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bladeRF: Add XB-200 support 

This commit adds support for the bladeRF XB-200 transverter expansion
board. To enable the expansion board and to allow the osmocom source or
sink to tune down to 0Hz, parameter xb200 has to be set. XB-200 comes
with 4 filter banks which can be selected by passing their name as
a value of the xb200 parameter. Automatic filter selection will be
enabled if no value is given to the xb200 parameter.

Example:

osmocom_fft -a bladerf,xb200
osmocom_fft -a bladerf,xb200=50M

The following values are valid:
   "custom"  : custom band
   "50M"     :  50MHz band
   "144M"    : 144MHz band
   "222M"    : 222MHz band
   "auto3db" : Select fiterbank based on -3dB filter points
   "auto"    : Select filerbank based on -1dB filter points (default)
This commit is contained in:
Robert Ghilduta 2014-06-11 01:11:09 -07:00 committed by Dimitri Stolnikov
parent c65d205d3b
commit 9cb023b00a
2 changed files with 39 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

41
lib/bladerf/bladerf_common.cc
View File

@ -48,7 +48,13 @@ using namespace boost::assign;
boost::mutex bladerf_common::_devs_mutex;
std::list<boost::weak_ptr<struct bladerf> > bladerf_common::_devs;
bladerf_common::bladerf_common() : _conv_buf(NULL), _conv_buf_size(4096) {}
bladerf_common::bladerf_common() :
_conv_buf(NULL),
_conv_buf_size(4096),
_xb_200_attached(false)
{
}
bladerf_common::~bladerf_common()
{
@ -301,10 +307,37 @@ void bladerf_common::init(dict_t &dict, bladerf_module module)
"and will have no effect. This parameter should be "
"specified on the associated bladeRF source."
<< std::endl;
}
if ( dict.count("xb200") ) {
if (bladerf_expansion_attach(_dev.get(), BLADERF_XB_200)) {
std::cerr << _pfx << "Could not attach XB-200" << std::endl;
} else {
_xb_200_attached = true;
bladerf_xb200_filter filter = BLADERF_XB200_AUTO_1DB;
if ( dict["xb200"] == "custom" ) {
filter = BLADERF_XB200_CUSTOM;
} else if ( dict["xb200"] == "50M" ) {
filter = BLADERF_XB200_50M;
} else if ( dict["xb200"] == "144M" ) {
filter = BLADERF_XB200_144M;
} else if ( dict["xb200"] == "222M" ) {
filter = BLADERF_XB200_222M;
} else if ( dict["xb200"] == "auto3db" ) {
filter = BLADERF_XB200_AUTO_3DB;
} else if ( dict["xb200"] == "auto" ) {
filter = BLADERF_XB200_AUTO_1DB;
} else {
filter = BLADERF_XB200_AUTO_1DB;
}
if (bladerf_xb200_set_filterbank(_dev.get(), module, filter)) {
std::cerr << _pfx << "Could not set XB-200 filter" << std::endl;
}
}
}
/* Show some info about the device we've opened */
std::cerr << _pfx << "Using nuand LLC bladeRF #" << device_number;
@ -387,7 +420,7 @@ void bladerf_common::init(dict_t &dict, bladerf_module module)
osmosdr::freq_range_t bladerf_common::freq_range()
{
/* assuming the same for RX & TX */
return osmosdr::freq_range_t( 300e6, 3.8e9 );
return osmosdr::freq_range_t( _xb_200_attached ? 0 : 300e6, 3.8e9 );
}
osmosdr::meta_range_t bladerf_common::sample_rates()

2
lib/bladerf/bladerf_common.h
View File

@ -82,6 +82,8 @@ protected:
std::string _pfx;
bool _xb_200_attached;
/* BladeRF IQ correction parameters */
static const int16_t DCOFF_SCALE = 2048;
static const int16_t GAIN_SCALE = 4096;