![](/media/cache/profiles/2012_sf_avc_095.jpg.50x50_q85.jpg)
Code for autonomous rover for Sparkfun AVC. DataBus won 3rd in 2012 and the same code was used on Troubled Child, a 1986 Jeep Grand Wagoneer to win 1st in 2014.
Dependencies: mbed Watchdog SDFileSystem DigoleSerialDisp
UI/Beep/Beep.cpp@25:bb5356402687, 2018-11-30 (annotated)
- Committer:
- shimniok
- Date:
- Fri Nov 30 16:11:53 2018 +0000
- Revision:
- 25:bb5356402687
- Parent:
- 23:a34af501ea89
Initial publish of revised version.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
shimniok | 0:a6a169de725f | 1 | #include "mbed.h" |
shimniok | 0:a6a169de725f | 2 | #include "Beep.h" |
shimniok | 0:a6a169de725f | 3 | |
shimniok | 0:a6a169de725f | 4 | /** Create a Beep object connected to the specified PwmOut pin |
shimniok | 0:a6a169de725f | 5 | * |
shimniok | 0:a6a169de725f | 6 | * @param pin PwmOut pin to connect to |
shimniok | 0:a6a169de725f | 7 | */ |
shimniok | 0:a6a169de725f | 8 | Beep::Beep(PinName pin) : _pwm(pin) { |
shimniok | 0:a6a169de725f | 9 | _pwm.write(0.0); // after creating it have to be off |
shimniok | 0:a6a169de725f | 10 | } |
shimniok | 0:a6a169de725f | 11 | |
shimniok | 0:a6a169de725f | 12 | /** Stop the beep instantaneously. |
shimniok | 0:a6a169de725f | 13 | */ |
shimniok | 0:a6a169de725f | 14 | void Beep::nobeep() { |
shimniok | 0:a6a169de725f | 15 | _pwm.write(0.0); |
shimniok | 0:a6a169de725f | 16 | } |
shimniok | 0:a6a169de725f | 17 | |
shimniok | 0:a6a169de725f | 18 | /** Beep with given frequency and duration. |
shimniok | 0:a6a169de725f | 19 | * |
shimniok | 0:a6a169de725f | 20 | * @param frequency - the frequency of the tone in Hz |
shimniok | 0:a6a169de725f | 21 | * @param time - the duration of the tone in seconds |
shimniok | 0:a6a169de725f | 22 | */ |
shimniok | 0:a6a169de725f | 23 | |
shimniok | 0:a6a169de725f | 24 | void Beep::beep(float freq, float time) { |
shimniok | 0:a6a169de725f | 25 | |
shimniok | 0:a6a169de725f | 26 | _pwm.period(1.0/freq); |
shimniok | 0:a6a169de725f | 27 | _pwm.write(0.5); // 50% duty cycle - beep on |
shimniok | 23:a34af501ea89 | 28 | toff.attach(callback(this, &Beep::nobeep), time); // time to off |
shimniok | 0:a6a169de725f | 29 | } |
shimniok | 0:a6a169de725f | 30 | |
shimniok | 0:a6a169de725f | 31 | |
shimniok | 0:a6a169de725f | 32 | |
shimniok | 0:a6a169de725f | 33 |