"
#include <stdbool.h>
//timed interrupt every 10 seconds
//check how many heartbeats
//x6
//send as display value
//reset hb counter to 0




// Variables
int adc[1] = {0}; //Sets up an array of 10 integers and zero's the values
int adcstore[100] = {0};
int avg_adc = 0;

// Function prototypes
void adc_Setup();
void adc_Sam10();

int timercount = 0;
int heartbeatcount = 0;
int displayValue = 0;

void main()
{
    int i = 0;
    bool beat = false;
      WDTCTL = WDTPW + WDTHOLD;         // Stop WDT
      adc_Setup();                      // Function call for adc_setup

      while(1)
      {
          adc_Sam10();      // Function call for adc_samp
          if(adc[0] > 730 && !beat) {
              heartbeatcount++;
              beat = true;
          }
          if(adc[0] <= 630 && beat) {
              beat = false;
          }
//          _delay_cycles(100000);
      }
}

// ADC10 interrupt service routine
#pragma vector=ADC10_VECTOR
__interrupt void ADC10_ISR(void)
{
  __bic_SR_register_on_exit(CPUOFF);        // Clear CPUOFF bit from 0(SR)
}

// ADC set-up function
void adc_Setup()
{
    ADC10CTL1 = CONSEQ_2 + INCH_0;                      // Repeat single channel, A0
    ADC10CTL0 = ADC10SHT_2 + MSC + ADC10ON + ADC10IE;   // Sample & Hold Time + ADC10 ON + Interrupt Enable
    ADC10DTC1 = 0x01;                                  // 100 conversions
    ADC10AE0 |= 0x01;                                   // P1.0 ADC option select
    CCTL0 = CCIE;                             // CCR0 interrupt enabled
    TACTL = TASSEL_2 + MC_1 + ID_3;           // SMCLK/8, upmode
    CCR0 =  62500;                           // 0.5 Hz
}

// ADC sample conversion function
void adc_Sam10()
{
    ADC10CTL0 &= ~ENC;              // Disable Conversion
    while (ADC10CTL1 & BUSY);       // Wait if ADC10 busy
    ADC10SA = (int)adc;             // Transfers data to next array (DTC auto increments address)
    ADC10CTL0 |= ENC + ADC10SC;     // Enable Conversion and conversion start
//    __bis_SR_register(CPUOFF + GIE);// Low Power Mode 0, ADC10_ISR
    __bis_SR_register(GIE);// Low Power Mode 0, ADC10_ISR

}

#pragma vector=TIMER0_A0_VECTOR
__interrupt void Timer_A (void)
{
    timercount++;
    if(timercount >= 20) {
        displayValue = heartbeatcount * 6;
        heartbeatcount = 0;
        timercount = 0;
    }
}