AUTOMATIC CHASER WITH SPEED CONTROL

MICROCONTROLLER — MSP430G2553

int b;
void setup() {        
    pinMode(P1_6, OUTPUT);
    pinMode(P1_7, OUTPUT);
}
void loop() {
    b=10000/(analogRead(A3)+1);
    for(int a=0;a<b;a++)
    {
        b=10000/(analogRead(A3)+1);
        digitalWrite(P1_6, HIGH);    digitalWrite(P1_7, LOW);
        delay(b);                    

        digitalWrite(P1_6, LOW); digitalWrite(P1_7, HIGH);   

        delay(b);
    }
    b=10000/(analogRead(A3)+1);
    for(int a=0;a<b;a++)
    {
        b=10000/(analogRead(A3)+1);
        digitalWrite(P1_6, HIGH);    digitalWrite(P1_7, HIGH);
        delay(b);                    

        digitalWrite(P1_6, LOW); digitalWrite(P1_7,LOW);   

        delay(b);
    }
    digitalWrite(P1_6, LOW); digitalWrite(P1_7, LOW);
    delay(2000);
}