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moved the setting of the flags for the writing of the local code to the initialization, to save cpu cycles during tracking.

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This commit is contained in:
Marc Majoral
2019-04-02 20:36:48 +02:00
parent a6110eb334
commit 553946fb65
5 changed files with 39 additions and 10 deletions
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15
src/algorithms/tracking/libs/fpga_multicorrelator.cc
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@@ -300,8 +300,8 @@ uint32_t Fpga_Multicorrelator_8sc::fpga_acquisition_test_register(
void Fpga_Multicorrelator_8sc::fpga_configure_tracking_gps_local_code(int32_t PRN)
{
uint32_t k;
uint32_t code_chip;
uint32_t select_pilot_corelator = LOCAL_CODE_FPGA_CORRELATOR_SELECT_COUNT;
//uint32_t code_chip;
//uint32_t select_pilot_corelator = LOCAL_CODE_FPGA_CORRELATOR_SELECT_COUNT;
d_map_base[PROG_MEMS_ADDR] = LOCAL_CODE_FPGA_CLEAR_ADDRESS_COUNTER;
for (k = 0; k < d_code_length_samples; k++)
@@ -314,9 +314,11 @@ void Fpga_Multicorrelator_8sc::fpga_configure_tracking_gps_local_code(int32_t PR
// {
// code_chip = 0;
// }
code_chip = d_ca_codes[(d_code_length_samples * (PRN - 1)) + k];
//code_chip = d_ca_codes[(d_code_length_samples * (PRN - 1)) + k];
// copy the local code to the FPGA memory one by one
d_map_base[PROG_MEMS_ADDR] = LOCAL_CODE_FPGA_ENABLE_WRITE_MEMORY | code_chip; // | select_fpga_correlator;
//d_map_base[PROG_MEMS_ADDR] = LOCAL_CODE_FPGA_ENABLE_WRITE_MEMORY | code_chip; // | select_fpga_correlator;
d_map_base[PROG_MEMS_ADDR] = d_ca_codes[(d_code_length_samples * (PRN - 1)) + k];
; // | select_fpga_correlator;
}
if (d_track_pilot)
{
@@ -331,8 +333,9 @@ void Fpga_Multicorrelator_8sc::fpga_configure_tracking_gps_local_code(int32_t PR
// {
// code_chip = 0;
// }
code_chip = d_data_codes[(d_code_length_samples * (PRN - 1)) + k];
d_map_base[PROG_MEMS_ADDR] = LOCAL_CODE_FPGA_ENABLE_WRITE_MEMORY | code_chip | select_pilot_corelator;
//code_chip = d_data_codes[(d_code_length_samples * (PRN - 1)) + k];
//d_map_base[PROG_MEMS_ADDR] = LOCAL_CODE_FPGA_ENABLE_WRITE_MEMORY | code_chip | select_pilot_corelator;
d_map_base[PROG_MEMS_ADDR] = d_data_codes[(d_code_length_samples * (PRN - 1)) + k];
}
}