Rotary encoder menu system

Projects Programming
6

This is the code I can get to work.

Rotary encoder part:

// Rotary encoder variables
const byte inputCLK = 3; // Arduino pin the rotary encoder CLK pin is connected to.
const byte inputDT = 2; // Arduino pin the rotary encoder DT pin is connected to.
int currentStateCLK; // Current state of rotary encoder pin CLK. Used to identify rotation.
int previousStateCLK; // Current state of rotary encoder pin CLK. Used to identify rotation.
boolean encCCW; // Flag that the encoder has been rotated counter-clockwise one step.
boolean encCW; // Flag that the encoder has been rotated clockwise one step.

void setup() {


  // Set encoder and push button pins as inputs.
  pinMode (inputCLK, INPUT);
  pinMode (inputDT, INPUT);

  encCCW = 0; // Initial state for rotation flag not rotated.
  encCW = 0; // Initial state for rotation flag not rotated.

  // Read initial state of rotary encoder CLK pin. Assign to previousStateCLK so we can check for state changes when the loop begins.
  previousStateCLK = digitalRead(inputCLK);

  // Setup Serial Monitor
  Serial.begin (9600);

}

void loop() {

  //This code must go at the start of the loop.

  // Read the current state of inputCLK so we can compare it.
  currentStateCLK = digitalRead(inputCLK);

  // Rotary encoder code.
  if (currentStateCLK != previousStateCLK) { // If the previous and the current state of inputCLK are different, then the encoder and been rotated.
    if (currentStateCLK != digitalRead(inputDT)) { // If the inputCLK state is different than the inputDT state then the rotation is counterclockwise.
      encCCW = 1; // set rotation flag high.
    }
    else {
      // Encoder is not rotating CCW
      encCW = 1;
    }
  }


  //This is the middle of the loop. Do stuff with encCCW and encCW here.
  // Serial print that the encoder has been rotated.
  if (encCCW == 1) {
    Serial.println("Counter-clockwise");
  }
  if (encCW == 1) {
    Serial.println("Clockwise");
  }

  //This code must go at the end of the loop to reset the encoder variables for the next time around.

  previousStateCLK = currentStateCLK; // Update previousStateCLK with the current state
  encCCW = 0; // Reset encCCW.
  encCW = 0; // Reset encCW.
}

I just tested my basic button code and it's not working :stuck_out_tongue: I must have screwed something up, as it was working before! I'll get back to you!