Hi,
I have been trying to do some 2 way communication using the serial port,
and although I can get communications to run a lot faster than they did
under linux, there still seems to be a limit as to how fast I can switch
between read and write using rt_com. Under linux the latency was about
10ms, so I could only communicate at about 50Hz (send, 10ms switch,
receive, 10ms switch, ignoring the time for signal), using rt_com, I don't
seem to be able to beat 1kHz (thus about .5ms for switch and send, .5ms
switch and receive, making a bit over .25ms latency).
Is this normal? I would like to be able to communicate up to 2kHz ideally,
as this is closer to the theoretical baud rate limit (115200 baud) given
the amount of data I'm transmitting (1 byte send, 4 receive), but I
haven't been able to speed it up, despite playing around with the rt_com
code itself. Does anyone have any ideas?
Cheers,
Richard Reeve
University of Stirling
Stirling
UK
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