Jurica Resetar / Mbed 2 deprecated beep_2

Make noise with a piezo buzzer. Use a pwm pin. IO expander ints done.

Dependencies:   aconno_bsp mbed

Fork of beep by Jurica Resetar

beep.h@6:936ba3699e47, 2016-09-23 (annotated)

Committer:
jurica238814
Date:
Fri Sep 23 12:12:16 2016 +0000
Revision:
6:936ba3699e47
Parent:
5:49c961e79a12 
IO expander ints done.

Who changed what in which revision?

UserRevisionLine numberNew 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
jurica238814 5:49c961e79a12 6 #define isdigit(n) (n >= '0' && n <= '9')
jurica238814 5:49c961e79a12 7 #define OCTAVE_OFFSET 0
jurica238814 5:49c961e79a12 8
dreschpe 1:ddccf0a4a414 9 /** class to make sound with a buzzer, based on a PwmOut
dreschpe 3:5a8242af60ba 10 * The class use a timeout to switch off the sound - it is not blocking while making noise
dreschpe 3:5a8242af60ba 11 *
dreschpe 3:5a8242af60ba 12 * Example:
dreschpe 3:5a8242af60ba 13 * @code
dreschpe 3:5a8242af60ba 14 * // Beep with 1Khz for 0.5 seconds
dreschpe 3:5a8242af60ba 15 * #include "mbed.h"
dreschpe 3:5a8242af60ba 16 * #include "beep.h"
dreschpe 3:5a8242af60ba 17 *
dreschpe 3:5a8242af60ba 18 * Beep buzzer(p21);
dreschpe 3:5a8242af60ba 19 *
dreschpe 3:5a8242af60ba 20 * int main() {
dreschpe 3:5a8242af60ba 21 * ...
dreschpe 3:5a8242af60ba 22 * buzzer.beep(1000,0.5);
dreschpe 3:5a8242af60ba 23 * ...
dreschpe 3:5a8242af60ba 24 * }
dreschpe 3:5a8242af60ba 25 * @endcode
dreschpe 3:5a8242af60ba 26 */
dreschpe 1:ddccf0a4a414 27
dreschpe 1:ddccf0a4a414 28
dreschpe 0:18e4a9c978ec 29 namespace mbed {
dreschpe 0:18e4a9c978ec 30
dreschpe 0:18e4a9c978ec 31 /* Class: Beep
dreschpe 0:18e4a9c978ec 32 * A class witch uses pwm to controle a beeper to generate sounds.
dreschpe 0:18e4a9c978ec 33 */
dreschpe 0:18e4a9c978ec 34 class Beep {
dreschpe 0:18e4a9c978ec 35
dreschpe 0:18e4a9c978ec 36 public:
dreschpe 0:18e4a9c978ec 37
dreschpe 3:5a8242af60ba 38 /** Create a Beep object connected to the specified PwmOut pin
dreschpe 3:5a8242af60ba 39 *
dreschpe 3:5a8242af60ba 40 * @param pin PwmOut pin to connect to
dreschpe 3:5a8242af60ba 41 */
dreschpe 0:18e4a9c978ec 42 Beep (PinName pin);
dreschpe 0:18e4a9c978ec 43
dreschpe 3:5a8242af60ba 44 /** Beep with given frequency and duration.
dreschpe 3:5a8242af60ba 45 *
dreschpe 3:5a8242af60ba 46 * @param frequency - the frequency of the tone in Hz
dreschpe 3:5a8242af60ba 47 * @param time - the duration of the tone in seconds
dreschpe 3:5a8242af60ba 48 */
dreschpe 0:18e4a9c978ec 49 void beep (float frequency, float time);
jurica238814 5:49c961e79a12 50 void playRttl(char *p);
dreschpe 0:18e4a9c978ec 51
dreschpe 3:5a8242af60ba 52 /** stop the beep instantaneous
dreschpe 3:5a8242af60ba 53 * usually not used
dreschpe 3:5a8242af60ba 54 */
dreschpe 0:18e4a9c978ec 55 void nobeep();
dreschpe 0:18e4a9c978ec 56
dreschpe 0:18e4a9c978ec 57 private :
dreschpe 0:18e4a9c978ec 58 PwmOut _pwm;
dreschpe 0:18e4a9c978ec 59 Timeout toff;
dreschpe 0:18e4a9c978ec 60 };
dreschpe 0:18e4a9c978ec 61
dreschpe 0:18e4a9c978ec 62 }
dreschpe 0:18e4a9c978ec 63 #endif