Spinning Thing source code for PIC16F684 microcontrollers compiling with MikroC. See  for a picture!

spin.c

/*
Anthony Zhang
Spinning Thing source code for PIC16F684 microcontrollers compiling with MikroC.
*/

#define PIN1 PORTA.RA0
#define PIN2 PORTA.RA1
#define PIN3 PORTA.RA2
#define PIN4 PORTC.RC0
#define PIN5 PORTC.RC1
#define PIN6 PORTC.RC2

char values[] = {
    0b111111,
    0b001100,
    0b111111,
    0b000000,
    0b111111,
    0b101101,
    0b101101,
    0b000000,
    0b111111,
    0b110000,
    0b110000,
    0b000000,
    0b111111,
    0b110000,
    0b110000,
    0b000000,
    0b111111,
    0b110011,
    0b111111,
};
int index = 0;

void main() {
    CMCON0 = 0b111; // comparator configuration
    ANSEL = 0; // use digital I/O

    TRISA = 0x00; // PORTA as output
    TRISC = 0x00; // PORTC as output

    while (1) {
        if (index == sizeof(values))
            index = 0;
        if (index == 0) {
            PIN1 = PIN2 = PIN3 = PIN4 = PIN5 = PIN6 = 0;
            delay_ms(40);
        }
        PIN1 = values[index] & 1;
        PIN2 = (values[index] >> 1) & 1;
        PIN3 = (values[index] >> 2) & 1;
        PIN4 = (values[index] >> 3) & 1;
        PIN5 = (values[index] >> 4) & 1;
        PIN6 = (values[index] >> 5) & 1;
        index ++;
        delay_ms(3);
    }
}