diff --git a/arch/platform/jn516x/dbg.c b/arch/platform/jn516x/dbg.c
new file mode 100644
index 000000000..ac6cc3888
--- /dev/null
+++ b/arch/platform/jn516x/dbg.c
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2014, SICS Swedish ICT.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+/*---------------------------------------------------------------------------*/
+#include "contiki.h"
+
+#include <MicroInt.h>
+#include "dev/uart0.h"
+/*---------------------------------------------------------------------------*/
+int
+dbg_putchar(int c)
+{
+  uart0_writeb(c);
+  return 1;
+}
+/*---------------------------------------------------------------------------*/
+unsigned int
+dbg_send_bytes(const unsigned char *s, unsigned int len)
+{
+  unsigned int i = 0;
+
+  while(s && *s != 0) {
+    if(i >= len) {
+      break;
+    }
+    uart0_writeb(*s++);
+    i++;
+  }
+  return i;
+}
+/*---------------------------------------------------------------------------*/
diff --git a/arch/platform/jn516x/slip.c b/arch/platform/jn516x/slip.c
index bdf3c81b5..173a14d60 100644
--- a/arch/platform/jn516x/slip.c
+++ b/arch/platform/jn516x/slip.c
@@ -429,9 +429,3 @@ slip_input_byte(unsigned char c)
   return error_return_code;
 }
 /*---------------------------------------------------------------------------*/
-int
-putchar(int c)
-{
-  uart0_writeb(c);
-  return 1;
-}