Problems w/ serial flow control

Philip Prindeville philipp_subx at redfish-solutions.com
Wed May 31 18:14:41 UTC 2006


Tim wrote:
> On Tue, 2006-05-30 at 21:25 -0600, Philip Prindeville wrote:
>   
>> I'm running FC3 on an MSI-7142 (K8MM-V motherboard), and using
>> the two serial ports on the m/b.  I used the stock
>> out-of-the-shrinkwrap settings for most hardware (except for the sound
>> board and X drivers), and things have worked fine.
>>
>> But... when connecting to a router's console at 115200 with either
>> RTS/CTS or XON/XOFF flow control, I'm seeing dropped characters.
>>     
>
> Looking at a friend's router, his one's serial port connection *ONLY*
> had the three-wire type of serial connection.  So his couldn't possibly
> use hardware handshaking (RTS/CTS).  Perhaps yours can't too?
>
> Also, check what your router says about its maximum port speeds and
> handshaking protocols.
>
>   

It is an 8-wire connection (over RJ-45 to DB-9), and can do 115200 (max 
rate)
with either XON/XOFF or RTS/CTS.

I've tried both, and they're both lossy.

The issue is on the PC as the receiver...

-Philip




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