Question

对于我正在进行的项目，我需要将旋转编码器连接到我的Arduino Mega（2560）板。旋转编码器将作为一种非常精确的滚轮来定位我的python代码中的对象。我发现这个Arduino代码非常适合我想要的东西。但是，为了在python中实现编码器读出，我需要“连接”我的输入，我从Arduino板接收到我的Python代码。我试图以某种方式将Arduino代码“转换”为Python代码，并且遇到了 pySerial 和 pyfirmata 的概念，这看起来很有希望。但是，Arduino中的某些函数并未被Python模仿，例如attachInterrupt()函数或volatile unsigned int。

我希望有人能指出我将旋转编码器的以下Arduino代码转换为Python代码的正确方向。

// Encoder connect to digitalpin 2 and 3 on the Arduino.

volatile unsigned int counter = 0;  //This variable will increase or decrease depending on the rotation of encoder

void setup() {
  Serial.begin (9600);
  //Setting up interrupt
  //A rising pulse from encodenren activated ai0(). AttachInterrupt 0 is DigitalPin nr 2 on moust Arduino.
  attachInterrupt(0, ai0, RISING);

  //B rising pulse from encodenren activated ai1(). AttachInterrupt 1 is DigitalPin nr 3 on moust Arduino.
  attachInterrupt(1, ai1, RISING);
}

void loop() {
  // Send the value of counter
  Serial.println (counter);
} 

void ai0() {
  // ai0 is activated if DigitalPin nr 2 is going from LOW to HIGH
  // Check pin 3 to determine the direction
  if(digitalRead(3)==LOW) {
    counter++;
  }else{
    counter--;
  }
}

void ai1() {
  // ai0 is activated if DigitalPin nr 3 is going from LOW to HIGH
  // Check with pin 2 to determine the direction
  if(digitalRead(2)==LOW) {
    counter--;
  }else{
    counter++;
  }
}

创建了2014年作者：Ben-Tommy Eriksen https://github.com/BenTommyE/BenRotaryEncoder

谢谢

通过Arduino连接Rotary Encoder和Python

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