Revision 1:fdf67f893a5c, committed 2016-09-01

Comitter:

jaup

Date:

Thu Sep 01 09:21:00 2016 +0000

Parent:

0:62d614796022

Commit message:

frist commit

Changed in this revision

--- a/OneButton.cpp	Wed Aug 31 10:09:43 2016 +0000
+++ b/OneButton.cpp	Thu Sep 01 09:21:00 2016 +0000
@@ -1,3 +1,6 @@
+// Modifyed to support mbed environment, rewrite the state machine.
+// by Zibin Zheng <znbin@qq.com>
+
 // -----
 // OneButton.cpp - Library for detecting button clicks, doubleclicks and long press pattern on a single button.
 // This class is implemented for use with the Arduino environment.
@@ -5,45 +8,45 @@
 // This work is licensed under a BSD style license. See http://www.mathertel.de/License.aspx
 // More information on: http://www.mathertel.de/Arduino
 // -----
-// Changelog: see OneButton.h
-// -----
+
 
 #include "OneButton.h"
 
+
 // ----- Initialization and Default Values -----
 
-OneButton::OneButton(PinName pin, int activeLow)
+OneButton::OneButton(PinName pin, bool active_level)
 {
 	btn_pin = new DigitalIn((PinName)pin);      // sets the MenuPin as input
-	_pin = pin;
+
+	timer = new Timer;
+	timer->start();
 
-	_clickTicks = 300;        // number of millisec that have to pass by before a click is detected.
+	_clickTicks = 400;        // number of millisec that have to pass by before a click is detected.
 	_pressTicks = 800;       // number of millisec that have to pass by before a long button press is detected.
+	_debounceTicks = 10;
 
 	_state = 0; // starting with state 0: waiting for button to be pressed
 	_isLongPressed = false;  // Keep track of long press state
 
-	if (activeLow) {
-		// button connects ground to the pin when pressed.
-		_buttonReleased = HIGH; // notPressed
-		_buttonPressed = LOW;
-//		digitalWrite(pin, HIGH);   // turn on pullUp resistor
-		btn_pin->mode(PullUp);
+	button_level = (bool)(btn_pin->read());
+	active = active_level;
+
+	if (active_level) {
+		// button connects VCC to the pin when pressed.
+		btn_pin->mode(PullDown);
 
 	} else {
-		// button connects VCC to the pin when pressed.
-		_buttonReleased = LOW;
-		_buttonPressed = HIGH;
-	} // if
+		// turn on pullUp resistor
+		btn_pin->mode(PullUp);
+	}
 
-
+	_clickFunc = NULL;
+	_pressFunc = NULL;
 	_doubleClickFunc = NULL;
-	_pressFunc = NULL;
 	_longPressStartFunc = NULL;
 	_longPressStopFunc = NULL;
 	_duringLongPressFunc = NULL;
-	
-	startMillis ();
 } // OneButton
 
 
@@ -106,73 +109,86 @@
 	return _isLongPressed;
 }
 
+/**
+  * @brief  Button driver core function, driver state machine.
+  * @param  handle: the button handle strcut.
+  * @retval None
+  */
 void OneButton::tick(void)
 {
-	// Detect the input information
-//	int buttonLevel = digitalRead(_pin); // current button signal.
-	int buttonLevel = btn_pin->read(); // current button signal.
-	unsigned long now = millis(); // current (relative) time in msecs.
+	int read_gpio_level = btn_pin->read(); // current button signal.
 
-	// Implementation of the state machine
-	if (_state == 0) { // waiting for menu pin being pressed.
-		if (buttonLevel == _buttonPressed) {
-			_state = 1; // step to state 1
-			_startTime = now; // remember starting time
-		} // if
+	/*------------button debounce handle---------------*/
+	if(ticks != timer->read_ms()) { //1ms scan again.
+		if(read_gpio_level != button_level) {
+			//continue read 'debounce_cnt' times same new level change
+			if(++_debounce_cnt >= _debounceTicks) {
+				button_level = read_gpio_level;
+				_debounce_cnt = 0;
+			}
 
-	} else if (_state == 1) { // waiting for menu pin being released.
+		} else { //leved not change ,counter reset.
+			_debounce_cnt = 0;
+		}
+	}
 
-		if ((buttonLevel == _buttonReleased) && ((unsigned long)(now - _startTime) < _debounceTicks)) {
-			// button was released to quickly so I assume some debouncing.
-			// go back to state 0 without calling a function.
-			_state = 0;
+	//current (relative) time in msecs.
+	ticks = (uint16_t)(timer->read_ms());
 
-		} else if (buttonLevel == _buttonReleased) {
-			_state = 2; // step to state 2
+	/*-----------------State machine-------------------*/
+	switch (_state) {
+	case 0:
+		if(button_level == active) {	//start press
+			if(_clickFunc) _clickFunc();
+			timer->reset();
+			_state = 1;
+		}
+		break;
 
-		} else if ((buttonLevel == _buttonPressed) && ((unsigned long)(now - _startTime) > _pressTicks)) {
-			_isLongPressed = true;  // Keep track of long press state
-			if (_pressFunc) _pressFunc();
-			if (_longPressStartFunc) _longPressStartFunc();
-			if (_duringLongPressFunc) _duringLongPressFunc();
-			_state = 6; // step to state 6
+	case 1:
+		if(button_level != active) { //released
+			_state = 2;
 
-		} else {
-			// wait. Stay in this state.
-		} // if
+		} else if(ticks > _pressTicks) {
+			if(_longPressStartFunc) _longPressStartFunc();
+			_isLongPressed = 1;
+			_state = 5;
+		}
+		break;
 
