Also being investigated. Actually, I prefer the idea of switching our fieldbus
to ARCnet - which can handle IP traffic as well as the low-level stuff. You can
get a chip with an 8051 core and an ARCnet core next to each other, which is
quite nice.
> Ok, you can't use your $10 standard PCI serial hardware, but at least
> any user could be assured that the right lamp / engine / magnet is
> turned on or off.
I fully intend to support 'decent' fast serial ports, running RS485 up to
1.5Mbaud, but I may have to build such boards myself - and if I want
widespread testing of my Profibus code, there's no substitute for commodity
hardware.
> If this protocol is only really reliable in hardware, why not
> implement it in hardware.
It's not that it's not reliable in software - it's just that we might not be
able to pass the certification in software - that's a different thing.
With a little care (and hdparm -u) we can get it to be _reliable_ without too
much trouble - this is Linux, after all.
---- ---- ----
David Woodhouse David.Woodhouse@mvhi.com Office: (+44) 1223 810302
Project Leader, Process Information Systems Mobile: (+44) 7976 658355
Axiom (Cambridge) Ltd., Swaffham Bulbeck, Cambridge, CB5 0NA, UK.
finger dwmw2@ferret.lmh.ox.ac.uk for PGP key.
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