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hex_lut.h
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hex_lut.h
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/*
* File: hex_lut.h
* Author: Peter Thornton
* Purpose: Look Up Table (LUT) for two-character hex values
* Created on: 10/11/2020
*/
// This LUT is needed because the KPC-9612 Plus TNC at ground station can not
// run in transparent mode with UNPROTO AX.25, while the He-100 flight radio
// can not use anything but UNPROTO AX.25. So to send binary image data we need
// to use ascii representation. Hex values take 2 transmitted characters per
// binary byte, but that is better than sending decimal values, which could
// require three transmitted characters per byte.
// The LUT is used on the fly in the image dump routine to build each packet.
const char hex_lut[512] = {
'0','0', // 0
'0','1', // 1
'0','2', // 2
'0','3', // 3
'0','4', // 4
'0','5', // 5
'0','6', // 6
'0','7', // 7
'0','8', // 8
'0','9', // 9
'0','A', // 10
'0','B', // 11
'0','C', // 12
'0','D', // 13
'0','E', // 14
'0','F', // 15
'1','0', // 16
'1','1', // 17
'1','2', // 18
'1','3', // 19
'1','4', // 20
'1','5', // 21
'1','6', // 22
'1','7', // 23
'1','8', // 24
'1','9', // 25
'1','A', // 26
'1','B', // 27
'1','C', // 28
'1','D', // 29
'1','E', // 30
'1','F', // 31
'2','0', // 32
'2','1', // 33
'2','2', // 34
'2','3', // 35
'2','4', // 36
'2','5', // 37
'2','6', // 38
'2','7', // 39
'2','8', // 40
'2','9', // 41
'2','A', // 42
'2','B', // 43
'2','C', // 44
'2','D', // 45
'2','E', // 46
'2','F', // 47
'3','0', // 48
'3','1', // 49
'3','2', // 50
'3','3', // 51
'3','4', // 52
'3','5', // 53
'3','6', // 54
'3','7', // 55
'3','8', // 56
'3','9', // 57
'3','A', // 58
'3','B', // 59
'3','C', // 60
'3','D', // 61
'3','E', // 62
'3','F', // 63
'4','0', // 64
'4','1', // 65
'4','2', // 66
'4','3', // 67
'4','4', // 68
'4','5', // 69
'4','6', // 70
'4','7', // 71
'4','8', // 72
'4','9', // 73
'4','A', // 74
'4','B', // 75
'4','C', // 76
'4','D', // 77
'4','E', // 78
'4','F', // 79
'5','0', // 80
'5','1', // 81
'5','2', // 82
'5','3', // 83
'5','4', // 84
'5','5', // 85
'5','6', // 86
'5','7', // 87
'5','8', // 88
'5','9', // 89
'5','A', // 90
'5','B', // 91
'5','C', // 92
'5','D', // 93
'5','E', // 94
'5','F', // 95
'6','0', // 96
'6','1', // 97
'6','2', // 98
'6','3', // 99
'6','4', //100
'6','5', //101
'6','6', //102
'6','7', //103
'6','8', //104
'6','9', //105
'6','A', //106
'6','B', //107
'6','C', //108
'6','D', //109
'6','E', //110
'6','F', //111
'7','0', //112
'7','1', //113
'7','2', //114
'7','3', //115
'7','4', //116
'7','5', //117
'7','6', //118
'7','7', //119
'7','8', //120
'7','9', //121
'7','A', //122
'7','B', //123
'7','C', //124
'7','D', //125
'7','E', //126
'7','F', //127
'8','0', //128
'8','1', //129
'8','2', //130
'8','3', //131
'8','4', //132
'8','5', //133
'8','6', //134
'8','7', //135
'8','8', //136
'8','9', //137
'8','A', //138
'8','B', //139
'8','C', //140
'8','D', //141
'8','E', //142
'8','F', //143
'9','0', //144
'9','1', //145
'9','2', //146
'9','3', //147
'9','4', //148
'9','5', //149
'9','6', //150
'9','7', //151
'9','8', //152
'9','9', //153
'9','A', //154
'9','B', //155
'9','C', //156
'9','D', //157
'9','E', //158
'9','F', //159
'A','0', //160
'A','1', //161
'A','2', //162
'A','3', //163
'A','4', //164
'A','5', //165
'A','6', //166
'A','7', //167
'A','8', //168
'A','9', //169
'A','A', //170
'A','B', //171
'A','C', //172
'A','D', //173
'A','E', //174
'A','F', //175
'B','0', //176
'B','1', //177
'B','2', //178
'B','3', //179
'B','4', //180
'B','5', //181
'B','6', //182
'B','7', //183
'B','8', //184
'B','9', //185
'B','A', //186
'B','B', //187
'B','C', //188
'B','D', //189
'B','E', //190
'B','F', //191
'C','0', //192
'C','1', //193
'C','2', //194
'C','3', //195
'C','4', //196
'C','5', //197
'C','6', //198
'C','7', //199
'C','8', //200
'C','9', //201
'C','A', //202
'C','B', //203
'C','C', //204
'C','D', //205
'C','E', //206
'C','F', //207
'D','0', //208
'D','1', //209
'D','2', //210
'D','3', //211
'D','4', //212
'D','5', //213
'D','6', //214
'D','7', //215
'D','8', //216
'D','9', //217
'D','A', //218
'D','B', //219
'D','C', //220
'D','D', //221
'D','E', //222
'D','F', //223
'E','0', //224
'E','1', //225
'E','2', //226
'E','3', //227
'E','4', //228
'E','5', //229
'E','6', //230
'E','7', //231
'E','8', //232
'E','9', //233
'E','A', //234
'E','B', //235
'E','C', //236
'E','D', //237
'E','E', //238
'E','F', //239
'F','0', //240
'F','1', //241
'F','2', //242
'F','3', //243
'F','4', //244
'F','5', //245
'F','6', //246
'F','7', //247
'F','8', //248
'F','9', //249
'F','A', //250
'F','B', //251
'F','C', //252
'F','D', //253
'F','E', //254
'F','F' //255
};
// function prototypes