Led.cpp

00001 /******************** (C) COPYRIGHT 2016 Delta Electronics, Inc. ***************
00002 *
00003 * File Name : Led.cpp
00004 * Authors   : Tsungta Wu - CPBG (tsungta.wu@deltaww.com)
00005 * Version   : V.1.0.1
00006 * Date      : 2016/Nov/14
00007 *
00008 *******************************************************************************/
00009 
00010 #include "Led.h"
00011 #include "mbed.h"
00012 
00013 static uint8_t on_logic; 
00014 
00015 using namespace mbed;
00016  
00017 Led::Led(PinName pin, uint8_t On_Logic) : _led(pin) {
00018     on_logic = On_Logic;
00019     _led = !on_logic;//turn off when init
00020 
00021 }
00022 
00023 static float Int;
00024 static uint8_t* Toggle;
00025 static uint16_t Num;
00026 static uint16_t toggle_cnt;
00027 
00028  /**turn off led instantaneous 
00029   * usually not used 
00030   */
00031   
00032 void Led::offLed() {
00033      _led = !on_logic;
00034      toggle_cnt = Num;
00035 }
00036 
00037 /** Turn on led with given duration.
00038  * @param time - the duration of the tone in seconds
00039  */
00040      
00041 void Led::simpleBlink(float time) {
00042     _led = on_logic;
00043     tnext.attach(this,&Led::offLed, time);   // time to off
00044 }
00045   
00046 void Led::nextToggle() {
00047     if (++toggle_cnt < Num) {
00048       if (Toggle[toggle_cnt] > 0)    
00049         _led = on_logic;
00050       else
00051         _led = !on_logic;  
00052       tnext.attach(this,&Led::nextToggle, Int);   // time to off
00053     } else offLed();
00054 }
00055 
00056 void Led::toggleLed (uint8_t* toggle_on_off, uint16_t toggle_num, float tonggle_time) {
00057     offLed();
00058     
00059     Int = tonggle_time;  
00060     Num = toggle_num;
00061     Toggle = toggle_on_off;
00062     
00063     toggle_cnt = 0;
00064     if (on_logic)
00065         _led = Toggle[toggle_cnt];
00066     else
00067         _led = !Toggle[toggle_cnt];  
00068     tnext.attach(this,&Led::nextToggle, Int);   // time to off    
00069 }
00070