sensor-watch/movement/lib/morsecalc/morsecode.c
Christian Chapman 0a836cecea
Morsecalc refactor (#229)
* Added Morse code based RPN calculator

* added manual and memory register

* fixed morsecalc negative indicator, edited header comment

* adjusted stack display controls

* Fixed warnings. Added calculator token aliasing ability. Added binary shorthand for numeral entry. Extended morse code binary tree.

* ui tweaks

* Update movement_config.h

* silence warning

* Reorganized codebase and simplified morse code reading routines.

* added 'quit if submission is empty' behavior

* reverted rules.mk change for merge into main

* corrected timeout behavior

* consolidated morsecode lib into one file; deleted old mc.c mc.h

* consolidated morsecode lib into one file; deleted old mc.c mc.h

* removed specious null in morsecode bintree string

---------

Co-authored-by: Christian Chapman <user@debian>
Co-authored-by: joeycastillo <joeycastillo@utexas.edu>
2023-04-16 10:01:03 -04:00

55 lines
2.2 KiB
C

/*
* 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.
*/
#ifndef MORSECODE_
#define MORSECODE_
/*
* MC International Morse Code binary tree
* Levels of the tree are concatenated.
* '.' = 0 and '-' = 1.
*
* 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 MORSECODE_TREE[] = " 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";
/* mc_input Read an input into a morse code buffer
* Input: mc = index of MORSECODE_TREE[]
* len = max morse code char length
* in = character to read into buffer (0='.', 1='-', ignored otherwise).
* If the buffer is full, reset it instead of entering the new character.
*/
static void morsecode_input(unsigned int *mc, unsigned int len, char in) {
if(*mc >= (unsigned int) ((1<<len)-1)) *mc = 0;
else if((in == 0) | (in == 1)) *mc = (*mc)*2+in+1;
return;
}
#endif