Diff: beep2.h

Revision:

5:a844c1579d27

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/beep2.h	Fri Jan 24 09:47:13 2014 +0000
@@ -0,0 +1,60 @@
+#ifndef MBED_BEEP2_H
+#define MBED_BEEP2_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(p21);
+ * 
+ * int main() {
+ *        ...
+ *   buzzer.beep(1000,0.5);    
+ *       ...
+ * }
+ * @endcode
+ */
+
+
+namespace mbed {
+
+/* Class: Beep
+ *  A class witch uses pwm to controle a beeper to generate sounds.
+ */
+class Beep {
+
+public:
+
+/** Create a Beep object connected to the specified PwmOut pin
+ *
+ * @param pin PwmOut pin to connect to 
+ */
+    Beep (PinName pin);
+
+/** 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 (float frequency, float time,float dc);
+    void beepNoStop (float frequency,float dc);
+    void changeDc(float dc);
+/** stop the beep instantaneous 
+ * usually not used 
+ */
+    void nobeep();
+
+private :
+    PwmOut _pwm;
+    Timeout toff;
+};
+
+}
+#endif