Merge branch 'master' into flow_ctrl

15 files changed, 376 insertions, 69 deletions

diff --git a/host/config/Python.cmake b/host/config/Python.cmake
index 55ef6acca..a5080fc40 100644
--- a/host/config/Python.cmake
+++ b/host/config/Python.cmake
@@ -24,26 +24,23 @@ IF(NOT PYTHONINTERP_FOUND)
     MESSAGE(FATAL_ERROR "Error: Python interpretor required by the build system.")
 ENDIF(NOT PYTHONINTERP_FOUND)
 
-MACRO(PYTHON_CHECK_MODULE module have)
-    MESSAGE(STATUS "Checking for python module ${module}")
+MACRO(PYTHON_CHECK_MODULE desc mod cmd have)
+    MESSAGE(STATUS "Python checking for ${desc}")
     EXECUTE_PROCESS(
-        COMMAND ${PYTHON_EXECUTABLE} -c "import ${module}"
+        COMMAND ${PYTHON_EXECUTABLE} -c "
+#########################################
+try: import ${mod}
+except: exit(-1)
+try: assert ${cmd}
+except: exit(-1)
+#########################################"
         RESULT_VARIABLE ${have}
     )
     IF(${have} EQUAL 0)
-        MESSAGE(STATUS "Checking for python module ${module} - found")
+        MESSAGE(STATUS "Python checking for ${desc} - found")
         SET(${have} TRUE)
     ELSE(${have} EQUAL 0)
-        MESSAGE(STATUS "Checking for python module ${module} - not found")
+        MESSAGE(STATUS "Python checking for ${desc} - not found")
         SET(${have} FALSE)
     ENDIF(${have} EQUAL 0)
 ENDMACRO(PYTHON_CHECK_MODULE)
-
-########################################################################
-# Check Modules
-########################################################################
-PYTHON_CHECK_MODULE("Cheetah" HAVE_PYTHON_MODULE_CHEETAH)
-
-IF(NOT HAVE_PYTHON_MODULE_CHEETAH)
-    MESSAGE(FATAL_ERROR "Error: Cheetah Templates required by the build system.")
-ENDIF(NOT HAVE_PYTHON_MODULE_CHEETAH)
diff --git a/host/docs/dboards.rst b/host/docs/dboards.rst
index d93fb9d6a..b39c587f6 100644
--- a/host/docs/dboards.rst
+++ b/host/docs/dboards.rst
@@ -26,9 +26,13 @@ The boards have no tunable elements or programmable gains.
 Though the magic of aliasing, you can down-convert signals
 greater than the Nyquist rate of the ADC.
 
-BasicRX Bandwidth (Hz): 250M
+BasicRX Bandwidth (Hz): 
+    For Real-Mode (A or B subdevice): 250M
+    For Complex (AB or BA subdevice): 500M
 
-LFRX Bandwidth (Hz): 30M
+LFRX Bandwidth (Hz):
+    For Real-Mode (A or B subdevice): 33M
+    For Complex (AB or BA subdevice): 66M
 
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
 Basic TX and and LFTX
@@ -45,8 +49,12 @@ Though the magic of aliasing, you can up-convert signals
 greater than the Nyquist rate of the DAC.
 
 BasicTX Bandwidth (Hz): 250M
+    For Real-Mode (A or B subdevice): 250M
+    For Complex (AB or BA subdevice): 500M
 
-LFTX Bandwidth (Hz): 30M
+LFTX Bandwidth (Hz): 33M
+    For Real-Mode (A or B subdevice): 33M
+    For Complex (AB or BA subdevice): 66M
 
