From 9a9ca6dfad4b81c42f3cda6a44b018358999d701 Mon Sep 17 00:00:00 2001
From: Josh Blum <josh@joshknows.com>
Date: Fri, 16 Jul 2010 16:43:06 -0700
Subject: uhd: work on tune logic, and subdev connection logic

---
 host/include/uhd/usrp/subdev_props.hpp | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

(limited to 'host/include')

diff --git a/host/include/uhd/usrp/subdev_props.hpp b/host/include/uhd/usrp/subdev_props.hpp
index cb7027ff1..f7bdcd161 100644
--- a/host/include/uhd/usrp/subdev_props.hpp
+++ b/host/include/uhd/usrp/subdev_props.hpp
@@ -22,6 +22,22 @@
 
 namespace uhd{ namespace usrp{
 
+    /*!
+     * Possible subdev connection types:
+     *
+     * A complex subdevice is physically connected to both channels,
+     * which may be connected in one of two ways: IQ or QI (swapped).
+     *
+     * A real subdevice is only physically connected one channel,
+     * either only the I channel or only the Q channel.
+     */
+    enum subdev_conn_t{
+        SUBDEV_CONN_COMPLEX_IQ = 'C',
+        SUBDEV_CONN_COMPLEX_QI = 'c',
+        SUBDEV_CONN_REAL_I     = 'R',
+        SUBDEV_CONN_REAL_Q     = 'r'
+    };
+
     /*!
      * Possible device subdev properties
      */
@@ -36,8 +52,9 @@ namespace uhd{ namespace usrp{
         SUBDEV_PROP_ANTENNA           = 'a', //rw, std::string
         SUBDEV_PROP_ANTENNA_NAMES     = 'A', //ro, prop_names_t
         SUBDEV_PROP_LO_LOCKED         = 'L', //ro, bool
-        SUBDEV_PROP_QUADRATURE        = 'q', //ro, bool
-        SUBDEV_PROP_IQ_SWAPPED        = 'i', //ro, bool
+        SUBDEV_PROP_CONNECTION        = 'c', //ro, subdev_conn_t
+        //SUBDEV_PROP_QUADRATURE        = 'q', //ro, bool
+        //SUBDEV_PROP_IQ_SWAPPED        = 'i', //ro, bool
         SUBDEV_PROP_USE_LO_OFFSET     = 'l', //ro, bool
         SUBDEV_PROP_RSSI              = 'R', //ro, float
         SUBDEV_PROP_BANDWIDTH         = 'B'  //rw, double
-- 
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