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Diffstat (limited to 'movement/lib/morsecalc/mc.c')
-rw-r--r-- | movement/lib/morsecalc/mc.c | 66 |
1 files changed, 0 insertions, 66 deletions
diff --git a/movement/lib/morsecalc/mc.c b/movement/lib/morsecalc/mc.c deleted file mode 100644 index 94f6511b..00000000 --- a/movement/lib/morsecalc/mc.c +++ /dev/null @@ -1,66 +0,0 @@ -/* - * 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. - */ - - -#include <string.h> -#include "mc.h" - -/* mc_reset Initialize or reset an MC buffer - * Input: mc = location of buffer to reset - */ -void mc_reset(mc_state_t * mc) { - memset(mc->b, '\0', BUFFLEN*sizeof(mc->b[0])); - mc->bidx = 0; - return; - return; -} - -/* mc_input Read an input into a morse code buffer - * Input: mc = buffer to read into - * c = character to read into buffer ('.' or '-', ignored otherwise). - * If the buffer is full, reset it instead of entering the new character. - */ -void mc_input(mc_state_t * mc, char c) { - if(mc->bidx >= BUFFLEN) mc_reset(mc); - else if( ('.' == c) || ('-' == c) ) { - mc->b[mc->bidx] = c; - mc->bidx++; - } - return; -} - -/* mc_dec Decode a Morse code character (descend MC_DEC_KEY[]) - * Input: b = BUFFLEN-length char array with '.'s and '-'s - * Output: c = Character b represents, or '\0' if not a Morse code. - */ -char mc_dec(char b[BUFFLEN]) { - uint8_t pos = 1; // Binary tree position ('.'=0; '-'=1) - for(uint8_t idx=0; idx<BUFFLEN; idx++) { - if('.' == b[idx]) pos = 2*pos; // Descend in . direction - else if('-' == b[idx]) pos = 2*pos+1; // Descend in - direction - else break; // End of morse code segment; finished descending - } - return MC_DEC_KEY[pos-1]; -} - |