diff options
Diffstat (limited to 'host/lib/usrp/common/ad9361_driver/ad9361_device.cpp')
| -rw-r--r-- | host/lib/usrp/common/ad9361_driver/ad9361_device.cpp | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/host/lib/usrp/common/ad9361_driver/ad9361_device.cpp b/host/lib/usrp/common/ad9361_driver/ad9361_device.cpp index ba66769dd..92ad0ee3f 100644 --- a/host/lib/usrp/common/ad9361_driver/ad9361_device.cpp +++ b/host/lib/usrp/common/ad9361_driver/ad9361_device.cpp @@ -80,6 +80,7 @@ int get_num_taps(int max_num_taps) { const double ad9361_device_t::AD9361_MAX_GAIN = 89.75; const double ad9361_device_t::AD9361_MAX_CLOCK_RATE = 61.44e6; const double ad9361_device_t::AD9361_RECOMMENDED_MAX_CLOCK_RATE = 56e6; +const double ad9361_device_t::AD9361_CAL_VALID_WINDOW = 100e6; /* Program either the RX or TX FIR filter. * @@ -1455,6 +1456,7 @@ void ad9361_device_t::initialize() _rx2_agc_mode = GAIN_MODE_SLOW_AGC; _rx1_agc_enable = false; _rx2_agc_enable = false; + _last_calibration_freq = -AD9361_CAL_VALID_WINDOW; /* Reset the device. */ _io_iface->poke8(0x000, 0x01); @@ -1890,12 +1892,17 @@ double ad9361_device_t::tune(direction_t direction, const double value) /* Update the gain settings. */ _reprogram_gains(); - /* Run the calibration algorithms. */ - _calibrate_baseband_dc_offset(); - _calibrate_rf_dc_offset(); - _calibrate_tx_quadrature(); - _calibrate_rx_quadrature(); - _configure_bb_rf_dc_tracking(_use_dc_offset_correction); //if this is not done here, bb dc offset is not good + /* Only run the following calibrations if we are more than 100MHz away + * from the previous calibration point. */ + if (std::abs(_last_calibration_freq - tune_freq) > AD9361_CAL_VALID_WINDOW) { + /* Run the calibration algorithms. */ + _calibrate_rf_dc_offset(); + _calibrate_tx_quadrature(); + _calibrate_rx_quadrature(); + _configure_bb_rf_dc_tracking(_use_dc_offset_correction); + _last_calibration_freq = tune_freq; + } + /* If we were in the FDD state, return it now. */ if (not_in_alert) { _io_iface->poke8(0x014, 0x21); |