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
 DBSRX
diff --git a/host/docs/usrp2.rst b/host/docs/usrp2.rst
index 181e34223..ce94f6b6a 100644
--- a/host/docs/usrp2.rst
+++ b/host/docs/usrp2.rst
@@ -178,7 +178,7 @@ The LEDs reveal the following about the state of the device:
 * **LED B:** undocumented
 * **LED C:** receiving
 * **LED D:** firmware loaded
-* **LED E:** undocumented
+* **LED E:** reference lock
 * **LED F:** FPGA loaded
 
 
diff --git a/host/examples/CMakeLists.txt b/host/examples/CMakeLists.txt
index a8873f8d3..ce2ca9640 100644
--- a/host/examples/CMakeLists.txt
+++ b/host/examples/CMakeLists.txt
@@ -16,34 +16,27 @@
 #
 
 ########################################################################
-ADD_EXECUTABLE(benchmark_rx_rate benchmark_rx_rate.cpp)
-TARGET_LINK_LIBRARIES(benchmark_rx_rate uhd)
-
-ADD_EXECUTABLE(rx_timed_samples rx_timed_samples.cpp)
-TARGET_LINK_LIBRARIES(rx_timed_samples uhd)
-
-ADD_EXECUTABLE(test_async_messages test_async_messages.cpp)
-TARGET_LINK_LIBRARIES(test_async_messages uhd)
-
-ADD_EXECUTABLE(test_pps_input test_pps_input.cpp)
-TARGET_LINK_LIBRARIES(test_pps_input uhd)
-
-ADD_EXECUTABLE(tx_timed_samples tx_timed_samples.cpp)
-TARGET_LINK_LIBRARIES(tx_timed_samples uhd)
-
-ADD_EXECUTABLE(tx_waveforms tx_waveforms.cpp)
-TARGET_LINK_LIBRARIES(tx_waveforms uhd)
-
-INSTALL(TARGETS
-    benchmark_rx_rate
-    rx_timed_samples
-    test_async_messages
-    test_pps_input
-    tx_timed_samples
-    tx_waveforms
-    RUNTIME DESTINATION ${PKG_DATA_DIR}/examples
+# example applications
+########################################################################
+SET(example_sources
+    benchmark_rx_rate.cpp
+    rx_samples_to_file.cpp
+    rx_samples_to_udp.cpp
+    rx_timed_samples.cpp
+    test_async_messages.cpp
+    test_pps_input.cpp
+    tx_timed_samples.cpp
+    tx_waveforms.cpp
 )
 
+#for each source: build an executable and install
+FOREACH(example_source ${example_sources})
+    GET_FILENAME_COMPONENT(example_name ${example_source} NAME_WE)
+    ADD_EXECUTABLE(${example_name} ${example_source})
+    TARGET_LINK_LIBRARIES(${example_name} uhd)
+    INSTALL(TARGETS ${example_name} RUNTIME DESTINATION ${PKG_DATA_DIR}/examples)
+ENDFOREACH(example_source)
+
 ########################################################################
 # ASCII Art DFT - requires curses, so this part is optional
 ########################################################################
diff --git a/host/examples/ascii_art_dft.hpp b/host/examples/ascii_art_dft.hpp
index ee2267c2d..92fb77596 100644
--- a/host/examples/ascii_art_dft.hpp
+++ b/host/examples/ascii_art_dft.hpp
@@ -28,7 +28,7 @@ namespace acsii_art_dft{
     );
 
