From 23729861a2020359b9c920347bd2d7c43d96ebf8 Mon Sep 17 00:00:00 2001
From: Julian Arnold <julian.arnold@ettus.com>
Date: Tue, 16 Dec 2014 12:08:56 -0800
Subject: e300: rssi sensor network support

---
 host/lib/usrp/e300/e300_impl.cpp              |  5 +++--
 host/lib/usrp/e300/e300_network.cpp           |  3 +++
 host/lib/usrp/e300/e300_remote_codec_ctrl.cpp | 14 ++++++++++++++
 host/lib/usrp/e300/e300_remote_codec_ctrl.hpp |  2 ++
 4 files changed, 22 insertions(+), 2 deletions(-)

(limited to 'host/lib/usrp/e300')

diff --git a/host/lib/usrp/e300/e300_impl.cpp b/host/lib/usrp/e300/e300_impl.cpp
index e42ac390e..59788fbea 100644
--- a/host/lib/usrp/e300/e300_impl.cpp
+++ b/host/lib/usrp/e300/e300_impl.cpp
@@ -1097,14 +1097,15 @@ 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));
 
-        //setup antenna stuff
+        //setup RX related stuff
         if (key[0] == 'R') {
             static const std::vector<std::string> ants = boost::assign::list_of("TX/RX")("RX2");
             _tree->create<std::vector<std::string> >(rf_fe_path / "antenna" / "options").set(ants);
             _tree->create<std::string>(rf_fe_path / "antenna" / "value")
                 .subscribe(boost::bind(&e300_impl::_update_antenna_sel, this, dspno, _1))
                 .set("RX2");
-
+            _tree->create<sensor_value_t>(rf_fe_path / "sensors" / "rssi")
+                .publish(boost::bind(&ad9361_ctrl::get_rssi, _codec_ctrl, key));
         }
         if (key[0] == 'T') {
             static const std::vector<std::string> ants(1, "TX/RX");
diff --git a/host/lib/usrp/e300/e300_network.cpp b/host/lib/usrp/e300/e300_network.cpp
index 883ff0c4f..6d36d8681 100644
--- a/host/lib/usrp/e300/e300_network.cpp
+++ b/host/lib/usrp/e300/e300_network.cpp
@@ -224,6 +224,9 @@ static void e300_codec_ctrl_tunnel(
                 _codec_ctrl->data_port_loopback(
                     uhd::ntohx<boost::uint32_t>(in->bits) & 1);
                 break;
+            case codec_xact_t::ACTION_GET_RSSI:
+                out->rssi = _codec_ctrl->get_rssi(which_str).to_real();
+                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 bcc8ee4cf..ed8131e2f 100644
--- a/host/lib/usrp/e300/e300_remote_codec_ctrl.cpp
+++ b/host/lib/usrp/e300/e300_remote_codec_ctrl.cpp
@@ -106,6 +106,20 @@ public:
         _transact();
     }
 
+    sensor_value_t get_rssi(const std::string &which)
+    {
+        _clear();
+        _args.action = uhd::htonx<boost::uint32_t>(transaction_t::ACTION_GET_RSSI);
+        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.bits = uhd::htonx<boost::uint32_t>(0);
+
+        _transact();
+
+        return sensor_value_t("RSSI", _retval.rssi, "dB");
+    }
+
 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 015ad8323..cbc4b52d2 100644
--- a/host/lib/usrp/e300/e300_remote_codec_ctrl.hpp
+++ b/host/lib/usrp/e300/e300_remote_codec_ctrl.hpp
@@ -33,6 +33,7 @@ public:
             double          rate;
             double          gain;
             double          freq;
+            double          rssi;
             boost::uint64_t bits;
         };
 
@@ -42,6 +43,7 @@ public:
         static const boost::uint32_t ACTION_SET_ACTIVE_CHANS    = 12;
         static const boost::uint32_t ACTION_TUNE                = 13;
         static const boost::uint32_t ACTION_SET_LOOPBACK        = 14;
+        static const boost::uint32_t ACTION_GET_RSSI            = 15;
 
         //Values for "which"
         static const boost::uint32_t CHAIN_NONE = 0;
-- 
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