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AVEncoder.h
00001 /** 00002 * @author Aravind Vadali 00003 * 00004 * @section LICENSE 00005 * 00006 * Copyright (c) 2015 00007 * 00008 * Permission is hereby granted, free of charge, to any person obtaining a copy 00009 * of this software and associated documentation files (the "Software"), to deal 00010 * in the Software without restriction, including without limitation the rights 00011 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 00012 * copies of the Software, and to permit persons to whom the Software is 00013 * furnished to do so, subject to the following conditions: 00014 * 00015 * The above copyright notice and this permission notice shall be included in 00016 * all copies or substantial portions of the Software. 00017 * 00018 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 00019 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 00020 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 00021 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 00022 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 00023 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 00024 * THE SOFTWARE. 00025 * 00026 * @section DESCRIPTION 00027 * Because the QEI library is buggy as !@#$ 00028 * Instead of even trying to determine direction, this will just give number of 00029 * pulses. A more fleshed out solution where direction is taken into account can 00030 * be worked out later. 00031 **/ 00032 00033 #ifndef QEI_H 00034 #define QEI_H 00035 00036 /** 00037 * Includes 00038 */ 00039 #include "mbed.h" 00040 00041 class AVEncoder { 00042 00043 public: 00044 AVEncoder (PinName channelA, PinName channelB); 00045 long int getPulses(); 00046 void reset(); 00047 private: 00048 volatile long int m_pulses; 00049 InterruptIn chanA; 00050 InterruptIn chanB; 00051 void incrementCount(); 00052 }; 00053 00054 00055 #endif /* QEI_H */
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