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Update for latest M17 specification.

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This commit is contained in:
Jonathan Naylor
2020-11-26 10:03:54 +00:00
parent 54f4dcabf0
commit 6d0335b357
6 changed files with 140 additions and 21 deletions
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M17Defines.h
+18 -7
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@@ -30,18 +30,29 @@ const unsigned int M17_SYNC_LENGTH_BITS = 16U;
const unsigned int M17_SYNC_LENGTH_SYMBOLS = M17_SYNC_LENGTH_BITS / 2U;
const unsigned int M17_SYNC_LENGTH_SAMPLES = M17_SYNC_LENGTH_SYMBOLS * M17_RADIO_SYMBOL_LENGTH;
const uint8_t M17_SYNC_BYTES[] = {0x32U, 0x43U};
const uint8_t M17_HEADER_SYNC_BYTES[] = {0x5DU, 0xDDU};
const uint8_t M17_DATA_SYNC_BYTES[] = {0xDDU, 0xDDU};
const uint8_t M17_SYNC_BYTES_LENGTH = 2U;
const uint16_t M17_SYNC_BITS = 0x3243U;
const uint16_t M17_HEADER_SYNC_BITS = 0x5DDDU;
const uint16_t M17_DAYA_SYNC_BITS = 0xDDDDU;
// 3 2 4 3
// 00 11 00 10 01 00 00 11
// +1 -3 +1 -1 +3 +1 +1 -3
// 5 D D D
// 01 01 11 01 11 01 11 01
// +3 +3 -3 +3 -3 +3 -3 +3
const int8_t M17_SYNC_SYMBOLS_VALUES[] = {+1, -3, +1, -1, +3, +1, +1, -3};
const int8_t M17_HEADER_SYNC_SYMBOLS_VALUES[] = {+3, +3, -3, +3, -3, +3, -3, +3};
const uint8_t M17_SYNC_SYMBOLS = 0xAEU;
const uint8_t M17_HEADER_SYNC_SYMBOLS = 0xD5U;
// D D D D
// 11 01 11 01 11 01 11 01
// -3 +3 -3 +3 -3 +3 -3 +3
const int8_t M17_DATA_SYNC_SYMBOLS_VALUES[] = {-3, +3, -3, +3, -3, +3, -3, +3};
const uint8_t M17_DATA_SYNC_SYMBOLS = 0x55U;
#endif