iLighting

#include<msp430.h>

void init_adc()
{
    ADC10CTL0|=ADC10ON|SREF_0|ADC10SHT_2;
    ADC10CTL1|=INCH_4|SHS_0|ADC10DIV_0|ADC10SSEL_0|CONSEQ_0;
    ADC10AE0=BIT4;
    ADC10CTL0|=ENC;
}
void start()
{
    ADC10CTL0|=ADC10SC;
}

int busy()
{
    return ADC10CTL0 & ADC10BUSY;
}

void delay(int i)
{
    while(i--);
}

void pwm(int d)
{
    P1OUT=0x20;
    delay(d);
    P1OUT=0x00;
    delay(1000-d);
}

main()
{
    init_adc();
    P1DIR=0x20;
    P1OUT=0x00;
    while(1)
    {
        start();
        while(busy());
        if(ADC10MEM>1000)
            P1OUT=0x20;
        else if(ADC10MEM>950)
            pwm(950);
        else if(ADC10MEM>900)
            pwm(900);
        else if(ADC10MEM>850)
            pwm(850);
        else if(ADC10MEM>800)
            pwm(800);
        else if(ADC10MEM>700)
            pwm(750);
        else if(ADC10MEM>650)
            pwm(700);
        else if(ADC10MEM>600)
            pwm(650);
        else if(ADC10MEM>550)
            pwm(600);
        else if(ADC10MEM>500)
            pwm(550);
        else if(ADC10MEM>450)
            pwm(500);
        else if(ADC10MEM>400)
            pwm(450);
        else if(ADC10MEM>350)
            pwm(400);
        else if(ADC10MEM>300)
            pwm(350);
        else if(ADC10MEM>250)
            pwm(300);
        else if(ADC10MEM>200)
            P1OUT=0x00;
        delay(1000);
    }
}