TVZ Mechatronics Team / Mbed 2 deprecated HC-SR04

A program that demonstrates the development of library, using as an example an ultrasonic distance sensor HC-SR04.

Dependencies:   mbed HCSR04 AutomationElements

The purpose of this program is to encourage students to develope their own classes. Instructions how to follow the development of this program and class HCSR04 for ultrasonic distance measurement are given here.

main.cpp@2:f86b1e3609b3, 2015-12-05 (annotated)

Committer:
tbjazic
Date:
Sat Dec 05 09:07:15 2015 +0000
Revision:
2:f86b1e3609b3
Parent:
1:22043b67c31c
Child:
3:3297ea6e3ae1
Library HCSR04 created.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
tbjazic 2:f86b1e3609b3 1 /** Revision 2: Separating the class declaration, implementation and main() function into files. */
tbjazic 0:ebee649c5b1b 2
tbjazic 0:ebee649c5b1b 3 #include "mbed.h"
tbjazic 2:f86b1e3609b3 4 #include "HCSR04.h"
tbjazic 0:ebee649c5b1b 5
tbjazic 0:ebee649c5b1b 6 Serial pc(USBTX, USBRX); // communication with terminal
tbjazic 0:ebee649c5b1b 7
tbjazic 0:ebee649c5b1b 8 int main() {
tbjazic 1:22043b67c31c 9 HCSR04 sensor(p5, p7); // instantiate the sensor object
tbjazic 0:ebee649c5b1b 10 while(1) {
tbjazic 1:22043b67c31c 11 /** Print the result in cm to the terminal with 1 decimal place
tbjazic 0:ebee649c5b1b 12 * (number 5 after % means that total of 5 digits will be reserved
tbjazic 0:ebee649c5b1b 13 * for printing the number, including the dot and one decimal place). */
tbjazic 1:22043b67c31c 14 pc.printf("Distance: %5.1f cm\r", sensor.getDistance_cm());
tbjazic 1:22043b67c31c 15 wait_ms(1000-25);
tbjazic 0:ebee649c5b1b 16 }
tbjazic 0:ebee649c5b1b 17 }