From: Ian Abbott <abbotti@mev.co.uk>
Date: Thu, 10 May 2012 12:49:57 +0000 (+0100)
Subject: demo/python/mmap.py: Fix buffer wraparound bug.
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=ac090c7bdfcaab4c741c5100a18d93b336694305;p=comedilib.git

demo/python/mmap.py: Fix buffer wraparound bug.

Fix bug reported by Ross Williamson where the code does not deal with
buffer wraparound within a chunk of data.
---

diff --git a/demo/python/mmap.py b/demo/python/mmap.py
index 65f9f82..07652ba 100755
--- a/demo/python/mmap.py
+++ b/demo/python/mmap.py
@@ -185,6 +185,8 @@ while flag:
 	map.seek(back%size)
 	for i in range(back,front,2):
 		DATA.fromstring(map.read(2))
+		if map.tell() == size:
+			map.seek(0)
 	DATA.tofile(of) # append data to log file
 ## 	time.sleep(.01)
 	ret = c.comedi_mark_buffer_read(dev, subdevice, front-back)