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Proejct2
Diff: hcsr04.h
- Revision:
- 0:fb0929f37ebe
- Child:
- 2:0acb6ade091c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/hcsr04.h Sat Mar 30 17:27:39 2013 +0000 @@ -0,0 +1,63 @@ +/* Copyright (c) 2013 Prabhu Desai + * pdtechworld@gmail.com + * + * + * 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. + * + * For more details on the sensor : + * http://www.elecfreaks.com/store/hcsr04-ultrasonic-sensor-distance-measuring-module-p-91.html?zenid=pgm8pgnvaodbe36dibq5s1soi3 + * + * 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_HCSR04_H +#define MBED_HCSR04_H + +#include "mbed.h" + +/** Distance Measure Class(es) + */ + +class DistMeasure +{ +public: + /** Create a DistMeasure object connected to the specified pin + * @param pin i/o pin to connect to + */ + DistMeasure(PinName TrigPin,PinName EchoPin,unsigned int maxtime); + ~DistMeasure(); + + /** Return the distance from obstacle in cm + * @param distance in cms and returns -1, in case of failure + */ + + unsigned int get_distance_cm(void); + void isr_rise(void); + void isr_fall(void); + void fall (void (*fptr)(void)); + void rise (void (*fptr)(void)); + + + +private: + + Timer pulsetime; + DigitalOut trigger; + InterruptIn echo; + unsigned int timeout; + unsigned int pulsedur; + unsigned int distance; +}; + +#endif \ No newline at end of file