Hi Olin,

I am sorry to say that i am not as all the bright men on this list.
How should i explain my problem anymore? Thats why they call it a problem.

Harry 

-----Oorspronkelijk bericht-----
Van: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] Namens Olin
Lathrop
Verzonden: maandag 11 augustus 2008 16:15
Aan: Microcontroller discussion list - Public.
Onderwerp: Re: [PIC] Packets problem to be solved

Harry H. Arends wrote:
> OK by now i am aware to be more specifik. The language is ASM.
> The data to be sendout is in four 8 bit variables:
> DATA0 contains all ones
> DATA1 contains a 8 bit address (AAAAAAAA)
> DATA2 contains a 8 bit command (DDDDDDDD)
> DATA3 contains a bitwise exclusif OR from the DATA1 and DATA2
>
> The result should become
> BYTE0 11110AAA
> BYTE1 AAAAA0DD
> BYTE2 DDDDDD0E
> BYTE3 EEEEEEE1
>
> So how can i do that in ASM

So your problem is really how to pack non-byte bit fields into bytes, and
talk of transmitting anything was just to add confusion?

I understand correctly, you are asking how to pack the following data fields
successively into bytes with the bytes being filled in MSB to LSB order:

  1111
  0
  a byte value (AAAAAAAA)
  0
  a byte value (DDDDDDDD)
  0
  a byte value (AAAAAAAA xor DDDDDDDD)
  1

This is simple to do, and I suspect you could easily do it if only you had
understood the problem to be as stated above in the first place.  If you
confirm this is indeed the problem, I can suggest some solutions if you
can't already do it yourself.  Note that none of this has anything to do
with "sending" anything.


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