diff options
Diffstat (limited to 'host/lib/usrp/dboard/db_dbsrx.cpp')
| -rw-r--r-- | host/lib/usrp/dboard/db_dbsrx.cpp | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/host/lib/usrp/dboard/db_dbsrx.cpp b/host/lib/usrp/dboard/db_dbsrx.cpp index 7250136f5..3ea9cea80 100644 --- a/host/lib/usrp/dboard/db_dbsrx.cpp +++ b/host/lib/usrp/dboard/db_dbsrx.cpp @@ -1,5 +1,5 @@ // -// Copyright 2010 Ettus Research LLC +// Copyright 2010-2011 Ettus Research LLC // // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by @@ -70,7 +70,7 @@ public: private: double _lo_freq; double _bandwidth; - uhd::dict<std::string, float> _gains; + uhd::dict<std::string, double> _gains; max2118_write_regs_t _max2118_write_regs; max2118_read_regs_t _max2118_read_regs; boost::uint8_t _max2118_addr(void){ @@ -78,7 +78,7 @@ private: }; void set_lo_freq(double target_freq); - void set_gain(float gain, const std::string &name); + void set_gain(double gain, const std::string &name); void set_bandwidth(double bandwidth); void send_reg(boost::uint8_t start_reg, boost::uint8_t stop_reg){ @@ -418,17 +418,17 @@ void dbsrx::set_lo_freq(double target_freq){ * \param gain the requested gain in dB * \return 5 bit the register value */ -static int gain_to_gc2_vga_reg(float &gain){ +static int gain_to_gc2_vga_reg(double &gain){ int reg = 0; gain = dbsrx_gain_ranges["GC2"].clip(gain); // Half dB steps from 0-5dB, 1dB steps from 5-24dB if (gain < 5) { reg = boost::math::iround(31.0 - gain/0.5); - gain = float(boost::math::iround(gain) * 0.5); + gain = double(boost::math::iround(gain) * 0.5); } else { reg = boost::math::iround(22.0 - (gain - 4.0)); - gain = float(boost::math::iround(gain)); + gain = double(boost::math::iround(gain)); } if (dbsrx_debug) std::cerr << boost::format( @@ -444,16 +444,16 @@ static int gain_to_gc2_vga_reg(float &gain){ * \param gain the requested gain in dB * \return dac voltage value */ -static float gain_to_gc1_rfvga_dac(float &gain){ +static double gain_to_gc1_rfvga_dac(double &gain){ //clip the input gain = dbsrx_gain_ranges["GC1"].clip(gain); //voltage level constants - static const float max_volts = float(1.2), min_volts = float(2.7); - static const float slope = (max_volts-min_volts)/dbsrx_gain_ranges["GC1"].stop(); + static const double max_volts = 1.2, min_volts = 2.7; + static const double slope = (max_volts-min_volts)/dbsrx_gain_ranges["GC1"].stop(); //calculate the voltage for the aux dac - float dac_volts = gain*slope + min_volts; + double dac_volts = gain*slope + min_volts; if (dbsrx_debug) std::cerr << boost::format( "DBSRX GC1 Gain: %f dB, dac_volts: %f V" @@ -465,7 +465,7 @@ static float gain_to_gc1_rfvga_dac(float &gain){ return dac_volts; } -void dbsrx::set_gain(float gain, const std::string &name){ +void dbsrx::set_gain(double gain, const std::string &name){ assert_has(dbsrx_gain_ranges.keys(), name, "dbsrx gain name"); if (name == "GC2"){ _max2118_write_regs.gc2 = gain_to_gc2_vga_reg(gain); @@ -584,7 +584,7 @@ void dbsrx::rx_set(const wax::obj &key_, const wax::obj &val){ return; case SUBDEV_PROP_GAIN: - this->set_gain(val.as<float>(), key.name); + this->set_gain(val.as<double>(), key.name); return; case SUBDEV_PROP_ENABLED: |