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RFID tracking with mbed & RS-EDP reference design
Dependencies: RWDModule mbed SDCard
Diff: ui/beep.cpp
- Revision:
- 0:fd63457452f4
diff -r 000000000000 -r fd63457452f4 ui/beep.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/ui/beep.cpp Wed Jul 28 11:02:36 2010 +0000 @@ -0,0 +1,75 @@ +/* +Copyright (c) 2010 ARM Limited + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. +*/ + +#include "mbed.h" +#include "beep.h" + +Beep::Beep(PinName pin) : m_ticker(), m_timeout(), m_out(pin) +{ + m_part = NULL; + m_pos = 0; +} + +Beep::~Beep() +{ + +} + +//Tones data is { freq1 (Hz), length1 (s), ... } +//For a pause, frequency is set to 0 +//If length=0, end of tone +const float Beep::Tones[][8] = { {523.25, 0.025, 783.99, 0.075, 0, 0}, //TONE_OK, + {440, 0.050, 0, 0}, //TONE_INFO, + {220, 0.100, 0, 0}, //TONE_WARN, + {110, 0.250, 0, 0} //TONE_ERR + }; + +void Beep::beep(BEEP_TONE tone) //New beep +{ + m_ticker.detach(); //Stop previous beep is existing + m_timeout.detach(); + m_part = (float*) Beep::Tones[tone]; //Select tone buf + m_pos = 0; + beepNote(); //Start with first note +} + +void Beep::beepNote() +{ + float freq = m_part[m_pos]; //Setup frequency and length + float len = m_part[m_pos+1]; + m_pos+=2; + if(len==0) + beepDone(); + m_timeout.attach(this, &Beep::beepDone, len); //Setup timeout for end of note + if(freq>0) + m_ticker.attach(this, &Beep::beepTick, .5/freq); //Setup ticker for pin toggling at right freq +} + +void Beep::beepTick() +{ + m_out.write(!m_out.read()); //Toggle output pin +} + +void Beep::beepDone() +{ + m_ticker.detach(); //Note is done, stop toggling output pin +} \ No newline at end of file