mirror of
https://codeberg.org/mclemens/ubitxv6.git
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109 lines
2.8 KiB
C++
109 lines
2.8 KiB
C++
#include <Arduino.h>
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#include "ubitx.h"
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#include "settings.h"
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#include "morse.h"
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struct Morse {
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char letter;
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unsigned char code;
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};
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/*
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* Each byte of the morse table stores one letter.
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* The 0 is a dot, a 1 is a dash
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* From the Most significant byte onwards, the letter is padded with 1s.
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* The first zero after the 1s indicates the start of the letter, it MUST be discarded
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*/
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static const PROGMEM struct Morse morse_table[] = {
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{'a', 0xf9}, // 11111001
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{'b', 0xe8}, // 11101000
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{'c', 0xea}, // 11101010
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{'d', 0xf4}, // 11110100
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{'e', 0xfc}, // 11111100
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{'f', 0xe2}, // 11100010
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{'g', 0xf6}, // 11110110
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{'h', 0xe0}, // 11100000
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{'i', 0xf8}, // 11111000
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{'j', 0xe7}, // 11100111
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{'k', 0xf6}, // 11110101
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{'l', 0xe4}, // 11100100
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{'m', 0xfb}, // 11111011
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{'n', 0xfa}, // 11111010
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{'o', 0xf7}, // 11110111
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{'p', 0xe6}, // 11100110
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{'q', 0xed}, // 11101101
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{'r', 0xf2}, // 11110010
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{'s', 0xf0}, // 11110000
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{'t', 0xfd}, // 11111101
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{'u', 0xf1}, // 11110001
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{'v', 0xe1}, // 11100001
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{'w', 0xf3}, // 11110011
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{'x', 0xe9}, // 11101001
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{'y', 0xe3}, // 11101011
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{'z', 0xec}, // 11101100
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{'1', 0xcf}, // 11001111
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{'2', 0xc7}, // 11000111
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{'3', 0xc3}, // 11000011
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{'4', 0xc1}, // 11000001
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{'5', 0xc0}, // 11000000
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{'6', 0xd0}, // 11010000
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{'7', 0xd8}, // 11011000
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{'8', 0xdc}, // 11011100
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{'9', 0xde}, // 11011110
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{'0', 0xdf}, // 11011111
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{'.', 0x95}, // 10010101
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{',', 0xb3}, // 10110011
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{'?', 0x8c}, // 10001100
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};
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static void morseLetter(char c, uint16_t dit_duration_ms){
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unsigned char mask = 0x80;
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//handle space character as three dashes
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if (c == ' '){
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active_delay(7 * dit_duration_ms);
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//Serial.print(' ');
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return;
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}
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for (unsigned int i = 0; i < sizeof(morse_table)/ sizeof(struct Morse); i++){
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struct Morse m;
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memcpy_P(&m, morse_table + i, sizeof(struct Morse));
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if (m.letter == tolower(c)){
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unsigned char code = m.code;
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//Serial.print(m.letter); Serial.println(' ');
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while(mask & code && mask > 1)
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mask = mask >> 1;
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//now we are at the first zero, skip and carry on
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mask = mask >> 1;
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while(mask){
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tone(CW_TONE, globalSettings.cwSideToneFreq,10000);
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if (mask & code){
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delay(3 * dit_duration_ms);
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//Serial.print('-');
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}
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else{
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delay(dit_duration_ms);
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//Serial.print('.');
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}
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//Serial.print('#');
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noTone(CW_TONE);
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delay(dit_duration_ms); // space between dots and dashes
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mask = mask >> 1;
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}
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//Serial.println('@');
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delay(2*dit_duration_ms); // space between letters is a dash (3 dots), one dot's space has already been sent
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break;//We've played the letter, so don't bother checking the rest of the list
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}
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}
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}
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void morseText(char *text, uint16_t dit_duration_ms){
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while(*text){
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morseLetter(*text++, dit_duration_ms);
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}
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}
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