From 4d530b0ce4559f6402fb544f88ba89d8cac173bd Mon Sep 17 00:00:00 2001 From: Marc Majoral Date: Fri, 5 Apr 2019 15:59:40 +0200 Subject: [PATCH 01/12] updated fft-ifft ref exponents --- .../acquisition/adapters/galileo_e5a_pcps_acquisition_fpga.cc | 2 +- .../acquisition/adapters/gps_l1_ca_pcps_acquisition_fpga.cc | 2 +- .../acquisition/adapters/gps_l5i_pcps_acquisition_fpga.cc | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/src/algorithms/acquisition/adapters/galileo_e5a_pcps_acquisition_fpga.cc b/src/algorithms/acquisition/adapters/galileo_e5a_pcps_acquisition_fpga.cc index ed47a80ce..cd22b98f7 100644 --- a/src/algorithms/acquisition/adapters/galileo_e5a_pcps_acquisition_fpga.cc +++ b/src/algorithms/acquisition/adapters/galileo_e5a_pcps_acquisition_fpga.cc @@ -178,7 +178,7 @@ GalileoE5aPcpsAcquisitionFpga::GalileoE5aPcpsAcquisitionFpga(ConfigurationInterf acq_parameters.all_fft_codes = d_all_fft_codes_; // reference for the FPGA FFT-IFFT attenuation factor - acq_parameters.total_block_exp = configuration_->property(role + ".total_block_exp", 13); + acq_parameters.total_block_exp = configuration_->property(role + ".total_block_exp", 12); acq_parameters.num_doppler_bins_step2 = configuration_->property(role + ".second_nbins", 4); acq_parameters.doppler_step2 = configuration_->property(role + ".second_doppler_step", 125.0); diff --git a/src/algorithms/acquisition/adapters/gps_l1_ca_pcps_acquisition_fpga.cc b/src/algorithms/acquisition/adapters/gps_l1_ca_pcps_acquisition_fpga.cc index 9cb95ba34..29b5540be 100644 --- a/src/algorithms/acquisition/adapters/gps_l1_ca_pcps_acquisition_fpga.cc +++ b/src/algorithms/acquisition/adapters/gps_l1_ca_pcps_acquisition_fpga.cc @@ -158,7 +158,7 @@ GpsL1CaPcpsAcquisitionFpga::GpsL1CaPcpsAcquisitionFpga( acq_parameters.all_fft_codes = d_all_fft_codes_; // reference for the FPGA FFT-IFFT attenuation factor - acq_parameters.total_block_exp = configuration_->property(role + ".total_block_exp", 11); + acq_parameters.total_block_exp = configuration_->property(role + ".total_block_exp", 10); acq_parameters.num_doppler_bins_step2 = configuration_->property(role + ".second_nbins", 4); acq_parameters.doppler_step2 = configuration_->property(role + ".second_doppler_step", 125.0); diff --git a/src/algorithms/acquisition/adapters/gps_l5i_pcps_acquisition_fpga.cc b/src/algorithms/acquisition/adapters/gps_l5i_pcps_acquisition_fpga.cc index ceeaed722..d35cfa210 100644 --- a/src/algorithms/acquisition/adapters/gps_l5i_pcps_acquisition_fpga.cc +++ b/src/algorithms/acquisition/adapters/gps_l5i_pcps_acquisition_fpga.cc @@ -161,7 +161,7 @@ GpsL5iPcpsAcquisitionFpga::GpsL5iPcpsAcquisitionFpga( acq_parameters.all_fft_codes = d_all_fft_codes_; // reference for the FPGA FFT-IFFT attenuation factor - acq_parameters.total_block_exp = configuration_->property(role + ".total_block_exp", 11); + acq_parameters.total_block_exp = configuration_->property(role + ".total_block_exp", 12); acq_parameters.num_doppler_bins_step2 = configuration_->property(role + ".second_nbins", 4); acq_parameters.doppler_step2 = configuration_->property(role + ".second_doppler_step", 125.0); From 2da2fa12e318b31285c4fd860b917a4766d31542 Mon Sep 17 00:00:00 2001 From: Marc Majoral Date: Tue, 9 Apr 2019 11:23:30 +0200 Subject: [PATCH 02/12] removed some non-used variables and some non-used instructions. Changed the initialisation of d_current_prn_length_samples to vector_length, instead of T_prn_mod_samples --- .../gnuradio_blocks/dll_pll_veml_tracking_fpga.cc | 14 ++++---------- .../gnuradio_blocks/dll_pll_veml_tracking_fpga.h | 2 -- 2 files changed, 4 insertions(+), 12 deletions(-) diff --git a/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc b/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc index 360241991..aa94f69e7 100644 --- a/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc +++ b/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc @@ -369,7 +369,6 @@ dll_pll_veml_tracking_fpga::dll_pll_veml_tracking_fpga(const Dll_Pll_Conf_Fpga & d_carrier_phase_step_rad = 0.0; d_carrier_phase_rate_step_rad = 0.0; d_rem_code_phase_chips = 0.0; - d_last_prompt = gr_complex(0.0, 0.0); d_state = 0; // initial state: standby clear_tracking_vars(); @@ -648,13 +647,11 @@ void dll_pll_veml_tracking_fpga::run_dll_pll() { // Costas loop discriminator, insensitive to 180 deg phase transitions d_carr_phase_error_hz = pll_cloop_two_quadrant_atan(d_P_accu) / PI_2; - d_carr_error_hz = pll_cloop_two_quadrant_atan(d_P_accu) / PI_2; } else { // Secondary code acquired. No symbols transition should be present in the signal d_carr_phase_error_hz = pll_four_quadrant_atan(d_P_accu) / PI_2; - d_carr_error_hz = pll_four_quadrant_atan(d_P_accu) / PI_2; } if ((d_pull_in_transitory == true and trk_parameters.enable_fll_pull_in == true) or trk_parameters.enable_fll_steady_state) @@ -713,14 +710,12 @@ void dll_pll_veml_tracking_fpga::clear_tracking_vars() d_P_accu_old = gr_complex(0.0, 0.0); d_carr_phase_error_hz = 0.0; d_carr_freq_error_hz = 0.0; - d_carr_error_hz = 0.0; d_carr_error_filt_hz = 0.0; d_code_error_chips = 0.0; d_code_error_filt_chips = 0.0; d_current_symbol = 0; d_Prompt_circular_buffer.clear(); //d_Prompt_buffer_deque.clear(); - d_last_prompt = gr_complex(0.0, 0.0); d_carrier_phase_rate_step_rad = 0.0; d_code_phase_rate_step_chips = 0.0; d_carr_ph_history.clear(); @@ -740,6 +735,8 @@ void dll_pll_veml_tracking_fpga::update_tracking_vars() K_blk_samples = T_prn_samples + d_rem_code_phase_samples; //d_next_prn_length_samples = static_cast(std::floor(K_blk_samples)); // round to a discrete number of samples d_next_prn_length_samples = static_cast(std::floor(K_blk_samples)); // round to a discrete number of samples + //int32_t actual_prn_length_samples = static_cast(std::floor(K_blk_samples)); + //d_next_prn_length_samples = actual_prn_length_samples + (actual_prn_length_samples - d_current_prn_length_samples); //################### PLL COMMANDS ################################################# // carrier phase step (NCO phase increment per sample) [rads/sample] @@ -1338,9 +1335,6 @@ void dll_pll_veml_tracking_fpga::set_gnss_synchro(Gnss_Synchro *p_gnss_synchro) d_pull_in_transitory = true; - //d_Prompt_buffer_deque.clear(); - d_last_prompt = gr_complex(0.0, 0.0); - d_cloop = true; d_Prompt_circular_buffer.clear(); @@ -1440,7 +1434,8 @@ int dll_pll_veml_tracking_fpga::general_work(int noutput_items __attribute__((un d_acq_code_phase_samples = absolute_samples_offset; - d_current_prn_length_samples = round(T_prn_mod_samples); + //d_current_prn_length_samples = round(T_prn_mod_samples); + d_current_prn_length_samples = trk_parameters.vector_length; d_next_prn_length_samples = d_current_prn_length_samples; int32_t samples_offset = round(d_acq_code_phase_samples); @@ -1746,7 +1741,6 @@ void dll_pll_veml_tracking_fpga::run_state_2(Gnss_Synchro ¤t_synchro_data) d_VL_accu = gr_complex(0.0, 0.0); d_Prompt_circular_buffer.clear(); d_current_symbol = 0; - d_last_prompt = gr_complex(0.0, 0.0); //d_Prompt_buffer_deque.clear(); if (d_enable_extended_integration) diff --git a/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.h b/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.h index 349db24f0..288f3b09a 100644 --- a/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.h +++ b/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.h @@ -146,7 +146,6 @@ private: gr_complex d_P_accu_old; gr_complex d_L_accu; gr_complex d_VL_accu; - gr_complex d_last_prompt; gr_complex *d_Prompt_Data; @@ -173,7 +172,6 @@ private: double d_current_correlation_time_s; double d_carr_phase_error_hz; double d_carr_freq_error_hz; - double d_carr_error_hz; double d_carr_error_filt_hz; double d_code_error_chips; double d_code_error_filt_chips; From 19184da0f92890cd3dfd6a5ee38f5b7c78fff045 Mon Sep 17 00:00:00 2001 From: Marc Majoral Date: Tue, 9 Apr 2019 16:03:31 +0200 Subject: [PATCH 03/12] The FPGA multicorrelator interrupt is enabled only once when a satellite is assigned to a particular channel. Until now the interrupt was automatically disabled by the interrupt handler of the uio driver and the multicorrelator code had to re-enable it every time. This change saves CUP cycles for real-time operation. It requires that the code that disables the interrupt in the uio driver interrupt handler is commented out. --- .../tracking/libs/fpga_multicorrelator.cc | 27 ++++++++++++++----- 1 file changed, 20 insertions(+), 7 deletions(-) diff --git a/src/algorithms/tracking/libs/fpga_multicorrelator.cc b/src/algorithms/tracking/libs/fpga_multicorrelator.cc index f674da1d2..4847e8bf9 100644 --- a/src/algorithms/tracking/libs/fpga_multicorrelator.cc +++ b/src/algorithms/tracking/libs/fpga_multicorrelator.cc @@ -37,6 +37,7 @@ #include "fpga_multicorrelator.h" #include #include +//#include #include #include #include // for O_RDWR, O_RSYNC @@ -200,12 +201,16 @@ void Fpga_Multicorrelator_8sc::Carrier_wipeoff_multicorrelator_resampler( Fpga_Multicorrelator_8sc::fpga_launch_multicorrelator_fpga(); int32_t irq_count; ssize_t nb; + //auto start = std::chrono::system_clock::now(); nb = read(d_device_descriptor, &irq_count, sizeof(irq_count)); if (nb != sizeof(irq_count)) { std::cout << "Tracking_module Read