At 06:14 PM 1/14/04 +0000, you wrote:
>Again, proof that this group is on the cutting edge of LPC2100
>development. ;-) The VPBDIV read problem is official, official
>philips description:
>
>The problem of read of VPBDIV register is confirmed: read of VPBDIV
>register may return a wrong value. The workaround is to read the
>VPBDIV register twice consecutively and the second read always
>returns the correct value. The write to VPBDIV, the function of
>VPBDIV and the other VPB/AHB registers are not affected.
I feel a lot better now :) Really I do. I hate setting something up as
"It seems to work", sooner or later the underlying problem will unmask
itself and reappear.
Now I can add a proper comment (and pointer to official documentation) so
that some poor benighted soul (me) doesn't 'optimize' the work around away.
Thanks for the update Richard.
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, IIIMessage
Re: [lpc2100] Re: VPB bad read behaviour
2004-01-14 by Robert Adsett
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