mehmet akif arvas / hcsr04_TR

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hcsr04.cpp

Committer:
marvas
Date:
2018-12-09
Revision:
0:530d4c35d92a

File content as of revision 0:530d4c35d92a:

#include "hcsr04.h"
#include "mbed.h"
/*

HCSR04 Ultrasonik sensör kullanýmý
Mehmet Akif Arvas
Herkese açýktýr. Telif hakký yoktur. :))
*/
HCSR04::HCSR04(PinName t, PinName e) : trig(t), echo(e) {}
 int HCSR04::echo_sure() {
        
    timer.reset();  //reset timer
    trig=0;   // trigger low 
    wait_us(2); //  wait 
    trig=1;   //  trigger high
    wait_us(10);
    trig=0;  // trigger low
         while(!echo); // start pulseIN
      timer.start();
     while(echo);
      timer.stop();
     return timer.read_us(); 
 
}
 
//return distance in cm 
int HCSR04::uzaklik(){
    sure = echo_sure();
 mesafe_cm = (sure/2)/29.1  ;
        return mesafe_cm;

}