failed to retrieve 4 bytes!" << std::endl; std::cout << "Tracking_module Interrupt number " << irq_count << std::endl; } + //auto end = std::chrono::system_clock::now(); + //std::chrono::duration elapsed_seconds = end - start; + //std::cout << "sleeping time : " << elapsed_seconds.count() << "s\n"; Fpga_Multicorrelator_8sc::read_tracking_gps_results(); } @@ -281,6 +286,14 @@ void Fpga_Multicorrelator_8sc::set_channel(uint32_t channel) { LOG(INFO) << "Test register sanity check success !"; } + + // enable interrupts + int32_t reenable = 1; + ssize_t nbytes = TEMP_FAILURE_RETRY(write(d_device_descriptor, reinterpret_cast(&reenable), sizeof(int32_t))); + if (nbytes != sizeof(int32_t)) + { + std::cerr << "Error launching the FPGA multicorrelator" << std::endl; + } } @@ -416,13 +429,13 @@ void Fpga_Multicorrelator_8sc::fpga_configure_signal_parameters_in_fpga(void) void Fpga_Multicorrelator_8sc::fpga_launch_multicorrelator_fpga(void) { - // enable interrupts - int32_t reenable = 1; - ssize_t nbytes = TEMP_FAILURE_RETRY(write(d_device_descriptor, reinterpret_cast(&reenable), sizeof(int32_t))); - if (nbytes != sizeof(int32_t)) - { - std::cerr << "Error launching the FPGA multicorrelator" << std::endl; - } + // // enable interrupts + // int32_t reenable = 1; + // ssize_t nbytes = TEMP_FAILURE_RETRY(write(d_device_descriptor, reinterpret_cast(&reenable), sizeof(int32_t))); + // if (nbytes != sizeof(int32_t)) + // { + // std::cerr << "Error launching the FPGA multicorrelator" << std::endl; + // } // writing 1 to reg 14 launches the tracking d_map_base[START_FLAG_ADDR] = 1; } From 91f509abf963aecfbcf7e4bc9faea4dd5b58d1dd Mon Sep 17 00:00:00 2001 From: Marc Majoral Date: Wed, 10 Apr 2019 11:31:34 +0200 Subject: [PATCH 04/12] write the code phase rate and the nco phase rate parameters in the FPGA --- .../acquisition/libs/fpga_acquisition.cc | 7 ++- .../tracking/libs/fpga_multicorrelator.cc | 45 ++++++++++++------- .../tracking/libs/fpga_multicorrelator.h | 7 +++ 3 files changed, 41 insertions(+), 18 deletions(-) diff --git a/src/algorithms/acquisition/libs/fpga_acquisition.cc b/src/algorithms/acquisition/libs/fpga_acquisition.cc index 29c8c0537..7a553cb00 100644 --- a/src/algorithms/acquisition/libs/fpga_acquisition.cc +++ b/src/algorithms/acquisition/libs/fpga_acquisition.cc @@ -53,6 +53,9 @@ #define MEM_LOCAL_CODE_WR_ENABLE 0x0C000000 // command to enable the ENA and WR pins of the internal memory of the multicorrelator #define POW_2_2 4 // 2^2 (used for the conversion of floating point numbers to integers) #define POW_2_31 2147483648 // 2^31 (used for the conversion of floating point numbers to integers) +#define ENABLE_INT_ON_RESET 2 // flag that causes the acquisition to trigger an interrupt when it is reset. It is used \ + // to avoid a potential deadlock caused by the SW waiting for an interrupt from the FPGA when the \ + // HW is reset #define SELECT_LSBits 0x0000FFFF // Select the 10 LSbits out of a 20-bit word #define SELECT_MSBbits 0xFFFF0000 // Select the 10 MSbits out of a 20-bit word @@ -311,7 +314,9 @@ void Fpga_Acquisition::close_device() void Fpga_Acquisition::reset_acquisition(void) { - d_map_base[8] = RESET_ACQUISITION; // writing a 2 to d_map_base[8] resets the multicorrelator + d_map_base[8] = RESET_ACQUISITION; // writing a 2 to d_map_base[8] resets the acquisition. This causes a reset of all + // the FPGA HW modules including the multicorrelators + d_map_base[14] = ENABLE_INT_ON_RESET; // enable int on reset } diff --git a/src/algorithms/tracking/libs/fpga_multicorrelator.cc b/src/algorithms/tracking/libs/fpga_multicorrelator.cc index 4847e8bf9..77febe6ca 100644 --- a/src/algorithms/tracking/libs/fpga_multicorrelator.cc +++ b/src/algorithms/tracking/libs/fpga_multicorrelator.cc @@ -59,7 +59,8 @@ #define LOCAL_CODE_FPGA_CLEAR_ADDRESS_COUNTER 0x10000000 #define LOCAL_CODE_FPGA_ENABLE_WRITE_MEMORY 0x0C000000 #define TEST_REGISTER_TRACK_WRITEVAL 0x55AA - +#define ENABLE_TRK_INT_ON_RESET 1 /* flag that causes the tracking HW accelerator to trigger an interrupt when it is reset. It is used \ + to avoid a potential deadlock caused by the SW waiting for an interrupt from the FPGA when the HW is reset */ #ifndef TEMP_FAILURE_RETRY #define TEMP_FAILURE_RETRY(exp) \ ({ \ @@ -182,19 +183,21 @@ void Fpga_Multicorrelator_8sc::update_local_code() void Fpga_Multicorrelator_8sc::Carrier_wipeoff_multicorrelator_resampler( - float rem_carrier_phase_in_rad, - float phase_step_rad, - float carrier_phase_rate_step_rad __attribute__((unused)), - float rem_code_phase_chips, - float code_phase_step_chips __attribute__((unused)), - float code_phase_rate_step_chips __attribute__((unused)), - int32_t signal_length_samples) + float rem_carrier_phase_in_rad, // nco phase initial position + float phase_step_rad, // nco phase step + float carrier_phase_rate_step_rad __attribute__((unused)), // nco phase step rate change + float rem_code_phase_chips, // code resampler initial position + float code_phase_step_chips __attribute__((unused)), // code resampler step + float code_phase_rate_step_chips __attribute__((unused)), // code resampler step rate + int32_t signal_length_samples) // number of samples { - d_rem_code_phase_chips = rem_code_phase_chips; - d_rem_carrier_phase_in_rad = rem_carrier_phase_in_rad; - d_code_phase_step_chips = code_phase_step_chips; - d_phase_step_rad = phase_step_rad; - d_correlator_length_samples = signal_length_samples; + d_rem_carrier_phase_in_rad = rem_carrier_phase_in_rad; // nco phase initial position + d_phase_step_rad = phase_step_rad; // nco phase step + d_carrier_phase_rate_step_rad = carrier_phase_rate_step_rad; // nco phase step rate + d_rem_code_phase_chips = rem_code_phase_chips; // code resampler initial position + d_code_phase_step_chips = code_phase_step_chips; // code resampler step + d_code_phase_rate_step_chips = code_phase_rate_step_chips; // code resampler step rate + d_correlator_length_samples = signal_length_samples; // number of samples Fpga_Multicorrelator_8sc::update_local_code(); Fpga_Multicorrelator_8sc::fpga_compute_signal_parameters_in_fpga(); Fpga_Multicorrelator_8sc::fpga_configure_signal_parameters_in_fpga(); @@ -287,6 +290,8 @@ void Fpga_Multicorrelator_8sc::set_channel(uint32_t channel) LOG(INFO) << "Test register sanity check success !"; } + d_map_base[INT_ON_RST_REG_ADDR] = ENABLE_TRK_INT_ON_RESET; // enable interrupts on reset to prevent deadlock + // enable interrupts int32_t reenable = 1; ssize_t nbytes = TEMP_FAILURE_RETRY(write(d_device_descriptor, reinterpret_cast(&reenable), sizeof(int32_t))); @@ -396,6 +401,7 @@ void Fpga_Multicorrelator_8sc::fpga_compute_signal_parameters_in_fpga(void) float d_rem_carrier_phase_in_rad_temp; d_code_phase_step_chips_num = static_cast(roundf(MAX_CODE_RESAMPLER_COUNTER * d_code_phase_step_chips)); + d_code_phase_rate_step_chips_num = static_cast(roundf(MAX_CODE_RESAMPLER_COUNTER * d_code_phase_rate_step_chips)); if (d_rem_carrier_phase_in_rad > M_PI) { @@ -412,18 +418,23 @@ void Fpga_Multicorrelator_8sc::fpga_compute_signal_parameters_in_fpga(void) d_rem_carr_phase_rad_int = static_cast(roundf((d_rem_carrier_phase_in_rad_temp)*PHASE_CARR_MAX_div_PI)); d_phase_step_rad_int = static_cast(roundf((d_phase_step_rad)*PHASE_CARR_MAX_div_PI)); // the FPGA accepts a range for the phase step between -pi and +pi + d_carrier_phase_rate_step_rad_int = static_cast(roundf((d_carrier_phase_rate_step_rad)*PHASE_CARR_MAX_div_PI)); } void Fpga_Multicorrelator_8sc::fpga_configure_signal_parameters_in_fpga(void) { - d_map_base[CODE_PHASE_STEP_CHIPS_NUM_REG_ADDR] = d_code_phase_step_chips_num; + d_map_base[CODE_PHASE_STEP_CHIPS_NUM_REG_ADDR] = d_code_phase_step_chips_num; // code phase step - d_map_base[NSAMPLES_MINUS_1_REG_ADDR] = d_correlator_length_samples - 1; + d_map_base[CODE_PHASE_STEP_CHIPS_RATE] = d_code_phase_rate_step_chips_num; // code phase step rate - d_map_base[REM_CARR_PHASE_RAD_REG_ADDR] = d_rem_carr_phase_rad_int; + d_map_base[NSAMPLES_MINUS_1_REG_ADDR] = d_correlator_length_samples - 1; // number of samples - d_map_base[PHASE_STEP_RAD_REG_ADDR] = d_phase_step_rad_int; + d_map_base[REM_CARR_PHASE_RAD_REG_ADDR] = d_rem_carr_phase_rad_int; // initial nco phase + + d_map_base[PHASE_STEP_RAD_REG_ADDR] = d_phase_step_rad_int; // nco phase step + + d_map_base[PHASE_STEP_RATE_REG_ADDR] = d_carrier_phase_rate_step_rad_int; // nco phase step rate } diff --git a/src/algorithms/tracking/libs/fpga_multicorrelator.h b/src/algorithms/tracking/libs/fpga_multicorrelator.h index c97506839..b7ca95140 100644 --- a/src/algorithms/tracking/libs/fpga_multicorrelator.h +++ b/src/algorithms/tracking/libs/fpga_multicorrelator.h @@ -54,7 +54,10 @@ #define DROP_SAMPLES_REG_ADDR 18 #define INITIAL_COUNTER_VALUE_REG_ADDR_LSW 19 #define INITIAL_COUNTER_VALUE_REG_ADDR_MSW 20 +#define CODE_PHASE_STEP_CHIPS_RATE 21 +#define PHASE_STEP_RATE_REG_ADDR 22 #define STOP_TRACKING_REG_ADDR 23 +#define INT_ON_RST_REG_ADDR 24 // cause interrupt on reset to prevent deadlock #define START_FLAG_ADDR 30 // read-write addresses #define TEST_REG_ADDR 31 @@ -109,15 +112,19 @@ private: uint32_t d_correlator_length_samples; float d_rem_code_phase_chips; float d_code_phase_step_chips; + float d_code_phase_rate_step_chips; float