uhd: C API wrapper

* multi_usrp, multi_usrp_clock, and associated classes accessible through C
* Added Doxygen documentation explaining structure and API
* Simple RX and TX streaming examples
* Unit tests for different parts of C interface and C++ error conversion

3 files changed, 40 insertions, 1 deletions

diff --git a/host/lib/utils/CMakeLists.txt b/host/lib/utils/CMakeLists.txt
index 369920ac1..c5c975dfa 100644
--- a/host/lib/utils/CMakeLists.txt
+++ b/host/lib/utils/CMakeLists.txt
@@ -141,3 +141,9 @@ LIBUHD_APPEND_SOURCES(
     ${CMAKE_CURRENT_SOURCE_DIR}/tasks.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/thread_priority.cpp
 )
+
+IF(ENABLE_C_API)
+    LIBUHD_APPEND_SOURCES(
+        ${CMAKE_CURRENT_SOURCE_DIR}/thread_priority_c.cpp
+    )
+ENDIF(ENABLE_C_API)
diff --git a/host/lib/utils/thread_priority.cpp b/host/lib/utils/thread_priority.cpp
index af25d088a..98023c5aa 100644
--- a/host/lib/utils/thread_priority.cpp
+++ b/host/lib/utils/thread_priority.cpp
@@ -1,5 +1,5 @@
 //
-// Copyright 2010-2011 Ettus Research LLC
+// Copyright 2010-2011,2015 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
diff --git a/host/lib/utils/thread_priority_c.cpp b/host/lib/utils/thread_priority_c.cpp
new file mode 100644
index 000000000..fe019e51d
--- /dev/null
+++ b/host/lib/utils/thread_priority_c.cpp
@@ -0,0 +1,33 @@
+//
+// Copyright 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
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+#include <uhd/error.h>
+#include <uhd/utils/thread_priority.h>
+#include <uhd/utils/thread_priority.hpp>
+#include <uhd/utils/msg.hpp>
+#include <uhd/exception.hpp>
+#include <boost/format.hpp>
+#include <iostream>
+
+uhd_error uhd_set_thread_priority(
+    float priority,
+    bool realtime
+){
+    UHD_SAFE_C(
+        uhd::set_thread_priority(priority, realtime);
+    )
+}