allow setRTS, setDTR before opening on Win32 (to set initial state), doc update

git-svn-id: http://svn.code.sf.net/p/pyserial/code/trunk/pyserial@445 f19166aa-fa4f-0410-85c2-fa1106f25c8a

2 files changed, 23 insertions, 10 deletions

diff --git a/CHANGES.txt b/CHANGES.txt
index cbce157..92995cb 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -436,11 +436,15 @@ Bugfixes (win32):
 
 Version 2.7      2012-nn-nn
 ---------------------------
+- Win32: setRTS and setDTR can be called before the port is opened and it will
+  set the initial state on port open.
+- Posix: add platform specific method: outWaiting (already pesent for Win32)
+- Posix: rename flowControl to setXON to match name on Win32, add
+  flowControlOut function
 
 Bugfixes (posix):
 
 - [Patch 3462364] Fix: NameError: global name 'base' is not defined
-- add platform specific method: outWaiting
 
 Bugfixes (win32):
 
diff --git a/serial/serialwin32.py b/serial/serialwin32.py
index 9a62fa0..3802d4b 100644
--- a/serial/serialwin32.py
+++ b/serial/serialwin32.py
@@ -28,6 +28,10 @@ class Win32Serial(SerialBase):
     def __init__(self, *args, **kwargs):
         self.hComPort = None
         self._rtsToggle = False
+
+        self._rtsState = win32.RTS_CONTROL_ENABLE
+        self._dtrState = win32.DTR_CONTROL_ENABLE
+
         SerialBase.__init__(self, *args, **kwargs)
 
     def open(self):
@@ -65,9 +69,6 @@ class Win32Serial(SerialBase):
         self._orgTimeouts = win32.COMMTIMEOUTS()
         win32.GetCommTimeouts(self.hComPort, ctypes.byref(self._orgTimeouts))
 
-        self._rtsState = win32.RTS_CONTROL_ENABLE
-        self._dtrState = win32.DTR_CONTROL_ENABLE
-
         self._reconfigurePort()
 
         # Clear buffers:
@@ -302,23 +303,31 @@ class Win32Serial(SerialBase):
 
     def setRTS(self, level=1):
         """Set terminal status line: Request To Send"""
-        if not self.hComPort: raise portNotOpenError
+        # remember level for reconfigure
         if level:
             self._rtsState = win32.RTS_CONTROL_ENABLE
-            win32.EscapeCommFunction(self.hComPort, win32.SETRTS)
         else:
             self._rtsState = win32.RTS_CONTROL_DISABLE
-            win32.EscapeCommFunction(self.hComPort, win32.CLRRTS)
+        # also apply now if port is open
+        if self.hComPort:
+            if level:
+                win32.EscapeCommFunction(self.hComPort, win32.SETRTS)
+            else:
+                win32.EscapeCommFunction(self.hComPort, win32.CLRRTS)
 
     def setDTR(self, level=1):
         """Set terminal status line: Data Terminal Ready"""
-        if not self.hComPort: raise portNotOpenError
+        # remember level for reconfigure
         if level:
             self._dtrState = win32.DTR_CONTROL_ENABLE
-            win32.EscapeCommFunction(self.hComPort, win32.SETDTR)
         else:
             self._dtrState = win32.DTR_CONTROL_DISABLE
-            win32.EscapeCommFunction(self.hComPort, win32.CLRDTR)
+        # also apply now if port is open
+        if self.hComPort:
+            if level:
+                win32.EscapeCommFunction(self.hComPort, win32.SETDTR)
+            else:
+                win32.EscapeCommFunction(self.hComPort, win32.CLRDTR)
 
     def _GetCommModemStatus(self):
         stat = win32.DWORD()