在我的RGB-条形驱动程序代码中的意外行为

Question

我在引脚9，10和11上输出错误。它们是我的RGB驱动电路的输入。它基本上是一个NPN晶体管阵列，从带材中拉出电流。

其基本思想是只需2个控件来设置R、G、B和亮度。我用的是按钮和测压仪。测斜仪用于设置值，并将按钮跳到下一个值设置。有一个设置状态，类似于默认的设置状态。这是一个设置亮度，我将使用这大部分时间。othe是用来设置颜色的，当其中一个设置时，条子将在我当前设置的颜色和alle三种颜色设置的结果之间闪烁。在我添加亮度设置之前，整个代码都运行得很好，我认为我有点迷失在自己的代码中。

我甚至添加了一个序列来读取输出，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中：

pinMode(buttonPin , INPUT);

第二，当setting==3的时候你期望什么？您没有重新加载/更新brightR brightG brightB的变量。所以，当你改变setting时，你会失去亮度的变化。