[ECOS] Dropped characters

Laurie Gellatly laurie.gellatly@netic.com
Sat Jun 2 12:28:00 GMT 2007


An update.
I've found that by turning off FIFO the problem disappears.

Does anyone know of a FIFO problem with the LPC2212 and eCos?
More importantly, anyone know of a fix?

Thanks			...Laurie:{)

-----Original Message-----
From: ecos-discuss-owner@ecos.sourceware.org
[mailto:ecos-discuss-owner@ecos.sourceware.org]On Behalf Of Laurie
Gellatly
Sent: Friday, 1 June 2007 9:57 PM
To: Sergei Gavrikov
Cc: eCos Discussion
Subject: RE: [ECOS] Dropped characters


Hi Sergei,
We've ruled that out.
We tried a several character delay between each character on the transmit side
and still the characters are being dropped.

			...Laurie:{)


-----Original Message-----
From: Sergei Gavrikov [mailto:w3sg@SoftHome.net]
Sent: Friday, 1 June 2007 8:55 PM
To: Laurie Gellatly
Cc: eCos Discussion
Subject: Re: [ECOS] Dropped characters


В Птн, 01/06/2007 в 20:32 +1000, Laurie Gellatly пишет:
> Hi all,
> I'm having troubles with the UART on our 2212 board.
> Its running at 115200 (talking to a 2103) but although the characters are on
> the wire OK
> some are being dropped.
> My code checks for characters being available in eCos and when 'sufficient'
> have arrived
> they are emptied from eCos's buffer (which is MUCH larger).
> I have not been able to isolate any pattern as to why they are being
> dropped.
> Does this sound familiar to anyone?

When I did try up eCos PPP between PC and my target (LPC2294) using a
serial connection, I couldn't achive the desired results for 115,2K
baudrate. But when I turned on the XON/XOFF flow control for eCos serial
driver, that became to work just fine. Do you use any flow control on
your system?

-- Sergei

> 
> Thanks			...Laurie:{)
> 
> 


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