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working version with calibration done
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Diff: IR_Turret/PwmIn/PwmIn.h
- Revision:
- 11:5ba926692210
- Parent:
- 10:2bd9f4e02b74
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/IR_Turret/PwmIn/PwmIn.h Tue Apr 09 15:32:47 2013 +0000 @@ -0,0 +1,78 @@ +/* mbed PwmIn Library + * Copyright (c) 2008-2010, sford + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#ifndef MBED_PWMIN_H +#define MBED_PWMIN_H + +#include "mbed.h" + +/** PwmIn class to read PWM inputs + * + * Uses InterruptIn to measure the changes on the input + * and record the time they occur + * + * @note uses InterruptIn, so not available on p19/p20 + */ +class DummyCT; + +class PwmIn { +public: + /** Create a PwmIn + * + * @param p The pwm input pin (must support InterruptIn) + */ + PwmIn(PinName p); + + /** Read the current period + * + * @returns the period in micro seconds + */ + float period(); + + /** Read the current pulsewidth + * + * @returns the pulsewidth in micro seconds + */ + float pulsewidth(); + + /** Read the current dutycycle + * + * @returns the dutycycle as a percentage, represented between 0.0-1.0 + */ + float dutycycle(); + + /** A assigns a callback function when a new reading is available **/ + void (*callbackfunc)(float pulsewidth); + DummyCT* callbackobj; + void (DummyCT::*mcallbackfunc)(float pulsewidth); + + +protected: + void rise(); + void fall(); + + InterruptIn _p; + Timer _t; + float _pulsewidth, _period; +}; + +#endif