Hello all,
We are using picozed and our application is for narrow band signals. Our application needs a sampling rate of 532800 sps. we used the MATLAB filter wizard (16.1.3) to get the various clock rates. We changed the values in "default_init_param" from:
/* Rate & BW Control */
// {983040000, 245760000, 122880000, 61440000, 30720000, 30720000},//uint32_t rx_path_clock_frequencies[6] *** adi,rx-path-clock-frequencies
// {983040000, 122880000, 122880000, 61440000, 30720000, 30720000},//uint32_t tx_path_clock_frequencies[6] *** adi,tx-path-clock-frequencies
// 18000000,//rf_rx_bandwidth_hz *** adi,rf-rx-bandwidth-hz
// 18000000,//rf_tx_bandwidth_hz *** adi,rf-tx-bandwidth-hz
To
{818380800, 25574400, 8524800, 4262400, 2131200, 532800},//uint32_t rx_path_clock_frequencies[6] *** adi,rx-path-clock-frequencies
{818380800, 25574400, 8524800, 4262400, 2131200, 532800},//uint32_t tx_path_clock_frequencies[6] *** adi,tx-path-clock-frequencies
200000,//rf_rx_bandwidth_hz *** adi,rf-rx-bandwidth-hz
200000,//rf_tx_bandwidth_hz *** adi,rf-tx-bandwidth-hz
But when we use the console to read the sampling frequency "rx_samp_freq?", we get 2131200 instead of 532800?!
Are we making a mistake mapping the filter wizard values to this array?
we tried committing out:
ad9361_set_tx_fir_config(ad9361_phy, tx_fir_config);
ad9361_set_rx_fir_config(ad9361_phy, rx_fir_config);
we also tried
double param[5] = {532800, 0, 0, 0, 0};
set_tx_samp_freq(param, 1);
set_rx_samp_freq(param, 1);
We also tried keeping the bandwidth to 18000000
an non helped.
btw: we receive the signal correctly but with wrong sampling rate (4 times what we expected)
We are using the example project from GitHub for adc_capture()
Regards,
Murad
