Hi all,
I'm sorry if this is a stupid question.
I want to control a circuit, which has 8 relè, and I want to switch them
on/off via software. Originally my idea was to control it using a parallel
port, but my laptop hasn't it. So, I'm trying to use an USB port with an USB
to Parallel converter. I can see the Device, and also I'm able to send some
data to the parallel port, but I don't know how to communicate efficently
with the Device. If I use dev.write(1, 'test', 0) or dev.write(1, '1', 0),
the result is the same: the 8 pins of my parallel port are set on the state
'00001000'.
The question is: is there a simple way to control the state of the 8 bits?
Thank you in advanced for any hint!
Best regards,
Emilio
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