Hi, we're using a TS-7250 and have run into a problem with the built in serial
port (COM1
with the HDLC controller enabled).
If the serial port receives ANY data before it is initialized (i.e. before the
port is opened), the
RX refuses to work even after we have opened it (it just appears as if no data
is arriving at
all).
I've tried a couple of things such as manually clearing the FIFO before opening
the port, but it
doesn't seem to have any effect.
The only way to get the RX to work again is to power cycle the board and make
sure no data
arrives before opening the port.
Short of manually connecting/disconnecting the serial cable or adding something
to disable
the RX line until I'm ready to use it, is there anything else I might try to
fix this? I've looked
through the datasheet in hopes of finding some universal UART reset but
couldn't find
anything like this.
Thank you.
------------------------ Yahoo! Groups Sponsor --------------------~-->
Fair play? Video games influencing politics. Click and talk back!
http://us.click.yahoo.com/T8sf5C/tzNLAA/TtwFAA/CFFolB/TM
--------------------------------------------------------------------~->
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/ts-7000/
<*> To unsubscribe from this group, send an email to:
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
|