     /*!
-     * Convert a DFT to a piroundable ascii plot.
+     * Convert a DFT to a printable ascii plot.
      * \param dft the log power dft bins
      * \param width the frame width in characters
      * \param height the frame height in characters
diff --git a/host/examples/rx_samples_to_file.cpp b/host/examples/rx_samples_to_file.cpp
new file mode 100644
index 000000000..c80d2a6de
--- /dev/null
+++ b/host/examples/rx_samples_to_file.cpp
@@ -0,0 +1,135 @@
+//
+// Copyright 2010 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
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+#include <uhd/utils/thread_priority.hpp>
+#include <uhd/utils/safe_main.hpp>
+#include <uhd/usrp/single_usrp.hpp>
+#include <boost/program_options.hpp>
+#include <boost/format.hpp>
+#include <boost/thread.hpp>
+#include <iostream>
+#include <fstream>
+#include <complex>
+
+namespace po = boost::program_options;
+
+int UHD_SAFE_MAIN(int argc, char *argv[]){
+    uhd::set_thread_priority_safe();
+
+    //variables to be set by po
+    std::string args, file;
+    size_t total_num_samps;
+    double rate, freq;
+    float gain;
+
+    //setup the program options
+    po::options_description desc("Allowed options");
+    desc.add_options()
+        ("help", "help message")
+        ("args", po::value<std::string>(&args)->default_value(""), "single uhd device address args")
+        ("file", po::value<std::string>(&file)->default_value("out.16sc.dat"), "name of the file to write binary samples to")
+        ("nsamps", po::value<size_t>(&total_num_samps)->default_value(1000), "total number of samples to receive")
+        ("rate", po::value<double>(&rate)->default_value(100e6/16), "rate of incoming samples")
+        ("freq", po::value<double>(&freq)->default_value(0), "rf center frequency in Hz")
+        ("gain", po::value<float>(&gain)->default_value(0), "gain for the RF chain")
+    ;
+    po::variables_map vm;
+    po::store(po::parse_command_line(argc, argv, desc), vm);
+    po::notify(vm);
+
+    //print the help message
+    if (vm.count("help")){
+        std::cout << boost::format("UHD RX to File %s") % desc << std::endl;
+        return ~0;
+    }
+
+    //create a usrp device
+    std::cout << std::endl;
+    std::cout << boost::format("Creating the usrp device with: %s...") % args << std::endl;
+    uhd::usrp::single_usrp::sptr sdev = uhd::usrp::single_usrp::make(args);
+    uhd::device::sptr dev = sdev->get_device();
+    std::cout << boost::format("Using Device: %s") % sdev->get_pp_string() << std::endl;
+
+    //set the rx sample rate
+    std::cout << boost::format("Setting RX Rate: %f Msps...") % (rate/1e6) << std::endl;
+    sdev->set_rx_rate(rate);
+    std::cout << boost::format("Actual RX Rate: %f Msps...") % (sdev->get_rx_rate()/1e6) << std::endl << std::endl;
+
+    //set the rx center frequency
+    std::cout << boost::format("Setting RX Freq: %f Mhz...") % (freq/1e6) << std::endl;
+    sdev->set_rx_freq(freq);
+    std::cout << boost::format("Actual RX Freq: %f Mhz...") % (sdev->get_rx_freq()/1e6) << std::endl << std::endl;
+
+    //set the rx rf gain
+    std::cout << boost::format("Setting RX Gain: %f dB...") % gain << std::endl;
+    sdev->set_rx_gain(gain);
+    std::cout << boost::format("Actual RX Gain: %f dB...") % sdev->get_rx_gain() << std::endl << std::endl;
+
+    boost::this_thread::sleep(boost::posix_time::seconds(1)); //allow for some setup time
+    std::cout << "LO Locked = " << sdev->get_rx_lo_locked() << std::endl;
+
+    //setup streaming
+    uhd::stream_cmd_t stream_cmd(uhd::stream_cmd_t::STREAM_MODE_NUM_SAMPS_AND_DONE);
+    stream_cmd.num_samps = total_num_samps;
+    stream_cmd.stream_now = true;
+    sdev->issue_stream_cmd(stream_cmd);
+
+    //loop until total number of samples reached
+    size_t num_acc_samps = 0; //number of accumulated samples
+    uhd::rx_metadata_t md;
+    std::vector<std::complex<short> > buff(dev->get_max_recv_samps_per_packet());
+    std::ofstream outfile(file.c_str(), std::ofstream::binary);
+
+    while(num_acc_samps < total_num_samps){
+        size_t num_rx_samps = dev->recv(
+            &buff.front(), buff.size(), md,
+            uhd::io_type_t::COMPLEX_INT16,
+            uhd::device::RECV_MODE_ONE_PACKET
+        );
+
+        //handle the error codes
+        switch(md.error_code){
+        case uhd::rx_metadata_t::ERROR_CODE_NONE:
+            break;
+
+        case uhd::rx_metadata_t::ERROR_CODE_TIMEOUT:
+            if (num_acc_samps == 0) continue;
+            std::cout << boost::format(
+                "Got timeout before all samples received, possible packet loss, exiting loop..."
+            ) << std::endl;
+            goto done_loop;
+
+        default:
+            std::cout << boost::format(
+                "Got error code 0x%x, exiting loop..."
+            ) % md.error_code << std::endl;
+            goto done_loop;
+        }
+
+        //write complex short integer samples to the binary file
+        outfile.write((const char*)&buff[0], num_rx_samps * sizeof(std::complex<short>));
+
+        num_acc_samps += num_rx_samps;
+    } done_loop:
+
+    outfile.close();
+
+    //finished
+    std::cout << std::endl << "Done!" << std::endl << std::endl;
+
+    return 0;
+}
diff --git a/host/examples/rx_samples_to_udp.cpp b/host/examples/rx_samples_to_udp.cpp
new file mode 100644
index 000000000..488c95494
