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Add work on AN printer

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This commit is contained in:
Carles Fernandez 2021-09-30 18:35:34 +02:00
parent d01f4cb86b
commit 5e0c99faee
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GPG Key ID: 4C583C52B0C3877D
2 changed files with 59 additions and 17 deletions
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67
src/algorithms/PVT/libs/an_packet_printer.cc
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@ -20,13 +20,13 @@
#include "an_packet_printer.h"
#include "rtklib_solver.h" // for Rtklib_Solver
#include <boost/date_time/posix_time/posix_time.hpp>
#include <glog/logging.h> // for DLOG
#include <cmath> // for std::sqrt, M_PI
#include <fcntl.h> // for fcntl
#include <iostream> // for std::cerr
#include <termios.h> // values for termios
#include <unistd.h> // for write(), read(), close()
#include <glog/logging.h> // for DLOG
#include <cmath> // for std::sqrt, M_PI
#include <fcntl.h> // for fcntl
#include <iostream> // for std::cerr
#include <limits> // std::numeric_limits
#include <termios.h> // values for termios
#include <unistd.h> // for write(), read(), close()
An_Packet_Printer::An_Packet_Printer(const std::string& an_dump_devname)
@ -82,6 +82,7 @@ void An_Packet_Printer::close_serial() const
}
}
/*
* @brief update_sdr_gnss_packet
* @param sdr_gnss_packet_t* Pointer to a structure that contains
@ -91,12 +92,10 @@ void An_Packet_Printer::close_serial() const
*/
void An_Packet_Printer::update_sdr_gnss_packet(sdr_gnss_packet_t* _packet, const Rtklib_Solver* const pvt, const std::map<int, Gnss_Synchro>& gnss_observables_map) const
{
const boost::posix_time::ptime time_origin(boost::gregorian::date(1970, 1, 1));
boost::date_time::time_duration unix_t = pvt->get_position_UTC_time() - time_origin;
std::map<int, Gnss_Synchro>::const_iterator gnss_observables_iter;
uint8_t num_gps_sats = 0;
uint8_t num_gal_sats = 0;
uint32_t microseconds = 0;
int index = 0;
for (gnss_observables_iter = gnss_observables_map.cbegin();
@ -113,6 +112,23 @@ void An_Packet_Printer::update_sdr_gnss_packet(sdr_gnss_packet_t* _packet, const
{
_packet->sats[index].prn = static_cast<uint8_t>(gnss_observables_iter->second.PRN);
_packet->sats[index].snr = static_cast<uint8_t>(gnss_observables_iter->second.CN0_dB_hz);
int16_t doppler = 0;
double Carrier_Doppler_hz = gnss_observables_iter->second.CN0_dB_hz;
if (Carrier_Doppler_hz > static_cast<double>(std::numeric_limits<int16_t>::max()))
{
doppler = std::numeric_limits<int16_t>::max();
}
else if (Carrier_Doppler_hz < static_cast<double>(std::numeric_limits<int16_t>::min()))
{
doppler = std::numeric_limits<int16_t>::min();
}
else
{
doppler = static_cast<int16_t>(Carrier_Doppler_hz);
}
_packet->sats[index].doppler = doppler;
microseconds = static_cast<uint32_t>(static_cast<double>(gnss_observables_iter->second.Tracking_sample_counter) / static_cast<double>(gnss_observables_iter->second.fs)) * 1e6;
index++;
}
break;
@ -122,6 +138,23 @@ void An_Packet_Printer::update_sdr_gnss_packet(sdr_gnss_packet_t* _packet, const
{
_packet->sats[index].prn = static_cast<uint8_t>(gnss_observables_iter->second.PRN) + 100;
