RUOFAN LI
Li Ruofan 201199450
Dependencies: mbed Gamepad Joystick
Diff: bgm/bgm.cpp
- Revision:
- 6:cbd9e1f26a10
- Parent:
- 3:cf9fead9c3f4
- Child:
- 8:b4a2954dd74f
--- a/bgm/bgm.cpp Fri May 15 19:57:40 2020 +0000
+++ b/bgm/bgm.cpp Fri May 15 21:16:14 2020 +0000
@@ -2,12 +2,22 @@
// construct & destruct/
bgm::bgm()
-{
-}
+ :
+ _timeout(new Timeout()),
+ _buzzer(new PwmOut(PTC10))
+{}
+
bgm::~bgm()
{
+
}
+void Sound::tone(float frequency, float duration)
+{
+ _buzzer->period(1.0f/frequency);
+ _buzzer->write(0.5); // 50% duty cycle - square wave
+ _timeout->attach(callback(this, &Sound::tone_off), duration );
+}
// The number "1,2,3,4,5,6,7" means each number note in the notation
// Excerpted from famous Chinese and English songs