Ciaran O'Malley / Mbed 2 deprecated Speaker

Lab exercise 2.4

Dependencies:   mbed C12832

main.cpp@0:d3690ebbbcd6, 2020-06-20 (annotated)

Committer:
ciaranom
Date:
Sat Jun 20 11:14:10 2020 +0000
Revision:
0:d3690ebbbcd6
Child:
1:54ad620bcc3d
Lab exercise 2.4;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ciaranom 0:d3690ebbbcd6 1 #include "mbed.h"
ciaranom 0:d3690ebbbcd6 2 DigitalIn fire(p14);
ciaranom 0:d3690ebbbcd6 3 PwmOut spkr(p26);
ciaranom 0:d3690ebbbcd6 4 AnalogIn pot1(p19);
ciaranom 0:d3690ebbbcd6 5 int main()
ciaranom 0:d3690ebbbcd6 6 {
ciaranom 0:d3690ebbbcd6 7 //set loop var
ciaranom 0:d3690ebbbcd6 8 float starti = 500.0;
ciaranom 0:d3690ebbbcd6 9 float endi = 3000.0;
ciaranom 0:d3690ebbbcd6 10 float stepi = 50.0;
ciaranom 0:d3690ebbbcd6 11
ciaranom 0:d3690ebbbcd6 12
ciaranom 0:d3690ebbbcd6 13
ciaranom 0:d3690ebbbcd6 14 while (1) {
ciaranom 0:d3690ebbbcd6 15 for (float i=starti; i<endi; i+=stepi) {
ciaranom 0:d3690ebbbcd6 16 spkr.period(1.0/i);
ciaranom 0:d3690ebbbcd6 17 spkr=0.5;
ciaranom 0:d3690ebbbcd6 18 wait(0.1);
ciaranom 0:d3690ebbbcd6 19 }
ciaranom 0:d3690ebbbcd6 20 spkr=0.0;
ciaranom 0:d3690ebbbcd6 21
ciaranom 0:d3690ebbbcd6 22
ciaranom 0:d3690ebbbcd6 23 while(pot1.read() < 0.5) {
ciaranom 0:d3690ebbbcd6 24 starti = 1500.0;
ciaranom 0:d3690ebbbcd6 25 } // this uses the pot to control the program
ciaranom 0:d3690ebbbcd6 26 }
ciaranom 0:d3690ebbbcd6 27 }