d_rem_carrier_phase_in_rad; float d_phase_step_rad; + float d_carrier_phase_rate_step_rad; // configuration data computed in the format that the FPGA expects uint32_t *d_initial_index; uint32_t *d_initial_interp_counter; uint32_t d_code_phase_step_chips_num; + uint32_t d_code_phase_rate_step_chips_num; int32_t d_rem_carr_phase_rad_int; int32_t d_phase_step_rad_int; + int32_t d_carrier_phase_rate_step_rad_int; uint64_t d_initial_sample_counter; // driver From 824dcebec2255e9ebd9cddcbcd2f554f4728bca0 Mon Sep 17 00:00:00 2001 From: Marc Majoral Date: Wed, 10 Apr 2019 16:53:03 +0200 Subject: [PATCH 05/12] immediate call to state 2 (Wide tracking and symbol synchronization) removed from pull-in state. --- .../dll_pll_veml_tracking_fpga.cc | 647 +++++++++++++----- .../dll_pll_veml_tracking_fpga.h | 2 +- 2 files changed, 461 insertions(+), 188 deletions(-) diff --git a/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc b/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc index aa94f69e7..3807402bf 100644 --- a/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc +++ b/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc @@ -33,7 +33,6 @@ * * ------------------------------------------------------------------------- */ - #include "dll_pll_veml_tracking_fpga.h" #include "GPS_L1_CA.h" #include "GPS_L2C.h" @@ -54,6 +53,7 @@ #include // for mp #include #include +//#include #include #include #include // for abs, size_t @@ -61,7 +61,6 @@ #include #include - dll_pll_veml_tracking_fpga_sptr dll_pll_veml_make_tracking_fpga(const Dll_Pll_Conf_Fpga &conf_) { return dll_pll_veml_tracking_fpga_sptr(new dll_pll_veml_tracking_fpga(conf_)); @@ -272,7 +271,7 @@ dll_pll_veml_tracking_fpga::dll_pll_veml_tracking_fpga(const Dll_Pll_Conf_Fpga & // Initialize tracking ========================================== d_code_loop_filter = Tracking_loop_filter(d_code_period, trk_parameters.dll_bw_hz, trk_parameters.dll_filter_order, false); - printf("trk_parameters.fll_bw_hz = %f trk_parameters.pll_bw_hz = %f trk_parameters.pll_filter_order = %d\n", trk_parameters.fll_bw_hz, trk_parameters.pll_bw_hz, trk_parameters.pll_filter_order); + //printf("trk_parameters.fll_bw_hz = %f trk_parameters.pll_bw_hz = %f trk_parameters.pll_filter_order = %d\n", trk_parameters.fll_bw_hz, trk_parameters.pll_bw_hz, trk_parameters.pll_filter_order); d_carrier_loop_filter.set_params(trk_parameters.fll_bw_hz, trk_parameters.pll_bw_hz, trk_parameters.pll_filter_order); if (d_veml) @@ -1382,7 +1381,7 @@ int dll_pll_veml_tracking_fpga::general_work(int noutput_items __attribute__((un *out[0] = *d_acquisition_gnss_synchro; usleep(1000); return 1; - break; + //break; } case 1: // Pull-in { @@ -1453,12 +1452,286 @@ int dll_pll_veml_tracking_fpga::general_work(int noutput_items __attribute__((un // don't leave the HW module blocking the signal path before the first sample arrives // start the first tracking process - run_state_2(current_synchro_data); - break; + //run_state_2(current_synchro_data); + *out[0] = *d_acquisition_gnss_synchro; + return 1; + //break; } case 2: // Wide tracking and symbol synchronization { - run_state_2(current_synchro_data); + d_sample_counter = d_sample_counter_next; + d_sample_counter_next = d_sample_counter + static_cast(d_current_prn_length_samples); + + // auto start = std::chrono::system_clock::now(); + do_correlation_step(); + // auto end = std::chrono::system_clock::now(); + // std::chrono::duration elapsed_seconds = end - start; + // std::cout << "elapsed time 0: " << elapsed_seconds.count() << "s\n"; + + // Save single correlation step variables + + // start = std::chrono::system_clock::now(); + + if (d_veml) + { + d_VE_accu = *d_Very_Early; + d_VL_accu = *d_Very_Late; + } + d_E_accu = *d_Early; + d_P_accu = *d_Prompt; + d_L_accu = *d_Late; + + // end = std::chrono::system_clock::now(); + // elapsed_seconds = end - start; + // std::cout << "elapsed time 1: " << elapsed_seconds.count() << "s\n"; + + // Check lock status + + // start = std::chrono::system_clock::now(); + + if (!cn0_and_tracking_lock_status(d_code_period)) + { + clear_tracking_vars(); + d_state = 0; // loss-of-lock detected + } + else + { + // end = std::chrono::system_clock::now(); + // elapsed_seconds = end - start; + // std::cout << "elapsed time 2: " << elapsed_seconds.count() << "s\n"; + + bool next_state = false; + // Perform DLL/PLL tracking loop computations. Costas Loop enabled + + // start = std::chrono::system_clock::now(); + + run_dll_pll(); + + // end = std::chrono::system_clock::now(); + // elapsed_seconds = end - start; + // std::cout << "elapsed time 3: " << elapsed_seconds.count() << "s\n"; + + // start = std::chrono::system_clock::now(); + + update_tracking_vars(); + + // end = std::chrono::system_clock::now(); + // elapsed_seconds = end - start; + // std::cout << "elapsed time 4: " << elapsed_seconds.count() << "s\n"; + + // enable write dump file this cycle (valid DLL/PLL cycle) + + // start = std::chrono::system_clock::now(); + + log_data(false); + + // end = std::chrono::system_clock::now(); + // elapsed_seconds = end - start; + // std::cout << "elapsed time 5: " << elapsed_seconds.count() << "s\n"; + + if (d_secondary) + { + // start = std::chrono::system_clock::now(); + + // ####### SECONDARY CODE LOCK ##### + d_Prompt_circular_buffer.push_back(*d_Prompt); + + // end = std::chrono::system_clock::now(); + // elapsed_seconds = end - start; + // std::cout << "elapsed time 6: " << elapsed_seconds.count() << "s\n"; + + //d_Prompt_buffer_deque.push_back(*d_Prompt); + //if (d_Prompt_buffer_deque.size() == d_secondary_code_length) + if (d_Prompt_circular_buffer.size() == d_secondary_code_length) + { + // start = std::chrono::system_clock::now(); + + next_state = acquire_secondary(); + + // end = std::chrono::system_clock::now(); + // elapsed_seconds = end - start; + // std::cout << "elapsed time 7: " << elapsed_seconds.count() << "s\n"; + + // start = std::chrono::system_clock::now(); + + if (next_state) + { + LOG(INFO) << systemName << " " << signal_pretty_name << " secondary code locked in channel " << d_channel + << " for satellite " << Gnss_Satellite(systemName, d_acquisition_gnss_synchro->PRN) << std::endl; + std::cout << systemName << " " << signal_pretty_name << " secondary code locked in channel " << d_channel + << " for satellite " << Gnss_Satellite(systemName, d_acquisition_gnss_synchro->PRN) << std::endl; + } + + // end = std::chrono::system_clock::now(); + // elapsed_seconds = end - start; + // std::cout << "elapsed time 8: " << elapsed_seconds.count() << "s\n"; + + //d_Prompt_buffer_deque.pop_front(); + } + } + else if (d_symbols_per_bit > 1) //Signal does not have secondary code. Search a bit transition by sign change + { + // start = std::chrono::system_clock::now(); + + float current_tracking_time_s = static_cast(d_sample_counter - d_absolute_samples_offset) / trk_parameters.fs_in; + + // end = std::chrono::system_clock::now(); + // elapsed_seconds = end - start; + // std::cout << "elapsed time 6b: " << elapsed_seconds.count() << "s\n"; + + if (current_tracking_time_s > 10) + { + // start = std::chrono::system_clock::now(); + + d_symbol_history.push_back(d_Prompt->real()); + + // end = std::chrono::system_clock::now(); + // elapsed_seconds = end - start; + // std::cout << "elapsed time 7b: " << elapsed_seconds.count() << "s\n"; + + //******* preamble correlation ******** + + // start = std::chrono::system_clock::now(); + + int32_t corr_value = 0; + if ((d_symbol_history.size() == d_preamble_length_symbols)) // and (d_make_correlation or !d_flag_frame_sync)) + { + int i = 0; + for (const auto &iter : d_symbol_history) + { + if (iter < 0.0) // symbols clipping + { + corr_value -= d_preambles_symbols[i]; + } + else + { + corr_value += d_preambles_symbols[i]; + } + i++; + } + } + + // end = std::chrono::system_clock::now(); + // elapsed_seconds = end - start; + // std::cout << "elapsed time 8b: " << elapsed_seconds.count() << "s\n"; + + // start = std::chrono::system_clock::now(); + + if (corr_value == GPS_CA_PREAMBLE_LENGTH_SYMBOLS) + { + LOG(INFO) << systemName << " " << signal_pretty_name << " tracking preamble detected in channel " << d_channel + << " for satellite " << Gnss_Satellite(systemName, d_acquisition_gnss_synchro->PRN) << std::endl; + next_state = true; + } + else + { + next_state = false; + } + + // end = std::chrono::system_clock::now(); + // elapsed_seconds = end - start; + // std::cout << "elapsed time 9b: " << elapsed_seconds.count() << "s\n"; + } + else + { + next_state = false; + } + } + else + { + next_state = true; + } + + // start = std::chrono::system_clock::now(); + + // ########### Output the tracking results to Telemetry block ########## + if (interchange_iq) + { + if (trk_parameters.track_pilot) + { + // Note that data and pilot components are in quadrature. I and Q are interchanged + current_synchro_data.Prompt_I = static_cast((*d_Prompt_Data).imag()); + current_synchro_data.Prompt_Q = static_cast((*d_Prompt_Data).real()); + } + else + { + current_synchro_data.Prompt_I = static_cast((*d_Prompt).imag()); + current_synchro_data.Prompt_Q = static_cast((*d_Prompt).real()); + } + } + else + { + if (trk_parameters.track_pilot) + { + // Note