Plamen Totev
/
keypad_with_beep1
beep keypad
Fork of Autus by
buzzer/buzz.cpp@5:780a0888c3f2, 2014-04-12 (annotated)
- Committer:
- redplam
- Date:
- Sat Apr 12 20:55:13 2014 +0000
- Revision:
- 5:780a0888c3f2
- Parent:
- buzz.cpp@1:9ef26efedcea
mykeypad;
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
umairaftab | 1:9ef26efedcea | 1 | #include "mbed.h" |
umairaftab | 1:9ef26efedcea | 2 | //set timer 1ms |
umairaftab | 1:9ef26efedcea | 3 | int beep_delay; |
umairaftab | 1:9ef26efedcea | 4 | DigitalOut myled(PTE5); |
umairaftab | 1:9ef26efedcea | 5 | void timer1(void) //interrupt every 1ms |
umairaftab | 1:9ef26efedcea | 6 | { |
umairaftab | 1:9ef26efedcea | 7 | beep_delay=beep_delay-1; |
umairaftab | 1:9ef26efedcea | 8 | } |
umairaftab | 1:9ef26efedcea | 9 | void beep(float freq,int time) |
umairaftab | 1:9ef26efedcea | 10 | { |
umairaftab | 1:9ef26efedcea | 11 | |
umairaftab | 1:9ef26efedcea | 12 | beep_delay=time; |
umairaftab | 1:9ef26efedcea | 13 | |
umairaftab | 1:9ef26efedcea | 14 | do { |
umairaftab | 1:9ef26efedcea | 15 | myled = 1; |
umairaftab | 1:9ef26efedcea | 16 | wait(freq); |
umairaftab | 1:9ef26efedcea | 17 | myled = 0; |
umairaftab | 1:9ef26efedcea | 18 | wait(freq); |
umairaftab | 1:9ef26efedcea | 19 | } while(beep_delay!=0); |
umairaftab | 1:9ef26efedcea | 20 | } |