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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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M17RX.h
+5 -1
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@@ -27,6 +27,7 @@
enum M17RX_STATE {
M17RXS_NONE,
M17RXS_HEADER,
M17RXS_DATA
};
@@ -52,6 +53,7 @@ private:
q31_t m_maxCorr;
uint16_t m_lostCount;
uint8_t m_countdown;
M17RX_STATE m_nextState;
q15_t m_centre[16U];
q15_t m_centreVal;
q15_t m_threshold[16U];
@@ -61,10 +63,12 @@ private:
uint16_t m_rssiCount;
void processNone(q15_t sample);
void processHeader(q15_t sample);
void processData(q15_t sample);
bool correlateSync();
bool correlateSync(uint8_t syncSymbols, const int8_t* syncSymbolValues, const uint8_t* syncBytes);
void calculateLevels(uint16_t start, uint16_t count);
void samplesToBits(uint16_t start, uint16_t count, uint8_t* buffer, uint16_t offset, q15_t centre, q15_t threshold);
void writeRSSIHeader(uint8_t* data);
void writeRSSIData(uint8_t* data);
};