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Message

Re: FLASH errata (bigining to hate LPC)

2004-11-18 by haack0815

Hi Gus,

I can't follow your problems

1. If the 1000 device are unmounted, return them to your disti and get
a replacement with the actual bootloader.  
Here in Germany I had the bootloader problem very early in june and
get help from Philips.
My disti Spoerle told me that they return all devices on stock back to
Philips for reprogramming.

2. If your devices are mounted on the PCB. Edit the bootloader hex
file and enter your clock freq. and you must not enter the value again
in the ISP tool for every single device.

3. Why you don't put your bootloader and your firmware in one hex file
for download and load both at the same time.

Why you don't write your own tool for your production line that do all
in one step?

Andreas


--- In lpc2000@yahoogroups.com, "Gus" <gus_is_working@y...> wrote:
> 
> but you pass the clock freq. to the IAP at run time!!! why on earth 
> philips wants you to program thier boot loader  then program your 
> boot loader then program your firmware!!!!!!!!! Can you imagine the 
> cost of doing this for 1000 chips?
> 
> My point is, this is done WRONG and Philips better fix it.
> 
> --- In lpc2000@yahoogroups.com, Robert Adsett <subscriptions@a...> 
> wrote:
> > At 10:23 PM 11/17/04 +0000, you wrote:
> > >Why is the oscillator frequency needed in the first place? Isn't 
> the
> > >interface baud rate detected by the bootloader?
> > 
> > Timing, They need to know the speed of the clock so they can 
> determine the 
> > timing for programming the flash.  IE 6 counts at 20Mhz and 12 
> counts at 
> > 10MHz in some internal timing loop.
> > 
> > The information has to come from somewhere.  The Analog Devices 
> chips don't 
> > need it (in a similar case) since they only allow a single Xtal 
> frequency.
> > 
> > Robert
> > 
> > " 'Freedom' has no meaning of itself.  There are always 
> restrictions,
> > be they legal, genetic, or physical.  If you don't believe me, try 
> to
> > chew a radio signal. "
> > 
> >                          Kelvin Throop, III

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