kopia lustrzana https://github.com/bristol-seds/pico-tracker
40 wiersze
1.4 KiB
C
40 wiersze
1.4 KiB
C
/*
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* Bit-bangs RTTY
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* Copyright (C) 2014 Richard Meadows <richardeoin>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef RTTY_H
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#define RTTY_H
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/**
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* 50 baud RTTY
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*/
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#define RTTY_BITRATE 50
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#define RTTY_CHANNEL_SPACING 52 // Corresponds to 405.9Hz spacing
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void rtty_start(uint8_t data);
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void rtty_preamble(void);
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uint8_t rtty_tick(void);
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#endif /* RTTY_H */
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