新手求助:用解碼器加一個按鍵控制2個LED

noob

不好意思第一次在此發問,我在試作Arduino用解碼器加一個按鍵來控制2個LED,
目前程式2個led只會跟1個val變數跑,led0的val變數會帶給led1,這不是我要的結果,
請問有辦法把一組val變成兩組獨立變數嗎?例如val0,val1.可能是陣列或MAP類似概念.
或是判斷何時為val新值,舊值,運算並套用各自LED.這些部份我真的是不會.
我想讓encoder"單獨"控制led0Pin跟led1Pin.比方說,轉encoder調整led0Pin亮度,
按下按鍵控制切換到led1Pin,轉encoder調整led1Pin亮度,再按按鍵回到led0Pin.如此類推.
請各位幫忙.感謝.

1. #include <RotaryEncoder.h>   // 從這來的. https://code.google.com/p/arduino-rotary-encoder-with-velocity/
   
2. int val =0;
   
3. int x=0;
   
4. RotaryEncoder encoder(A2,A3,5,6,3000);  //解碼器腳位 A_A2,B_A3
   
5. const int buttonPin = 2;   
   
6. const int switch_ledPin = 13;
   
7. int led0Pin = 5;
   
8. int led1Pin = 6;
   
9. int button_state = HIGH;
   
10. unsigned long int previous_time = 0;
    
11. 
    
12. void switch_led_state() {
    
13.     if(digitalRead(switch_ledPin) == LOW) digitalWrite(switch_ledPin, HIGH);
    
14.     else digitalWrite(switch_ledPin, LOW);
    
15.     Serial.print(String("Switching after ") + (millis() - previous_time) + String(" milliseconds\n"));
    
16.     previous_time = millis();
    
17.     }
    
18.    
    
19.    
    
20. void setup() {  
    
21.     pinMode(buttonPin, INPUT_PULLUP);
    
22.     pinMode(switch_ledPin, OUTPUT);
    
23.     pinMode(led0Pin, OUTPUT);
    
24.     pinMode(led1Pin, OUTPUT);
    
25.     digitalWrite(switch_ledPin, LOW);
    
26.     Serial.begin(9600) ;
    
27.     }
    
28.    
    
29. 
    
30. 
    
31. void loop() {
    
32.    if(digitalRead(buttonPin) == LOW) {
    
33.         if(button_state != LOW) switch_led_state();
    
34.         button_state = LOW;
    
35.     } else button_state = HIGH;
    
36.    
    
37.    int enc = encoder.readEncoder();
    
38.    int changevalue = 1;
    
39.    if(enc != 0) {
    
40.     val = val + (enc);
    
41.     val = min(val,255);
    
42.     val = max(val,0);
    
43.     Serial.println(val);
    
44.    }
    
45.    delayMicroseconds(5);
    
46.    if (digitalRead (switch_ledPin)==LOW)
    
47.    x=1;
    
48.    if (digitalRead (switch_ledPin)==HIGH)
    
49.    x=2;
    
50.    switch (x){
    
51.    case 1:
    
52.    analogWrite(led0Pin,(val));
    
53.    break;
    
54.    case 2:
    
55.    analogWrite(led1Pin,(val));
    
56.    break;
    
57.    }
    
58.    }
    

複製代碼