--- /dev/null
+++ b/host/examples/rx_samples_to_udp.cpp
@@ -0,0 +1,135 @@
+//
+// Copyright 2010 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
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+#include <uhd/utils/thread_priority.hpp>
+#include <uhd/utils/safe_main.hpp>
+#include <uhd/usrp/single_usrp.hpp>
+#include <uhd/transport/udp_simple.hpp>
+#include <boost/program_options.hpp>
+#include <boost/format.hpp>
+#include <boost/thread.hpp>
+#include <iostream>
+#include <complex>
+
+namespace po = boost::program_options;
+
+int UHD_SAFE_MAIN(int argc, char *argv[]){
+    uhd::set_thread_priority_safe();
+
+    //variables to be set by po
+    std::string args;
+    size_t total_num_samps;
+    double rate, freq;
+    float gain;
+    std::string addr, port;
+
+    //setup the program options
+    po::options_description desc("Allowed options");
+    desc.add_options()
+        ("help", "help message")
+        ("args", po::value<std::string>(&args)->default_value(""), "single uhd device address args")
+        ("nsamps", po::value<size_t>(&total_num_samps)->default_value(1000), "total number of samples to receive")
+        ("rate", po::value<double>(&rate)->default_value(100e6/16), "rate of incoming samples")
+        ("freq", po::value<double>(&freq)->default_value(0), "rf center frequency in Hz")
+        ("gain", po::value<float>(&gain)->default_value(0), "gain for the RF chain")
+        ("port", po::value<std::string>(&port)->default_value("7124"), "server udp port")
+        ("addr", po::value<std::string>(&addr)->default_value("192.168.1.10"), "resolvable server address")
+    ;
+    po::variables_map vm;
+    po::store(po::parse_command_line(argc, argv, desc), vm);
+    po::notify(vm);
+
+    //print the help message
+    if (vm.count("help")){
+        std::cout << boost::format("UHD RX to UDP %s") % desc << std::endl;
+        return ~0;
+    }
+
+    //create a usrp device
+    std::cout << std::endl;
+    std::cout << boost::format("Creating the usrp device with: %s...") % args << std::endl;
+    uhd::usrp::single_usrp::sptr sdev = uhd::usrp::single_usrp::make(args);
+    uhd::device::sptr dev = sdev->get_device();
+    std::cout << boost::format("Using Device: %s") % sdev->get_pp_string() << std::endl;
+
+    //set the rx sample rate
+    std::cout << boost::format("Setting RX Rate: %f Msps...") % (rate/1e6) << std::endl;
+    sdev->set_rx_rate(rate);
+    std::cout << boost::format("Actual RX Rate: %f Msps...") % (sdev->get_rx_rate()/1e6) << std::endl << std::endl;
+
+    //set the rx center frequency
+    std::cout << boost::format("Setting RX Freq: %f Mhz...") % (freq/1e6) << std::endl;
+    sdev->set_rx_freq(freq);
+    std::cout << boost::format("Actual RX Freq: %f Mhz...") % (sdev->get_rx_freq()/1e6) << std::endl << std::endl;
+
+    //set the rx rf gain
+    std::cout << boost::format("Setting RX Gain: %f dB...") % gain << std::endl;
+    sdev->set_rx_gain(gain);
+    std::cout << boost::format("Actual RX Gain: %f dB...") % sdev->get_rx_gain() << std::endl << std::endl;
+
+    boost::this_thread::sleep(boost::posix_time::seconds(1)); //allow for some setup time
+    std::cout << "LO Locked = " << sdev->get_rx_lo_locked() << std::endl;
+
+    //setup streaming
+    uhd::stream_cmd_t stream_cmd(uhd::stream_cmd_t::STREAM_MODE_NUM_SAMPS_AND_DONE);
+    stream_cmd.num_samps = total_num_samps;
+    stream_cmd.stream_now = true;
+    sdev->issue_stream_cmd(stream_cmd);
+
+    //loop until total number of samples reached
+    size_t num_acc_samps = 0; //number of accumulated samples
+    uhd::rx_metadata_t md;
+    std::vector<std::complex<float> > buff(dev->get_max_recv_samps_per_packet());
+    uhd::transport::udp_simple::sptr udp_xport = uhd::transport::udp_simple::make_connected(addr, port);
+
+    while(num_acc_samps < total_num_samps){
+        size_t num_rx_samps = dev->recv(
+            &buff.front(), buff.size(), md,
+            uhd::io_type_t::COMPLEX_FLOAT32,
+            uhd::device::RECV_MODE_ONE_PACKET
+        );
+
+        //handle the error codes
+        switch(md.error_code){
+        case uhd::rx_metadata_t::ERROR_CODE_NONE:
+            break;
+
+        case uhd::rx_metadata_t::ERROR_CODE_TIMEOUT:
+            if (num_acc_samps == 0) continue;
+            std::cout << boost::format(
+                "Got timeout before all samples received, possible packet loss, exiting loop..."
+            ) << std::endl;
+            goto done_loop;
+
+        default:
+            std::cout << boost::format(
+                "Got error code 0x%x, exiting loop..."
+            ) % md.error_code << std::endl;
+            goto done_loop;
+        }
+
+        //send complex single precision floating point samples over udp
+        udp_xport->send(boost::asio::buffer(buff, num_rx_samps));
+
+        num_acc_samps += num_rx_samps;
+    } done_loop:
+
+    //finished
+    std::cout << std::endl << "Done!" << std::endl << std::endl;
+
+    return 0;
+}
diff --git a/host/examples/rx_timed_samples.cpp b/host/examples/rx_timed_samples.cpp
index 441665900..8a810811f 100644
--- a/host/examples/rx_timed_samples.cpp
+++ b/host/examples/rx_timed_samples.cpp
@@ -32,7 +32,7 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
     std::string args;
     time_t seconds_in_future;
     size_t total_num_samps;
-    double rx_rate, freq;
+    double rate, freq;
 
