Bernard Arnault / Mbed 2 deprecated mbed-os-tp_sigfox

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Dependencies:   mbed

hcsr04.cpp

Committer:
bernard_arnault
Date:
2020-07-06
Revision:
0:2d8f1aed9d70

File content as of revision 0:2d8f1aed9d70:

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

HCSR04::HCSR04(PinName t, PinName e) : trig(t), echo(e) {}
 long HCSR04::echo_duration() {
        
    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 
long HCSR04::distance(){
    duration = echo_duration();
  distance_cm = (duration/2)/29.1  ;
        return distance_cm;
 
}*/