-	} else if (_state == 2) { // waiting for menu pin being pressed the second time or timeout.
-		if ((unsigned long)(now - _startTime) > _clickTicks) {
-			// this was only a single short click
-			if (_clickFunc) _clickFunc();
-			_state = 0; // restart.
+	case 2:
+		if(ticks > _clickTicks) {	//released
+			//press event
+			if(_pressFunc) _pressFunc();	//press event
+			_state = 0;	//reset
 
-		} else if (buttonLevel == _buttonPressed) {
-			_state = 3; // step to state 3
-		} // if
+		} else if(button_level == active) { //press again
+			if(_clickFunc) _clickFunc();
+			_state = 3;
+		}
+		break;
 
-	} else if (_state == 3) { // waiting for menu pin being released finally.
-		if (buttonLevel == _buttonReleased) {
-			// this was a 2 click sequence.
-			if (_doubleClickFunc) _doubleClickFunc();
-			_state = 0; // restart.
-		} // if
+	case 3:	//repeat press pressing
+		if(button_level != active) {	//double releasd
+			//double click event
+			if(_doubleClickFunc) _doubleClickFunc();
+			_state = 0;
+		}
+		break;
 
-	} else if (_state == 6) { // waiting for menu pin being release after long press.
-		if (buttonLevel == _buttonReleased) {
-			_isLongPressed = false;  // Keep track of long press state
+	case 5:
+		if(button_level == active) {
+			//continue hold trigger
+			if(_duringLongPressFunc) _duringLongPressFunc();
+
+		} else { //releasd
 			if(_longPressStopFunc) _longPressStopFunc();
-			_state = 0; // restart.
-		} else {
-			// button is being long pressed
-			_isLongPressed = true; // Keep track of long press state
-			if (_duringLongPressFunc) _duringLongPressFunc();
-		} // if
-
-	} // if
-} // OneButton.tick()
-
+			_isLongPressed = 0;
+			_state = 0; //reset
+		}
+		break;
+	}
+}
 
 // end.
 
-

--- a/OneButton.h	Wed Aug 31 10:09:43 2016 +0000
+++ b/OneButton.h	Thu Sep 01 09:21:00 2016 +0000
@@ -1,3 +1,6 @@
+// Modifyed to support mbed environment, rewrite the state machine.
+// by Zibin Zheng <znbin@qq.com>
+
 // -----
 // OneButton.h - Library for detecting button clicks, doubleclicks and long press pattern on a single button.
 // This class is implemented for use with the Arduino environment.
@@ -5,21 +8,66 @@
 // This work is licensed under a BSD style license. See http://www.mathertel.de/License.aspx
 // More information on: http://www.mathertel.de/Arduino
 // -----
-// 02.10.2010 created by Matthias Hertel
-// 21.04.2011 transformed into a library
-// 01.12.2011 include file changed to work with the Arduino 1.0 environment
-// 23.03.2014 Enhanced long press functionalities by adding longPressStart and longPressStop callbacks
-// 21.09.2015 A simple way for debounce detection added.
-// -----
+
 
 #ifndef OneButton_h
 #define OneButton_h
 
 #include "mbed.h"
-#include "millis.h"
+
+
+/**
+ * Example:
+ * @code
+ 
+#include "mbed.h"
+#include "OneButton.h"
+
+Serial pc(SERIAL_TX, SERIAL_RX);
+
+OneButton btn1(PC_13);
+
+void pressed() {
+	pc.printf("pressed\r\n");
+}
+
+void click() {
+	pc.printf("click\r\n");
+}
+
+void double_click() {
+	pc.printf("double_click\r\n");
+}
 
-#define HIGH		1
-#define LOW         0
+void long_start() {
+	pc.printf("long_start\r\n");
+}
+
+void long_hold() {
+	pc.printf("long_hold\r\n");
+}
+
+void long_stop() {
+	pc.printf("long_stop\r\n");
+}
+
+int main() {
+
+	btn1.attachClick(&click);
+	btn1.attachPress(&pressed);
+	btn1.attachDoubleClick(&double_click);
+	btn1.attachLongPressStart(&long_start);
+	btn1.attachDuringLongPress(&long_hold);
+	btn1.attachLongPressStop(&long_stop);
+
+	while(1) {
+
+		btn1.tick(); //loop
+	}
+}
+
+*/
+
 
 // ----- Callback function types -----
 
@@ -31,8 +79,9 @@
 class OneButton
 {
 public:
+
 	// ----- Constructor -----
-	OneButton(PinName pin, int active = 1);
+	OneButton(PinName pin, bool active_level = 0);
 
 	// ----- Set runtime parameters -----
 
@@ -57,15 +106,11 @@
 	bool isLongPressed();
 
 private:
-	int _pin;        // hardware pin number.
 	int _clickTicks; // number of ticks that have to pass by before a click is detected
 	int _pressTicks; // number of ticks that have to pass by before a long button press is detected
-	static 
-	const int _debounceTicks = 10; // number of ticks for debounce times.
 
 	int _buttonReleased;
 	int _buttonPressed;
-
 	bool _isLongPressed;
 
 	// These variables will hold functions acting as event source.
@@ -78,13 +123,18 @@
 
 	// These variables that hold information across the upcoming tick calls.
 	// They are initialized once on program start and are updated every time the tick function is called.
-	int _state;
-	unsigned long _startTime; // will be set in state 1
+	
+	uint16_t ticks;
+	uint8_t _state;
+	uint8_t _debounce_cnt;
+	uint8_t _debounceTicks; // number of ticks for debounce times.
+	bool button_level;
+	bool active;
 	
 	DigitalIn* btn_pin;
+	Timer *timer;
 };
 
 #endif
 
 
-

--- a/millis.lib	Wed Aug 31 10:09:43 2016 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,1 +0,0 @@
-http://developer.mbed.org/teams/DFRobot/code/millis/#736e6cc31bcd