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20 lines
351 B
C
20 lines
351 B
C
#include <avr/io.h>
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#include <util/delay.h>
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#define BLINK_DELAY_MS 4000
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int main (void)
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{
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/* set pin 4 of PORTB for output*/
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DDRB |= _BV(DDB4);
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while(1) {
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/* set pin 4 high to turn led on */
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PORTB |= _BV(PORTB4);
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_delay_ms(BLINK_DELAY_MS);
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/* set pin 4 low to turn led off */
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PORTB &= ~_BV(PORTB4);
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_delay_ms(BLINK_DELAY_MS);
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}
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} |