Contoh penggunaan rotary encoder

oleh StufiMedia Tinggalkan komentar »

#include <avr/io.h>

#define PIN_A (PINB&1)
#define PIN_B ((PINB>>1)&1)

int main(void){
uint8_t st0 = 0;
uint8_t st1 = 0;
uint8_t dir = 0;
uint8_t temp = 0;
uint8_t counter = 0;
DDRD = 0xFF;
DDRB = 0;
while(1){
if(dir == 0){
if(PIN_A & (!PIN_B)){
dir = 2;
}else if(PIN_B & (!PIN_A)){
dir = 4;
}else{
dir = 0;
}
}else if(dir == 2){
if(PIN_A & (!PIN_B)){
dir = 2;
}else if((!PIN_A) & (!PIN_B)){
counter–;
dir = 0;
}else{
dir = 0;
}
}else if(dir == 4){
if(PIN_B & (!PIN_A)){
dir = 4;
}else if((!PIN_A) & (!PIN_B)){
counter++;
dir = 0;
}else{
dir = 0;
}
}else if(PIN_B & PIN_A){
dir = 0;
}
PORTD = ~counter;
}
return 0;
}

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