Applied engineering Team / Mbed 2 deprecated HC-SR04uzzadatak6

primjer mjerenja udaljenosti

Dependencies:   mbed

Fork of HC-SR04 by Goji .

main.cpp@0:e7a1440e980a, 2015-01-28 (annotated)

Committer:
Goji
Date:
Wed Jan 28 15:17:47 2015 +0000
Revision:
0:e7a1440e980a
Child:
1:144bd7bdd1d1
HC-SR04 test for @nanaju_

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Goji 0:e7a1440e980a 1 #include "mbed.h"
Goji 0:e7a1440e980a 2 //#include "Pswitch.h"
Goji 0:e7a1440e980a 3
Goji 0:e7a1440e980a 4 Serial pc(USBTX, USBRX); // tx, rx
Goji 0:e7a1440e980a 5
Goji 0:e7a1440e980a 6 DigitalOut trig (p25);
Goji 0:e7a1440e980a 7 DigitalIn echo (p6);
Goji 0:e7a1440e980a 8 //Pswitch sw(p8);
Goji 0:e7a1440e980a 9 double pulsedur, distance;
Goji 0:e7a1440e980a 10 Timer tmr;
Goji 0:e7a1440e980a 11
Goji 0:e7a1440e980a 12 int main()
Goji 0:e7a1440e980a 13 {
Goji 0:e7a1440e980a 14 pc.printf("start\n");
Goji 0:e7a1440e980a 15 while(1) {
Goji 0:e7a1440e980a 16 tmr.reset();
Goji 0:e7a1440e980a 17 trig = 1;
Goji 0:e7a1440e980a 18 wait_us(10);
Goji 0:e7a1440e980a 19 trig = 0;
Goji 0:e7a1440e980a 20
Goji 0:e7a1440e980a 21 while (!echo); // wait high
Goji 0:e7a1440e980a 22 tmr.start();
Goji 0:e7a1440e980a 23
Goji 0:e7a1440e980a 24 while (echo); // wait low
Goji 0:e7a1440e980a 25 tmr.stop();
Goji 0:e7a1440e980a 26
Goji 0:e7a1440e980a 27 pulsedur = tmr.read_us();
Goji 0:e7a1440e980a 28 distance = pulsedur*0.017; //cm
Goji 0:e7a1440e980a 29 pc.printf("pulsedur=%8.2f\n", distance);
Goji 0:e7a1440e980a 30 wait(0.3);
Goji 0:e7a1440e980a 31 }
Goji 0:e7a1440e980a 32 }