Lpc2000

From: redsp@... [mailto:redsp@...] 
Sent: 22 February 2004 06:14
To: lpc2000@yahoogroups.com
Subject: [lpc2000] Re: Code Protection



--- In lpc2000@yahoogroups.com, "Hugh O'Keeffe" <hugh.okeeffe@a...>
wrote:
> 64-pin/128-pin LPC2000 devices with a Boot Loader ID >= 1.6 have flash
> Read Protection. Ashling users can can check your device's ID using
> FlashLPC (I think the Philips ISP programmer supports this as well).
> Code read protection is enabled by programming the flash address
> location 0x1FC (User flash sector 0) with value 0x87654321. If Read
> Protection is enabled then the device has to be fully erased (thus
> disabling Read Protection) before it can be re-programmed. We're
> currently adding support for this in our tools; further announcements
> shortly. 
>  
> BTW, use this information at your own risk. Philips Applications will
be
> making "official" announcements shortly.

If I understand how this will work, field upgrades will be impossible?
It seems very risky to me to blow away a working version of a program
before loading new code into a system in the field.  Even then this
will require a user to know enough about the tools to upload the new
software.  I have not heard how this is done.  Is there a serial port
programming utility like OKI has in the Boot ROM?   
 
 
The complete flash must be erased before reprogramming. There are serial
port programming utilities. Ashling FlashLPC or Philips ISP.



Hugh @ http://www.ashling.com/support/lpc2100/ 

 





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