Pin 6

// First test script to verify if the processor/programming is working

// brurn led 6 on port D

#include <avr/io.h>

#include <avr/delay.h>

// define what pins the LEDs are connected to.

// in reality, PD6 is really just '6'

#define LED PD6

#define output_low(port,pin) port &= ~(1<<pin)

#define output_high(port,pin) port |= (1<<pin)

#define set_input(portdir,pin) portdir &= ~(1<<pin)

#define set_output(portdir,pin) portdir |= (1<<pin)

// wait procedure

void delay_ms(uint8_t ms)

{

uint16_t delay_count = F_CPU / 17500;

volatile uint16_t i;

while (ms != 0)

{

for (i=0; i != delay_count; i++);

ms--;

}

}

int main(void) {

// initialize the direction of PORTD #6 to be an output

set_output(DDRD, LED);

while (1)

{

// turn on the LED for 200ms

output_high(PORTD, LED);

delay_ms(200);

// now turn off the LED for another 200ms

output_low(PORTD, LED);

delay_ms(200);

// now start over

}

}