Michael Shimniok / Mbed 2 deprecated AVC_2012

Code for autonomous ground vehicle, Data Bus, 3rd place winner in 2012 Sparkfun AVC.

Dependencies:   Watchdog mbed Schedule SimpleFilter LSM303DLM PinDetect DebounceIn Servo

UI/Beep/Beep.cpp@0:826c6171fc1b, 2012-06-20 (annotated)

Committer:
shimniok
Date:
Wed Jun 20 14:57:48 2012 +0000
Revision:
0:826c6171fc1b
Updated documentation

Who changed what in which revision?

UserRevisionLine numberNew contents of line
shimniok 0:826c6171fc1b 1 #include "mbed.h"
shimniok 0:826c6171fc1b 2 #include "Beep.h"
shimniok 0:826c6171fc1b 3
shimniok 0:826c6171fc1b 4 /** Create a Beep object connected to the specified PwmOut pin
shimniok 0:826c6171fc1b 5 *
shimniok 0:826c6171fc1b 6 * @param pin PwmOut pin to connect to
shimniok 0:826c6171fc1b 7 */
shimniok 0:826c6171fc1b 8 Beep::Beep(PinName pin) : _pwm(pin) {
shimniok 0:826c6171fc1b 9 _pwm.write(0.0); // after creating it have to be off
shimniok 0:826c6171fc1b 10 }
shimniok 0:826c6171fc1b 11
shimniok 0:826c6171fc1b 12 /** Stop the beep instantaneously.
shimniok 0:826c6171fc1b 13 */
shimniok 0:826c6171fc1b 14 void Beep::nobeep() {
shimniok 0:826c6171fc1b 15 _pwm.write(0.0);
shimniok 0:826c6171fc1b 16 }
shimniok 0:826c6171fc1b 17
shimniok 0:826c6171fc1b 18 /** Beep with given frequency and duration.
shimniok 0:826c6171fc1b 19 *
shimniok 0:826c6171fc1b 20 * @param frequency - the frequency of the tone in Hz
shimniok 0:826c6171fc1b 21 * @param time - the duration of the tone in seconds
shimniok 0:826c6171fc1b 22 */
shimniok 0:826c6171fc1b 23
shimniok 0:826c6171fc1b 24 void Beep::beep(float freq, float time) {
shimniok 0:826c6171fc1b 25
shimniok 0:826c6171fc1b 26 _pwm.period(1.0/freq);
shimniok 0:826c6171fc1b 27 _pwm.write(0.5); // 50% duty cycle - beep on
shimniok 0:826c6171fc1b 28 toff.attach(this,&Beep::nobeep, time); // time to off
shimniok 0:826c6171fc1b 29 }
shimniok 0:826c6171fc1b 30
shimniok 0:826c6171fc1b 31
shimniok 0:826c6171fc1b 32
shimniok 0:826c6171fc1b 33