Code for autonomous ground vehicle, Data Bus, 3rd place winner in 2012 Sparkfun AVC.
Dependencies: Watchdog mbed Schedule SimpleFilter LSM303DLM PinDetect DebounceIn Servo
Beep.h
00001 #ifndef MBED_BEEP_H 00002 #define MBED_BEEP_H 00003 00004 #include "mbed.h" 00005 00006 /** Generates a tone with a buzzer, based on a PwmOut 00007 * The class use a timeout to switch off the sound - it is not blocking while making noise 00008 * 00009 * Example: 00010 * @code 00011 * // Beep at 2kHz for 0.5 seconds 00012 * #include "mbed.h" 00013 * #include "Beep.h" 00014 * 00015 * Beep buzzer(p21); 00016 * 00017 * int main() { 00018 * ... 00019 * buzzer.beep(2000,0.5); 00020 * ... 00021 * } 00022 * @endcode 00023 */ 00024 class Beep { 00025 00026 public: 00027 00028 /** Create a Beep object connected to the specified PwmOut pin 00029 * 00030 * @param pin PwmOut pin to connect to 00031 */ 00032 Beep(PinName pin); 00033 00034 /** Beep with given frequency and duration. 00035 * 00036 * @param frequency - the frequency of the tone in Hz 00037 * @param time - the duration of the tone in seconds 00038 */ 00039 void beep(float frequency, float time); 00040 00041 /** stop the beep instantaneously. Not typically needed, but here just in case 00042 */ 00043 void nobeep(); 00044 00045 private : 00046 PwmOut _pwm; 00047 Timeout toff; 00048 }; 00049 #endif
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