Dual channel driver test

#define F_CPU 4800000UL

#include <avr/io.h>
#include <util/delay.h>

#define LED_LOW_PIN   PB0
#define LED_HIGH_PIN  PB1

int main(void)
{
    // set the two AMC7135 channels as output
    DDRB = (1 << LED_LOW_PIN) | (1 << LED_HIGH_PIN);

    // loop forever
    while(1) {
        PORTB = (1 << LED_LOW_PIN); // Low channel on
        _delay_ms(3000); // wait 3 seconds

        PORTB = (1 << LED_HIGH_PIN); // High channel on
        _delay_ms(3000); // wait 3 seconds

        PORTB = (1 << LED_LOW_PIN) | (1 << LED_HIGH_PIN); // Both channels on
        _delay_ms(3000); // wait 3 seconds
    }

    return 0; // Standard Return Code
}