uhd: Add ability to get and set command time through dboard_iface.

This creates a wb_iface child class called timed_wb_iface, which
adds support for timed commands.

3 files changed, 17 insertions, 2 deletions

diff --git a/host/lib/usrp/x300/x300_dboard_iface.cpp b/host/lib/usrp/x300/x300_dboard_iface.cpp
index eff5183e0..c286e805a 100644
--- a/host/lib/usrp/x300/x300_dboard_iface.cpp
+++ b/host/lib/usrp/x300/x300_dboard_iface.cpp
@@ -1,5 +1,5 @@
 //
-// Copyright 2013 Ettus Research LLC
+// Copyright 2013,2015 Ettus Research LLC
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -50,6 +50,9 @@ public:
     void _set_gpio_ddr(unit_t, boost::uint16_t);
     void _set_gpio_out(unit_t, boost::uint16_t);
 
+    void set_command_time(const uhd::time_spec_t& t);
+    uhd::time_spec_t get_command_time(void);
+
     void set_gpio_debug(unit_t, int);
     boost::uint16_t read_gpio(unit_t);
 
@@ -331,3 +334,13 @@ double x300_dboard_iface::read_aux_adc(unit_t unit, aux_adc_t which)
     //convert to voltage and return
     return 3.3*ad7922_regs.result/4095;
 }
+
+uhd::time_spec_t x300_dboard_iface::get_command_time()
+{
+    return _config.cmd_time_ctrl->get_time();
+}
+
+void x300_dboard_iface::set_command_time(const uhd::time_spec_t& t)
+{
+    _config.cmd_time_ctrl->set_time(t);
+}
diff --git a/host/lib/usrp/x300/x300_impl.cpp b/host/lib/usrp/x300/x300_impl.cpp
index 2de44a99d..809a56765 100644
--- a/host/lib/usrp/x300/x300_impl.cpp
+++ b/host/lib/usrp/x300/x300_impl.cpp
@@ -1014,6 +1014,7 @@ void x300_impl::setup_radio(const size_t mb_i, const std::string &slot_name)
     db_config.which_rx_clk = (slot_name == "A")? X300_CLOCK_WHICH_DB0_RX : X300_CLOCK_WHICH_DB1_RX;
     db_config.which_tx_clk = (slot_name == "A")? X300_CLOCK_WHICH_DB0_TX : X300_CLOCK_WHICH_DB1_TX;
     db_config.dboard_slot = (slot_name == "A")? 0 : 1;
+    db_config.cmd_time_ctrl = perif.ctrl;
     _dboard_ifaces[db_path] = x300_make_dboard_iface(db_config);
 
     //create a new dboard manager
@@ -1353,7 +1354,7 @@ void x300_impl::set_time_source_out(mboard_members_t &mb, const bool enb)
 void x300_impl::update_clock_source(mboard_members_t &mb, const std::string &source)
 {
     //Optimize for the case when the current source is internal and we are trying
-    //to set it to internal. This is the only case where we are guaranteed that 
+    //to set it to internal. This is the only case where we are guaranteed that
     //the clock has not gone away so we can skip setting the MUX and reseting the LMK.
     if (not (mb.current_refclk_src == "internal" and source == "internal")) {
         //Update the clock MUX on the motherboard to select the requested source
diff --git a/host/lib/usrp/x300/x300_impl.hpp b/host/lib/usrp/x300/x300_impl.hpp
index 70c5dccb4..342664ece 100644
--- a/host/lib/usrp/x300/x300_impl.hpp
+++ b/host/lib/usrp/x300/x300_impl.hpp
@@ -131,6 +131,7 @@ struct x300_dboard_iface_config_t
     x300_clock_which_t which_rx_clk;
     x300_clock_which_t which_tx_clk;
     boost::uint8_t dboard_slot;
+    uhd::timed_wb_iface::sptr cmd_time_ctrl;
 };
 
 uhd::usrp::dboard_iface::sptr x300_make_dboard_iface(const x300_dboard_iface_config_t &);