74 lines
2 KiB
C
Executable file
74 lines
2 KiB
C
Executable file
/* ========================================================================== */
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/* */
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/* Filename.c */
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/* (c) 2001 Author */
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/* */
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/* Description */
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/* */
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/* ========================================================================== */
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#include <avr/io.h>
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#include <avr/sleep.h>
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#include <avr/interrupt.h>
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uint8_t pina;
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uint8_t pinb;
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ISR(PCINT0_vect){
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uint8_t difa = (pina ^ PINA) & PINA;
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uint8_t difb = (pinb ^ PINB) & PINB;
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if (difa == 1) {
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// S1 gedrückt -> aktiviere Blau ?
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PORTB = PORTB ^ 4;
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} else if (difa == 2) {
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// S2 gedrückt -> aktiviere ??
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PORTA = PORTA ^ 128;
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} else if (difa == 4) {
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// S3 gedrückt -> aktiviere ??
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PORTA = PORTA ^ 64;
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} else if (difa == 8) {
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// S4 gedrückt -> alle an
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PORTA |= (1 << PORTA6) | (1 << PORTA7);
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PORTB |= (1 << PORTB2);
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} else if (difb == 1 || difb == 2) {
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// S5 oder S6 gedrückt -> alle aus
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PORTA = (1 << PORTA4) | (1 << PORTA5);
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PORTB = (1 << PORTB3);
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}
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pina = PINA;
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pinb = PINB;
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}
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// Set fuses for 8MHz internal clock with slow rising power
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FUSES =
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{
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.low = (FUSE_SUT1 & FUSE_CKSEL3 & FUSE_CKSEL2 & FUSE_CKSEL0),
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.high = FUSE_SPIEN,
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.extended = EFUSE_DEFAULT
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};
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int main() {
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// Set A7, A6 and B2 as output
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DDRA = (1 << DDA7) | (1 << DDA6);
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DDRB = (1 << DDB2);
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PORTB = 0;
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PORTA = 0;
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pina = PINA;
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pinb = PINB;
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// Enable Pin Change Interrupts for switches
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GIMSK = (1 << PCIE1) | (1 << PCIE0);
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PCMSK0 = (1 << PCINT0) | (1 << PCINT1) | (1 << PCINT2) | (1 << PCINT3);
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PCMSK1 = (1 << PCINT8) | (1 << PCINT9);
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sei();
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while (1) {
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sleep_enable();
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}
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return 0;
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}
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