Applied engineering Team / Mbed 2 deprecated HC-SR04uzzadatak6

primjer mjerenja udaljenosti

Dependencies:   mbed

Fork of HC-SR04 by Goji .

main.cpp@1:144bd7bdd1d1, 2015-06-12 (annotated)

Committer:
cvitas
Date:
Fri Jun 12 16:37:50 2015 +0000
Revision:
1:144bd7bdd1d1
Parent:
0:e7a1440e980a 
Pomo? uz zadatak 6

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);
cvitas 1:144bd7bdd1d1 8 DigitalOut led1 (LED1);
Goji 0:e7a1440e980a 9 //Pswitch sw(p8);
Goji 0:e7a1440e980a 10 double pulsedur, distance;
Goji 0:e7a1440e980a 11 Timer tmr;
Goji 0:e7a1440e980a 12
Goji 0:e7a1440e980a 13 int main()
Goji 0:e7a1440e980a 14 {
Goji 0:e7a1440e980a 15 pc.printf("start\n");
Goji 0:e7a1440e980a 16 while(1) {
Goji 0:e7a1440e980a 17 tmr.reset();
Goji 0:e7a1440e980a 18 trig = 1;
Goji 0:e7a1440e980a 19 wait_us(10);
Goji 0:e7a1440e980a 20 trig = 0;
Goji 0:e7a1440e980a 21
Goji 0:e7a1440e980a 22 while (!echo); // wait high
Goji 0:e7a1440e980a 23 tmr.start();
Goji 0:e7a1440e980a 24
Goji 0:e7a1440e980a 25 while (echo); // wait low
Goji 0:e7a1440e980a 26 tmr.stop();
Goji 0:e7a1440e980a 27
Goji 0:e7a1440e980a 28 pulsedur = tmr.read_us();
Goji 0:e7a1440e980a 29 distance = pulsedur*0.017; //cm
cvitas 1:144bd7bdd1d1 30 pc.printf("pulsedur=%8.2f\n\r", distance);
cvitas 1:144bd7bdd1d1 31 pc.printf("\n");
cvitas 1:144bd7bdd1d1 32 if (distance<4)
cvitas 1:144bd7bdd1d1 33 led1 =1;
cvitas 1:144bd7bdd1d1 34 else
cvitas 1:144bd7bdd1d1 35 led1 =0;
cvitas 1:144bd7bdd1d1 36 wait(0.5);
Goji 0:e7a1440e980a 37 }
Goji 0:e7a1440e980a 38 }