     //setup the program options
     po::options_description desc("Allowed options");
@@ -41,7 +41,7 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
         ("args", po::value<std::string>(&args)->default_value(""), "single uhd device address args")
         ("secs", po::value<time_t>(&seconds_in_future)->default_value(3), "number of seconds in the future to receive")
         ("nsamps", po::value<size_t>(&total_num_samps)->default_value(1000), "total number of samples to receive")
-        ("rxrate", po::value<double>(&rx_rate)->default_value(100e6/16), "rate of incoming samples")
+        ("rate", po::value<double>(&rate)->default_value(100e6/16), "rate of incoming samples")
         ("freq", po::value<double>(&freq)->default_value(0), "rf center frequency in Hz")
         ("dilv", "specify to disable inner-loop verbose")
     ;
@@ -64,12 +64,17 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
     uhd::device::sptr dev = sdev->get_device();
     std::cout << boost::format("Using Device: %s") % sdev->get_pp_string() << std::endl;
 
-    //set properties on the device
-    std::cout << boost::format("Setting RX Rate: %f Msps...") % (rx_rate/1e6) << std::endl;
-    sdev->set_rx_rate(rx_rate);
-    std::cout << boost::format("Actual RX Rate: %f Msps...") % (sdev->get_rx_rate()/1e6) << std::endl;
-    std::cout << boost::format("Setting device timestamp to 0...") << std::endl;
+    //set the rx sample rate
+    std::cout << boost::format("Setting RX Rate: %f Msps...") % (rate/1e6) << std::endl;
+    sdev->set_rx_rate(rate);
+    std::cout << boost::format("Actual RX Rate: %f Msps...") % (sdev->get_rx_rate()/1e6) << std::endl << std::endl;
+
+    //set the rx center frequency
+    std::cout << boost::format("Setting RX Freq: %f Mhz...") % (freq/1e6) << std::endl;
     sdev->set_rx_freq(freq);
+    std::cout << boost::format("Actual RX Freq: %f Mhz...") % (sdev->get_rx_freq()/1e6) << std::endl << std::endl;
+
+    std::cout << boost::format("Setting device timestamp to 0...") << std::endl;
     sdev->set_time_now(uhd::time_spec_t(0.0));
 
