CrispyPin/rotary-kb
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Crispy 2022-05-16 16:44:44 +02:00
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src/main.cpp Normal file
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#include <Arduino.h>
#define PIN_BTN 5
#define PIN_A 11 // Connected to CLK
#define PIN_B 8 // Connected to DT
int rotation = 0;
int prev_a;
int prev_btn;
//#define DEBUG
void setup() {
pinMode (PIN_A, INPUT);
pinMode (PIN_B, INPUT);
pinMode (PIN_BTN, INPUT_PULLUP);
prev_a = digitalRead(PIN_A);
prev_btn = digitalRead(PIN_BTN);
Serial.begin(9600);
}
void loop() {
// debug_signal();
int a = digitalRead(PIN_A);
int btn = digitalRead(PIN_BTN);
if (a != prev_a){ // Means the knob is rotating
if (digitalRead(PIN_B) != a) { // Means pin A Changed first - We're Rotating Clockwise
rotation++;
#ifdef DEBUG
Serial.print("CW ");
#endif
} else {// Otherwise B changed first and we're moving CCW
rotation--;
#ifdef DEBUG
Serial.print("CCW ");
#endif
}
#ifdef DEBUG
Serial.print("pos: ");
#endif
Serial.println(rotation);
}
if (btn != prev_btn) {
Serial.print("btn.");
Serial.println(btn);
}
prev_btn = btn;
prev_a = a;
}
// void debug_signal() {
// int a = digitalRead(PIN_A);
// int b = digitalRead(PIN_B);
// if (a != prev_a || b != prev_b) {
// if (a) {
// if (b) {
// Serial.print("█");
// }
// else {
// Serial.print("▀");
// }
// }
// else {
// if (b) {
// Serial.print("▄");
// }
// else {
// Serial.print(" ");
// }
// }
// }
// prev_a = a;
// prev_b = b;
// if (digitalRead(5) == LOW) {
// Serial.println("");
// delay(100);
// }
// }