added M5Stack Core2 exmaple

CHANGELOG.md

@@ -3,6 +3,8 @@
 ## Unreleased 
 - **Note:** Unreleased changes are checked in but not part of an official release (available through the Arduino IDE or PlatfomIO) yet. This allows you to test WiP features and give feedback to them.
 -
+## [2.0.3] - 2022-05-21
+- Added example for the [M5Stack Core2](https://github.com/LennartHennigs/Button2/blob/master/examples/M5StackCore2CustomHandler/M5StackCore2CustomHandler.ino) - showing how to add a custom handler for the touch buttons
 
 ## [2.0.1] - 2022-04-22
 - Fixed bug – `longclick_detected_counter` is not properly initalized as mentioned in [#37](https://github.com/LennartHennigs/Button2/pull/37)

examples/M5StackCore2CustomHandler/M5StackCore2CustomHandler.ino

@@ -0,0 +1,97 @@
+#include "M5Core2.h"
+#include "Button2.h"
+
+/////////////////////////////////////////////////////////////////
+
+Button2 button;
+bool cleared = false;
+
+/////////////////////////////////////////////////////////////////
+byte myButtonStateHandler() {
+  return !(M5.BtnA.isPressed());
+}
+
+/////////////////////////////////////////////////////////////////
+
+void setup() {
+  M5.begin(); 
+
+  button.setDoubleClickTime(300);
+
+//  button.setChangedHandler(changed);
+//  button.setPressedHandler(pressed);
+  button.setReleasedHandler(released);
+
+//  button.setTapHandler(tap);
+  button.setClickHandler(click);
+  button.setLongClickDetectedHandler(longClickDetected);
+//  button.setLongClickHandler(longClick);
+
+  button.setDoubleClickHandler(doubleClick);
+  button.setTripleClickHandler(tripleClick);
+
+  button.setButtonStateFunction(myButtonStateHandler);
+  button.begin(VIRTUAL_PIN);
+
+  M5.Lcd.clear();
+  M5.Lcd.setTextSize(2);
+  M5.Lcd.setTextWrap(true, true);
+  M5.Lcd.print("Button A Test");
+  M5.Lcd.print("\n");
+  M5.Lcd.print("\n");
+}
+
+void loop() {
+  button.loop();
+  // clear screen if wrap happened
+  if (M5.Lcd.getCursorY() <= 16) {
+    if (!cleared) {
+      M5.Lcd.clear();
+      Serial.println("now");
+      cleared = true;
+    }
+  } else {
+    cleared = false;
+  } 
+  M5.update(); 
+}
+
+/////////////////////////////////////////////////////////////////
+
+void pressed(Button2& btn) {
+    M5.Lcd.print("pressed");
+    M5.Lcd.print("\n");
+}
+void released(Button2& btn) {
+    M5.Lcd.print("released: ");
+    M5.Lcd.print(btn.wasPressedFor());
+    M5.Lcd.print("\n");
+}
+void changed(Button2& btn) {
+    M5.Lcd.print("changed");
+    M5.Lcd.print("\n");
+}
+void click(Button2& btn) {
+    M5.Lcd.print("click");
+    M5.Lcd.print("\n");
+}
+void longClickDetected(Button2& btn) {
+    M5.Lcd.print("long click detected");
+    M5.Lcd.print("\n");
+}
+void longClick(Button2& btn) {
+    M5.Lcd.print("long click");
+    M5.Lcd.print("\n");
+}
+void doubleClick(Button2& btn) {
+    M5.Lcd.print("double click");
+    M5.Lcd.print("\n");
+}
+void tripleClick(Button2& btn) {
+    M5.Lcd.print("triple click\n");
+    M5.Lcd.print("\n");
+}
+void tap(Button2& btn) {
+    M5.Lcd.print("tap");
+    M5.Lcd.print("\n");
+}