80 lines
1.6 KiB
C++
80 lines
1.6 KiB
C++
/*
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Copyright (c) 2017 wind-rider
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See the readme for credit to other people.
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Surface dial example
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Use an encoder and a button. See the connection diagram how to wire it up.
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The encoder processing code is coming from https://www.allwinedesigns.com/blog/pocketnc-jog-wheel
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*/
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#include "HID-Project.h"
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// input pins for encoder channel A and channel B
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int pinA = 2;
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int pinB = 3;
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// input pin for pushbutton
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int pinButton = 4;
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volatile bool previousButtonValue = false;
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volatile int previous = 0;
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volatile int counter = 0;
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void setup() {
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pinMode(pinA, INPUT_PULLUP);
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pinMode(pinB, INPUT_PULLUP);
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pinMode(pinButton, INPUT_PULLUP);
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attachInterrupt(digitalPinToInterrupt(pinA), changed, CHANGE);
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attachInterrupt(digitalPinToInterrupt(pinB), changed, CHANGE);
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SurfaceDial.begin();
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}
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void changed() {
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int A = digitalRead(pinA);
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int B = digitalRead(pinB);
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int current = (A << 1) | B;
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int combined = (previous << 2) | current;
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if(combined == 0b0010 ||
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combined == 0b1011 ||
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combined == 0b1101 ||
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combined == 0b0100) {
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counter++;
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}
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if(combined == 0b0001 ||
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combined == 0b0111 ||
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combined == 0b1110 ||
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combined == 0b1000) {
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counter--;
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}
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previous = current;
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}
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void loop(){
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bool buttonValue = digitalRead(pinButton);
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if(buttonValue != previousButtonValue){
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if(buttonValue) {
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SurfaceDial.press();
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} else {
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SurfaceDial.release();
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}
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previousButtonValue = buttonValue;
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}
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if(counter >= 4) {
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SurfaceDial.rotate(10);
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counter -= 4;
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} else if(counter <= -4) {
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SurfaceDial.rotate(-10);
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counter += 4;
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}
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}
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