On Mon, Sep 29, 2014 at 12:58:09PM +0100, Alan Gauld wrote:
[...]
> How do you know that val is not a blank line?
> Remember that a blank line is not necessarily empty, it might be full of
> unprintable characters.
>
> Try this instead:
>
> while True:
> print "try"
> val = ser.read(10)
> print 'len: ', len(val)
> for char in val:
> print ord(char)
Another way to see invisible control characters is:
print repr(val)
--
Steven
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