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RE: How to increase download speed for UART

To: Steffen Malmgaard Mortensen <smm@futarque.com>
Subject: RE: How to increase download speed for UART
From: Adeel Malik <AdeelM@avaznet.com>
Date: Mon, 29 Sep 2003 12:41:02 +0500
Cc: linux-mips@linux-mips.org
Original-recipient: rfc822;linux-mips@linux-mips.org
Sender: linux-mips-bounce@linux-mips.org
Hi,
    The terminal emulator that you specified supports the max. baud rate of
115.2 kbps. And it is taking about 7 minutes to download the Kernel Image of
4.3 MB. Do you know some other Terminal Emulator that can support a higher
baud rate ?.

The UART of the target processor supports the max. baud rate of 406 kbps. So
I can use the terminal emulator that supports for example, 406kbps, then my
download time may be further reduced.

Regards,

ADEEL MALIK,


-----Original Message-----
From: linux-mips-bounce@linux-mips.org
[mailto:linux-mips-bounce@linux-mips.org]On Behalf Of Steffen Malmgaard
Mortensen
Sent: Monday, September 29, 2003 11:14 AM
To: linux-mips@linux-mips.org
Subject: RE: How to increase download speed for UART


Hi
I have experienced the same problem with HyperTerminal on Win2000. There
are a number of freeware terminal emulators for Win2000 (eg.
http://home.planet.nl/~ruurdb/IVT.HTM), so you could try one of those if
you can't use linux.
Good luck
/Steffen

On Fri, 2003-09-26 at 20:13, Mitchell, Earl wrote:
> You can also get a probe with
> ethernet support and do it that
> way. 
> 
> -earlm
> 
> -----Original Message-----
> From: Mitchell, Earl [mailto:earlm@mips.com]
> Sent: Friday, September 26, 2003 11:04 AM
> To: 'Pete Popov'; Adeel Malik
> Cc: linux-mips@linux-mips.org
> Subject: RE: How to increase download speed for UART
> 
> 
> 
> YAMON only prints '.' feedback for 
> ethernet download, unless you modified it.
> Download a copy of TeraTerm and use that
> instead of Hyperterminal. Then you can use
> the "Send File" command under File pulldown.
> This gives you feedback showing how many
> bytes have been transferred. 
> 
> I was able to load a 6.4MB linux srec
> image in 27 minutes on my Malta 4Kc board
> with baud rate set to 38.4K. Using TFTP 
> over ethernet it takes 17 seconds. Another
> alternative is to consider buying an EJTAG probe 
> and loading thru that. The probes will probably load
> something this size within 1-4 minutes. This
> is assuming you have EJTAG interface available.
> But I wouldn't buy a probe just to download
> code. ;-) 
> 
> -earlm
> 
> -----Original Message-----
> From: Pete Popov [mailto:ppopov@mvista.com]
> Sent: Friday, September 26, 2003 9:09 AM
> To: Adeel Malik
> Cc: linux-mips@linux-mips.org
> Subject: RE: How to increase download speed for UART
> 
> 
> On Fri, 2003-09-26 at 08:41, Adeel Malik wrote:
> > Yes this is an Motorola's S-Record File. Do you think that I am missing
> > something?. I am using YAMON to configure the UART's settings on the
board
> > and HyperTerminal on the Host the transfer this file.
> 
> Yes, I think there's something definitely wrong. I wonder if the
> download is even in progress... You're using windows and hyperterm? Try
> it on linux but just doing "cat <srec file name>  > /dev/ttyS0",
> assuming you're using the first serial port to connect to the target.
> Yamon gives you feedback of the download progress by printing dots, when
> downloading over ethernet. I imagine it does the same when downloading
> over serial port, so if you are not seeing any progress feedback, then
> perhaps that's another indication that your download is not working.
> 
> Pete
> 
> > ADEEL 
> > 
> > 
> > -----Original Message-----
> > From: Pete Popov [mailto:ppopov@mvista.com]
> > Sent: Friday, September 26, 2003 8:45 PM
> > To: Adeel Malik
> > Cc: linux-mips@linux-mips.org
> > Subject: Re: How to increase download speed for UART
> > 
> > 
> > On Fri, 2003-09-26 at 08:32, Adeel Malik wrote:
> > > Hi All,
> > >          I am porting Linux to a MIPS based development platform. The
> > > UART on the board provides a maximum baud rate of 115 kbps. But the
> > > download time for the kernel Image of about 4.3 MB is about 4 hours
> > > !!!!!. 
> > 
> > 4.3MB? Is this an SREC file? I've downloaded images over the serial port
> > (srec files) and it takes no more than 10 minutes.
> > 
> > Pete
> > 
> > > Can someone help me address this problem ?. 
> > >  
> > > (I can't download the kernel image via tftp server using ethernet, as
> > > the CPU doesn't have the MAC interface).
> > >  
> > > Regards,
> > > ADEEL MALIK,
> > >  
> > > 
> > 
> > 
> 
> 



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