#include "msp430g2553.h"
#include <in430.h>
#include "main.h"

static const int timer_A = 1600;
int testdata[200];
volatile unsigned int update = 0; //incremented with adc
volatile unsigned int updatetd = 0;

int main( void )
{
	WDTCTL = WDTPW + WDTHOLD;
	setupGPIO(); //setup the pins
	setupTimer_A(); //setup timer A
	setupADC(); //setup the ADC
	TA0CTL |= MC_1;
	__enable_interrupt(); //enable interrupts

	while(1)
	{
		ADC10CTL0 |= ENC + ADC10SC; //enable and start conversion of ADC samples
		while((ADC10CTL1 & ADC10BUSY));	//wait until conversion is done
		if(update > 0) {
			//////Toggle pin to determine ADC rate
			P2OUT ^= BIT0;
			update = 0; //turn off update
			}
		}
}
//----------------------INTERRUPTS----------------------

//Timer A interrupt for saving adc values(80 Hz)
#pragma vector=TIMER0_A0_VECTOR
__interrupt void Timer_A( void )
{
	update= 1;//turn on update
	testdata[updatetd]=ADC10MEM;
	updatetd++;
}

//----------------------FUNCTIONS----------------------
void setupGPIO( void )
{

	//Pins for checking rates
	//P2.0 for length of main loop
	P2SEL &= ~BIT0;
	P2DIR |= BIT0;
	P2OUT &= ~BIT0; //turn off
}

//Timer A is for saving adc values at 80 Hz
void setupTimer_A( void )
{
	TA0CTL = TASSEL_2 + ID_3 + MC_0 + TACLR; //source from SMCLK, divide by 8, keep the timer off initially, clear the timer
	TA0CCTL0 = CCIE; //capture/compare interrupt enabled
	TA0CCR0 = timer_A; //Timer A to trigger at 80 Hz
}
//ADC is for sampling P1.1
void setupADC( void )
{
	ADC10CTL0 = ADC10SHT_3 + SREF_1 + REF2_5V + REFON + ADC10ON;
	ADC10CTL1 = INCH_1;
	ADC10AE0 |= BIT1;
	P1SEL |= BIT1;
}