niall behan
/
speaker
lab2.5 instru
Diff: main.cpp
- Revision:
- 0:55482a69d9e9
diff -r 000000000000 -r 55482a69d9e9 main.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Sat Apr 13 14:51:20 2019 +0000 @@ -0,0 +1,24 @@ +#include "mbed.h" + +DigitalIn fire(p14); +PwmOut spkr(p26); + +int main() +{ + while(1) { + for (float i=2000.0; i<5000.0; i+=100) + { + spkr.period(1.0/i); + spkr=0.5; + wait(0.1); + } + for (float i=5000.0; i>2000.0; i-=100) + { + spkr.period(1.0/i); + spkr=0.5; + wait(0.1); + } + spkr=0.0; + while (!fire) {} + } +}