Ok but.. If I must not use baud rate syncronised message...
( Well.. I never had so much trouble tring to make miself clear.. Im French)
Ok I, myself, have some problem understanding what the electronic technician
tryed to explain to me... but here is what I must do...
I mean I must listen on the serial for a delay of 25 millisecond between
2 signal, this tell me that Im on the beginning to the message.
After the 25ms I should be syncronised, so now I can send break signal
to the device to override it's own signal...
exemple
_______ ____ ____ _____ ___
|____| |____| |____| |____|
25 ms 32ms
<------><------------------------------------------->
^
|--- I should be able to override this signal ( that
send it up )
to let it down...
_______ ____ _____ ___
|____________| |____| |____|
Like this....
If you don't understand what I mean... I don't know what I'll do... ;-)
So... I must be able to send a bit on the serial so that the device know
that it's signal ( on the bus.. the drawing is the bus signal ) has changed
so that it (device) change a state of a bit in ist registry....
( I have a device I want to control using the Palm serial....
It's protocol ( the device ) is built that way...
The meaning of all this is to use the Palm to control a
numpad we designed using serial port, but without UART or parity...
This is no usual serial communication....
I hope someone out there understand...
( If someone is french.. I can explain it better in french )
--
Patrick Ouellet, Programmeur/Analyste
Département: Recherche & Développement
Les Entreprises Microtec Inc.
4780 rue St-Félix, St-Augustin, Qc, G3A-2J9
(418) 864-7644 poste 130
[EMAIL PROTECTED]
http://www.microtecsecurite.com/
--
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