Chris Styles / Mbed 2 deprecated app-shield-speaker

Example program to do a frequency sweep on the speaker

Dependencies:   mbed

Fork of app-board-Speaker by Chris Styles

main.cpp@4:b141db62c34a, 2014-08-01 (annotated)

Committer:
chris
Date:
Fri Aug 01 14:33:40 2014 +0000
Revision:
4:b141db62c34a
Parent:
3:3bb3e6051175 
Updated mbed library version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
chris 0:f86c572491c3 1 #include "mbed.h"
chris 0:f86c572491c3 2
chris 3:3bb3e6051175 3 DigitalIn fire(D4);
chris 3:3bb3e6051175 4 PwmOut spkr(D6);
chris 0:f86c572491c3 5
chris 0:f86c572491c3 6 int main()
chris 0:f86c572491c3 7 {
chris 2:cfd337edff08 8 while (1) {
chris 2:cfd337edff08 9 for (float i=2000.0; i<10000.0; i+=100) {
chris 2:cfd337edff08 10 spkr.period(1.0/i);
chris 2:cfd337edff08 11 spkr=0.5;
chris 3:3bb3e6051175 12 wait(0.02);
chris 2:cfd337edff08 13 }
chris 2:cfd337edff08 14 spkr=0.0;
chris 2:cfd337edff08 15 while(!fire) {}
chris 0:f86c572491c3 16 }
chris 0:f86c572491c3 17 }