When enabled, this wil cause the instrument to insert a marker into
ftrace, while at the same time setting a GPIO pin high.
For this to work, GPIO sysfs interface must be be enabed in the kernel
and the specified pin must be exported.
- Now works with earlier versions of the DAQmx driver. This is needed to
be able to run the server on Linux systems, which support older
verisions of the driver only.
- DAQ error messages are now properly propaged to the client (PyDAQmx
uses "mess" rather than "message" attribute to store the message in
the Exception obejects).
- pylint and pep8 fixes
Some options in config_example.py are not reachable. It makes users
confused. So make the options in the file as gobal_alias.
Signed-off-by: zhizhou.zhang <zhizhou.zhang@spreadtrum.com>