that data and pilot components are in quadrature. I and Q are interchanged + current_synchro_data.Prompt_I = static_cast((*d_Prompt_Data).real()); + current_synchro_data.Prompt_Q = static_cast((*d_Prompt_Data).imag()); + } + else + { + current_synchro_data.Prompt_I = static_cast((*d_Prompt).real()); + current_synchro_data.Prompt_Q = static_cast((*d_Prompt).imag()); + } + } + + current_synchro_data.Code_phase_samples = d_rem_code_phase_samples; + current_synchro_data.Carrier_phase_rads = d_acc_carrier_phase_rad; + current_synchro_data.Carrier_Doppler_hz = d_carrier_doppler_hz; + current_synchro_data.CN0_dB_hz = d_CN0_SNV_dB_Hz; + current_synchro_data.Flag_valid_symbol_output = true; + current_synchro_data.correlation_length_ms = d_correlation_length_ms; + + // end = std::chrono::system_clock::now(); + // elapsed_seconds = end - start; + // std::cout << "elapsed time 10: " << elapsed_seconds.count() << "s\n"; + + if (next_state) + { // reset extended correlator + d_VE_accu = gr_complex(0.0, 0.0); + d_E_accu = gr_complex(0.0, 0.0); + d_P_accu = gr_complex(0.0, 0.0); + d_L_accu = gr_complex(0.0, 0.0); + d_VL_accu = gr_complex(0.0, 0.0); + d_Prompt_circular_buffer.clear(); + d_current_symbol = 0; + //d_Prompt_buffer_deque.clear(); + + if (d_enable_extended_integration) + { + // UPDATE INTEGRATION TIME + d_extend_correlation_symbols_count = 0; + d_current_correlation_time_s = static_cast(trk_parameters.extend_correlation_symbols) * static_cast(d_code_period); + + d_state = 3; // next state is the extended correlator integrator + LOG(INFO) << "Enabled " << trk_parameters.extend_correlation_symbols * static_cast(d_code_period * 1000.0) << " ms extended correlator in channel " + << d_channel + << " for satellite " << Gnss_Satellite(systemName, d_acquisition_gnss_synchro->PRN); + std::cout << "Enabled " << trk_parameters.extend_correlation_symbols * static_cast(d_code_period * 1000.0) << " ms extended correlator in channel " + << d_channel + << " for satellite " << Gnss_Satellite(systemName, d_acquisition_gnss_synchro->PRN) << std::endl; + // Set narrow taps delay values [chips] + d_code_loop_filter.set_update_interval(d_current_correlation_time_s); + d_code_loop_filter.set_noise_bandwidth(trk_parameters.dll_bw_narrow_hz); + d_carrier_loop_filter.set_params(trk_parameters.fll_bw_hz, trk_parameters.pll_bw_narrow_hz, trk_parameters.pll_filter_order); + if (d_veml) + { + d_local_code_shift_chips[0] = -trk_parameters.very_early_late_space_narrow_chips * static_cast(d_code_samples_per_chip); + d_local_code_shift_chips[1] = -trk_parameters.early_late_space_narrow_chips * static_cast(d_code_samples_per_chip); + d_local_code_shift_chips[3] = trk_parameters.early_late_space_narrow_chips * static_cast(d_code_samples_per_chip); + d_local_code_shift_chips[4] = trk_parameters.very_early_late_space_narrow_chips * static_cast(d_code_samples_per_chip); + } + else + { + d_local_code_shift_chips[0] = -trk_parameters.early_late_space_narrow_chips * static_cast(d_code_samples_per_chip); + d_local_code_shift_chips[2] = trk_parameters.early_late_space_narrow_chips * static_cast(d_code_samples_per_chip); + } + } + else + { + d_state = 4; + } + } + } break; } case 3: // coherent integration (correlation time extension) @@ -1600,183 +1873,183 @@ int dll_pll_veml_tracking_fpga::general_work(int noutput_items __attribute__((un } -void dll_pll_veml_tracking_fpga::run_state_2(Gnss_Synchro ¤t_synchro_data) -{ - d_sample_counter = d_sample_counter_next; - d_sample_counter_next = d_sample_counter + static_cast(d_current_prn_length_samples); - - do_correlation_step(); - // Save single correlation step variables - if (d_veml) - { - d_VE_accu = *d_Very_Early; - d_VL_accu = *d_Very_Late; - } - d_E_accu = *d_Early; - d_P_accu = *d_Prompt; - d_L_accu = *d_Late; - - // Check lock status - if (!cn0_and_tracking_lock_status(d_code_period)) - { - clear_tracking_vars(); - d_state = 0; // loss-of-lock detected - } - else - { - bool next_state = false; - // Perform DLL/PLL tracking loop computations. Costas Loop enabled - run_dll_pll(); - update_tracking_vars(); - - // enable write dump file this cycle (valid DLL/PLL cycle) - log_data(false); - if (d_secondary) - { - // ####### SECONDARY CODE LOCK ##### - d_Prompt_circular_buffer.push_back(*d_Prompt); - //d_Prompt_buffer_deque.push_back(*d_Prompt); - //if (d_Prompt_buffer_deque.size() == d_secondary_code_length) - if (d_Prompt_circular_buffer.size() == d_secondary_code_length) - { - next_state = acquire_secondary(); - if (next_state) - { - LOG(INFO) << systemName << " " << signal_pretty_name << " secondary code locked in channel " << d_channel - << " for satellite " << Gnss_Satellite(systemName, d_acquisition_gnss_synchro->PRN) << std::endl; - std::cout << systemName << " " << signal_pretty_name << " secondary code locked in channel " << d_channel - << " for satellite " << Gnss_Satellite(systemName, d_acquisition_gnss_synchro->PRN) << std::endl; - } - //d_Prompt_buffer_deque.pop_front(); - } - } - else if (d_symbols_per_bit > 1) //Signal does not have secondary code. Search a bit transition by sign change - { - float current_tracking_time_s = static_cast(d_sample_counter - d_absolute_samples_offset) / trk_parameters.fs_in; - if (current_tracking_time_s > 10) - { - d_symbol_history.push_back(d_Prompt->real()); - //******* preamble correlation ******** - int32_t corr_value = 0; - if ((d_symbol_history.size() == GPS_CA_PREAMBLE_LENGTH_SYMBOLS)) // and (d_make_correlation or !d_flag_frame_sync)) - { - int i = 0; - for (const auto &iter : d_symbol_history) - { - if (iter < 0.0) // symbols clipping - { - corr_value -= d_preambles_symbols[i]; - } - else - { - corr_value += d_preambles_symbols[i]; - } - i++; - } - } - if (corr_value == GPS_CA_PREAMBLE_LENGTH_SYMBOLS) - { - LOG(INFO) << systemName << " " << signal_pretty_name << " tracking preamble detected in channel " << d_channel - << " for satellite " << Gnss_Satellite(systemName, d_acquisition_gnss_synchro->PRN) << std::endl; - next_state = true; - } - else - { - next_state = false; - } - } - else - { - next_state = false; - } - } - else - { - next_state = true; - } - - // ########### Output the tracking results to Telemetry block ########## - if (interchange_iq) - { - if (trk_parameters.track_pilot) - { - // Note that data and pilot components are in quadrature. I and Q are interchanged - current_synchro_data.Prompt_I = static_cast((*d_Prompt_Data).imag()); - current_synchro_data.Prompt_Q = static_cast((*d_Prompt_Data).real()); - } - else - { - current_synchro_data.Prompt_I = static_cast((*d_Prompt).imag()); - current_synchro_data.Prompt_Q = static_cast((*d_Prompt).real()); - } - } - else - { - if (trk_parameters.track_pilot) - { - // Note that data and pilot components are in quadrature. I and Q are interchanged - current_synchro_data.Prompt_I = static_cast((*d_Prompt_Data).real()); - current_synchro_data.Prompt_Q = static_cast((*d_Prompt_Data).imag()); - } - else - { - current_synchro_data.Prompt_I = static_cast((*d_Prompt).real()); - current_synchro_data.Prompt_Q = static_cast((*d_Prompt).imag()); - } - } - - current_synchro_data.Code_phase_samples = d_rem_code_phase_samples; - current_synchro_data.Carrier_phase_rads = d_acc_carrier_phase_rad; - current_synchro_data.Carrier_Doppler_hz = d_carrier_doppler_hz; - current_synchro_data.CN0_dB_hz = d_CN0_SNV_dB_Hz; - current_synchro_data.Flag_valid_symbol_output = true; - current_synchro_data.correlation_length_ms = d_correlation_length_ms; - - if (next_state) - { // reset extended correlator - d_VE_accu = gr_complex(0.0, 0.0); - d_E_accu = gr_complex(0.0, 0.0); - d_P_accu = gr_complex(0.0, 0.0); - d_L_accu = gr_complex(0.0, 0.0); - d_VL_accu = gr_complex(0.0, 0.0); - d_Prompt_circular_buffer.clear(); - d_current_symbol = 0; - //d_Prompt_buffer_deque.clear(); - - if (d_enable_extended_integration) - { - // UPDATE INTEGRATION TIME - d_extend_correlation_symbols_count = 0; - d_current_correlation_time_s = static_cast(trk_parameters.extend_correlation_symbols) * static_cast(d_code_period); - - d_state = 3; // next state is the extended correlator integrator - LOG(INFO) << "Enabled " << trk_parameters.extend_correlation_symbols * static_cast(d_code_period * 1000.0) << " ms extended correlator in channel " - << d_channel - << " for satellite " << Gnss_Satellite(systemName, d_acquisition_gnss_synchro->PRN); - std::cout << "Enabled " << trk_parameters.extend_correlation_symbols * static_cast(d_code_period * 1000.0) << " ms extended correlator in channel " - << d_channel - << " for satellite " << Gnss_Satellite(systemName, d_acquisition_gnss_synchro->PRN) << std::endl; - // Set narrow taps delay values [chips] - d_code_loop_filter.set_update_interval(d_current_correlation_time_s); - d_code_loop_filter.set_noise_bandwidth(trk_parameters.dll_bw_narrow_hz); - d_carrier_loop_filter.set_params(trk_parameters.fll_bw_hz, trk_parameters.pll_bw_narrow_hz, trk_parameters.pll_filter_order); - if (d_veml) - { - d_local_code_shift_chips[0] = -trk_parameters.very_early_late_space_narrow_chips * static_cast(d_code_samples_per_chip); - d_local_code_shift_chips[1] = -trk_parameters.early_late_space_narrow_chips * static_cast(d_code_samples_per_chip); - d_local_code_shift_chips[3] = trk_parameters.early_late_space_narrow_chips * static_cast(d_code_samples_per_chip); - d_local_code_shift_chips[4] = trk_parameters.very_early_late_space_narrow_chips * static_cast(d_code_samples_per_chip); - } - else - { - d_local_code_shift_chips[0] = -trk_parameters.early_late_space_narrow_chips * static_cast(d_code_samples_per_chip); - d_local_code_shift_chips[2] = trk_parameters.early_late_space_narrow_chips * static_cast(d_code_samples_per_chip); - } - } - else - { - d_state = 4; - } - } - } -} +//void dll_pll_veml_tracking_fpga::run_state_2(Gnss_Synchro ¤t_synchro_data) +//{ +// d_sample_counter = d_sample_counter_next; +// d_sample_counter_next = d_sample_counter + static_cast(d_current_prn_length_samples); +// +// do_correlation_step(); +// // Save single correlation step variables +// if (d_veml) +// { +// d_VE_accu = *d_Very_Early; +// d_VL_accu = *d_Very_Late; +// } +// d_E_accu = *d_Early; +// d_P_accu = *d_Prompt; +// d_L_accu = *d_Late; +// +// // Check lock status +// if (!cn0_and_tracking_lock_status(d_code_period)) +// { +// clear_tracking_vars(); +// d_state = 0; // loss-of-lock detected +// } +// else +// { +// bool next_state = false; +// // Perform DLL/PLL tracking loop computations. Costas Loop enabled +// run_dll_pll(); +// update_tracking_vars(); +// +// // enable write dump file this cycle (valid DLL/PLL cycle) +// log_data(false); +// if (d_secondary) +// { +// // ####### SECONDARY CODE LOCK ##### +// d_Prompt_circular_buffer.push_back(*d_Prompt); +// //d_Prompt_buffer_deque.push_back(*d_Prompt); +// //if (d_Prompt_buffer_deque.size() == d_secondary_code_length) +// if (d_Prompt_circular_buffer.size() == d_secondary_code_length) +// { +// next_state = acquire_secondary(); +// if (next_state) +// { +// LOG(INFO) << systemName << " " << signal_pretty_name << " secondary code locked in channel " << d_channel +// << " for satellite " << Gnss_Satellite(systemName, d_acquisition_gnss_synchro->PRN) << std::endl; +// std::cout << systemName << " " << signal_pretty_name << " secondary code locked in channel " << d_channel +// << " for satellite " << Gnss_Satellite(systemName, d_acquisition_gnss_synchro->PRN) << std::endl; +// } +// //d_Prompt_buffer_deque.pop_front(); +// } +// } +// else if (d_symbols_per_bit > 1) //Signal does not have secondary code. Search a bit transition by sign change +// { +// float current_tracking_time_s = static_cast(d_sample_counter - d_absolute_samples_offset) / trk_parameters.fs_in; +// if (current_tracking_time_s > 10) +// { +// d_symbol_history.push_back(d_Prompt->real()); +// //******* preamble correlation ******** +// int32_t corr_value = 0; +// if ((d_symbol_history.size() == GPS_CA_PREAMBLE_LENGTH_SYMBOLS)) // and (d_make_correlation or !d_flag_frame_sync)) +// { +// int i = 0; +// for (const auto &iter : d_symbol_history) +// { +// if (iter < 0.0) // symbols clipping +// { +// corr_value -= d_preambles_symbols[i]; +// } +// else +// { +// corr_value += d_preambles_symbols[i]; +// } +// i++; +// } +// } +// if (corr_value == GPS_CA_PREAMBLE_LENGTH_SYMBOLS) +// { +// LOG(INFO) << systemName << " " << signal_pretty_name << " tracking preamble detected in channel " << d_channel +// << " for satellite " << Gnss_Satellite(systemName, d_acquisition_gnss_synchro->PRN) << std::endl; +// next_state = true; +// } +// else +// { +// next_state = false; +// } +// } +// else +// { +// next_state = false; +// } +// } +// else +// { +// next_state = true; +// } +// +// // ########### Output the tracking results to Telemetry block ########## +// if (interchange_iq) +// { +// if (trk_parameters.track_pilot) +// { +// // Note that data and pilot components are in quadrature. I and Q are interchanged +// current_synchro_data.Prompt_I = static_cast((*d_Prompt_Data).imag()); +// current_synchro_data.Prompt_Q = static_cast((*d_Prompt_Data).real()); +// } +// else +// { +// current_synchro_data.Prompt_I = static_cast((*d_Prompt).imag()); +// current_synchro_data.Prompt_Q = static_cast((*d_Prompt).real()); +// } +// } +// else +// { +// if (trk_parameters.track_pilot) +// { +// // Note that data and pilot components are in quadrature. I and Q are interchanged +// current_synchro_data.Prompt_I = static_cast((*d_Prompt_Data).real()); +// current_synchro_data.Prompt_Q = static_cast((*d_Prompt_Data).imag()); +// } +// else +// { +// current_synchro_data.Prompt_I = static_cast((*d_Prompt).real()); +// current_synchro_data.Prompt_Q = static_cast((*d_Prompt).imag()); +// } +// } +// +// current_synchro_data.Code_phase_samples = d_rem_code_phase_samples; +// current_synchro_data.Carrier_phase_rads = d_acc_carrier_phase_rad; +// current_synchro_data.Carrier_Doppler_hz = d_carrier_doppler_hz; +// current_synchro_data.CN0_dB_hz = d_CN0_SNV_dB_Hz; +// current_synchro_data.Flag_valid_symbol_output = true; +// current_synchro_data.correlation_length_ms = d_correlation_length_ms; +// +// if (next_state) +// { // reset extended correlator +// d_VE_accu = gr_complex(0.0, 0.0); +// d_E_accu = gr_complex(0.0, 0.0); +// d_P_accu = gr_complex(0.0, 0.0); +// d_L_accu = gr_complex(0.0, 0.0); +// d_VL_accu = gr_complex(0.0, 0.0); +// d_Prompt_circular_buffer.clear(); +// d_current_symbol = 0; +// //d_Prompt_buffer_deque.clear(); +// +// if (d_enable_extended_integration) +// { +// // UPDATE INTEGRATION TIME +// d_extend_correlation_symbols_count = 0; +// d_current_correlation_time_s = static_cast(trk_parameters.extend_correlation_symbols) * static_cast(d_code_period); +// +// d_state = 3; // next state is the extended correlator integrator +// LOG(INFO) << "Enabled " << trk_parameters.extend_correlation_symbols * static_cast(d_code_period * 1000.0) << " ms extended correlator in channel " +// << d_channel +// << " for satellite " << Gnss_Satellite(systemName, d_acquisition_gnss_synchro->PRN); +// std::cout << "Enabled " << trk_parameters.extend_correlation_symbols * static_cast(d_code_period * 1000.0) << " ms extended correlator in channel " +// << d_channel +// << " for satellite " << Gnss_Satellite(systemName, d_acquisition_gnss_synchro->PRN) << std::endl; +// // Set narrow taps delay values [chips] +// d_code_loop_filter.set_update_interval(d_current_correlation_time_s); +// d_code_loop_filter.set_noise_bandwidth(trk_parameters.dll_bw_narrow_hz); +// d_carrier_loop_filter.set_params(trk_parameters.fll_bw_hz, trk_parameters.pll_bw_narrow_hz, trk_parameters.pll_filter_order); +// if (d_veml) +// { +// d_local_code_shift_chips[0] = -trk_parameters.very_early_late_space_narrow_chips * static_cast(d_code_samples_per_chip); +// d_local_code_shift_chips[1] = -trk_parameters.early_late_space_narrow_chips * static_cast(d_code_samples_per_chip); +// d_local_code_shift_chips[3] = trk_parameters.early_late_space_narrow_chips * static_cast(d_code_samples_per_chip); +// d_local_code_shift_chips[4] = trk_parameters.very_early_late_space_narrow_chips * static_cast(d_code_samples_per_chip); +// } +// else +// { +// d_local_code_shift_chips[0] = -trk_parameters.early_late_space_narrow_chips * static_cast(d_code_samples_per_chip); +// d_local_code_shift_chips[2] = trk_parameters.early_late_space_narrow_chips * static_cast(d_code_samples_per_chip); +// } +// } +// else +// { +// d_state = 4; +// } +// } +// } +//} diff --git a/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.h b/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.h index 288f3b09a..388775a7e 100644 --- a/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.h +++ b/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.h @@ -91,7 +91,7 @@ private: void log_data(bool integrating); int32_t save_matfile(); - void run_state_2(Gnss_Synchro ¤t_synchro_data); + //void run_state_2(Gnss_Synchro ¤t_synchro_data); // tracking configuration vars Dll_Pll_Conf_Fpga trk_parameters; From 2555f26238e213cea2c93a6f9050088f5f381f66 Mon Sep 17 00:00:00 2001 From: Marc Majoral Date: Wed, 10 Apr 2019 17:18:27 +0200 Subject: [PATCH 06/12] use of d_preamble_length_symbols --- .../tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc b/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc index 3807402bf..2df9608b7 100644 --- a/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc +++ b/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc @@ -1617,7 +1617,7 @@ int dll_pll_veml_tracking_fpga::general_work(int noutput_items __attribute__((un // start = std::chrono::system_clock::now(); - if (corr_value == GPS_CA_PREAMBLE_LENGTH_SYMBOLS) + if (corr_value == d_preamble_length_symbols) { LOG(INFO) << systemName << " " << signal_pretty_name << " tracking preamble detected in channel " << d_channel << " for satellite " << Gnss_Satellite(systemName, d_acquisition_gnss_synchro->PRN) << std::endl; From 1a3305fc5b3c1adff367a7d9e1e81c23475a4fdf Mon Sep 17 00:00:00 2001 From: Marc Majoral Date: Wed, 10 Apr 2019 19:40:34 +0200 Subject: [PATCH 07/12] static cast --- .../tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc b/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc index 2df9608b7..de48a4ac2 100644 --- a/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc +++ b/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc @@ -1594,7 +1594,7 @@ int