Encoder Volume Control

1#include <HID-Project.h>
2#include <HID-Settings.h>
3
4#define REVERSED  false //if your controller is reversed change it to true
5
6#define CLK 4
7#define  DT 5
8#define SW 3
9
10int volume = 0;
11int currentStateCLK;
12int lastStateCLK;
13unsigned  long lastButtonPress = 0;
14
15void setup() {
16	
17	pinMode(CLK,INPUT);
18	pinMode(DT,INPUT);
19	pinMode(SW,  INPUT_PULLUP);
20
21
22	lastStateCLK = digitalRead(CLK); //CLK value
23}
24
25void  loop() {
26	
27	currentStateCLK = digitalRead(CLK); //CLK current value
28  
29  if (currentStateCLK != lastStateCLK  && currentStateCLK == 1){  //CLK change  && CLK only 1state change
30
31		if (digitalRead(DT) != currentStateCLK) { //Encoder  CCW Rotation
32      Consumer.write(MEDIA_VOLUME_UP); //Volume Up
33      volume++;
34      delay(2);
35
36		} else {			// Encoder CW Rotation
37      Consumer.write(MEDIA_VOLUME_DOWN);  //Volume Down
38      volume--
39      ;
40      delay(2);
41		}
42
43	}
44
45	lastStateCLK  = currentStateCLK; // Last CLK Value
46
47		int btnState = digitalRead(SW);  // Button Value
48
49		if (btnState == LOW) { // Switch pushed
50
51    if  (millis() - lastButtonPress > 50) { // Over 50ms
52    Consumer.write(MEDIA_VOLUME_MUTE);
53		}
54    lastButtonPress = millis();
55	}
56
57	delay(1); // Push swithc delay
58}