Damian Herman / Mbed 2 deprecated NetrunnerMain

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Dependencies:   mbed

include/SR04.h@5:1afe17a20a5b, 2015-08-13 (annotated)

Committer:
overkiller
Date:
Thu Aug 13 15:52:19 2015 +0000
Revision:
5:1afe17a20a5b
Child:
6:9eb153e1d472
sensor code

Who changed what in which revision?

UserRevisionLine numberNew contents of line
overkiller 5:1afe17a20a5b 1 #ifndef SR04_H
overkiller 5:1afe17a20a5b 2 #define SR04_H
overkiller 5:1afe17a20a5b 3 DigitalOut pinTrigg(PC_10);
overkiller 5:1afe17a20a5b 4 DigitalIn pinEcho(PC_12);
overkiller 5:1afe17a20a5b 5 const char* distMsg = "Actual distance: %g \n\r";
overkiller 5:1afe17a20a5b 6 float pulseIn(DigitalIn pin)
overkiller 5:1afe17a20a5b 7 {
overkiller 5:1afe17a20a5b 8 Timer durationTimer;
overkiller 5:1afe17a20a5b 9 float tempDuration = 0;
overkiller 5:1afe17a20a5b 10 while(!pin); //wait for high
overkiller 5:1afe17a20a5b 11 durationTimer.start();
overkiller 5:1afe17a20a5b 12 while(pin); //wait for low
overkiller 5:1afe17a20a5b 13 tempDuration = durationTimer.read_us();
overkiller 5:1afe17a20a5b 14 return tempDuration;
overkiller 5:1afe17a20a5b 15 }
overkiller 5:1afe17a20a5b 16 float getDistance(int sensorID)
overkiller 5:1afe17a20a5b 17 {
overkiller 5:1afe17a20a5b 18 if(sensorID == 0)
overkiller 5:1afe17a20a5b 19 {
overkiller 5:1afe17a20a5b 20 float duration = 0;
overkiller 5:1afe17a20a5b 21 pinTrigg = 0;
overkiller 5:1afe17a20a5b 22 wait_us(2);
overkiller 5:1afe17a20a5b 23 pinTrigg = 1;
overkiller 5:1afe17a20a5b 24 wait_us(10);
overkiller 5:1afe17a20a5b 25 pinTrigg = 0;
overkiller 5:1afe17a20a5b 26 duration = pulseIn(pinEcho);
overkiller 5:1afe17a20a5b 27 duration /= 58; //datasheet!
overkiller 5:1afe17a20a5b 28 return duration;
overkiller 5:1afe17a20a5b 29 }
overkiller 5:1afe17a20a5b 30 return 0;
overkiller 5:1afe17a20a5b 31 }
overkiller 5:1afe17a20a5b 32 #endif //SR04_H