3 files changed, 30 insertions, 14 deletions
diff --git a/host/lib/usrp/dboard/db_basic_and_lf.cpp b/host/lib/usrp/dboard/db_basic_and_lf.cpp
index f8236d598..0b6e4a75a 100644
--- a/host/lib/usrp/dboard/db_basic_and_lf.cpp
+++ b/host/lib/usrp/dboard/db_basic_and_lf.cpp
@@ -170,8 +170,8 @@ void basic_rx::rx_set(const wax::obj &key_, const wax::obj &val){
         return;
 
     case SUBDEV_PROP_ANTENNA:
-        UHD_ASSERT_THROW(val.as<std::string>() == std::string(""));
-        return;
+        if (val.as<std::string>().empty()) return;
+        throw std::runtime_error("no selectable antennas on this board");
 
     case SUBDEV_PROP_FREQ:
         return; // it wont do you much good, but you can set it
@@ -259,8 +259,8 @@ void basic_tx::tx_set(const wax::obj &key_, const wax::obj &val){
         return;
 
     case SUBDEV_PROP_ANTENNA:
-        UHD_ASSERT_THROW(val.as<std::string>() == std::string(""));
-        return;
+        if (val.as<std::string>().empty()) return;
+        throw std::runtime_error("no selectable antennas on this board");
 
     case SUBDEV_PROP_FREQ:
         return; // it wont do you much good, but you can set it
diff --git a/host/lib/usrp/simple_usrp.cpp b/host/lib/usrp/simple_usrp.cpp
index 5b4a58805..e573d0fc0 100644
--- a/host/lib/usrp/simple_usrp.cpp
+++ b/host/lib/usrp/simple_usrp.cpp
@@ -168,6 +168,10 @@ public:
         return _rx_subdev()[SUBDEV_PROP_RSSI].as<float>();
     }
 
+    dboard_iface::sptr get_rx_dboard_iface(void){
+        return _rx_dboard()[DBOARD_PROP_DBOARD_IFACE].as<dboard_iface::sptr>();
+    }
+
     /*******************************************************************
      * TX methods
      ******************************************************************/
@@ -232,16 +236,8 @@ public:
         return _tx_subdev()[SUBDEV_PROP_LO_LOCKED].as<bool>();
     }
 
-    /*******************************************************************
-     * Interface access methods
-     ******************************************************************/
-
-    wax::obj get_rx_dboard_iface(void) {
-        return _rx_dboard();
-    }
-
-    wax::obj get_tx_dboard_iface(void) {
-        return _tx_dboard();
+    dboard_iface::sptr get_tx_dboard_iface(void){
+        return _tx_dboard()[DBOARD_PROP_DBOARD_IFACE].as<dboard_iface::sptr>();
     }
 
 private:
diff --git a/host/lib/usrp/usrp2/dboard_iface.cpp b/host/lib/usrp/usrp2/dboard_iface.cpp
index cff13292b..c79044bce 100644
--- a/host/lib/usrp/usrp2/dboard_iface.cpp
+++ b/host/lib/usrp/usrp2/dboard_iface.cpp
@@ -51,6 +51,7 @@ public:
     void set_atr_reg(unit_t, atr_reg_t, boost::uint16_t);
     void set_gpio_ddr(unit_t, boost::uint16_t);
     void write_gpio(unit_t, boost::uint16_t);
+    void set_gpio_debug(unit_t, int);
     boost::uint16_t read_gpio(unit_t);
 
     void write_i2c(boost::uint8_t, const byte_vector_t &);
@@ -219,6 +220,25 @@ void usrp2_dboard_iface::set_atr_reg(unit_t unit, atr_reg_t atr, boost::uint16_t
     _iface->poke16(unit_to_atr_to_addr[unit][atr], value);
 }
 
+void usrp2_dboard_iface::set_gpio_debug(unit_t unit, int which){
+    this->set_gpio_ddr(unit, 0xffff); //all outputs
+
+    //calculate the new selection mux setting
+    boost::uint32_t new_sels = 0x0;
+    int sel = (which == 0)?
+        U2_FLAG_GPIO_SEL_DEBUG_0:
+        U2_FLAG_GPIO_SEL_DEBUG_1;
+    for(size_t i = 0; i < 16; i++){
+        new_sels |= sel << (i*2);
+    }
+
+    //write the selection mux value to register
+    switch(unit){
+    case UNIT_RX: _iface->poke32(_iface->regs.gpio_rx_sel, new_sels); return;
+    case UNIT_TX: _iface->poke32(_iface->regs.gpio_tx_sel, new_sels); return;
+    }
+}
+
 /***********************************************************************
  * SPI
  **********************************************************************/