diff options
Diffstat (limited to 'host/lib/usrp/dboard')
| -rw-r--r-- | host/lib/usrp/dboard/db_rfx.cpp | 39 | ||||
| -rw-r--r-- | host/lib/usrp/dboard/db_xcvr2450.cpp | 13 |
2 files changed, 33 insertions, 19 deletions
diff --git a/host/lib/usrp/dboard/db_rfx.cpp b/host/lib/usrp/dboard/db_rfx.cpp index 725b5cc03..f938c749a 100644 --- a/host/lib/usrp/dboard/db_rfx.cpp +++ b/host/lib/usrp/dboard/db_rfx.cpp @@ -312,7 +312,8 @@ double rfx_xcvr::set_lo_freq( (8, adf4360_regs_t::BAND_SELECT_CLOCK_DIV_8) ; - double actual_freq=0, ref_freq = this->get_iface()->get_clock_rate(unit); + std::vector<double> clock_rates = this->get_iface()->get_clock_rates(unit); + double actual_freq = 0, ref_freq = 0; int R=0, BS=0, P=0, B=0, A=0; /* @@ -325,27 +326,31 @@ double rfx_xcvr::set_lo_freq( * fvco = [P*B + A] * fref/R * fvco*R/fref = P*B + A = N */ - for(R = 2; R <= 32; R+=2){ - BOOST_FOREACH(BS, bandsel_to_enum.keys()){ - if (ref_freq/R/BS > 1e6) continue; //constraint on band select clock - BOOST_FOREACH(P, prescaler_to_enum.keys()){ - //calculate B and A from N - double N = target_freq*R/ref_freq; - B = int(std::floor(N/P)); - A = boost::math::iround(N - P*B); - if (B < A or B > 8191 or B < 3 or A > 31) continue; //constraints on A, B - //calculate the actual frequency - actual_freq = double(P*B + A)*ref_freq/R; - if (actual_freq/P > 300e6) continue; //constraint on prescaler output - //constraints met: exit loop - goto done_loop; + for(R = 1; R <= 32; R+=((R==1)?1:2)){ + BOOST_FOREACH(ref_freq, uhd::reversed(uhd::sorted(clock_rates))){ + BOOST_FOREACH(BS, bandsel_to_enum.keys()){ + if (ref_freq/R/BS > 1e6) continue; //constraint on band select clock + BOOST_FOREACH(P, prescaler_to_enum.keys()){ + //calculate B and A from N + double N = target_freq*R/ref_freq; + B = int(std::floor(N/P)); + A = boost::math::iround(N - P*B); + if (B < A or B > 8191 or B < 3 or A > 31) continue; //constraints on A, B + //calculate the actual frequency + actual_freq = double(P*B + A)*ref_freq/R; + if (actual_freq/P > 300e6) continue; //constraint on prescaler output + //constraints met: exit loop + goto done_loop; + } } } } done_loop: if (rfx_debug) std::cerr << boost::format( - "RFX tune: R=%d, BS=%d, P=%d, B=%d, A=%d, DIV2=%d" - ) % R % BS % P % B % A % int(_div2[unit] && (!is_rx_rfx400)) << std::endl; + "RFX tune: R=%d, BS=%d, P=%d, B=%d, A=%d, DIV2=%d, ref=%fMHz" + ) % R % BS % P % B % A % int(_div2[unit] && (!is_rx_rfx400)) % (ref_freq/1e6) << std::endl; + + this->get_iface()->set_clock_rate(unit, ref_freq); //load the register values adf4360_regs_t regs; diff --git a/host/lib/usrp/dboard/db_xcvr2450.cpp b/host/lib/usrp/dboard/db_xcvr2450.cpp index 9d25b30a5..70b0bbabd 100644 --- a/host/lib/usrp/dboard/db_xcvr2450.cpp +++ b/host/lib/usrp/dboard/db_xcvr2450.cpp @@ -152,12 +152,21 @@ private: * \return the rssi in dB */ double get_rssi(void){ + //*FIXME* RSSI depends on LNA Gain Setting (datasheet pg 16 top middle chart) + double max_power; + switch(_max2829_regs.rx_lna_gain){ + case 0: + case 1: max_power = 0; break; + case 2: max_power = -15; break; + case 3: max_power = -30.5; break; + } + //constants for the rssi calculation static const double min_v = 0.5, max_v = 2.5; static const double rssi_dyn_range = 60; //calculate the rssi from the voltage double voltage = this->get_iface()->read_aux_adc(dboard_iface::UNIT_RX, dboard_iface::AUX_ADC_B); - return rssi_dyn_range*(voltage - min_v)/(max_v - min_v); + return max_power - rssi_dyn_range*(voltage - min_v)/(max_v - min_v); } }; @@ -621,7 +630,7 @@ void xcvr2450::rx_get(const wax::obj &key_, wax::obj &val){ if (key.name == "lo_locked") val = sensor_value_t("LO", this->get_locked(), "locked", "unlocked"); else if (key.name == "rssi") - val = sensor_value_t("RSSI", this->get_rssi(), "dB"); + val = sensor_value_t("RSSI", this->get_rssi(), "dBm"); else UHD_THROW_INVALID_CODE_PATH(); return; |