#define CLK_PIN 2
#define DT_PIN 3
#define SW_PIN 4
int position = 0;
int last_position = 0;
int n = 0;
bool taster = LOW;
bool last_taster = LOW;
void setup() {
pinMode(CLK_PIN, INPUT_PULLUP);
pinMode(DT_PIN, INPUT_PULLUP);
pinMode(SW_PIN, INPUT_PULLUP);
Serial.begin(9600);
}
void loop() {
n = digitalRead(CLK_PIN);
taster = !digitalRead(SW_PIN);
if(taster != last_taster) {
Serial.print(position);
Serial.print("|");
Serial.println(taster);
delay(10);
last_taster = taster;
}
// one tab
if((last_position == 0) && (n == HIGH)) {
if(digitalRead(DT_PIN) == LOW) {
position++;
} else {
position--;
}
Serial.print(position);
Serial.print("|");
Serial.println(taster);
}
last_position = n;
}
ky-040_rotary_encoder_module_eng.pdf