X-Git-Url: https://oss.titaniummirror.com/gitweb/?a=blobdiff_plain;f=tos%2Flib%2Fprintf%2FPrintfP.nc;h=0ea9b512861ef2d1d128494f97124f7c5d2457e9;hb=6db82e84ac9545d9337a3d54e5815c102b1816bb;hp=c9a99d4397fd2f84a4896ab25f7fdbec0f1d4bd9;hpb=7e8b2dc4c75215f91edd03b523c7b411b3744e17;p=tinyos-2.x.git

diff --git a/tos/lib/printf/PrintfP.nc b/tos/lib/printf/PrintfP.nc
index c9a99d43..0ea9b512 100644
--- a/tos/lib/printf/PrintfP.nc
+++ b/tos/lib/printf/PrintfP.nc
@@ -111,11 +111,13 @@ implementation {
   }
 
   event void SerialControl.startDone(error_t error) {
+    if (state == S_STOPPED) {
 #ifdef _H_atmega128hardware_H
-    stdout = &atm128_stdout;
+      stdout = &atm128_stdout;
 #endif
-    atomic state = S_STARTED;
-    signal Boot.booted();
+      atomic state = S_STARTED;
+      signal Boot.booted();
+    }
   }
 
   event void SerialControl.stopDone(error_t error) {