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moved extract frame back into proc_pocsag

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This commit is contained in:
heurist1
2021-11-07 09:00:00 +00:00
parent 318720f364
commit 40654aba55
5 changed files with 496 additions and 559 deletions
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74
firmware/baseband/proc_pocsag.hpp
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@@ -33,7 +33,6 @@
#include "dsp_demodulate.hpp"
#include "pocsag_packet.hpp"
#include "extract_frame_pager.hpp"
#include "pocsag.hpp"
#include "message.hpp"
@@ -41,8 +40,11 @@
#include "portapack_shared_memory.hpp"
#include <cstdint>
#include <bitset>
using namespace std;
// Class used to smooth demodulated waveform prior to decoding
// -----------------------------------------------------------
template <class ValType, class CalcType>
class SmoothVals
{
@@ -121,14 +123,15 @@ public:
// --------------------------------------------------
// Class to process base band data to pocsag frames
// --------------------------------------------------
class POCSAGProcessor : public BasebandProcessor, extract_frame_pager {
class POCSAGProcessor : public BasebandProcessor{
public:
void execute(const buffer_c8_t& buffer) override;
void on_message(const Message* const message) override;
virtual int OnDataFrame(int len, int baud);
virtual int OnDataWord(uint32_t word, int pos);
int OnDataFrame(int len, int baud);
int OnDataWord(uint32_t word, int pos);
private:
static constexpr size_t baseband_fs = 3072000;
@@ -157,8 +160,65 @@ private:
bool configured = false;
pocsag::POCSAGPacket packet { };
void configure(const POCSAGConfigureMessage& message);
void configure();
// ----------------------------------------
// Frame extractraction methods and members
// ----------------------------------------
private:
void initFrameExtraction();
struct FIFOStruct {
unsigned long codeword;
int numBits;
};
#define BIT_BUF_SIZE (64)
void resetVals();
void setFrameExtractParams(long a_samplesPerSec, long a_maxBaud = 8000, long a_minBaud = 200, long maxRunOfSameValue = 32);
int processDemodulatedSamples(float * sampleBuff, int noOfSamples);
int extractFrames();
void storeBit();
short getBit();
int getNoOfBits();
uint32_t getRate();
uint32_t m_averageSymbolLen_1024{0};
uint32_t m_lastStableSymbolLen_1024{0};
uint32_t m_samplesPerSec{0};
uint32_t m_goodTransitions{0};
uint32_t m_badTransitions{0};
uint32_t m_sampleNo{0};
float m_sample{0};
float m_valMid{0.0f};
float m_lastSample{0.0f};
uint32_t m_lastTransPos_1024{0};
uint32_t m_lastSingleBitPos_1024{0};
uint32_t m_nextBitPosInt{0}; // Integer rounded up version to save on ops
uint32_t m_nextBitPos_1024{0};
uint32_t m_lastBitPos_1024{0};
uint32_t m_shortestGoodTrans_1024{0};
uint32_t m_minSymSamples_1024{0};
uint32_t m_maxSymSamples_1024{0};
uint32_t m_maxRunOfSameValue{0};
bitset<(size_t)BIT_BUF_SIZE> m_bits{0};
long m_bitsStart{0};
long m_bitsEnd{0};
FIFOStruct m_fifo{0,0};
bool m_gotSync{false};
int m_numCode{0};
bool m_inverted{false};
};