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| author | Ben Hilburn <ben.hilburn@ettus.com> | 2014-05-20 14:00:19 -0700 |
|---|---|---|
| committer | Ben Hilburn <ben.hilburn@ettus.com> | 2014-05-20 14:00:19 -0700 |
| commit | 54674084d36ea529290b4ad4493df3025ef0f041 (patch) | |
| tree | 47a113f08273ad8488ff8f67a5fc1253fcddf780 /host | |
| parent | 3e49237e5d3a06a767c3e64d099570204452d23f (diff) | |
| parent | ab5aa84557a79ff537844f25226b22c0459f7348 (diff) | |
| download | uhd-54674084d36ea529290b4ad4493df3025ef0f041.tar.gz uhd-54674084d36ea529290b4ad4493df3025ef0f041.tar.bz2 uhd-54674084d36ea529290b4ad4493df3025ef0f041.zip | |
Fixing Bug #473 - Autoselection of VCO Frequency in DBSRX2
Diffstat (limited to 'host')
| -rw-r--r-- | host/lib/usrp/dboard/db_dbsrx2.cpp | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/host/lib/usrp/dboard/db_dbsrx2.cpp b/host/lib/usrp/dboard/db_dbsrx2.cpp index 8a8f61a69..1debe3c8f 100644 --- a/host/lib/usrp/dboard/db_dbsrx2.cpp +++ b/host/lib/usrp/dboard/db_dbsrx2.cpp @@ -40,7 +40,7 @@ using namespace boost::assign; /*********************************************************************** * The DBSRX2 constants **********************************************************************/ -static const freq_range_t dbsrx2_freq_range(0.8e9, 2.4e9); +static const freq_range_t dbsrx2_freq_range(0.8e9, 2.3e9); //Multiplied by 2.0 for conversion to complex bandpass from lowpass static const freq_range_t dbsrx2_bandwidth_range(2.0*4.0e6, 2.0*40.0e6); @@ -245,7 +245,7 @@ double dbsrx2::set_lo_freq(double target_freq){ //target_freq = dbsrx2_freq_range.clip(target_freq); //variables used in the calculation below - int scaler = target_freq > 1125e6 ? 2 : 4; + int scaler = target_freq >= 1125e6 ? 2 : 4; double ref_freq = this->get_iface()->get_clock_rate(dboard_iface::UNIT_RX); int R, intdiv, fracdiv, ext_div; double N; @@ -279,8 +279,10 @@ double dbsrx2::set_lo_freq(double target_freq){ << boost::format(" Actual Freq=%fMHz\n") % (_lo_freq/1e6) << std::endl; - //send the registers - send_reg(0x0, 0x7); + //send the registers 0x0 through 0x7 + //writing register 0x4 (F divider LSB) starts the VCO auto seletion so it must be written last + send_reg(0x5, 0x7); + send_reg(0x0, 0x4); //FIXME: probably unnecessary to call get_locked here //get_locked(); @@ -304,7 +306,7 @@ static int gain_to_bbg_vga_reg(double &gain){ UHD_LOGV(often) << boost::format("DBSRX2 BBG Gain:\n") - << boost::format(" %f dB, bbg: %d") % gain % reg + << boost::format(" %f dB, bbg: %d") % gain % reg << std::endl; return reg; @@ -329,7 +331,7 @@ static double gain_to_gc1_rfvga_dac(double &gain){ UHD_LOGV(often) << boost::format("DBSRX2 GC1 Gain:\n") - << boost::format(" %f dB, dac_volts: %f V") % gain % dac_volts + << boost::format(" %f dB, dac_volts: %f V") % gain % dac_volts << std::endl; //the actual gain setting |