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First changes for correlation of D-Star.

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This commit is contained in:
Jonathan Naylor
2017-07-02 17:57:17 +01:00
parent ae9e35ccad
commit 5d74c2f7bf
3 changed files with 145 additions and 78 deletions
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DStarRX.h
+18 -9
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@@ -37,13 +37,19 @@ public:
void reset();
private:
uint32_t m_pll;
bool m_prev;
DSRX_STATE m_rxState;
uint32_t m_patternBuffer;
uint8_t m_rxBuffer[100U];
unsigned int m_rxBufferBits;
unsigned int m_dataBits;
uint32_t m_bitBuffer[DSTAR_RADIO_BIT_LENGTH];
q15_t m_buffer[DSTAR_FEC_SECTION_LENGTH_SAMPLES];
uint16_t m_bitPtr;
uint16_t m_dataPtr;
uint16_t m_startPtr;
uint16_t m_endPtr;
uint16_t m_minSyncPtr;
uint16_t m_maxSyncPtr;
uint16_t m_syncPtr;
q31_t m_maxCorr;
uint16_t m_lostCount;
uint8_t m_countdown;
unsigned int m_mar;
int m_pathMetric[4U];
unsigned int m_pathMemory0[42U];
@@ -56,9 +62,12 @@ private:
arm_biquad_casd_df1_inst_q31 m_dcFilter;
q31_t m_dcState[4];
void processNone(bool bit);
void processHeader(bool bit);
void processData(bool bit);
void processNone(q15_t sample);
void processHeader(q15_t sample);
void processData(q15_t sample);
bool correlateFrameSync();
bool correlateDataSync();
void samplesToBits(uint16_t start, uint16_t count, uint8_t* buffer, uint16_t offset);
void writeRSSIHeader(unsigned char* header);
void writeRSSIData(unsigned char* data);
bool rxHeader(uint8_t* in, uint8_t* out);