00001 /* mbed Software PWM Library without using PWM pins 00002 * Copyright (c) 2012 Takashi Kojo 00003 * based and modified, Copyright (c) 2010 Jasper Denkers 00004 * 00005 * Permission is hereby granted, free of charge, to any person obtaining a copy 00006 * of this software and associated documentation files (the "Software"), to deal 00007 * in the Software without restriction, including without limitation the rights 00008 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 00009 * copies of the Software, and to permit persons to whom the Software is 00010 * furnished to do so, subject to the following conditions: 00011 * 00012 * The above copyright notice and this permission notice shall be included in 00013 * all copies or substantial portions of the Software. 00014 * 00015 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 00016 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 00017 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 00018 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 00019 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 00020 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 00021 * THE SOFTWARE. 00022 */ 00023 00024 #ifndef MBED_SOFTWAREPWM_H 00025 #define MBED_SOFTWAREPWM_H 00026 00027 #include "mbed.h" 00028 00055 class SoftwarePWM 00056 { 00057 00058 public: 00063 SoftwarePWM(PinName Pin); 00064 00069 void SetPosition(int NewPos); 00070 00076 void Enable(int StartPos, int Period); 00077 00081 void Disable(); 00082 00083 private: 00084 void StartPulse(); 00085 void EndPulse(); 00086 00087 int Position; 00088 DigitalOut SoftwarePWMPin; 00089 Ticker Pulse; 00090 Timeout PulseStop; 00091 }; 00092 00093 00094 extern SoftwarePWM Intensity[] ; 00095 #define INTENSITY_FACTOR 10 00096 00097 #endif