Re: 555 BDM startup problem

Hi Peter,

The cable was a good thought, but we built a second cable, and that 
exhibits the same problem...weird.

--- In [email protected], Peter Woolley <veidtdan@y...> wrote:
>
> I'm sure that you have already done this, but have you
> checked the cable attached to the BDM port?
> 
> I had a problem one time with erratic BDM connection
> only to find that my cable was the problem.
> 
> Peter.
> 
> --- Chuck Smith <chucksoft@a...> wrote:
> 
> 
> ---------------------------------
> Thanks Randall for the good suggestion. Unfortunately
> that didn't 
> work any better. I was able to quantify the problem a
> bit more 
> though...I can get a debug session to work if I leave
> the target 
> power off for at least 10 minutes. Also, I was able to
> program a 
> simple LED flashing program into the internal flash,
> and it works 
> every time no matter how short the power cycle is, so
> this is 
> limited to a BDM problem.
> 
> Chuck Smith
> Stara Technologies, Inc.
> 
> 
> --- In [email protected], "Randall Young"
> <ryoung@n...> wrote:
> >
> > 
> > 
> > > Every morning I power up the Abatron BDM pod,
> > > then the 555 board,
> > 
> > Chuck, this may have absolutely nothing to do with
> your problem.  
> But ISTR
> > reading several years ago that it's important to
> power up the 
> processor
> > first.  Apparently the BDM pod can put enough power
> into the 
> processor
> > through the signal lines to confuse it.
> > 
> > Anyway, it's easy enough to try.
> > 
> > Randall Young
> > Senior Software Engineer
> > NavCom Technology, Inc.
> > A John Deere Company
> > 
> 
> 
> 
> 
> 
> 
> -----------------------------------------------------------
> To learn more about Freescale Microcontrollers, please
> visit
> http://www.freescale.com/mcu
> 
> 
> 
> 
>       
> 
>       SPONSORED LINKS  
>                                                
> Freescale semiconductor inc                           
>         Microcontrollers                              
>      Pic microcontrollers                             
>                                   8051 microprocessor 
>                                      
>     
> ---------------------------------
>   YAHOO! GROUPS LINKS
> 
>   
>     Visit your group "MPC500" on the web.
>    
>     To unsubscribe from this group, send an email to:
>  [email protected]
>    
>     Your use of Yahoo! Groups is subject to the Yahoo!
> Terms of Service.
> 
>   
> ---------------------------------
> 
> 
> 
> 
> 
> 		
> ___________________________________________________________ 
> To help you stay safe and secure online, we've developed the all 
new Yahoo! Security Centre. http://uk.security.yahoo.com
>






------------------------ Yahoo! Groups Sponsor --------------------~--> 
Get fast access to your favorite Yahoo! Groups. Make Yahoo! your home page
http://us.click.yahoo.com/dpRU5A/wUILAA/yQLSAA/dN_tlB/TM
--------------------------------------------------------------------~-> 

-----------------------------------------------------------
To learn more about Freescale Microcontrollers, please visit
http://www.freescale.com/mcu


 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/MPC500/

<*> To unsubscribe from this group, send an email to:
    [email protected]

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/