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A hello world program for the HC-SR04
Dependencies: HC_SR04_Ultrasonic_Library mbed
main.cpp
- Committer:
- ejteb
- Date:
- 2014-12-04
- Revision:
- 1:4a5586eb1765
- Parent:
- 0:1704ea055c4f
File content as of revision 1:4a5586eb1765:
#include "mbed.h" #include "ultrasonic.h" void dist(int distance) { //put code here to happen when the distance is changed printf("Distance changed to %dmm\r\n", distance); } ultrasonic mu(D8, D9, .1, 1, &dist); //Set the trigger pin to D8 and the echo pin to D9 //have updates every .1 seconds and a timeout after 1 //second, and call dist when the distance changes int main() { mu.startUpdates();//start mesuring the distance while(1) { //Do something else here mu.checkDistance(); //call checkDistance() as much as possible, as this is where //the class checks if dist needs to be called. } }