1 files changed, 82 insertions, 0 deletions
diff --git a/firmware/usrp3/include/trace.h b/firmware/usrp3/include/trace.h
new file mode 100644
index 000000000..0daa231fe
--- /dev/null
+++ b/firmware/usrp3/include/trace.h
@@ -0,0 +1,82 @@
+//
+// 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/>.
+//
+
+#ifndef INCLUDED_TRACE_H
+#define INCLUDED_TRACE_H
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <printf.h>
+
+/*
+ * Enables basic conditional tracing support
+ * If UHD_FW_TRACE_LEVEL is defined, all messages
+ * with a verbosity >= UHD_FW_TRACE_LEVEL will be
+ * printed.
+ *
+ * An alternate way of defining the level is the "TRACE_LEVEL"
+ * variable in cmake. (eg. -DTRACE_LEVEL=13).
+ */
+//#define UHD_FW_TRACE_LEVEL 13
+
+typedef enum
+{
+    /* 0-9: Use for performance/restricted debugging */
+    ERROR = 10,
+    WARN  = 11,
+    INFO  = 12,
+    /* 13-19: Use for general debugging */
+    DEBUG = 20, //Verbose!
+} trace_level_t;
+
+static inline int _trace_typecheck_conv(trace_level_t lvl) {
+    return (int)lvl;
+}
+
+#define UHD_FW_PRINTF(...) printf(__VA_ARGS__)
+#define UHD_FW_BEAUTIFY_LVL(lvl) "[" #lvl "] "
+
+/*
+ * UHD_FW_TRACE(<log level>, <message>)
+ *  - Simple trace. Print the messages with the log level as the prefix and \n at the end
+ *
+ * UHD_FW_TRACE_FSTR(<log level>, <format string>, <args>)
+ *  - Trace format string with the log level as the prefix and \n at the end
+ *
+ * UHD_FW_TRACE_SHORT(<log level>, <message>)
+ *  - Simple trace. Print the messages without the log level prefix or \n at the end
+ *
+ * UHD_FW_TRACE_FSTR_SHORT(<log level>, <format string>, <args>)
+ *  - Trace format string without the log level prefix or \n at the end
+ */
+#ifdef UHD_FW_TRACE_LEVEL
+    #define UHD_FW_TRACE(lvl, fmt) \
+        if (UHD_FW_TRACE_LEVEL >= _trace_typecheck_conv(lvl)) UHD_FW_PRINTF(UHD_FW_BEAUTIFY_LVL(lvl) fmt "\r\n");
+    #define UHD_FW_TRACE_FSTR(lvl, fmt, ...) \
+        if (UHD_FW_TRACE_LEVEL >= _trace_typecheck_conv(lvl)) UHD_FW_PRINTF(UHD_FW_BEAUTIFY_LVL(lvl) fmt "\r\n", __VA_ARGS__);
+    #define UHD_FW_TRACE_SHORT(lvl, fmt) \
+        if (UHD_FW_TRACE_LEVEL >= _trace_typecheck_conv(lvl)) UHD_FW_PRINTF(fmt);
+    #define UHD_FW_TRACE_FSTR_SHORT(lvl, fmt, ...) \
+        if (UHD_FW_TRACE_LEVEL >= _trace_typecheck_conv(lvl)) UHD_FW_PRINTF(fmt, __VA_ARGS__);
+#else
+    #define UHD_FW_TRACE(lvl, fmt) ;
+    #define UHD_FW_TRACE_FSTR(lvl, fmt, ...) ;
+    #define UHD_FW_TRACE_SHORT(lvl, fmt) ;
+    #define UHD_FW_TRACE_FSTR_SHORT(lvl, fmt, ...) ;
+#endif
+
+#endif /* INCLUDED_TRACE_H */