[prev in list] [next in list] [prev in thread] [next in thread] 

List:       uclinux-dev
Subject:    Re: [uClinux-dev] real high speed of serialport on 5272?
From:       Greg Ungerer <gerg () snapgear ! com>
Date:       2002-11-29 5:50:25
[Download RAW message or body]

Hi Zhanglei,

zhanglei wrote:
> I have found that the 5272C3 can not really support 921600b/s on its 
> serialport. It can transfer serval bytes in the speed of 921600 but more 
> data will lead it to death. The manual said that the serialport could 
> support speed above 1Mb/s.
> 
> Do I need some patch on mcfserial.c ?
> OS:uClinux2.0.39
> 
> Do you have the same experience ?

The problem is the mcfserial.c does not make any use of
the larger data FIFO's on the 5272 serial ports. You really
need to add code support for that to get good results at
the higher baud rates.

Regards
Greg



------------------------------------------------------------------------
Greg Ungerer  --  Chief Software Wizard        EMAIL:  gerg@snapgear.com
SnapGear Pty Ltd                               PHONE:    +61 7 3435 2888
825 Stanley St,                                  FAX:    +61 7 3891 3630
Woolloongabba, QLD, 4102, Australia              WEB:   www.SnapGear.com

_______________________________________________
uClinux-dev mailing list
uClinux-dev@uclinux.org
http://mailman.uclinux.org/mailman/listinfo/uclinux-dev
This message was resent by uclinux-dev@uclinux.org
[prev in list] [next in list] [prev in thread] [next in thread]