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Add the sync and RRC 0.5 data and code.

This commit is contained in:
Jonathan Naylor 2020-10-14 13:29:23 +01:00
parent 0334b5a791
commit f2d2033733
5 changed files with 15 additions and 15 deletions
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6
IO.cpp
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@ -33,9 +33,9 @@ static q15_t RRC_0_2_FILTER[] = {401, 104, -340, -731, -847, -553, 112, 909, 147
const uint16_t RRC_0_2_FILTER_LEN = 42U;
// Generated using rcosdesign(0.5, 8, 5, 'sqrt') in MATLAB
static q15_t RRC_0_5_FILTER[] = {401, 104, -340, -731, -847, -553, 112, 909, 1472, 1450, 683, -675, -2144, -3040, -2706, -770, 2667, 6995,
11237, 14331, 15464, 14331, 11237, 6995, 2667, -770, -2706, -3040, -2144, -675, 683, 1450, 1472, 909, 112,
-553, -847, -731, -340, 104, 401, 0};
static q15_t RRC_0_5_FILTER[] = {-147, -88, 72, 220, 223, 46, -197, -285, -79, 334, 623, 390, -498, -1691, -2363, -1556, 1284, 5872, 11033,
15109, 16656, 15109, 11033, 5872, 1284, -1556, -2363, -1691, -498, 390, 623, 334, -79, -285, -197, 46, 223,
220, 72, -88, -147, 0};
const uint16_t RRC_0_5_FILTER_LEN = 42U;
// Generated using rcosdesign(0.2, 8, 10, 'sqrt') in MATLAB

14
M17Defines.h
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@ -30,18 +30,18 @@ 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[] = {0xCDU, 0xF5U}; // XXX
const uint8_t M17_SYNC_BYTES[] = {0x32U, 0x43U};
const uint8_t M17_SYNC_BYTES_LENGTH = 2U;
const uint16_t M17_SYNC_BITS = 0xCDF5U; // XXX
const uint16_t M17_SYNC_BITS = 0x3243U;
// C D F 5 // XXX
// 11 00 11 01 11 11 01 01 // XXX
// -3 +1 -3 +3 -3 -3 +3 +3 // XXX
// 3 2 4 3
// 00 11 00 10 01 00 00 11
// +1 -3 +1 -1 +3 +1 +1 -3
const int8_t M17_SYNC_SYMBOLS_VALUES[] = {-3, +1, -3, +3, -3, -3, +3, +3}; // XXX
const int8_t M17_SYNC_SYMBOLS_VALUES[] = {+1, -3, +1, -1, +3, +1, +1, -3};
const uint16_t M17_SYNC_SYMBOLS = 0x014DU; // XXX
const uint8_t M17_SYNC_SYMBOLS = 0xAEU;
#endif

2
M17RX.cpp
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@ -204,7 +204,7 @@ void CM17RX::processData(q15_t sample)
bool CM17RX::correlateSync()
{
if (countBits16(m_bitBuffer[m_bitPtr] ^ M17_SYNC_SYMBOLS) <= MAX_SYNC_SYMBOLS_ERRS) {
if (countBits8(m_bitBuffer[m_bitPtr] ^ M17_SYNC_SYMBOLS) <= MAX_SYNC_SYMBOLS_ERRS) {
uint16_t ptr = m_dataPtr + M17_FRAME_LENGTH_SAMPLES - M17_SYNC_LENGTH_SAMPLES + M17_RADIO_SYMBOL_LENGTH;
if (ptr >= M17_FRAME_LENGTH_SAMPLES)
ptr -= M17_FRAME_LENGTH_SAMPLES;

2
M17RX.h
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@ -37,7 +37,7 @@ public:
private:
M17RX_STATE m_state;
uint16_t m_bitBuffer[M17_RADIO_SYMBOL_LENGTH];
uint8_t m_bitBuffer[M17_RADIO_SYMBOL_LENGTH];
q15_t m_buffer[M17_FRAME_LENGTH_SAMPLES];
uint16_t m_bitPtr;
uint16_t m_dataPtr;

6
M17TX.cpp
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@ -24,9 +24,9 @@
#include "M17Defines.h"
// Generated using rcosdesign(0.5, 8, 5, 'sqrt') in MATLAB
static q15_t RRC_0_5_FILTER[] = {0, 0, 0, 0, 850, 219, -720, -1548, -1795, -1172, 237, 1927, 3120, 3073, 1447, -1431, -4544, -6442,
-5735, -1633, 5651, 14822, 23810, 30367, 32767, 30367, 23810, 14822, 5651, -1633, -5735, -6442,
-4544, -1431, 1447, 3073, 3120, 1927, 237, -1172, -1795, -1548, -720, 219, 850}; // numTaps = 45, L = 5
static q15_t RRC_0_5_FILTER[] = {0, 0, 0, 0, -147, -88, 72, 220, 223, 46, -197, -285, -79, 334, 623, 390, -498, -1691, -2363, -1556,
1284, 5872, 11033, 15109, 16656, 15109, 11033, 5872, 1284, -1556, -2363, -1691, -498, 390, 623, 334,
-79, -285, -197, 46, 223, 220, 72, -88, -147}; // numTaps = 45, L = 5
const uint16_t RRC_0_5_FILTER_PHASE_LEN = 9U; // phaseLength = numTaps/L
const q15_t M17_LEVELA = 1683;