dll_pll_veml_tracking_fpga::general_work(int noutput_items __attribute__((un // start = std::chrono::system_clock::now(); int32_t corr_value = 0; - if ((d_symbol_history.size() == d_preamble_length_symbols)) // and (d_make_correlation or !d_flag_frame_sync)) + if ((static_cast(d_symbol_history.size()) == d_preamble_length_symbols)) // and (d_make_correlation or !d_flag_frame_sync)) { int i = 0; for (const auto &iter : d_symbol_history) From 692978f66b3f5bacb733cb1b4cb8211136885167 Mon Sep 17 00:00:00 2001 From: Marc Majoral Date: Thu, 11 Apr 2019 11:44:00 +0200 Subject: [PATCH 08/12] updated the PLL/DLL initialisation according to the latest changes in dll_pll_veml_tracking.cc --- .../tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc b/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc index de48a4ac2..c79231f03 100644 --- a/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc +++ b/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc @@ -477,6 +477,7 @@ void dll_pll_veml_tracking_fpga::start_tracking() // filter initialization + d_carrier_loop_filter.initialize(static_cast(d_acq_carrier_doppler_hz)); // initialize the carrier filter // enable tracking pull-in @@ -1273,8 +1274,6 @@ void dll_pll_veml_tracking_fpga::set_gnss_synchro(Gnss_Synchro *p_gnss_synchro) d_code_ph_history.clear(); - // DLL/PLL filter initialization - d_code_loop_filter.initialize(); // initialize the code filter d_carr_ph_history.clear(); @@ -1327,8 +1326,11 @@ void dll_pll_veml_tracking_fpga::set_gnss_synchro(Gnss_Synchro *p_gnss_synchro) d_current_correlation_time_s = d_code_period; + // DLL/PLL filter initialization + d_carrier_loop_filter.set_params(trk_parameters.fll_bw_hz, trk_parameters.pll_bw_hz, trk_parameters.pll_filter_order); d_code_loop_filter.set_noise_bandwidth(trk_parameters.dll_bw_hz); d_code_loop_filter.set_update_interval(d_code_period); + d_code_loop_filter.initialize(); // initialize the code filter multicorrelator_fpga->set_local_code_and_taps(d_local_code_shift_chips, d_prompt_data_shift, d_acquisition_gnss_synchro->PRN); From a628ad590692621527e87609b2aa3bd5632f8a2b Mon Sep 17 00:00:00 2001 From: Marc Majoral Date: Fri, 12 Apr 2019 10:03:57 +0200 Subject: [PATCH 09/12] removed FPGA dummy read --- src/algorithms/acquisition/libs/fpga_acquisition.cc | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/src/algorithms/acquisition/libs/fpga_acquisition.cc b/src/algorithms/acquisition/libs/fpga_acquisition.cc index 7a553cb00..fdbd0762c 100644 --- a/src/algorithms/acquisition/libs/fpga_acquisition.cc +++ b/src/algorithms/acquisition/libs/fpga_acquisition.cc @@ -279,13 +279,11 @@ void Fpga_Acquisition::read_acquisition_results(uint32_t *max_index, *power_sum = 0; - readval = d_map_base[8]; - *total_blk_exp = readval; - readval = d_map_base[7]; // read doppler index -- this read releases the interrupt line *doppler_index = readval; - readval = d_map_base[15]; // read dummy (to be removed) + readval = d_map_base[8]; + *total_blk_exp = readval; } From 9f80eaf0ffca8416a868a0c71d3563e015c0ced7 Mon Sep 17 00:00:00 2001 From: Marc Majoral Date: Fri, 12 Apr 2019 11:36:30 +0200 Subject: [PATCH 10/12] code cleanup --- .../acquisition/libs/fpga_acquisition.cc | 18 +- .../dll_pll_veml_tracking_fpga.cc | 285 +----------------- .../tracking/libs/fpga_multicorrelator.cc | 6 - 3 files changed, 12 insertions(+), 297 deletions(-) diff --git a/src/algorithms/acquisition/libs/fpga_acquisition.cc b/src/algorithms/acquisition/libs/fpga_acquisition.cc index fdbd0762c..7486f4edb 100644 --- a/src/algorithms/acquisition/libs/fpga_acquisition.cc +++ b/src/algorithms/acquisition/libs/fpga_acquisition.cc @@ -53,9 +53,7 @@ #define MEM_LOCAL_CODE_WR_ENABLE 0x0C000000 // command to enable the ENA and WR pins of the internal memory of the multicorrelator #define POW_2_2 4 // 2^2 (used for the conversion of floating point numbers to integers) #define POW_2_31 2147483648 // 2^31 (used for the conversion of floating point numbers to integers) -#define ENABLE_INT_ON_RESET 2 // flag that causes the acquisition to trigger an interrupt when it is reset. It is used \ - // to avoid a potential deadlock caused by the SW waiting for an interrupt from the FPGA when the \ - // HW is reset +#define ENABLE_INT_ON_RESET 2 // flag that causes the acquisition to trigger an interrupt when it is reset. #define SELECT_LSBits 0x0000FFFF // Select the 10 LSbits out of a 20-bit word #define SELECT_MSBbits 0xFFFF0000 // Select the 10 MSbits out of a 20-bit word @@ -259,30 +257,30 @@ void Fpga_Acquisition::read_acquisition_results(uint32_t *max_index, uint64_t readval_long = 0; uint64_t readval_long_shifted = 0; - readval = d_map_base[1]; + readval = d_map_base[1]; // read sample counter (LSW) initial_sample_tmp = readval; - readval_long = d_map_base[2]; + readval_long = d_map_base[2]; // read sample counter (MSW) readval_long_shifted = readval_long << 32; // 2^32 initial_sample_tmp = initial_sample_tmp + readval_long_shifted; // 2^32 *initial_sample = initial_sample_tmp; - readval = d_map_base[3]; + readval = d_map_base[3]; // read first peak value *firstpeak = static_cast(readval); - readval = d_map_base[4]; + readval = d_map_base[4]; // read second peak value *secondpeak = static_cast(readval); - readval = d_map_base[5]; + readval = d_map_base[5]; // read max index position *max_index = readval; - *power_sum = 0; + *power_sum = 0; // power sum is not used readval = d_map_base[7]; // read doppler index -- this read releases the interrupt line *doppler_index = readval; - readval = d_map_base[8]; + readval = d_map_base[8]; // read FFT block exponent *total_blk_exp = readval; } diff --git a/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc b/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc index c79231f03..185281684 100644 --- a/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc +++ b/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc @@ -53,7 +53,6 @@ #include // for mp #include #include -//#include #include #include #include // for abs, size_t @@ -1264,8 +1263,6 @@ void dll_pll_veml_tracking_fpga::set_gnss_synchro(Gnss_Synchro *p_gnss_synchro) d_acquisition_gnss_synchro = p_gnss_synchro; if (p_gnss_synchro->PRN > 0) { - //std::cout << "Acquisition is about to start " << std::endl; - // When using the FPGA the SW only reads the sample counter during active tracking in order to spare CPU clock cycles. d_sample_counter = 0; d_sample_counter_next = 0; @@ -1383,7 +1380,6 @@ int dll_pll_veml_tracking_fpga::general_work(int noutput_items __attribute__((un *out[0] = *d_acquisition_gnss_synchro; usleep(1000); return 1; - //break; } case 1: // Pull-in { @@ -1422,16 +1418,15 @@ int dll_pll_veml_tracking_fpga::general_work(int noutput_items __attribute__((un current_synchro_data.Tracking_sample_counter = absolute_samples_offset; d_sample_counter_next = d_sample_counter; - // Doppler effect Fd = (C / (C + Vr)) * F double radial_velocity = (d_signal_carrier_freq + d_acq_carrier_doppler_hz) / d_signal_carrier_freq; // new chip and PRN sequence periods based on acq Doppler d_code_freq_chips = radial_velocity * d_code_chip_rate; d_code_phase_step_chips = d_code_freq_chips / trk_parameters.fs_in; d_code_phase_rate_step_chips = 0.0; - double T_chip_mod_seconds = 1.0 / d_code_freq_chips; - double T_prn_mod_seconds = T_chip_mod_seconds * static_cast(d_code_length_chips); - double T_prn_mod_samples = T_prn_mod_seconds * trk_parameters.fs_in; + //double T_chip_mod_seconds = 1.0 / d_code_freq_chips; + //double T_prn_mod_seconds = T_chip_mod_seconds * static_cast(d_code_length_chips); + //double T_prn_mod_samples = T_prn_mod_seconds * trk_parameters.fs_in; d_acq_code_phase_samples = absolute_samples_offset; @@ -1452,28 +1447,18 @@ int dll_pll_veml_tracking_fpga::general_work(int noutput_items __attribute__((un DLOG(INFO) << "PULL-IN Doppler [Hz] = " << d_carrier_doppler_hz << ". PULL-IN Code Phase [samples] = " << d_acq_code_phase_samples; - // don't leave the HW module blocking the signal path before the first sample arrives - // start the first tracking process - //run_state_2(current_synchro_data); *out[0] = *d_acquisition_gnss_synchro; return 1; - //break; } case 2: // Wide tracking and symbol synchronization { d_sample_counter = d_sample_counter_next; d_sample_counter_next = d_sample_counter + static_cast(d_current_prn_length_samples); - // auto start = std::chrono::system_clock::now(); do_correlation_step(); - // auto end = std::chrono::system_clock::now(); - // std::chrono::duration elapsed_seconds = end - start; - // std::cout << "elapsed time 0: " << elapsed_seconds.count() << "s\n"; // Save single correlation step variables - // start = std::chrono::system_clock::now(); - if (d_veml) { d_VE_accu = *d_Very_Early; @@ -1483,14 +1468,8 @@ int dll_pll_veml_tracking_fpga::general_work(int noutput_items __attribute__((un d_P_accu = *d_Prompt; d_L_accu = *d_Late; - // end = std::chrono::system_clock::now(); - // elapsed_seconds = end - start; - // std::cout << "elapsed time 1: " << elapsed_seconds.count() << "s\n"; - // Check lock status - // start = std::chrono::system_clock::now(); - if (!cn0_and_tracking_lock_status(d_code_period)) { clear_tracking_vars(); @@ -1498,64 +1477,26 @@ int