Marco Perciavalle / Mbed OS Morse

Encoding messsages, continuously written on serial terminal, in Morse code. Resulting code is played by a buzzer. Please, use local echo on terminal for more impressive experience. To verify coded messages, there are some app for smartphone.

Dependencies:   FIFO

Fork of Morse by Romain Berrada

Morse.h@2:39d67345f7b3, 2018-02-03 (annotated)

Committer:
marcoperciavalle
Date:
Sat Feb 03 11:45:23 2018 +0000
Revision:
2:39d67345f7b3
Parent:
1:84ef66bf435d 
Encoding messsages, continuously written on serial terminal, in Morse code. Resulting code is played by a buzzer. ; Please, use local echo on terminal for more impressive experience. To verify coded messages, there are some app for smartphone.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
marcoperciavalle 2:39d67345f7b3 1 /*
marcoperciavalle 2:39d67345f7b3 2 INTERNATIONAL MORSE CODE - recommended characters and spacing definitions from:
marcoperciavalle 2:39d67345f7b3 3 http://www.itu.int/rec/R-REC-M.1677-1-200910-I/
marcoperciavalle 2:39d67345f7b3 4
marcoperciavalle 2:39d67345f7b3 5 SPACING IMPLEMENTATION:
marcoperciavalle 2:39d67345f7b3 6 dot = "dit" = [.] = 1
marcoperciavalle 2:39d67345f7b3 7 dash = "dah" = [-] = 3
marcoperciavalle 2:39d67345f7b3 8 Spacing within character = 0 (This is pre-inserted for characters in the switch statement below.)
marcoperciavalle 2:39d67345f7b3 9 Spacing between letters = 000 (3 zeros; resolved in main.cpp)
marcoperciavalle 2:39d67345f7b3 10 Spacing between words = 0000000 (7 zeros; defined with keyboard [Space] button)
rominos2 1:84ef66bf435d 11 */
marcoperciavalle 2:39d67345f7b3 12
marcoperciavalle 2:39d67345f7b3 13 static char* EncodeMorse(char character)
marcoperciavalle 2:39d67345f7b3 14 {
marcoperciavalle 2:39d67345f7b3 15 int ascii = character; // char to int
marcoperciavalle 2:39d67345f7b3 16
marcoperciavalle 2:39d67345f7b3 17 switch(ascii)
marcoperciavalle 2:39d67345f7b3 18 {
marcoperciavalle 2:39d67345f7b3 19 case 8: return "101010101010101"; // [Backspace] (8 dots)
marcoperciavalle 2:39d67345f7b3 20 case 32: return "0000000"; // [Space]
marcoperciavalle 2:39d67345f7b3 21 case 34: return "10301010301"; // ["] (quotation mark)
marcoperciavalle 2:39d67345f7b3 22 case 39: return "10303030301"; // ['] (apostrophe)
marcoperciavalle 2:39d67345f7b3 23 case 40: return "301030301"; // [(]
marcoperciavalle 2:39d67345f7b3 24 case 41: return "30103030103"; // [)]
marcoperciavalle 2:39d67345f7b3 25 case 43: return "103010301"; // [+]
marcoperciavalle 2:39d67345f7b3 26 case 44: return "30301010303"; // [,] (comma)
marcoperciavalle 2:39d67345f7b3 27 case 45: return "30101010103"; // [-]
marcoperciavalle 2:39d67345f7b3 28 case 46: return "10301030103"; // [.] (period)
marcoperciavalle 2:39d67345f7b3 29 case 47: return "301010301"; // [/]
marcoperciavalle 2:39d67345f7b3 30 case 48: return "303030303"; // 0
marcoperciavalle 2:39d67345f7b3 31 case 49: return "103030303"; // 1
marcoperciavalle 2:39d67345f7b3 32 case 50: return "101030303"; // 2
marcoperciavalle 2:39d67345f7b3 33 case 51: return "101010303"; // 3
