Yahoo Groups archive

Lpc2000

Index last updated: 2026-04-28 23:31 UTC

Message

Re: Core id problem

2006-02-16 by arm7dude

Serdar,

Your jtag speed is set too fast. The segger driver 3.10d will help a
lot. You can also set the speed to fixed at 1000, assuming your CCLK
is 12mhz or better. These are set in the JLink selection in Options.

Hope this helps

--- In lpc2000@yahoogroups.com, Serdar Demirdag <SerdarDemirdag@...>
wrote:
>
> Hi everyone,
>    
>   I obtain the following message when i try to download the code
with J-Link;
>    
>   "Could not identify firmware(identification string has length of 0)"
>    
>   or 
>    
>   "Received 0xFFFFFFFF as core Id.
>   No communication with core"
>    
>   I checked all J-Link connections and LPC pins.
>    
>   I use;
>   MCU :  LPC2131
>   Comp:  IAR 4.30A
>    
>   I hope someone can help me.
>   Have a nice day,
>    
> 
> 		
> ---------------------------------
>  Yahoo! Autos. Looking for a sweet ride? Get pricing, reviews, &
more on new and used cars.
> 
> [Non-text portions of this message have been removed]
>

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.