我的 RGB 条驱动程序代码中出现异常行为

Question

我在引脚 9、10 和 11 上得到了错误的输出。它们应该是我的 RGB 条驱动器电路的输入。这基本上是一组 NPN 晶体管从条带中拉动电流。

基本思路是只获得 2 个控件来设置 R、G、B 和亮度。我正在使用一个按钮和一个电位计。电位器用于设置值，按钮用于跳到下一个值设置。有一种设置状态类似于默认状态。它是用来设置亮度的，我大部分时间都会使用它。其他用于设置颜色，当在其中一个设置中时，条带将仅在我当前设置的颜色和设置了所有三种颜色的结果之间闪烁。在我添加亮度设置之前，整个代码工作得很好，我觉得我有点迷失在自己的代码中。

我什至添加了一个序列号来读取输出，但我不明白为什么数字是这样的:(

  int pinR = 9;
  int pinG = 10;
  int pinB = 11;
  int potPin = A0;
  const int buttonPin = 2;

  int brightR = 0;
  int brightG = 0;
  int brightB = 0;
  int brightness = 50; //

  int R;
  int G;
  int B;

  int potValue = 0;

  int blinky = 0;
  boolean blinking = false;

  int buttonState;
  int lastButtonState = LOW;
  long lastDebounceTime = 0;
  long debounceDelay = 50;

  int setting = 0; //0=R 1=G 2=B 3=Brightness

  void setup() {
    // put your setup code here, to run once:
    pinMode(pinR, OUTPUT);
    pinMode(pinG, OUTPUT);
    pinMode(pinB, OUTPUT);

    Serial.begin(9600);
  }

  void RGBset(int r, int g, int b){
      analogWrite(pinR, r);
      analogWrite(pinG, g);
      analogWrite(pinB, b);
    }

  void loop() {
    // put your main code here, to run repeatedly:
    potValue = analogRead(potPin);
    potValue = map(potValue, 0, 1023, 0, 255); //read pot --> map to values from 0 - 255

    int reading = digitalRead(buttonPin);

    if (reading != lastButtonState) {

      lastDebounceTime = millis();
    }

    if ((millis() - lastDebounceTime) > debounceDelay) {

      if (reading != buttonState) {
        buttonState = reading;

        if (buttonState == HIGH) {
          setting++;
        }
      }
    }

    lastButtonState = reading;

    if(setting > 3){  // 0=R 1=G 2=B 3=Brightness
      setting = 0;    // cant get 4 cause there is no 4
    }

    if(setting == 0){
      brightR = potValue;
      if(blinking){
        RGBset(brightR, brightG, brightB);
      }else{
        RGBset(brightR, 0, 0);
      }
    }

    if(setting == 1){
      brightG = potValue;
      if(blinking){
        RGBset(brightR, brightG, brightB);
      }else{
        RGBset(0, brightG, 0);
      }
    }

    if(setting == 2){
      brightB = potValue;
      if(blinking){
        RGBset(brightR, brightG, brightB);
      }else{
        RGBset(0, 0, brightB);
      }
    }

    if(setting == 3){
      brightness = potValue;
      brightness = map(brightness, 0, 255, 1, 100);  //mapping brightness to values from 1 - 100
      R = brightR * brightness / 100;                //set value * brightness / 100 
      G = brightG * brightness / 100;                //that leads to get % of set value
      B = brightB * brightness / 100;                //255 * 50 / 100 = 127,5 ==> 128
      RGBset(R, G, B);                               //it wont blink in thiss setting
    }

    if(setting != 3){
      blinky++;
      if(blinky > 1000){
        blinking = !blinking;
        blinky = 0;
      }
    }

    String output = (String(brightR) + " " + String(R) + " " + String(brightG) + " " + String(G) + " " + String(brightB) + " " + String(B) + " " + String(brightness) + " " + String(potValue) + " " + String(blinking)); 
    Serial.println(output);

    delay(1);
  }

Answer 1

首先，在setup：

pinMode(buttonPin , INPUT);

其次，setting==3你期待什么？你不是 reloading/updating brightR brightG brightB 的变数。所以，当你改变setting时，你将失去亮度的改变

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