Removed most of the comments
Dependents: Hodak_MorseCoder LED_BOZICNE_LAMPICE
Diff: buzzer.cpp
- Revision:
- 2:857083873b09
- Parent:
- 0:01eac446ef9f
diff -r 622b1d533a1c -r 857083873b09 buzzer.cpp --- a/buzzer.cpp Thu May 05 14:17:20 2016 +0000 +++ b/buzzer.cpp Thu Nov 19 10:41:25 2020 +0000 @@ -1,52 +1,27 @@ #include "buzzer.h" #include "mbed.h" - -/** class to make sound with a buzzer, based on a PwmOut - * The class use a timeout to switch off the sound - it is not blocking while making noise - * - * Example: - * @code - * // Beep with 1Khz for 0.5 seconds - * #include "mbed.h" - * #include "beep.h" - * - * Beep buzzer(PTC2); - * - * int main() { - * ... - * buzzer.beep(1000,0.5); - * ... - * } - * @endcode - */ - + using namespace mbed; - // constructor - /** Create a Beep object connected to the specified PwmOut pin - * - * @param pin PwmOut pin to connect to - */ - -Beep::Beep(PinName pin) : _pwm(pin) { - _pwm.write(0.0); // after creating it have to be off -} - - /** stop the beep instantaneous - * usually not used - */ -void Beep::nobeep() { + +Beep::Beep(PinName pin) : _pwm(pin) +{ _pwm.write(0.0); } - + +void Beep::nobeep() +{ + _pwm.write(0.0); +} + /** Beep with given frequency and duration. * * @param frequency - the frequency of the tone in Hz * @param time - the duration of the tone in seconds */ - -void Beep::beep(float freq, float time) { - +void Beep::beep(float freq, float time) +{ + _pwm.period(1.0/freq); - _pwm.write(0.5); // 50% duty cycle - beep on - toff.attach(this,&Beep::nobeep, time); // time to off + _pwm.write(0.5); + toff.attach(this,&Beep::nobeep, time); } \ No newline at end of file