uhd: Add APIs for getting the available power range

The previously added APIs for getting/setting power reference levels was
missing an option to read back the currently available power levels
(minimum and maximum power levels).
This adds getters for TX and RX power ranges to multi_usrp and
radio_control. The power API is thus now more similar to the gain API,
which always had getters for gain ranges.

3 files changed, 35 insertions, 0 deletions

diff --git a/host/lib/usrp/multi_usrp.cpp b/host/lib/usrp/multi_usrp.cpp
index 03a2a169c..e3424d748 100644
--- a/host/lib/usrp/multi_usrp.cpp
+++ b/host/lib/usrp/multi_usrp.cpp
@@ -1730,6 +1730,17 @@ public:
         return _tree->access<double>(power_ref_path).get();
     }
 
+    meta_range_t get_rx_power_range(const size_t chan)
+    {
+        const auto power_ref_path = rx_rf_fe_root(chan) / "ref_power/range";
+        if (!_tree->exists(power_ref_path)) {
+            throw uhd::not_implemented_error(
+                "get_rx_power_range() not available for this device and channel");
+        }
+        return _tree->access<meta_range_t>(power_ref_path).get();
+
+    }
+
     void set_rx_antenna(const std::string& ant, size_t chan)
     {
         _tree->access<std::string>(rx_rf_fe_root(chan) / "antenna" / "value").set(ant);
@@ -2230,6 +2241,16 @@ public:
         return _tree->access<double>(power_ref_path).get();
     }
 
+    meta_range_t get_tx_power_range(const size_t chan)
+    {
+        const auto power_ref_path = tx_rf_fe_root(chan) / "ref_power/range";
+        if (!_tree->exists(power_ref_path)) {
+            throw uhd::not_implemented_error(
+                "get_tx_power_range() not available for this device and channel");
+        }
+        return _tree->access<meta_range_t>(power_ref_path).get();
+    }
+
     void set_tx_antenna(const std::string& ant, size_t chan)
     {
         _tree->access<std::string>(tx_rf_fe_root(chan) / "antenna" / "value").set(ant);
diff --git a/host/lib/usrp/multi_usrp_python.hpp b/host/lib/usrp/multi_usrp_python.hpp
index 6c2fd2ccf..cec901315 100644
--- a/host/lib/usrp/multi_usrp_python.hpp
+++ b/host/lib/usrp/multi_usrp_python.hpp
@@ -130,6 +130,7 @@ void export_multi_usrp(py::module& m)
         .def("has_rx_power_reference"  , &multi_usrp::has_rx_power_reference, py::arg("chan") = 0)
         .def("set_rx_power_reference"  , &multi_usrp::set_rx_power_reference, py::arg("power_dbm"), py::arg("chan") = 0)
         .def("get_rx_power_reference"  , &multi_usrp::get_rx_power_reference, py::arg("chan") = 0)
+        .def("get_rx_power_range"      , &multi_usrp::get_rx_power_range, py::arg("chan") = 0)
 
         // TX methods
         .def("set_tx_subdev_spec"      , &multi_usrp::set_tx_subdev_spec, py::arg("spec"), py::arg("mboard") = ALL_MBOARDS)
@@ -171,6 +172,7 @@ void export_multi_usrp(py::module& m)
         .def("has_tx_power_reference"  , &multi_usrp::has_tx_power_reference, py::arg("chan") = 0)
         .def("set_tx_power_reference"  , &multi_usrp::set_tx_power_reference, py::arg("power_dbm"), py::arg("chan") = 0)
         .def("get_tx_power_reference"  , &multi_usrp::get_tx_power_reference, py::arg("chan") = 0)
+        .def("get_tx_power_range"      , &multi_usrp::get_tx_power_range, py::arg("chan") = 0)
 
         // GPIO methods
         .def("get_gpio_banks"          , &multi_usrp::get_gpio_banks)
diff --git a/host/lib/usrp/multi_usrp_rfnoc.cpp b/host/lib/usrp/multi_usrp_rfnoc.cpp
index 26932ef30..659d879e8 100644
--- a/host/lib/usrp/multi_usrp_rfnoc.cpp
+++ b/host/lib/usrp/multi_usrp_rfnoc.cpp
@@ -1484,6 +1484,12 @@ public:
         return rx_chain.radio->get_rx_power_reference(rx_chain.block_chan);
     }
 
+    meta_range_t get_rx_power_range(const size_t chan)
+    {
+        auto& rx_chain = _get_rx_chan(chan);
+        return rx_chain.radio->get_rx_power_range(rx_chain.block_chan);
+    }
+
     void set_rx_antenna(const std::string& ant, size_t chan = 0)
     {
         MUX_RX_API_CALL(set_rx_antenna, ant);
@@ -1955,6 +1961,12 @@ public:
         return tx_chain.radio->get_tx_power_reference(tx_chain.block_chan);
     }
 
+    meta_range_t get_tx_power_range(const size_t chan)
+    {
+        auto& tx_chain = _get_tx_chan(chan);
+        return tx_chain.radio->get_tx_power_range(tx_chain.block_chan);
+    }
+
     void set_tx_antenna(const std::string& ant, size_t chan = 0)
     {
         MUX_TX_API_CALL(set_tx_antenna, ant);