dll_pll_veml_tracking_fpga::general_work(int noutput_items __attribute__((un } else { - // end = std::chrono::system_clock::now(); - // elapsed_seconds = end - start; - // std::cout << "elapsed time 2: " << elapsed_seconds.count() << "s\n"; - bool next_state = false; // Perform DLL/PLL tracking loop computations. Costas Loop enabled - // start = std::chrono::system_clock::now(); - run_dll_pll(); - // end = std::chrono::system_clock::now(); - // elapsed_seconds = end - start; - // std::cout << "elapsed time 3: " << elapsed_seconds.count() << "s\n"; - - // start = std::chrono::system_clock::now(); - update_tracking_vars(); - // end = std::chrono::system_clock::now(); - // elapsed_seconds = end - start; - // std::cout << "elapsed time 4: " << elapsed_seconds.count() << "s\n"; - // enable write dump file this cycle (valid DLL/PLL cycle) - // start = std::chrono::system_clock::now(); - log_data(false); - // end = std::chrono::system_clock::now(); - // elapsed_seconds = end - start; - // std::cout << "elapsed time 5: " << elapsed_seconds.count() << "s\n"; - if (d_secondary) { - // start = std::chrono::system_clock::now(); - // ####### SECONDARY CODE LOCK ##### d_Prompt_circular_buffer.push_back(*d_Prompt); - // end = std::chrono::system_clock::now(); - // elapsed_seconds = end - start; - // std::cout << "elapsed time 6: " << elapsed_seconds.count() << "s\n"; - - //d_Prompt_buffer_deque.push_back(*d_Prompt); - //if (d_Prompt_buffer_deque.size() == d_secondary_code_length) if (d_Prompt_circular_buffer.size() == d_secondary_code_length) { - // start = std::chrono::system_clock::now(); - next_state = acquire_secondary(); - // end = std::chrono::system_clock::now(); - // elapsed_seconds = end - start; - // std::cout << "elapsed time 7: " << elapsed_seconds.count() << "s\n"; - - // start = std::chrono::system_clock::now(); - if (next_state) { LOG(INFO) << systemName << " " << signal_pretty_name << " secondary code locked in channel " << d_channel @@ -1563,38 +1504,18 @@ int dll_pll_veml_tracking_fpga::general_work(int noutput_items __attribute__((un std::cout << systemName << " " << signal_pretty_name << " secondary code locked in channel " << d_channel << " for satellite " << Gnss_Satellite(systemName, d_acquisition_gnss_synchro->PRN) << std::endl; } - - // end = std::chrono::system_clock::now(); - // elapsed_seconds = end - start; - // std::cout << "elapsed time 8: " << elapsed_seconds.count() << "s\n"; - - //d_Prompt_buffer_deque.pop_front(); } } else if (d_symbols_per_bit > 1) //Signal does not have secondary code. Search a bit transition by sign change { - // start = std::chrono::system_clock::now(); - float current_tracking_time_s = static_cast(d_sample_counter - d_absolute_samples_offset) / trk_parameters.fs_in; - // end = std::chrono::system_clock::now(); - // elapsed_seconds = end - start; - // std::cout << "elapsed time 6b: " << elapsed_seconds.count() << "s\n"; - if (current_tracking_time_s > 10) { - // start = std::chrono::system_clock::now(); - d_symbol_history.push_back(d_Prompt->real()); - // end = std::chrono::system_clock::now(); - // elapsed_seconds = end - start; - // std::cout << "elapsed time 7b: " << elapsed_seconds.count() << "s\n"; - //******* preamble correlation ******** - // start = std::chrono::system_clock::now(); - int32_t corr_value = 0; if ((static_cast(d_symbol_history.size()) == d_preamble_length_symbols)) // and (d_make_correlation or !d_flag_frame_sync)) { @@ -1613,12 +1534,6 @@ int dll_pll_veml_tracking_fpga::general_work(int noutput_items __attribute__((un } } - // end = std::chrono::system_clock::now(); - // elapsed_seconds = end - start; - // std::cout << "elapsed time 8b: " << elapsed_seconds.count() << "s\n"; - - // start = std::chrono::system_clock::now(); - if (corr_value == d_preamble_length_symbols) { LOG(INFO) << systemName << " " << signal_pretty_name << " tracking preamble detected in channel " << d_channel @@ -1629,10 +1544,6 @@ int dll_pll_veml_tracking_fpga::general_work(int noutput_items __attribute__((un { next_state = false; } - - // end = std::chrono::system_clock::now(); - // elapsed_seconds = end - start; - // std::cout << "elapsed time 9b: " << elapsed_seconds.count() << "s\n"; } else { @@ -1644,8 +1555,6 @@ int dll_pll_veml_tracking_fpga::general_work(int noutput_items __attribute__((un next_state = true; } - // start = std::chrono::system_clock::now(); - // ########### Output the tracking results to Telemetry block ########## if (interchange_iq) { @@ -1683,10 +1592,6 @@ int dll_pll_veml_tracking_fpga::general_work(int noutput_items __attribute__((un current_synchro_data.Flag_valid_symbol_output = true; current_synchro_data.correlation_length_ms = d_correlation_length_ms; - // end = std::chrono::system_clock::now(); - // elapsed_seconds = end - start; - // std::cout << "elapsed time 10: " << elapsed_seconds.count() << "s\n"; - if (next_state) { // reset extended correlator d_VE_accu = gr_complex(0.0, 0.0); @@ -1696,7 +1601,6 @@ int dll_pll_veml_tracking_fpga::general_work(int noutput_items __attribute__((un d_VL_accu = gr_complex(0.0, 0.0); d_Prompt_circular_buffer.clear(); d_current_symbol = 0; - //d_Prompt_buffer_deque.clear(); if (d_enable_extended_integration) { @@ -1743,6 +1647,7 @@ int dll_pll_veml_tracking_fpga::general_work(int noutput_items __attribute__((un // Fill the acquisition data current_synchro_data = *d_acquisition_gnss_synchro; + // perform a correlation step do_correlation_step(); update_tracking_vars(); @@ -1873,185 +1778,3 @@ int dll_pll_veml_tracking_fpga::general_work(int noutput_items __attribute__((un } return 0; } - - -//void dll_pll_veml_tracking_fpga::run_state_2(Gnss_Synchro ¤t_synchro_data) -//{ -// d_sample_counter = d_sample_counter_next; -// d_sample_counter_next = d_sample_counter + static_cast(d_current_prn_length_samples); -// -// do_correlation_step(); -// // Save single correlation step variables -// if (d_veml) -// { -// d_VE_accu = *d_Very_Early; -// d_VL_accu = *d_Very_Late; -// } -// d_E_accu = *d_Early; -// d_P_accu = *d_Prompt; -// d_L_accu = *d_Late; -// -// // Check lock status -// if (!cn0_and_tracking_lock_status(d_code_period)) -// { -// clear_tracking_vars(); -// d_state = 0; // loss-of-lock detected -// } -// else -// { -// bool next_state = false; -// // Perform DLL/PLL tracking loop computations. Costas Loop enabled -// run_dll_pll(); -// update_tracking_vars(); -// -// // enable write dump file this cycle (valid DLL/PLL cycle) -// log_data(false); -// if (d_secondary) -// { -// // ####### SECONDARY CODE LOCK ##### -// d_Prompt_circular_buffer.push_back(*d_Prompt); -// //d_Prompt_buffer_deque.push_back(*d_Prompt); -// //if (d_Prompt_buffer_deque.size() == d_secondary_code_length) -// if (d_Prompt_circular_buffer.size() == d_secondary_code_length) -// { -// next_state = acquire_secondary(); -// if (next_state) -// { -// LOG(INFO) << systemName << " " << signal_pretty_name << " secondary code locked in channel " << d_channel -// << " for satellite " << Gnss_Satellite(systemName, d_acquisition_gnss_synchro->PRN) << std::endl; -// std::cout << systemName << " " << signal_pretty_name << " secondary code locked in channel " << d_channel -// << " for satellite " << Gnss_Satellite(systemName, d_acquisition_gnss_synchro->PRN) << std::endl; -// } -// //d_Prompt_buffer_deque.pop_front(); -// } -// } -// else if (d_symbols_per_bit > 1) //Signal does not have secondary code. Search a bit transition by sign change -// { -// float current_tracking_time_s = static_cast(d_sample_counter - d_absolute_samples_offset) / trk_parameters.fs_in; -// if (current_tracking_time_s > 10) -// { -// d_symbol_history.push_back(d_Prompt->real()); -// //******* preamble correlation ******** -// int32_t corr_value = 0; -// if ((d_symbol_history.size() == GPS_CA_PREAMBLE_LENGTH_SYMBOLS)) // and (d_make_correlation or !d_flag_frame_sync)) -// { -// int i = 0; -// for (const auto &iter : d_symbol_history) -// { -// if (iter < 0.0) // symbols clipping -// { -// corr_value -= d_preambles_symbols[i]; -// } -// else -// { -// corr_value += d_preambles_symbols[i]; -// } -// i++; -// } -// } -// if (corr_value == GPS_CA_PREAMBLE_LENGTH_SYMBOLS) -// { -// LOG(INFO) << systemName << " " << signal_pretty_name << " tracking preamble detected in channel " << d_channel -// << " for satellite " << Gnss_Satellite(systemName, d_acquisition_gnss_synchro->PRN) << std::endl; -// next_state = true; -// } -// else -// { -// next_state = false; -// } -// } -// else -// { -// next_state = false; -// } -// } -// else -// { -// next_state = true; -// } -// -// // ########### Output the tracking results to Telemetry block ########## -// if (interchange_iq) -// { -// if (trk_parameters.track_pilot) -// { -// // Note that data and pilot components are in quadrature. I and Q are interchanged -// current_synchro_data.Prompt_I = static_cast((*d_Prompt_Data).imag()); -// current_synchro_data.Prompt_Q = static_cast((*d_Prompt_Data).real()); -// } -// else -// { -// current_synchro_data.Prompt_I = static_cast((*d_Prompt).imag()); -// current_synchro_data.Prompt_Q = static_cast((*d_Prompt).real()); -// } -// } -// else -// { -// if (trk_parameters.track_pilot) -// { -// // Note that data and pilot components are in quadrature. I