     //setup streaming
diff --git a/host/examples/tx_timed_samples.cpp b/host/examples/tx_timed_samples.cpp
index 863446682..799da37e0 100644
--- a/host/examples/tx_timed_samples.cpp
+++ b/host/examples/tx_timed_samples.cpp
@@ -33,7 +33,7 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
     time_t seconds_in_future;
     size_t total_num_samps;
     size_t samps_per_packet;
-    double tx_rate, freq;
+    double rate, freq;
     float ampl;
 
     //setup the program options
@@ -44,7 +44,7 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
         ("secs", po::value<time_t>(&seconds_in_future)->default_value(3), "number of seconds in the future to transmit")
         ("nsamps", po::value<size_t>(&total_num_samps)->default_value(1000), "total number of samples to transmit")
         ("spp", po::value<size_t>(&samps_per_packet)->default_value(1000), "number of samples per packet")
-        ("txrate", po::value<double>(&tx_rate)->default_value(100e6/16), "rate of outgoing samples")
+        ("rate", po::value<double>(&rate)->default_value(100e6/16), "rate of outgoing samples")
         ("freq", po::value<double>(&freq)->default_value(0), "rf center frequency in Hz")
         ("ampl", po::value<float>(&ampl)->default_value(float(0.3)), "amplitude of each sample")
         ("dilv", "specify to disable inner-loop verbose")
@@ -68,12 +68,17 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
     uhd::device::sptr dev = sdev->get_device();
     std::cout << boost::format("Using Device: %s") % sdev->get_pp_string() << std::endl;
 
-    //set properties on the device
-    std::cout << boost::format("Setting TX Rate: %f Msps...") % (tx_rate/1e6) << std::endl;
-    sdev->set_tx_rate(tx_rate);
-    std::cout << boost::format("Actual TX Rate: %f Msps...") % (sdev->get_tx_rate()/1e6) << std::endl;
-    std::cout << boost::format("Setting device timestamp to 0...") << std::endl;
+    //set the tx sample rate
+    std::cout << boost::format("Setting TX Rate: %f Msps...") % (rate/1e6) << std::endl;
+    sdev->set_tx_rate(rate);
+    std::cout << boost::format("Actual TX Rate: %f Msps...") % (sdev->get_tx_rate()/1e6) << std::endl << std::endl;
+
+    //set the tx center frequency
+    std::cout << boost::format("Setting TX Freq: %f Mhz...") % (freq/1e6) << std::endl;
     sdev->set_tx_freq(freq);
+    std::cout << boost::format("Actual TX Freq: %f Mhz...") % (sdev->get_tx_freq()/1e6) << std::endl << std::endl;
+
+    std::cout << boost::format("Setting device timestamp to 0...") << std::endl;
     sdev->set_time_now(uhd::time_spec_t(0.0));
 
