morsegenerator.cpp

00001 #include "morsegenerator.h"
00002 
00003 
00004 MorseGenerator::MorseGenerator(callback_type _callback) {
00005     generate_morse_map();
00006     callback = _callback;
00007 }
00008 
00009 void MorseGenerator::generate_morse_map() {
00010     add_mappings("ABCDEFGHIJKLMNOPQRSTUVWXYZ", MORSE_LETTERS);  
00011     add_mappings("1234567890", MORSE_NUMBERS);
00012 }
00013 
00014 void MorseGenerator::add_mappings(string morse_chars, const string morse_codes[]) {
00015     for (int i=0; i < morse_chars.length(); i++) {
00016         morse_map.insert(MapType::value_type(morse_chars[i], morse_codes[i]));
00017     }
00018 }
00019 
00020 void MorseGenerator::transmit(string message) {
00021     for (int i=0; i < message.length(); i++) {
00022         if (strncmp(&message[i], " ", 1) != 0) {
00023             transmit(message[i]);                
00024         }
00025         wait_ms(DIT_MS * 7);
00026     }
00027 }
00028 
00029 void MorseGenerator::transmit(char letter) {
00030     int d;
00031     string code = morse_map[letter];
00032 
00033     for (int i=0; i < code.length(); i++) {
00034         if (strncmp(&code[i], ".", 1) == 0) {
00035             d = 1;
00036         } else {
00037             d = 3;
00038         }
00039         callback(1);
00040         wait_ms(DIT_MS * d);
00041         callback(0);
00042         wait_ms(DIT_MS);
00043     }
00044 }