> What is the maximum baud rate one could reasonably expect to hammer at a
> LINUX/RTLinux serial port? Would 115200 baud be doable?
>
> Any experiences would be appreciated.
I have an rt-linux based airborne radar ( http://remote.sensing.org/sra )
which collects two channels of rs-232 ASCII data at the same time rt-linux
radar code is running. My rt-radar code contains interrupt code which
requires as much as 200 microseconds per interrupt with interrupts as
offten as every 700us. A burst of 64 interrupts is followed by a
500-1000us rtl "task" which processes the data collected by the
interrupts. While all this is going on, several X and Tcl/Tk display
programs are going on and the serial data is being ingested by the builtin
linux tty drivers.
There are occasional lost characters in the rs-232
data. The baud rate is 9600 on each, and there's no handshaking on one
channel and hard-hs on the other. Only the no-hs channels drops
characters. The system is a 200mhz pentium with an IDE drive and 64mb of
ram.
-W. Wright
-------------------------------------------------->-+
C.W. Wright,[EMAIL PROTECTED], Ph:757-824-1698
Fax: 757-824-1036,
NASA,Goddard Space Flight Center
Code 972, Wallops Flight Facility
Wallops Island, Va. 23337
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