[ECOS] download problem to i386 pc

[ECOS] download problem to i386 pc

[danish iftikhar]

Hi,

i have built ecos for i386 pc target . i tried to download the prebuilt test 
case ( thread_gdb) through the serial connection from Linux to the i386 kit 
booted from floppy according to the documentation.
it established the connection & started downloading but it took an hour to 
download this program ( extremely slow) , though the baud rate has been set 
at 38400 . moreever during the download it continuously gave this message at 
the gdb prompt :

ignoring package error , continuing ....

and finally said done.
But when i did "continue " , the same error message came & nothing happened 
.

can anyone tell me , what is happening ?
how do i increase the data transfer rate ?

regards
danish.
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Re: [ECOS] download problem to i386 pc

[Alex Mathews]

The error you're receiving leads me to believe one of the following:

1. You don't have the serial port enabled in the bios on one or both
your machines.
2. You're using the wrong serial port compared to what you told gdb.  I
use /dev/ttyS0 for com1 when connecting to my target.
3. You don't have permission to write to that device on your host
machine.

-Alex

danish iftikhar wrote:
> 
> Hi,
> 
> i have built ecos for i386 pc target . i tried to download the prebuilt test
> case ( thread_gdb) through the serial connection from Linux to the i386 kit
> booted from floppy according to the documentation.
> it established the connection & started downloading but it took an hour to
> download this program ( extremely slow) , though the baud rate has been set
> at 38400 . moreever during the download it continuously gave this message at
> the gdb prompt :
> 
> ignoring package error , continuing ....
> 
> and finally said done.
> But when i did "continue " , the same error message came & nothing happened
> .
> 
> can anyone tell me , what is happening ?
> how do i increase the data transfer rate ?
> 
> regards
> danish.
> _________________________________________________________________________
> Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com .
> 
> Share information about yourself, create your own public profile at
> http://profiles.msn.com .

-- 
Alex Mathews
CrosStor Software, Inc.
908-226-0100 ext 148
alexma@crosstor.com

Re: [ECOS] download problem to i386 pc

[Jonathan Larmour]

danish iftikhar wrote:
> 
> i have built ecos for i386 pc target . i tried to download the prebuilt test
> case ( thread_gdb) through the serial connection from Linux to the i386 kit
> booted from floppy according to the documentation.
> it established the connection & started downloading but it took an hour to
> download this program ( extremely slow) , though the baud rate has been set
> at 38400 . moreever during the download it continuously gave this message at
> the gdb prompt :
> 
> ignoring package error , continuing ....
> 
> and finally said done.
> But when i did "continue " , the same error message came & nothing happened

Getting packet (not package :-)) errors is normally fatal - it means your
downloaded program will have been corrupted.

Check the connections of your serial cable - does it work for other things?
For example, on the linux box, do:

cu -s 38400 -l /dev/ttyS0

or use "minicom" and type return a few times. You should see packets from
the remote GDB stub every time you do it, like:

$T0508:.....#ab

or similar.

Look at the PC target's screen - you should see the serial traffic being
displayed. If you don't, then it hasn't even got as far as that.

Jifl
-- 
Red Hat, 35 Cambridge Place, Cambridge, UK. CB2 1NS  Tel: +44 (1223) 728762
"Plan to be spontaneous tomorrow."  ||  These opinions are all my own fault