_packet->sats[index].snr = static_cast<uint8_t>(gnss_observables_iter->second.CN0_dB_hz);
int16_t doppler = 0;
double Carrier_Doppler_hz = gnss_observables_iter->second.CN0_dB_hz;
if (Carrier_Doppler_hz > static_cast<double>(std::numeric_limits<int16_t>::max()))
{
doppler = std::numeric_limits<int16_t>::max();
}
else if (Carrier_Doppler_hz < static_cast<double>(std::numeric_limits<int16_t>::min()))
{
doppler = std::numeric_limits<int16_t>::min();
}
else
{
doppler = static_cast<int16_t>(Carrier_Doppler_hz);
}
_packet->sats[index].doppler = doppler;
microseconds = static_cast<uint32_t>(static_cast<double>(gnss_observables_iter->second.Tracking_sample_counter) / static_cast<double>(gnss_observables_iter->second.fs)) * 1e6;
index++;
}
break;
@ -130,10 +163,11 @@ void An_Packet_Printer::update_sdr_gnss_packet(sdr_gnss_packet_t* _packet, const
}
}
}
_packet->nsvfix = static_cast<uint8_t>(pvt->get_num_valid_observations());
_packet->gps_satellites = num_gps_sats;
_packet->galileo_satellites = num_gal_sats;
_packet->microseconds = static_cast<uint32_t>(unix_t.total_microseconds());
_packet->microseconds = microseconds;
_packet->latitude = static_cast<double>(pvt->get_latitude()) * (M_PI / 180.0);
_packet->longitude = static_cast<double>(pvt->get_longitude()) * (M_PI / 180.0);
_packet->height = static_cast<double>(pvt->get_height());
@ -142,7 +176,12 @@ void An_Packet_Printer::update_sdr_gnss_packet(sdr_gnss_packet_t* _packet, const
_packet->velocity[2] = static_cast<float>(-pvt->get_rx_vel()[2]);
uint16_t status = 0;
// Clarify table
// Set 3D fix
status = status & 0b00000011; // set bit 0 and 1
// Set Doppler velocity valid
status = status & 0b00000100; // set bit 2
// Set Time valid
status = status & 0b00001000; // set bit 3
_packet->status = status;
}
@ -186,8 +225,10 @@ void An_Packet_Printer::encode_sdr_gnss_packet(sdr_gnss_packet_t* sdr_gnss_packe
offset += 1;
LSB_bytes_to_array(reinterpret_cast<uint8_t*>(&sdr_gnss_packet->sats[i].snr), offset, _packet->data, sizeof(sdr_gnss_packet->sats[i].snr));
offset += 1;
LSB_bytes_to_array(reinterpret_cast<uint8_t*>(&sdr_gnss_packet->sats[i].doppler), offset, _packet->data, sizeof(sdr_gnss_packet->sats[i].doppler));
offset += 2;
}
offset += 16;
offset += 4; // reserved
LSB_bytes_to_array(reinterpret_cast<uint8_t*>(&sdr_gnss_packet->status), offset, _packet->data, sizeof(sdr_gnss_packet->status));
}
an_packet_encode(_packet);

9
src/algorithms/PVT/libs/an_packet_printer.h
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@ -39,7 +39,7 @@ typedef struct
uint8_t nsvfix; // number of sats used in PVT fix
uint8_t gps_satellites; // number of tracked GPS satellites
uint8_t galileo_satellites; // number of tracked Galileo satellites
uint32_t microseconds; // ??
uint32_t microseconds; // from start of receiver operation
double latitude; // in [rad]
double longitude; // in [rad]
double height; // in [m]
@ -47,11 +47,12 @@ typedef struct
struct
{
uint8_t prn; // Galileo sats expressed as PRN + 100
uint8_t snr; // in [dB-Hz]
uint8_t prn; // PRN ID. Galileo sats expressed as PRN + 100
uint8_t snr; // in [dB-Hz]
int16_t doppler; // in [Hz], saturates at +/- 32767 Hz
} sats[6];
float reserved[4];
uint32_t reserved = 0;
uint16_t status;
} sdr_gnss_packet_t;