Allow PRINTF_MSG_LENGTH to be overwritten by users.

diff --git a/tos/lib/printf/printf.h b/tos/lib/printf/printf.h
index a8cf26193433754283cf7f119539145d76e5e1ff..605162c91dc62ebd26a29a8fa1b78a5ae4a407e3 100644 (file)
--- a/tos/lib/printf/printf.h
+++ b/tos/lib/printf/printf.h
@@ -51,7 +51,9 @@
 #include "message.h"
 int printfflush();
 
+#ifndef PRINTF_MSG_LENGTH
 #define PRINTF_MSG_LENGTH      28
+#endif
 typedef nx_struct printf_msg {
   nx_uint8_t buffer[PRINTF_MSG_LENGTH];
 } printf_msg_t;