From: liang_mike <liang_mike>
Date: Wed, 9 Jul 2008 05:16:16 +0000 (+0000)
Subject: Make sure that Printf was the one that started serial before running the code inside... 
X-Git-Tag: release_tinyos_2_1_0_0~100
X-Git-Url: https://oss.titaniummirror.com/gitweb/?p=tinyos-2.x.git;a=commitdiff_plain;h=6db82e84ac9545d9337a3d54e5815c102b1816bb

Make sure that Printf was the one that started serial before running the code inside SerialControl.startDone
---

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) {