#include <M5Dial.h>

int setTemp = 220;
long lastPosition = -999;

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

  Serial.begin(115200);
  Serial1.begin(115200, SERIAL_8N1, 13, 15); // RX, TX

  M5Dial.Encoder.write(setTemp);

  M5Dial.Display.setTextColor(GREEN);
  M5Dial.Display.setTextDatum(middle_center);
  M5Dial.Display.setTextSize(3);
  M5Dial.Display.fillScreen(BLACK);

  Serial.println("M5Dial ASFALT temperature sender ready");
}

void loop() {
  M5Dial.update();

  long position = M5Dial.Encoder.read();

  if (position != lastPosition) {
    lastPosition = position;
    setTemp = constrain(position, 50, 350);

    String msg = "TEMP:" + String(setTemp);

    Serial.println(msg);    // USB debug
    Serial1.println(msg);   // UART to Barduino

    M5Dial.Display.fillScreen(BLACK);
    M5Dial.Display.drawString(
      String(setTemp) + " C",
      M5Dial.Display.width() / 2,
      M5Dial.Display.height() / 2
    );
  }

  if (M5Dial.BtnA.wasPressed()) {
    M5Dial.Encoder.write(220);
  }
}