     //allocate data to send
diff --git a/host/lib/CMakeLists.txt b/host/lib/CMakeLists.txt
index 81845de21..e4de7bcc7 100644
--- a/host/lib/CMakeLists.txt
+++ b/host/lib/CMakeLists.txt
@@ -16,6 +16,25 @@
 #
 
 ########################################################################
+# Check Python Modules
+########################################################################
+PYTHON_CHECK_MODULE(
+    "Python version 2.6 or greater"
+    "platform" "platform.python_version() >= '2.6'"
+    HAVE_PYTHON_PLAT_MIN_VERSION
+)
+
+PYTHON_CHECK_MODULE(
+    "Cheetah templates 2.0.0 or greater"
+    "Cheetah" "Cheetah.Version >= '2.0.0'"
+    HAVE_PYTHON_MODULE_CHEETAH
+)
+
+IF(NOT HAVE_PYTHON_PLAT_MIN_VERSION OR NOT HAVE_PYTHON_MODULE_CHEETAH)
+    MESSAGE(FATAL_ERROR "Error: python requirements not met for the build system.")
+ENDIF(NOT HAVE_PYTHON_PLAT_MIN_VERSION OR NOT HAVE_PYTHON_MODULE_CHEETAH)
+
+########################################################################
 # Helpful Macros
 ########################################################################
 MACRO(LIBUHD_APPEND_SOURCES)
diff --git a/host/lib/usrp/dboard/db_basic_and_lf.cpp b/host/lib/usrp/dboard/db_basic_and_lf.cpp
index 7d0146ef0..73f894374 100644
--- a/host/lib/usrp/dboard/db_basic_and_lf.cpp
+++ b/host/lib/usrp/dboard/db_basic_and_lf.cpp
@@ -31,6 +31,16 @@ using namespace uhd::usrp;
 using namespace boost::assign;
 
 /***********************************************************************
+ * Constants
+ **********************************************************************/
+static const uhd::dict<std::string, double> subdev_bandwidth_scalar = map_list_of
+    ("A", 1.0)
+    ("B", 1.0)
+    ("AB", 2.0)
+    ("BA", 2.0)
+;
+
+/***********************************************************************
  * The basic and lf boards:
  *   They share a common class because only the frequency bounds differ.
  **********************************************************************/
@@ -168,7 +178,7 @@ void basic_rx::rx_get(const wax::obj &key_, wax::obj &val){
         return;
 
     case SUBDEV_PROP_BANDWIDTH:
-        val = 2*_max_freq; //we want complex double-sided
+        val = subdev_bandwidth_scalar[get_subdev_name()]*_max_freq;
         return;
 
     default: UHD_THROW_PROP_GET_ERROR();
@@ -279,7 +289,7 @@ void basic_tx::tx_get(const wax::obj &key_, wax::obj &val){
         return;
 
     case SUBDEV_PROP_BANDWIDTH:
-        val = 2*_max_freq; //we want complex double-sided
+        val = subdev_bandwidth_scalar[get_subdev_name()]*_max_freq;
         return;
 
     default: UHD_THROW_PROP_GET_ERROR();
diff --git a/host/lib/usrp/dboard/db_rfx.cpp b/host/lib/usrp/dboard/db_rfx.cpp
index 12e458d8c..152198c3a 100644
--- a/host/lib/usrp/dboard/db_rfx.cpp
+++ b/host/lib/usrp/dboard/db_rfx.cpp
@@ -458,7 +458,7 @@ void rfx_xcvr::rx_get(const wax::obj &key_, wax::obj &val){
         return;
 
     case SUBDEV_PROP_BANDWIDTH:
-        val = 2*20.0e6; //30MHz low-pass, we want complex double-sided
+        val = 2*20.0e6; //20MHz low-pass, we want complex double-sided
         return;
 
