* [ECOS] My serial driver unable to read beyond 1200 bytes.
@ 2005-06-29 1:59 Ganapat Rao P Kulkarni
2005-06-29 10:01 ` Andrew Lunn
0 siblings, 1 reply; 2+ messages in thread
From: Ganapat Rao P Kulkarni @ 2005-06-29 1:59 UTC (permalink / raw)
To: ecos-discuss
Hi all,
I am working on developing eCos based bootloader for s3c2410 (arm920
core) based board, and have customized a serial driver (RS232) to
receive/transmit from/to the PC. I have configured UART1(FIFO mode)
for my driver. I have set a default buffer value to 8192. (this I have
done by editing the corresponding cdl file). Also the read mode is set
to non blocking read.
Now when I tried to read using cyg_io_read, it reads only 1000 and odd
bytes even though I am requesting to read around 2000 bytes. However
from PC side I am transmitting 2000 bytes.
Could anybody suggest what may be going wrong.
Do I need to initialize something more ??
Thanks in Advance
Ganapat
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [ECOS] My serial driver unable to read beyond 1200 bytes.
2005-06-29 1:59 [ECOS] My serial driver unable to read beyond 1200 bytes Ganapat Rao P Kulkarni
@ 2005-06-29 10:01 ` Andrew Lunn
0 siblings, 0 replies; 2+ messages in thread
From: Andrew Lunn @ 2005-06-29 10:01 UTC (permalink / raw)
To: Ganapat Rao P Kulkarni; +Cc: ecos-discuss
On Wed, Jun 29, 2005 at 07:29:34AM +0530, Ganapat Rao P Kulkarni wrote:
> Hi all,
> I am working on developing eCos based bootloader for s3c2410 (arm920
> core) based board, and have customized a serial driver (RS232) to
> receive/transmit from/to the PC. I have configured UART1(FIFO mode)
> for my driver. I have set a default buffer value to 8192. (this I have
> done by editing the corresponding cdl file). Also the read mode is set
> to non blocking read.
>
> Now when I tried to read using cyg_io_read, it reads only 1000 and odd
> bytes even though I am requesting to read around 2000 bytes. However
> from PC side I am transmitting 2000 bytes.
If you make another read do you get the rest of the data?
Andrew
--
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss
^ permalink raw reply [flat|nested] 2+ messages in thread
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2005-06-29 1:59 [ECOS] My serial driver unable to read beyond 1200 bytes Ganapat Rao P Kulkarni
2005-06-29 10:01 ` Andrew Lunn
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