> I've tried  "xwisp.py PORT /dev/ttyUSB0", but that only produced a
runtime error.

Eaxctly which runtime error? There have been versions of XWisp that
insisted on changing the port name to uppercase. You could check this by
making a softlink to the /dev.. with an all-uppercase name.

Wouter van Ooijen

-- -------------------------------------------
Van Ooijen Technische Informatica: www.voti.nl
consultancy, development, PICmicro products

--
http://www.piclist.com hint: The list server can filter out subtopics
(like ads or off topics) for you. See http://www.piclist.com/#topics