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Entering ISP mode from user code?

Entering ISP mode from user code?

2006-03-17 by Mukadder CEYHAN

as explained in AN10356 and here:
http://www.compuphase.com/lpc2100_isp.htm

for entering from user code to bootloader mode.

But after entering the user code what should be done?

The "LPC2000 Flash Utility" program from philips does
not  give any response when entered isp mode from my
code in LPC2138.

What am I missing? If so, what is the correct
provedure?

thanks..

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Re: [lpc2000] Entering ISP mode from user code?

2006-03-17 by K B Shah-lascaux

May be you need to look at PLL settings and processor speed ...
The Bootloader assumes certain speed of core for communication correctly with UART, you you change this by enabling pll  you  will fail to communicate.
.
kb 
Show quoted textHide quoted text
  ----- Original Message ----- 
  From: Mukadder CEYHAN 
  To: lpc2000@yahoogroups.com 
  Sent: Friday, March 17, 2006 8:34 AM
  Subject: [lpc2000] Entering ISP mode from user code?


  as explained in AN10356 and here:
  http://www.compuphase.com/lpc2100_isp.htm

  for entering from user code to bootloader mode.

  But after entering the user code what should be done?

  The "LPC2000 Flash Utility" program from philips does
  not  give any response when entered isp mode from my
  code in LPC2138.

  What am I missing? If so, what is the correct
  provedure?

  thanks..

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Re: [lpc2000] Entering ISP mode from user code?

2006-03-17 by Mukadder CEYHAN

this is not applicable solution, because the isp mode
requires no pll activated, it runs only with crystal
above 10 MHz.To enter isp mode pll must be deactivated
if it is actively running.
I do not know the erros but searching for the
solution...

--- K B Shah-lascaux <kbshah@...> wrote:

> May be you need to look at PLL settings and
> processor speed ...
> The Bootloader assumes certain speed of core for
> communication correctly with UART, you you change
> this by enabling pll  you  will fail to communicate.
> .
> kb 
> 
>   ----- Original Message ----- 
>   From: Mukadder CEYHAN 
>   To: lpc2000@yahoogroups.com 
>   Sent: Friday, March 17, 2006 8:34 AM
>   Subject: [lpc2000] Entering ISP mode from user
> code?
> 
> 
>   as explained in AN10356 and here:
>   http://www.compuphase.com/lpc2100_isp.htm
> 
>   for entering from user code to bootloader mode.
> 
>   But after entering the user code what should be
> done?
> 
>   The "LPC2000 Flash Utility" program from philips
> does
>   not  give any response when entered isp mode from
> my
>   code in LPC2138.
> 
>   What am I missing? If so, what is the correct
>   provedure?
> 
>   thanks..
> 
>   __________________________________________________
>   Do You Yahoo!?
>   Tired of spam?  Yahoo! Mail has the best spam
> protection around 
>   http://mail.yahoo.com 
> 
> 
>   SPONSORED LINKS Microcontrollers  Microprocessor 
> Intel microprocessors  
>         Pic microcontrollers  
> 
> 
>
------------------------------------------------------------------------------
>   YAHOO! GROUPS LINKS 
> 
>     a..  Visit your group "lpc2000" on the web.
>       
>     b..  To unsubscribe from this group, send an
> email to:
>      lpc2000-unsubscribe@yahoogroups.com
>       
>     c..  Your use of Yahoo! Groups is subject to the
> Yahoo! Terms of Service. 
> 
> 
>
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> 
> 
> 
> 
>
------------------------------------------------------------------------------
> 
> 
>   No virus found in this incoming message.
>   Checked by AVG Free Edition.
>   Version: 7.1.385 / Virus Database: 268.2.4/283 -
> Release Date: 16/03/2006
> 
> 
> [Non-text portions of this message have been
> removed]
> 
> 


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