and Q are interchanged -// current_synchro_data.Prompt_I = static_cast((*d_Prompt_Data).real()); -// current_synchro_data.Prompt_Q = static_cast((*d_Prompt_Data).imag()); -// } -// else -// { -// current_synchro_data.Prompt_I = static_cast((*d_Prompt).real()); -// current_synchro_data.Prompt_Q = static_cast((*d_Prompt).imag()); -// } -// } -// -// current_synchro_data.Code_phase_samples = d_rem_code_phase_samples; -// current_synchro_data.Carrier_phase_rads = d_acc_carrier_phase_rad; -// current_synchro_data.Carrier_Doppler_hz = d_carrier_doppler_hz; -// current_synchro_data.CN0_dB_hz = d_CN0_SNV_dB_Hz; -// current_synchro_data.Flag_valid_symbol_output = true; -// current_synchro_data.correlation_length_ms = d_correlation_length_ms; -// -// if (next_state) -// { // reset extended correlator -// d_VE_accu = gr_complex(0.0, 0.0); -// d_E_accu = gr_complex(0.0, 0.0); -// d_P_accu = gr_complex(0.0, 0.0); -// d_L_accu = gr_complex(0.0, 0.0); -// d_VL_accu = gr_complex(0.0, 0.0); -// d_Prompt_circular_buffer.clear(); -// d_current_symbol = 0; -// //d_Prompt_buffer_deque.clear(); -// -// if (d_enable_extended_integration) -// { -// // UPDATE INTEGRATION TIME -// d_extend_correlation_symbols_count = 0; -// d_current_correlation_time_s = static_cast(trk_parameters.extend_correlation_symbols) * static_cast(d_code_period); -// -// d_state = 3; // next state is the extended correlator integrator -// LOG(INFO) << "Enabled " << trk_parameters.extend_correlation_symbols * static_cast(d_code_period * 1000.0) << " ms extended correlator in channel " -// << d_channel -// << " for satellite " << Gnss_Satellite(systemName, d_acquisition_gnss_synchro->PRN); -// std::cout << "Enabled " << trk_parameters.extend_correlation_symbols * static_cast(d_code_period * 1000.0) << " ms extended correlator in channel " -// << d_channel -// << " for satellite " << Gnss_Satellite(systemName, d_acquisition_gnss_synchro->PRN) << std::endl; -// // Set narrow taps delay values [chips] -// d_code_loop_filter.set_update_interval(d_current_correlation_time_s); -// d_code_loop_filter.set_noise_bandwidth(trk_parameters.dll_bw_narrow_hz); -// d_carrier_loop_filter.set_params(trk_parameters.fll_bw_hz, trk_parameters.pll_bw_narrow_hz, trk_parameters.pll_filter_order); -// if (d_veml) -// { -// d_local_code_shift_chips[0] = -trk_parameters.very_early_late_space_narrow_chips * static_cast(d_code_samples_per_chip); -// d_local_code_shift_chips[1] = -trk_parameters.early_late_space_narrow_chips * static_cast(d_code_samples_per_chip); -// d_local_code_shift_chips[3] = trk_parameters.early_late_space_narrow_chips * static_cast(d_code_samples_per_chip); -// d_local_code_shift_chips[4] = trk_parameters.very_early_late_space_narrow_chips * static_cast(d_code_samples_per_chip); -// } -// else -// { -// d_local_code_shift_chips[0] = -trk_parameters.early_late_space_narrow_chips * static_cast(d_code_samples_per_chip); -// d_local_code_shift_chips[2] = trk_parameters.early_late_space_narrow_chips * static_cast(d_code_samples_per_chip); -// } -// } -// else -// { -// d_state = 4; -// } -// } -// } -//} diff --git a/src/algorithms/tracking/libs/fpga_multicorrelator.cc b/src/algorithms/tracking/libs/fpga_multicorrelator.cc index 77febe6ca..92e9fb00d 100644 --- a/src/algorithms/tracking/libs/fpga_multicorrelator.cc +++ b/src/algorithms/tracking/libs/fpga_multicorrelator.cc @@ -37,7 +37,6 @@ #include "fpga_multicorrelator.h" #include #include -//#include #include #include #include // for O_RDWR, O_RSYNC @@ -176,7 +175,6 @@ void Fpga_Multicorrelator_8sc::set_output_vectors(gr_complex *corr_out, gr_compl void Fpga_Multicorrelator_8sc::update_local_code() { - //d_rem_code_phase_chips = rem_code_phase_chips; Fpga_Multicorrelator_8sc::fpga_compute_code_shift_parameters(); Fpga_Multicorrelator_8sc::fpga_configure_code_parameters_in_fpga(); } @@ -204,16 +202,12 @@ void Fpga_Multicorrelator_8sc::Carrier_wipeoff_multicorrelator_resampler( Fpga_Multicorrelator_8sc::fpga_launch_multicorrelator_fpga(); int32_t irq_count; ssize_t nb; - //auto start = std::chrono::system_clock::now(); nb = read(d_device_descriptor, &irq_count, sizeof(irq_count)); if (nb != sizeof(irq_count)) { std::cout << "Tracking_module Read failed to retrieve 4 bytes!" << std::endl; std::cout << "Tracking_module Interrupt number " << irq_count << std::endl; } - //auto end = std::chrono::system_clock::now(); - //std::chrono::duration elapsed_seconds = end - start; - //std::cout << "sleeping time : " << elapsed_seconds.count() << "s\n"; Fpga_Multicorrelator_8sc::read_tracking_gps_results(); } From 7a06434928db968f73f9ca2351a2bba63d91cfdc Mon Sep 17 00:00:00 2001 From: Marc Majoral Date: Fri, 12 Apr 2019 15:16:31 +0200 Subject: [PATCH 11/12] removed unnecessary function in fpga_acquisition class --- .../acquisition/gnuradio_blocks/pcps_acquisition_fpga.cc | 6 +----- src/algorithms/acquisition/libs/fpga_acquisition.cc | 6 ------ src/algorithms/acquisition/libs/fpga_acquisition.h | 1 - 3 files changed, 1 insertion(+), 12 deletions(-) diff --git a/src/algorithms/acquisition/gnuradio_blocks/pcps_acquisition_fpga.cc b/src/algorithms/acquisition/gnuradio_blocks/pcps_acquisition_fpga.cc index bd7bc802c..421652353 100644 --- a/src/algorithms/acquisition/gnuradio_blocks/pcps_acquisition_fpga.cc +++ b/src/algorithms/acquisition/gnuradio_blocks/pcps_acquisition_fpga.cc @@ -85,11 +85,7 @@ pcps_acquisition_fpga::pcps_acquisition_fpga(pcpsconf_fpga_t conf_) } -pcps_acquisition_fpga::~pcps_acquisition_fpga() -{ - acquisition_fpga->free(); -} - +pcps_acquisition_fpga::~pcps_acquisition_fpga() = default; void pcps_acquisition_fpga::set_local_code() { diff --git a/src/algorithms/acquisition/libs/fpga_acquisition.cc b/src/algorithms/acquisition/libs/fpga_acquisition.cc index 7486f4edb..ed2096d70 100644 --- a/src/algorithms/acquisition/libs/fpga_acquisition.cc +++ b/src/algorithms/acquisition/libs/fpga_acquisition.cc @@ -151,12 +151,6 @@ void Fpga_Acquisition::open_device() } -bool Fpga_Acquisition::free() -{ - return true; -} - - void Fpga_Acquisition::fpga_acquisition_test_register() { // sanity check : check test register diff --git a/src/algorithms/acquisition/libs/fpga_acquisition.h b/src/algorithms/acquisition/libs/fpga_acquisition.h index 2ee00e315..805297bd3 100644 --- a/src/algorithms/acquisition/libs/fpga_acquisition.h +++ b/src/algorithms/acquisition/libs/fpga_acquisition.h @@ -58,7 +58,6 @@ public: ~Fpga_Acquisition(); bool set_local_code(uint32_t PRN); - bool free(); void set_doppler_sweep(uint32_t num_sweeps, uint32_t doppler_step, int32_t doppler_min); void run_acquisition(void); From 059fbfedc209dabdc531c2303d40567222de91bd Mon Sep 17 00:00:00 2001 From: Marc Majoral Date: Fri, 12 Apr 2019 15:26:47 +0200 Subject: [PATCH 12/12] changed default fft/ifft block exp --- .../acquisition/adapters/galileo_e5a_pcps_acquisition_fpga.cc | 4 ++-- .../acquisition/adapters/gps_l5i_pcps_acquisition_fpga.cc | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/src/algorithms/acquisition/adapters/galileo_e5a_pcps_acquisition_fpga.cc b/src/algorithms/acquisition/adapters/galileo_e5a_pcps_acquisition_fpga.cc index 4c0fb823c..70b8ac1dc 100644 --- a/src/algorithms/acquisition/adapters/galileo_e5a_pcps_acquisition_fpga.cc +++ b/src/algorithms/acquisition/adapters/galileo_e5a_pcps_acquisition_fpga.cc @@ -178,7 +178,7 @@ GalileoE5aPcpsAcquisitionFpga::GalileoE5aPcpsAcquisitionFpga(ConfigurationInterf acq_parameters.all_fft_codes = d_all_fft_codes_; // reference for the FPGA FFT-IFFT attenuation factor - acq_parameters.total_block_exp = configuration_->property(role + ".total_block_exp", 12); + acq_parameters.total_block_exp = configuration_->property(role + ".total_block_exp", 13); acq_parameters.num_doppler_bins_step2 = configuration_->property(role + ".second_nbins", 4); acq_parameters.doppler_step2 = configuration_->property(role + ".second_doppler_step", 125.0); @@ -189,7 +189,7 @@ GalileoE5aPcpsAcquisitionFpga::GalileoE5aPcpsAcquisitionFpga(ConfigurationInterf channel_ = 0; doppler_step_ = 0; gnss_synchro_ = nullptr; - + // temporary buffers that we can delete delete[] code; delete fft_if; diff --git a/src/algorithms/acquisition/adapters/gps_l5i_pcps_acquisition_fpga.cc b/src/algorithms/acquisition/adapters/gps_l5i_pcps_acquisition_fpga.cc index 19a571cfb..1a8f37ba2 100644 --- a/src/algorithms/acquisition/adapters/gps_l5i_pcps_acquisition_fpga.cc +++ b/src/algorithms/acquisition/adapters/gps_l5i_pcps_acquisition_fpga.cc @@ -161,7 +161,7 @@ GpsL5iPcpsAcquisitionFpga::GpsL5iPcpsAcquisitionFpga( acq_parameters.all_fft_codes = d_all_fft_codes_; // reference for the FPGA FFT-IFFT attenuation factor - acq_parameters.total_block_exp = configuration_->property(role + ".total_block_exp", 12); + acq_parameters.total_block_exp = configuration_->property(role + ".total_block_exp", 13); acq_parameters.num_doppler_bins_step2 = configuration_->property(role + ".second_nbins", 4); acq_parameters.doppler_step2 = configuration_->property(role + ".second_doppler_step", 125.0); @@ -172,7 +172,7 @@ GpsL5iPcpsAcquisitionFpga::GpsL5iPcpsAcquisitionFpga( channel_ = 0; doppler_step_ = 0; gnss_synchro_ = nullptr; - + // temporary buffers that we can delete delete[] code; delete fft_if;