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Improve variable initialization

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This commit is contained in:
Carles Fernandez 2020-08-13 22:07:34 +02:00
parent 11b499535e
commit c6e4287ee1
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GPG Key ID: 4C583C52B0C3877D
2 changed files with 15 additions and 27 deletions
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2
src/algorithms/acquisition/libs/acq_conf.cc
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@ -70,7 +70,7 @@ void Acq_Conf::SetFromConfiguration(const ConfigurationInterface *configuration,
chips_per_second = chip_rate;
int64_t fs_in_deprecated = configuration->property("GNSS-SDR.internal_fs_hz", fs_in);
const int64_t fs_in_deprecated = configuration->property("GNSS-SDR.internal_fs_hz", fs_in);
fs_in = configuration->property("GNSS-SDR.internal_fs_sps", fs_in_deprecated);
doppler_max = configuration->property(role + ".doppler_max", doppler_max);
sampled_ms = configuration->property(role + ".coherent_integration_time_ms", sampled_ms);

40
src/algorithms/acquisition/libs/fpga_acquisition.cc
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@ -56,7 +56,7 @@ Fpga_Acquisition::Fpga_Acquisition(std::string device_name,
uint32_t *all_fft_codes,
uint32_t excludelimit)
{
uint32_t vector_length = nsamples_total;
const uint32_t vector_length = nsamples_total;
// initial values
d_device_name = std::move(device_name);
@ -121,13 +121,12 @@ void Fpga_Acquisition::open_device()
void Fpga_Acquisition::fpga_acquisition_test_register()
{
// sanity check : check test register
uint32_t writeval = TEST_REG_SANITY_CHECK;
uint32_t readval;
const uint32_t writeval = TEST_REG_SANITY_CHECK;
// write value to test register
d_map_base[15] = writeval;
// read value from test register
readval = d_map_base[15];
const uint32_t readval = d_map_base[15];
if (writeval != readval)
{
@ -145,7 +144,7 @@ void Fpga_Acquisition::run_acquisition()
// enable interrupts
int32_t reenable = 1;
// int32_t disable_int = 0;
ssize_t nbytes = TEMP_FAILURE_RETRY(write(d_fd, reinterpret_cast<void *>(&reenable), sizeof(int32_t)));
const ssize_t nbytes = TEMP_FAILURE_RETRY(write(d_fd, reinterpret_cast<void *>(&reenable), sizeof(int32_t)));
if (nbytes != sizeof(int32_t))
{
std::cerr << "Error enabling run in the FPGA.\n";
@ -154,10 +153,9 @@ void Fpga_Acquisition::run_acquisition()
// launch the acquisition process
d_map_base[8] = LAUNCH_ACQUISITION; // writing a 1 to reg 8 launches the acquisition process
int32_t irq_count;
ssize_t nb;
// wait for interrupt
nb = read(d_fd, &irq_count, sizeof(irq_count));
const ssize_t nb = read(d_fd, &irq_count, sizeof(irq_count));
if (nb != sizeof(irq_count))
{
std::cout << "acquisition module Read failed to retrieve 4 bytes!\n";
@ -174,13 +172,10 @@ void Fpga_Acquisition::set_block_exp(uint32_t total_block_exp)
void Fpga_Acquisition::set_doppler_sweep(uint32_t num_sweeps, uint32_t doppler_step, int32_t doppler_min)
{
float phase_step_rad_real;
int32_t phase_step_rad_int;
// The doppler step can never be outside the range -pi to +pi, otherwise there would be aliasing
// The FPGA expects phase_step_rad between -1 (-pi) to +1 (+pi)
phase_step_rad_real = 2.0F * (doppler_min) / static_cast<float>(d_fs_in);
phase_step_rad_int = static_cast<int32_t>(phase_step_rad_real * (POW_2_31));
float phase_step_rad_real = 2.0F * (doppler_min) / static_cast<float>(d_fs_in);
auto phase_step_rad_int = static_cast<int32_t>(phase_step_rad_real * (POW_2_31));
d_map_base[3] = phase_step_rad_int;
// repeat the calculation with the doppler step
@ -207,18 +202,13 @@ void Fpga_Acquisition::configure_acquisition()
void Fpga_Acquisition::read_acquisition_results(uint32_t *max_index,
float *firstpeak, float *secondpeak, uint64_t *initial_sample, float *power_sum, uint32_t *doppler_index, uint32_t *total_blk_exp)
{
uint64_t initial_sample_tmp = 0;
uint32_t readval = 0;
uint64_t readval_long = 0;
uint64_t readval_long_shifted = 0;
uint32_t readval = d_map_base[1]; // read sample counter (LSW)
auto initial_sample_tmp = static_cast<uint64_t>(readval);
readval = d_map_base[1]; // read sample counter (LSW)
initial_sample_tmp = readval;
uint64_t readval_long = d_map_base[2]; // read sample counter (MSW)
uint64_t readval_long_shifted = readval_long << 32; // 2^32
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_tmp += readval_long_shifted; // 2^32
*initial_sample = initial_sample_tmp;
readval = d_map_base[3]; // read first peak value
@ -262,8 +252,7 @@ void Fpga_Acquisition::reset_acquisition()
// this function is only used for the unit tests
void Fpga_Acquisition::read_fpga_total_scale_factor(uint32_t *total_scale_factor, uint32_t *fw_scale_factor)
{
uint32_t readval = 0;
readval = d_map_base[8];
uint32_t readval = d_map_base[8];
*total_scale_factor = readval;
// only the total scale factor is used for the tests (fw scale factor to be removed)
*fw_scale_factor = 0;
@ -272,7 +261,6 @@ void Fpga_Acquisition::read_fpga_total_scale_factor(uint32_t *total_scale_factor
void Fpga_Acquisition::read_result_valid(uint32_t *result_valid)
{
uint32_t readval = 0;
readval = d_map_base[0];
uint32_t readval = d_map_base[0];
*result_valid = readval;
}