29 lines
584 B
C
29 lines
584 B
C
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/*
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* Hello world of AVR. Blink led PORTB5 (Arduino digital 13).
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*
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* To compile and upload run: make clean; make; make program;
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*
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* Copyright 2009-2011 Mika Tuupola
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*
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* Licensed under the MIT license:
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* http://www.opensource.org/licenses/mit-license.php
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*
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*/
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#include <avr/io.h>
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#include <util/delay.h>
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int main(void)
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{
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/* Make PORTB5 (Arduino pin 13) an output. */
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DDRB |= _BV(PORTB5);
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for(;;){
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/* Toggle state of PORTB5 (Arduino pin 13). */
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PORTB ^= _BV(PORTB5);
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_delay_ms(500);
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}
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/* Never reached. */
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return 0;
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}
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