A library for the HCSR04 sensor. work with interrupt
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A small library for the HCSR04 sensor. works with interrupt on the egde of the echo
link to datasheet: http://www.micropik.com/PDF/HCSR04.pdf
HCSR04.h
- Committer:
- gert_lauritsen
- Date:
- 2015-04-29
- Revision:
- 1:e3a37f4015da
- Parent:
- 0:9f4365d41bf1
File content as of revision 1:e3a37f4015da:
//--------------------------------------------------------- //Class for measure distance with the HCSR04 sensor /* Eksemple void distance(long Distance) { printf("Distance: %d \r",Distance); } int main() { sensor= new HCSR04(p5,p6,distance); printf("Test af sensor\r\n"); while(1) { sensor->Trigger(); wait(0.1); } } Datasheet: http://www.micropik.com/PDF/HCSR04.pdf */ #include "mbed.h" typedef void (*callback_type)(long); class HCSR04 { public: HCSR04(PinName t, PinName e,callback_type _callback); void Trigger(); //starts the trigger private: DigitalOut trig; InterruptIn echo; Timer timer; Timeout *pulsWidth; callback_type callback; long dist_cm; void Trigoff(); //Turnoff the trigger void DistResult(); void StartTimer(); };