M5Paper: Detection of touched points.

main.cpp

#include <M5EPD.h>

void setup() {
  M5.begin();
}

void loop() {
  if (!M5.TP.avaliable()) {
    return;
  }

  static int lastFingers = 0;
  M5.TP.update();
  if (!M5.TP.isFingerUp()) {
    if (lastFingers != M5.TP.getFingerNum()) {
      lastFingers = M5.TP.getFingerNum();
      Serial.printf("Fingers: %d\r\n", M5.TP.getFingerNum());
    }
  } else {
    if (lastFingers != 0) {
      Serial.println("Fingers: 0");
      lastFingers = 0;
    }
  }
}