     default: UHD_THROW_PROP_GET_ERROR();
@@ -555,7 +555,7 @@ void rfx_xcvr::tx_get(const wax::obj &key_, wax::obj &val){
         return;
 
     case SUBDEV_PROP_BANDWIDTH:
-        val = 2*20.0e6; //30MHz low-pass, we want complex double-sided
+        val = 2*20.0e6; //20MHz low-pass, we want complex double-sided
         return;
 
     default: UHD_THROW_PROP_GET_ERROR();
diff --git a/host/lib/usrp/dboard/db_tvrx.cpp b/host/lib/usrp/dboard/db_tvrx.cpp
index 1f3c76556..2873e3d54 100644
--- a/host/lib/usrp/dboard/db_tvrx.cpp
+++ b/host/lib/usrp/dboard/db_tvrx.cpp
@@ -460,7 +460,7 @@ void tvrx::rx_get(const wax::obj &key_, wax::obj &val){
         return;
 
     case SUBDEV_PROP_BANDWIDTH:
-        val = 6.0e6; //30MHz low-pass, we want complex double-sided
+        val = 6.0e6;
         return;
 
     default: UHD_THROW_PROP_GET_ERROR();
diff --git a/host/lib/usrp/dboard/db_wbx.cpp b/host/lib/usrp/dboard/db_wbx.cpp
index 647f1b975..572f5de97 100644
--- a/host/lib/usrp/dboard/db_wbx.cpp
+++ b/host/lib/usrp/dboard/db_wbx.cpp
@@ -527,7 +527,7 @@ void wbx_xcvr::rx_get(const wax::obj &key_, wax::obj &val){
         return;
 
     case SUBDEV_PROP_BANDWIDTH:
-        val = 2*30.0e6; //20MHz low-pass, we want complex double-sided
+        val = 2*20.0e6; //20MHz low-pass, we want complex double-sided
         return;
 
     default: UHD_THROW_PROP_GET_ERROR();
@@ -628,7 +628,7 @@ void wbx_xcvr::tx_get(const wax::obj &key_, wax::obj &val){
         return;
 
     case SUBDEV_PROP_BANDWIDTH:
-        val = 2*30.0e6; //20MHz low-pass, we want complex double-sided
+        val = 2*20.0e6; //20MHz low-pass, we want complex double-sided
         return;
 
     default: UHD_THROW_PROP_GET_ERROR();
diff --git a/host/lib/usrp/misc_utils.cpp b/host/lib/usrp/misc_utils.cpp
index 7e49baa52..5856d706f 100644
--- a/host/lib/usrp/misc_utils.cpp
+++ b/host/lib/usrp/misc_utils.cpp
@@ -164,13 +164,13 @@ static void verify_xx_subdev_spec(
         }
 
         //sanity check that the dboard/subdevice names exist for this mboard
-        BOOST_FOREACH(const subdev_spec_pair_t &pair, subdev_spec){
+        BOOST_FOREACH(subdev_spec_pair_t &pair, subdev_spec){
             //empty db name means select dboard automatically
             if (pair.db_name.empty()){
                 if (dboard_names.size() != 1) throw std::runtime_error(
                     "A daughterboard name must be provided for multi-slot motherboards: " + subdev_spec.to_string()
                 );
-                pair.db_name == dboard_names.front();
+                pair.db_name = dboard_names.front();
             }
             uhd::assert_has(dboard_names, pair.db_name, xx_type + " dboard name");
             wax::obj dboard = mboard[named_prop_t(dboard_prop, pair.db_name)];
@@ -181,7 +181,7 @@ static void verify_xx_subdev_spec(
                 if (subdev_names.size() != 1) throw std::runtime_error(
                     "A subdevice name must be provided for multi-subdev daughterboards: " + subdev_spec.to_string()
                 );
-                pair.sd_name == subdev_names.front();
+                pair.sd_name = subdev_names.front();
             }
             uhd::assert_has(subdev_names, pair.sd_name, xx_type + " subdev name");
         }