24 lines
445 B
C
24 lines
445 B
C
#include <avr/io.h>
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#include <util/delay.h>
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int main(void) {
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#if defined(DDRC) && defined(DDRD)
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#define BITS 8
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DDRC = 0x3f;
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DDRD = DDRB = 0xff;
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#else
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#define BITS 6
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DDRB = 0x3f;
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#endif
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for (;;) {
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for (uint8_t i = 0; i < BITS; ++i) {
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#if defined(DDRC) && defined(DDRD)
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PORTC = (PORTD = PORTB ^= _BV(i))&0x3f;
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#else
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PORTB ^= _BV(i);
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#endif
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_delay_ms(36);
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}
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}
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return 0;
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} |