e3xx: filter API implementation. Supports listing of RX/TX filters, querying RX/TX filter information and writing of analog and FIR filters

4 files changed, 52 insertions, 0 deletions

diff --git a/host/lib/usrp/e300/e300_impl.cpp b/host/lib/usrp/e300/e300_impl.cpp
index 8be3e47c9..40904bda7 100644
--- a/host/lib/usrp/e300/e300_impl.cpp
+++ b/host/lib/usrp/e300/e300_impl.cpp
@@ -1056,6 +1056,18 @@ void e300_impl::_setup_radio(const size_t dspno)
         _tree->create<meta_range_t>(rf_fe_path / "freq" / "range")
             .publish(boost::bind(&ad9361_ctrl::get_rf_freq_range));
 
+        //only in local mode
+        if(_xport_path == AXI) {
+            //add all frontend filters
+            std::vector<std::string> filter_names = _codec_ctrl->get_filter_names(key);
+            for(size_t i = 0;i < filter_names.size(); i++)
+            {
+                _tree->create<filter_info_base::sptr>(rf_fe_path / "filters" / filter_names[i] / "value" )
+                    .publish(boost::bind(&ad9361_ctrl::get_filter, _codec_ctrl, key, filter_names[i]))
+                    .subscribe(boost::bind(&ad9361_ctrl::set_filter, _codec_ctrl, key, filter_names[i], _1));
+            }
+        }
+
         //setup RX related stuff
         if (key[0] == 'R') {
             static const std::vector<std::string> ants = boost::assign::list_of("TX/RX")("RX2");
diff --git a/host/lib/usrp/e300/e300_network.cpp b/host/lib/usrp/e300/e300_network.cpp
index cb06a5740..2a63abc25 100644
--- a/host/lib/usrp/e300/e300_network.cpp
+++ b/host/lib/usrp/e300/e300_network.cpp
@@ -245,6 +245,9 @@ static void e300_codec_ctrl_tunnel(
                     _codec_ctrl->set_agc_mode(which_str, "fast");
                 }
                 break;
+            case codec_xact_t::ACTION_SET_BW:
+                out->bw = _codec_ctrl->set_bw_filter(which_str, in->bw);
+                break;
             default:
                 UHD_MSG(status) << "Got unknown request?!" << std::endl;
                 //Zero out actions to fail this request on client
diff --git a/host/lib/usrp/e300/e300_remote_codec_ctrl.cpp b/host/lib/usrp/e300/e300_remote_codec_ctrl.cpp
index 871885a7b..c78946a6c 100644
--- a/host/lib/usrp/e300/e300_remote_codec_ctrl.cpp
+++ b/host/lib/usrp/e300/e300_remote_codec_ctrl.cpp
@@ -194,6 +194,40 @@ public:
        _transact();
     }
 
+    //! set the filter bandwidth for the frontend's analog low pass
+    double set_bw_filter(const std::string &which, const double bw)
+    {
+        _clear();
+        _args.action = uhd::htonx<boost::uint32_t>(transaction_t::ACTION_SET_BW);
+        if (which == "TX1")      _args.which = uhd::htonx<boost::uint32_t>(transaction_t::CHAIN_TX1);
+        else if (which == "TX2") _args.which = uhd::htonx<boost::uint32_t>(transaction_t::CHAIN_TX2);
+        else if (which == "RX1") _args.which = uhd::htonx<boost::uint32_t>(transaction_t::CHAIN_RX1);
+        else if (which == "RX2") _args.which = uhd::htonx<boost::uint32_t>(transaction_t::CHAIN_RX2);
+        else throw std::runtime_error("e300_remote_codec_ctrl_impl incorrect chain string.");
+        _args.bw = bw;
+
+        _transact();
+        return _retval.bw;
+    }
+
+    //! List all available filters by name
+    std::vector<std::string> get_filter_names(const std::string &)
+    {
+        UHD_THROW_INVALID_CODE_PATH();
+    }
+
+    //! Return a list of all filters
+    filter_info_base::sptr get_filter(const std::string &, const std::string &)
+    {
+        UHD_THROW_INVALID_CODE_PATH();
+    }
+
+    //! Write back a filter
+    void set_filter(const std::string &, const std::string &, const filter_info_base::sptr)
+    {
+        UHD_THROW_INVALID_CODE_PATH();
+    }
+
 private:
     void _transact() {
         {
diff --git a/host/lib/usrp/e300/e300_remote_codec_ctrl.hpp b/host/lib/usrp/e300/e300_remote_codec_ctrl.hpp
index 459d0ec55..065c5e7a0 100644
--- a/host/lib/usrp/e300/e300_remote_codec_ctrl.hpp
+++ b/host/lib/usrp/e300/e300_remote_codec_ctrl.hpp
@@ -35,6 +35,7 @@ public:
             double          freq;
             double          rssi;
             double          temp;
+            double          bw;
             boost::uint32_t use_dc_correction;
             boost::uint32_t use_iq_correction;
             boost::uint32_t use_agc;
@@ -54,6 +55,8 @@ public:
         static const boost::uint32_t ACTION_SET_IQ_BALANCE_AUTO = 18;
         static const boost::uint32_t ACTION_SET_AGC             = 19;
         static const boost::uint32_t ACTION_SET_AGC_MODE        = 20;
+        static const boost::uint32_t ACTION_SET_BW              = 21;
+
 
         //Values for "which"
         static const boost::uint32_t CHAIN_NONE = 0;