[Bug pyserial:146] flush() does nothing in windows (despite docs)

git-svn-id: http://svn.code.sf.net/p/pyserial/code/trunk/pyserial@456 f19166aa-fa4f-0410-85c2-fa1106f25c8a

1 files changed, 8 insertions, 0 deletions

diff --git a/serial/serialwin32.py b/serial/serialwin32.py
index 3802d4b..4df8041 100644
--- a/serial/serialwin32.py
+++ b/serial/serialwin32.py
@@ -273,6 +273,14 @@ class Win32Serial(SerialBase):
         else:
             return 0
 
+    def flush(self):
+        """Flush of file like objects. In this case, wait until all data
+           is written."""
+        while self.outWaiting():
+            time.sleep(0.05)
+        # XXX could also use WaitCommEvent with mask EV_TXEMPTY, but it would
+        # require overlapped IO and its also only possible to set a single mask
+        # on the port---
 
     def flushInput(self):
         """Clear input buffer, discarding all that is in the buffer."""