Add button continuous long press method

Author: EeeeBin

examples/Basics/Button/Button.ino

@@ -34,11 +34,11 @@ void loop() {
   M5.update();
 
   // if you want to use Releasefor("was released for"), use .wasReleasefor(int time) below
-  if (M5.BtnA.wasReleased()) {
+  if (M5.BtnA.wasReleased() || M5.BtnA.pressedFor(1000, 200)) {
     M5.Lcd.print('A');
-  } else if (M5.BtnB.wasReleased()) {
+  } else if (M5.BtnB.wasReleased() || M5.BtnB.pressedFor(1000, 200)) {
     M5.Lcd.print('B');
-  } else if (M5.BtnC.wasReleased()) {
+  } else if (M5.BtnC.wasReleased() || M5.BtnC.pressedFor(1000, 200)) {
     M5.Lcd.print('C');
   } else if (M5.BtnB.wasReleasefor(700)) {
     M5.Lcd.clear(BLACK);

src/utility/Button.cpp

@@ -120,6 +120,14 @@ uint8_t Button::pressedFor(uint32_t ms) {
   return (_state == 1 && _time - _lastChange >= ms) ? 1 : 0;
 }
 
+uint8_t Button::pressedFor(uint32_t ms, uint32_t continuous_time) {
+  if (_state == 1 && _time - _lastChange >= ms && _time - _lastLongPress >= continuous_time) {
+    _lastLongPress = _time;
+    return 1;
+  } 
+  return 0;
+}
+
 uint8_t Button::releasedFor(uint32_t ms) {
   return (_state == 0 && _time - _lastChange >= ms) ? 1 : 0;
 }

src/utility/Button.h

@@ -24,6 +24,7 @@ class Button {
     uint8_t wasPressed();
     uint8_t wasReleased();
     uint8_t pressedFor(uint32_t ms);
+    uint8_t pressedFor(uint32_t ms, uint32_t continuous_time);
     uint8_t releasedFor(uint32_t ms);
     uint8_t wasReleasefor(uint32_t ms);
     uint32_t lastChange();
@@ -38,6 +39,7 @@ class Button {
     uint32_t _time;         //time of current state (all times are in ms)
     uint32_t _lastTime;     //time of previous state
     uint32_t _lastChange;   //time of last state change
+    uint32_t _lastLongPress;   //time of last state change
     uint32_t _dbTime;       //debounce time
     uint32_t _pressTime;    //press time
     uint32_t _hold_time;    //hold time call wasreleasefor