Hendrik van Rooyen schrieb:
In the past, on this group, I have made statements that said that on Linux,
the serial port handling somehow does not allow transmitting and receiving at
the same time, and nobody contradicted me.
I am running into the self same issue again.
What I normally do is to open the port like this:
port = open("/dev/ttyS0","r+b",0)
How about using pyserial? With that, I never had any problems accessing
the the serial ports, and AFAIK no duplex-problems as well. And I
seriously doubt that these are a python-related problem - python only
has a very thin, direct layer above the posix-calls, and doesn't do
anything that would explain your observed behavior. The GIL is not the
issue here either - it won't interfer with blocking IO.
Diez
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