From c63a38e1f9b383663e5bb52a1ae35b54bbc0104e Mon Sep 17 00:00:00 2001
From: Josh Blum <josh@joshknows.com>
Date: Sun, 23 Oct 2011 18:02:43 -0700
Subject: usrp: add api call to adjust phase/mag imbalance

---
 host/include/uhd/usrp/multi_usrp.hpp | 20 +++++++++++++++++++-
 host/lib/usrp/multi_usrp.cpp         | 20 ++++++++++++++++++++
 2 files changed, 39 insertions(+), 1 deletion(-)

(limited to 'host')

diff --git a/host/include/uhd/usrp/multi_usrp.hpp b/host/include/uhd/usrp/multi_usrp.hpp
index 9fbc9cfe6..1cbe3a684 100644
--- a/host/include/uhd/usrp/multi_usrp.hpp
+++ b/host/include/uhd/usrp/multi_usrp.hpp
@@ -22,6 +22,7 @@
 #define UHD_USRP_MULTI_USRP_REF_SOURCES_API
 #define UHD_USRP_MULTI_USRP_GET_RATES_API
 #define UHD_USRP_MULTI_USRP_DC_OFFSET_API
+#define UHD_USRP_MULTI_USRP_CORRECTION_API
 
 #include <uhd/config.hpp>
 #include <uhd/device.hpp>
@@ -530,7 +531,6 @@ public:
      */
     virtual std::vector<std::string> get_rx_sensor_names(size_t chan = 0) = 0;
 
-
     /*!
      * Enable/disable the automatic RX DC offset correction.
      * The automatic correction subtracts out the long-run average.
@@ -554,6 +554,15 @@ public:
      */
     virtual void set_rx_dc_offset(const std::complex<double> &offset, size_t chan = ALL_CHANS) = 0;
 
+    /*!
+     * Set the RX frontend IQ imbalance and gain correction.
+     * Use this to adjust the magnitude and phase of I and Q.
+     *
+     * \param correction the complex correction value
+     * \param chan the channel index 0 to N-1
+     */
+    virtual void set_rx_correction(const std::complex<double> &correction, size_t chan = ALL_CHANS) = 0;
+
     /*******************************************************************
      * TX methods
      ******************************************************************/
@@ -759,6 +768,15 @@ public:
      */
     virtual void set_tx_dc_offset(const std::complex<double> &offset, size_t chan = ALL_CHANS) = 0;
 
+    /*!
+     * Set the TX frontend IQ imbalance and gain correction.
+     * Use this to adjust the magnitude and phase of I and Q.
+     *
+     * \param correction the complex correction value
+     * \param chan the channel index 0 to N-1
+     */
+    virtual void set_tx_correction(const std::complex<double> &correction, size_t chan = ALL_CHANS) = 0;
+
 };
 
 }}
diff --git a/host/lib/usrp/multi_usrp.cpp b/host/lib/usrp/multi_usrp.cpp
index 5fff989ce..5a6acc2c5 100644
--- a/host/lib/usrp/multi_usrp.cpp
+++ b/host/lib/usrp/multi_usrp.cpp
@@ -567,6 +567,16 @@ public:
         }
     }
 
+    void set_rx_correction(const std::complex<double> &offset, size_t chan){
+        if (chan != ALL_CHANS){
+            _tree->access<std::complex<double> >(rx_rf_fe_root(chan).branch_path() / "correction" / "value").set(offset);
+            return;
+        }
+        for (size_t c = 0; c < get_rx_num_channels(); c++){
+            this->set_rx_correction(offset, c);
+        }
+    }
+
     /*******************************************************************
      * TX methods
      ******************************************************************/
@@ -691,6 +701,16 @@ public:
         }
     }
 
+    void set_tx_correction(const std::complex<double> &offset, size_t chan){
+        if (chan != ALL_CHANS){
+            _tree->access<std::complex<double> >(tx_rf_fe_root(chan).branch_path() / "correction" / "value").set(offset);
+            return;
+        }
+        for (size_t c = 0; c < get_tx_num_channels(); c++){
+            this->set_tx_correction(offset, c);
+        }
+    }
+
 private:
     device::sptr _dev;
     property_tree::sptr _tree;
-- 
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