Dial Encoder 旋转编码器

#include "M5Dial.h"

long oldPosition = -999;

void setup() {
  auto cfg = M5.config();
  M5Dial.begin(cfg, true, false);  // encoder, RFID

  M5Dial.Display.setTextColor(GREEN);
  M5Dial.Display.setTextDatum(middle_center);
  M5Dial.Display.setTextFont(&fonts::Orbitron_Light_32);
  M5Dial.Display.setTextSize(2);
}

void loop() {
  M5Dial.update();

  long newPosition = M5Dial.Encoder.read();
  if (newPosition != oldPosition) {
    M5Dial.Speaker.tone(8000, 20);
    M5Dial.Display.clear();
    M5Dial.Display.drawString(String(newPosition),
                              M5Dial.Display.width() / 2,
                              M5Dial.Display.height() / 2);
    oldPosition = newPosition;
  }

  if (M5Dial.BtnA.wasPressed()) {
    M5Dial.Encoder.readAndReset();
  }
  if (M5Dial.BtnA.pressedFor(5000)) {
    M5Dial.Encoder.write(100);
  }
}