#include <msp430.h>

int ta1_dir;
int ta0_dir;

int main(void)
{
    ADC10CTL1 = INCH_0 + ADC10DIV_3;           // temp sensor
    ADC10CTL0 = SREF_1 + ADC10SHT_3 + REFON + ADC10ON + ADC10IE;
    BCSCTL3 |= LFXT1S_2;                       // ACLK = VLO
    BCSCTL2 |= SELM_3 + SELS;                  //Turning on M clock and SM clock
    WDTCTL = WDT_ADLY_16;                      // WDT 16ms, ACLK, interval timer
    IE1 |= WDTIE;                              // Enable WDT interrupt

    P2DIR |= BIT1 + BIT4;                      // Set P2.1 (B) and P2.4 (G) as output
    P2SEL |= BIT1 + BIT4;                      // Set P2.1 and P2.4 to use timer A1
    P2SEL2 &= ~(BIT1 + BIT4);                  // Set P2.1 and P2.4 to use timer A1

    P1DIR |= BIT2;                             // Set P1.2 (R) as output
    P1SEL |= BIT2;                             // Set P1.2 to use timer A0
    P1SEL2 &= ~BIT2;                           // Set P1.2 to use timer A0

    TA1CCR0 = 10;                              // Set timer A1 CCR0 register as counter ceiling
    TA1CCR1 = 0;                               // (Green) Set timer A1-1 to have a starting duty cycle of 100%
    TA1CCR2 = 0;                               // (BLUE) Set timer A1-2 to have a starting duty cycle of 100%
    TA1CTL  |= MC_1 + TASSEL_1 + ID_1;         // Set timer A1 to count up to CCR0 and use ACKL
    TA1CCTL1 |= OUTMOD_7;                      // Set timer A1-1 to use PWM reset/set mode (off at CCR1-1, on at CCR0)
    TA1CCTL2 |= OUTMOD_7;                      // Set timer A1-2 to use PWM reset/set mode (off at CCR1-2, on at CCR0)

    TA0CCR0 |= 10;                             // Set timer A0 CCR0 register as counter ceiling
    TA0CCR1 |= 0;                              // (RED) Set timer A0 to have a starting duty cycle of 100%
    TA0CTL  |= MC_1 + TASSEL_1 + ID_1;         // Set timer A0 to count up to CCR0 and use ACKL
    TA0CCTL1 |= OUTMOD_7;                      // Set timer A0 to use PWM reset/set mode (off at CCR1, on at CCR0)


while (1) {
                ADC10CTL0 |= ENC + ADC10SC;
                __bis_SR_register(CPUOFF + GIE);

                long temp = ADC10MEM;

                if (temp > 950) //Cold - all blue
                {
                    TA1CCR1 = TA1CCR0;
                    TA1CCR2 = 0;
                    TA0CCR1 = TA0CCR0;
                }
                else if (temp < 750) //Hot - all red
                {
                    TA1CCR1 = TA1CCR0;
                    TA1CCR2 = TA1CCR0;
                    TA0CCR1 = 0;
                }

                else
                {
                    if (temp < 950 && temp > 850)
                    {
                        TA0CCR1 = (int)((0.05*temp)-37.5);     //red
                        TA1CCR2 = (int)((-0.05*temp)+47.5);     //blue
                        TA1CCR1 = (int)((0.1*temp)-85)/2;     //green
                    }
                    else if (temp < 850 && temp > 750)
                    {
                        TA0CCR1 = (int)((0.05*temp)-37.5);     //red
                        TA1CCR2 = (int)((-0.05*temp)+47.5);     //blue
                        TA1CCR1 = (int)((-0.1*temp)+85)/2;     //green
                    }

                __bis_SR_register(LPM3_bits + GIE);
            }
    }
}


// Watchdog Timer interrupt service routine
#pragma vector=WDT_VECTOR
__interrupt void watchdog_timer(void)
    {
        __bic_SR_register_on_exit(LPM3_bits + GIE); // Clear LPM3 bits from SR after exiting
    }

// 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)
}