marcoperciavalle 2:39d67345f7b3 34 case 52: return "101010103"; // 4
marcoperciavalle 2:39d67345f7b3 35 case 53: return "101010101"; // 5
marcoperciavalle 2:39d67345f7b3 36 case 54: return "301010101"; // 6
marcoperciavalle 2:39d67345f7b3 37 case 55: return "303010101"; // 7
marcoperciavalle 2:39d67345f7b3 38 case 56: return "303030101"; // 8
marcoperciavalle 2:39d67345f7b3 39 case 57: return "303030301"; // 9
marcoperciavalle 2:39d67345f7b3 40 case 58: return "30303010101"; // [:] (colon)
marcoperciavalle 2:39d67345f7b3 41 case 61: return "301010103"; // [=]
marcoperciavalle 2:39d67345f7b3 42 case 63: return "10103030101"; // [?]
marcoperciavalle 2:39d67345f7b3 43 case 64: return "10303010301"; // [@]
marcoperciavalle 2:39d67345f7b3 44 case 65: case 97: return "103"; // A,a
marcoperciavalle 2:39d67345f7b3 45 case 66: case 98: return "3010101"; // B,b
marcoperciavalle 2:39d67345f7b3 46 case 67: case 99: return "3010301"; // C,c
marcoperciavalle 2:39d67345f7b3 47 case 68: case 100: return "30101"; // D,d
marcoperciavalle 2:39d67345f7b3 48 case 69: case 101: return "1"; // E,e
marcoperciavalle 2:39d67345f7b3 49 case 70: case 102: return "1010301"; // F,f
marcoperciavalle 2:39d67345f7b3 50 case 71: case 103: return "30301"; // G,g
marcoperciavalle 2:39d67345f7b3 51 case 72: case 104: return "1010101"; // H,h
marcoperciavalle 2:39d67345f7b3 52 case 73: case 105: return "101"; // I,i
marcoperciavalle 2:39d67345f7b3 53 case 74: case 106: return "1030303"; // J,j
marcoperciavalle 2:39d67345f7b3 54 case 75: case 107: return "30103"; // K,k
marcoperciavalle 2:39d67345f7b3 55 case 76: case 108: return "1030101"; // L,l
marcoperciavalle 2:39d67345f7b3 56 case 77: case 109: return "303"; // M,m
marcoperciavalle 2:39d67345f7b3 57 case 78: case 110: return "301"; // N,n
marcoperciavalle 2:39d67345f7b3 58 case 79: case 111: return "30303"; // O,o
marcoperciavalle 2:39d67345f7b3 59 case 80: case 112: return "1030301"; // P,p
marcoperciavalle 2:39d67345f7b3 60 case 81: case 113: return "3030103"; // Q,q
marcoperciavalle 2:39d67345f7b3 61 case 82: case 114: return "10301"; // R,r
marcoperciavalle 2:39d67345f7b3 62 case 83: case 115: return "10101"; // S,s
marcoperciavalle 2:39d67345f7b3 63 case 84: case 116: return "3"; // T,t
marcoperciavalle 2:39d67345f7b3 64 case 85: case 117: return "10103"; // U,u
marcoperciavalle 2:39d67345f7b3 65 case 86: case 118: return "1010103"; // V,v
marcoperciavalle 2:39d67345f7b3 66 case 87: case 119: return "10303"; // W,w
marcoperciavalle 2:39d67345f7b3 67 case 88: case 120: return "3010103"; // X,x (also use for multiplication sign)
marcoperciavalle 2:39d67345f7b3 68 case 89: case 121: return "3010303"; // Y,y
marcoperciavalle 2:39d67345f7b3 69 case 90: case 122: return "3030101"; // Z,z
rominos2 1:84ef66bf435d 70
marcoperciavalle 2:39d67345f7b3 71 case 0: return "-1"; // null (for debugging)
marcoperciavalle 2:39d67345f7b3 72 case 10: return "-1"; // newline (for debugging)
rominos2 1:84ef66bf435d 73
marcoperciavalle 2:39d67345f7b3 74 default: return "";
rominos2 1:84ef66bf435d 75 }
marcoperciavalle 2:39d67345f7b3 76 }