![](/media/cache/group/default_image.jpg.50x50_q85.jpg)
Cambios
Dependencies: mbed Adafruit_GFX SeeedShieldBot BluetoothSerial
Diff: hcsr04.h
- Revision:
- 0:92bf762d49fa
diff -r 000000000000 -r 92bf762d49fa hcsr04.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/hcsr04.h Sun Dec 20 22:27:31 2020 +0000 @@ -0,0 +1,68 @@ +/* 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" + +/** HCSR04 Class(es) + */ + +class HCSR04 +{ +public: + /** Create a HCSR04 object connected to the specified pin + * @param pin i/o pin to connect to + */ + HCSR04(PinName TrigPin,PinName EchoPin); + ~HCSR04(); + + /** Return the distance from obstacle in cm + * @param distance in cms and returns -1, in case of failure + */ + unsigned int get_dist_cm(void); + /** Return the pulse duration equal to sonic waves travelling to obstacle and back to receiver. + * @param pulse duration in microseconds. + */ + unsigned int get_pulse_us(void); + /** Generates the trigger pulse of 10us on the trigger PIN. + */ + void start(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 pulsedur; + unsigned int distance; +}; + +#endif \ No newline at end of file