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Removed all traces of the parameters on the POGSAG config message

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Left in the message for the moment, because there are likely to be parameters needed at some point.
This commit is contained in:
heurist1
2021-10-22 18:11:50 +01:00
parent 6ef24ce71c
commit 318720f364
8 changed files with 20 additions and 85 deletions
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3
firmware/baseband/extract_frame_pager.cpp
View File

@@ -94,9 +94,8 @@ void extract_frame_pager::resetVals()
// ====================================================================
//
// ====================================================================
void extract_frame_pager::setParams(long a_samplesPerSec, long a_maxBaud, long a_minBaud, long maxRunOfSameValue)
void extract_frame_pager::setFrameExtractParams(long a_samplesPerSec, long a_maxBaud, long a_minBaud, long maxRunOfSameValue)
{
m_samplesPerSec = a_samplesPerSec;
m_minSymSamples_1024 = (uint32_t)(1024.0f * (float)a_samplesPerSec / (float)a_maxBaud);
m_maxSymSamples_1024 = (uint32_t)(1024.0f*(float)a_samplesPerSec / (float)a_minBaud);

4
firmware/baseband/extract_frame_pager.hpp
View File

@@ -23,6 +23,8 @@
#include <bitset>
using namespace std;
// This class extracts a POCSAG message from a FM demodulated sample stream
// TODO extend to also process FLEX frames
#define MAX_CODEWORDS (16)
class extract_frame_pager
{
@@ -41,7 +43,7 @@ public:
void resetVals();
void setParams(long a_samplesPerSec, long a_maxBaud = 8000, long a_minBaud = 200, long maxRunOfSameValue = 32);
void setFrameExtractParams(long a_samplesPerSec, long a_maxBaud = 8000, long a_minBaud = 200, long maxRunOfSameValue = 32);
int processDemodulatedSamples(float * sampleBuff, int noOfSamples);
int extractFrames();

47
firmware/baseband/proc_pocsag.cpp
View File

@@ -63,28 +63,7 @@ int POCSAGProcessor::OnDataFrame(int len, int baud)
{
if (len > 0)
{
if (baud > 492 && baud < 542)
{
bitrate = pocsag::BitRate::FSK512;
}
else if (baud > 1000 && baud < 1400)
{
bitrate = pocsag::BitRate::FSK1200;
}
else if (baud > 2300 && baud < 2500)
{
bitrate = pocsag::BitRate::FSK2400;
}
else if (baud > 3100 && baud < 3300)
{
bitrate = pocsag::BitRate::FSK3200;
}
else
{
bitrate = pocsag::BitRate::UNKNOWN;
}
packet.set_bitrate(bitrate);
packet.set_bitrate(baud);
packet.set_flag(pocsag::PacketFlag::NORMAL);
packet.set_timestamp(Timestamp::now());
const POCSAGPacketMessage message(packet);
@@ -93,14 +72,6 @@ int POCSAGProcessor::OnDataFrame(int len, int baud)
return 0;
}
void POCSAGProcessor::push_packet(pocsag::PacketFlag flag) {
packet.set_bitrate(bitrate);
packet.set_flag(flag);
packet.set_timestamp(Timestamp::now());
const POCSAGPacketMessage message(packet);
shared_memory.application_queue.push(message);
}
void POCSAGProcessor::on_message(const Message* const message) {
if (message->id == Message::ID::POCSAGConfigure)
configure(*reinterpret_cast<const POCSAGConfigureMessage*>(message));
@@ -122,19 +93,15 @@ void POCSAGProcessor::configure(const POCSAGConfigureMessage& message) {
decim_1.configure(taps_11k0_decim_1.taps, 131072);
channel_filter.configure(taps_11k0_channel.taps, 2);
demod.configure(demod_input_fs, 4500);
smooth.SetSize(9);
// Smoothing should be roughly sample rate over max baud
// 24k / 3.2k is 7.5
smooth.SetSize(8);
audio_output.configure(false);
bitrate = message.bitrate;
phase = message.phase;
sphase_delta = 0x10000u * bitrate / POCSAG_AUDIO_RATE;
sphase_delta_half = sphase_delta / 2; // Just for speed
sphase_delta_eighth = sphase_delta / 8;
rx_state = WAITING;
setParams(demod_input_fs, 6000, 300, 32);
// Set up the frame extraction, limits of baud
setFrameExtractParams(demod_input_fs, 4000, 300, 32);
// Mark the class as ready to accept data
configured = true;
}

29
firmware/baseband/proc_pocsag.hpp
View File

@@ -118,6 +118,9 @@ public:
// --------------------------------------------------
// Class to process base band data to pocsag frames
// --------------------------------------------------
class POCSAGProcessor : public BasebandProcessor, extract_frame_pager {
public:
void execute(const buffer_c8_t& buffer) override;
@@ -128,17 +131,6 @@ public:
virtual int OnDataWord(uint32_t word, int pos);
private:
enum rx_states {
WAITING = 0,
PREAMBLE = 32,
SYNC = 64,
//LOSING_SYNC = 65,
//LOST_SYNC = 66,
//ADDRESS = 67,
//MESSAGE = 68,
//END_OF_MESSAGE = 69
};
static constexpr size_t baseband_fs = 3072000;
BasebandThread baseband_thread { baseband_fs, this, NORMALPRIO + 20, baseband::Direction::Receive };
@@ -163,24 +155,9 @@ private:
AudioOutput audio_output { };
uint32_t sync_timeout { 0 };
uint32_t msg_timeout { 0 };
uint32_t slicer_sr { 0 };
uint32_t sphase { 0 };
uint32_t sphase_delta { 0 };
uint32_t sphase_delta_half { 0 };
uint32_t sphase_delta_eighth { 0 };
uint32_t rx_data { 0 };
uint32_t rx_bit { 0 };
bool configured = false;
rx_states rx_state { WAITING };
pocsag::BitRate bitrate { pocsag::BitRate::FSK1200 };
bool phase;
uint32_t codeword_count { 0 };
pocsag::POCSAGPacket packet { };
void push_packet(pocsag::PacketFlag flag);
void configure(const POCSAGConfigureMessage& message);
};