4180 LabTeam - Spring '18 / Mbed 2 deprecated Lab3Part1

Sensors with Distance

Dependencies:   HC_SR04_Ultrasonic_Library mbed

Fork of LPC1768_HCSR04_HelloWorld by jim hamblen

main.cpp@3:65b2a102e23e, 2018-02-28 (annotated)

Committer:
bjs9
Date:
Wed Feb 28 09:55:03 2018 +0000
Revision:
3:65b2a102e23e
Parent:
2:3566c2d1e86b 
Sensor with Distance;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ejteb 0:1704ea055c4f 1 #include "mbed.h"
ejteb 0:1704ea055c4f 2 #include "ultrasonic.h"
ejteb 0:1704ea055c4f 3
bjs9 3:65b2a102e23e 4
bjs9 3:65b2a102e23e 5 Serial pc(USBTX, USBRX);
ejteb 0:1704ea055c4f 6 void dist(int distance)
ejteb 0:1704ea055c4f 7 {
4180_1 2:3566c2d1e86b 8 //put code here to execute when the distance has changed
bjs9 3:65b2a102e23e 9 float feet_distance = distance * 0.00328084f;
bjs9 3:65b2a102e23e 10 pc.printf("Distance %d mm\rt\n", distance);
bjs9 3:65b2a102e23e 11 pc.printf("Distance %.5f ft\r\n", feet_distance);
ejteb 0:1704ea055c4f 12 }
ejteb 0:1704ea055c4f 13
4180_1 2:3566c2d1e86b 14 ultrasonic mu(p6, p7, .1, 1, &dist); //Set the trigger pin to D8 and the echo pin to D9
ejteb 1:4a5586eb1765 15 //have updates every .1 seconds and a timeout after 1
ejteb 1:4a5586eb1765 16 //second, and call dist when the distance changes
ejteb 0:1704ea055c4f 17
ejteb 0:1704ea055c4f 18 int main()
ejteb 0:1704ea055c4f 19 {
4180_1 2:3566c2d1e86b 20 mu.startUpdates();//start measuring the distance
ejteb 0:1704ea055c4f 21 while(1)
ejteb 0:1704ea055c4f 22 {
ejteb 1:4a5586eb1765 23 //Do something else here
ejteb 1:4a5586eb1765 24 mu.checkDistance(); //call checkDistance() as much as possible, as this is where
ejteb 1:4a5586eb1765 25 //the class checks if dist needs to be called.
ejteb 0:1704ea055c4f 26 }
ejteb 0:1704ea055c4f 27 }