Peter Drescher
Make noise with a piezo buzzer. Use a pwm pin.
Dependents: Cave_Runner popcorn default USBMIDI_Buzzer ... more
beep.h@0:18e4a9c978ec, 2011-02-01 (annotated)
- Committer:
- dreschpe
- Date:
- Tue Feb 01 18:44:45 2011 +0000
- Revision:
- 0:18e4a9c978ec
- Child:
- 1:ddccf0a4a414
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| dreschpe | 0:18e4a9c978ec | 1 | #ifndef MBED_BEEP_H |
| dreschpe | 0:18e4a9c978ec | 2 | #define MBED_BEEP_H |
| dreschpe | 0:18e4a9c978ec | 3 | |
| dreschpe | 0:18e4a9c978ec | 4 | #include "mbed.h" |
| dreschpe | 0:18e4a9c978ec | 5 | |
| dreschpe | 0:18e4a9c978ec | 6 | namespace mbed { |
| dreschpe | 0:18e4a9c978ec | 7 | |
| dreschpe | 0:18e4a9c978ec | 8 | /* Class: Beep |
| dreschpe | 0:18e4a9c978ec | 9 | * A class witch uses pwm to controle a beeper to generate sounds. |
| dreschpe | 0:18e4a9c978ec | 10 | */ |
| dreschpe | 0:18e4a9c978ec | 11 | class Beep { |
| dreschpe | 0:18e4a9c978ec | 12 | |
| dreschpe | 0:18e4a9c978ec | 13 | public: |
| dreschpe | 0:18e4a9c978ec | 14 | |
| dreschpe | 0:18e4a9c978ec | 15 | /* Constructor: Beep |
| dreschpe | 0:18e4a9c978ec | 16 | * Creates a new beeper object. |
| dreschpe | 0:18e4a9c978ec | 17 | * |
| dreschpe | 0:18e4a9c978ec | 18 | * Variables: |
| dreschpe | 0:18e4a9c978ec | 19 | * pin - The pin which is connected to the beeper. |
| dreschpe | 0:18e4a9c978ec | 20 | */ |
| dreschpe | 0:18e4a9c978ec | 21 | Beep (PinName pin); |
| dreschpe | 0:18e4a9c978ec | 22 | |
| dreschpe | 0:18e4a9c978ec | 23 | /* Function: beep |
| dreschpe | 0:18e4a9c978ec | 24 | * Beep with given frequency and duration. |
| dreschpe | 0:18e4a9c978ec | 25 | * |
| dreschpe | 0:18e4a9c978ec | 26 | * Variables: |
| dreschpe | 0:18e4a9c978ec | 27 | * frequency - The frequency to use. |
| dreschpe | 0:18e4a9c978ec | 28 | * time - The turation to beep. |
| dreschpe | 0:18e4a9c978ec | 29 | */ |
| dreschpe | 0:18e4a9c978ec | 30 | void beep (float frequency, float time); |
| dreschpe | 0:18e4a9c978ec | 31 | |
| dreschpe | 0:18e4a9c978ec | 32 | void nobeep(); |
| dreschpe | 0:18e4a9c978ec | 33 | |
| dreschpe | 0:18e4a9c978ec | 34 | private : |
| dreschpe | 0:18e4a9c978ec | 35 | PwmOut _pwm; |
| dreschpe | 0:18e4a9c978ec | 36 | Timeout toff; |
| dreschpe | 0:18e4a9c978ec | 37 | }; |
| dreschpe | 0:18e4a9c978ec | 38 | |
| dreschpe | 0:18e4a9c978ec | 39 | } |
| dreschpe | 0:18e4a9c978ec | 40 | #endif |