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/*
* MIT License
*
* Copyright (c) 2023 Christian Chapman
*
* 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.
*/
/* mc Morse code reading methods
*/
#include "stdint.h"
#define BUFFLEN 5
typedef struct {
char b[BUFFLEN];
uint8_t bidx;
} mc_state_t;
// MC_DEC_KEY represents a binary tree of International Morse Code.
// where '.' = 0 and '-' = 1. Levels of the tree are concatenated.
//
// Capitals denote special characters:
// C = Ch digraph
// V = VERIFY (ITU-R "UNDERSTOOD")
// R = REPEAT
// W = WAIT
// S = START TRANSMISSION
// E = END OF WORK
static const char MC_DEC_KEY[] = " etianmsurwdkgohvf\0l\0pjbxcyzq\0C\x35\x34V\x33\0R\0\x32W\0+\0\0\0\0\x31\x36=/\0\0S(\0\x37\0\0\0\x38\0\x39\x30\0\0\0\0\0E\0\0\0\0\0\0?_\0\0\0\0\"\0\0.\0\0\0\0@\0\0\0'\0\0-\0\0\0\0\0\0\0\0;!\0)\0\0\0\0\0,\0\0\0\0:\0\0\0\0\0\0\0";
void mc_reset(mc_state_t * mcb);
void mc_input(mc_state_t * mc, char c);
char mc_dec(char b[BUFFLEN]);
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