termios with high baud rate...

[Brett Swimley]

I had an error with my reply as well (similar to Charles).
Note Charles' response is similar to mine.

Brett


Brett Swimley wrote:

> Are you sure that you're not running into a receive buffer overrun?
>
> I was working with some early versions of termios about a year ago 
> with the 5272, and decided to abandon it for more streamlined serial 
> port interrupt drivers because the overhead of the termios hooks 
> _appeared_ to cause me to not be able to read subsequent characters 
> from the Rx FIFO fast enough.  IIRC, the  5206e only has up to a 4 
> byte Rx FIFO.
>
> Worth looking into??
>
> Brett Swimley
>
> Stan wrote:
>
>>----- Original Message ----- 
>>From: "Charles Steaderman" <charlies at poliac.com>
>>To: "Stan" <zylog at club-internet.fr>
>>Cc: "rtems-users" <rtems-users at rtems.com>
>>Sent: Thursday, January 15, 2004 9:30 PM
>>Subject: Re: termios with high baud rate...
>>
>>
>>  
>>
>>>I have a custom 5206e board working with 60096 baud with interrupt based 
>>>termios, although the data from the sending device is not entirely 
>>>continuous. I will see if I can find a way to quickly modify my 
>>>application to test at 115200. How are you sending a continuous stream? 
>>>    
>>>
>>
>>I send a text file with one terminal (PC).
>>
>>
>>  
>>
>>>I am sure that hardware handshaking will be necessary. Is that OK for 
>>>your application?
>>>
>>>- Charlie
>>>    
>>>
>>
>>My application is a simple buffer.
>>It must to work without hardware handshaking ( at least at 57600 ).
>>The 5206e ColdFire is fast ( 50 Mhz ),  it should be fast enough
>>for do it.
>>
>>Stan.
>>
>>
>>
>>  
>>
>
>-- 
>Brett Swimley
>Advanced Electronic Designs
>brett.swimley at aedbozeman.com
>ph: 406-585-8892 fax: 406-585-8893
>  
>

-- 
Brett Swimley
Advanced Electronic Designs
brett.swimley at aedbozeman.com
ph: 406-585-8892 fax: 406-585-8893