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Hi Michael,
In lugnet.robotics.handyboard, Michael Lim writes:
> Hi
>
> In regards with programming the serial port to talk to a mouse, if i only
> want to use the existing baud rate and settings to talk to a modem, can it
> be done?
It's not that hard you are thinking !
check out this document and you'll see it's not that hard !
http://ebus.motorola.com/brdata/PDFDB/MICROCONTROLLERS/8-BIT/68HC11_FAMILY/DATA
BOOK/M68HC11E.pdf
> Do I still need to reprogram the HC11 chip? I only need 9600,n,8,1 settings
> which i assume is the current configuration on the handyboard.
Depends on what handshake you're using.
> Is there any other things that I need to change?
I don't know how this works at handyboard, but i've managed to get this running
with the previous board (6.270 with an ATMEL microcontroller).
Both board are using the 68HC11 so i guess it must be the same.
What you've got to do is switch the 68HC11 from bootstrap mode.
I've got some functions written by FRED MARTIN here, we have used.
I can't remember were i found them. The file is called serialio.c.
If you can't find it in web i'll send it per e-mail.
what you've got to do is:
disable bootstrap mode (pcode mode)
poke (0x3C,0);
enable bootstrap mode (pcode mode)
poke (0x3C,1);
Oh I actually read that this file is for HANDY board and does also work with
6.270. So that should be the right thing for you.
> I have already crossed the RD and TD signals and also generated a +5V on the
> DTR. What other pins must I "twigged"?
Depends again on what handshake you're using.
> PS: I am only a software programmer, not an electronic guru. Please explain
> in simple terms. Thanks.
What' that ?? An Excuse ?? ;-)
Try it !!!!!!!!!!!!
Rainer
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Message is in Reply To:
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| Hi In regards with programming the serial port to talk to a mouse, if i only want to use the existing baud rate and settings to talk to a modem, can it be done? Do I still need to reprogram the HC11 chip? I only need 9600,n,8,1 settings which i (...) (24 years ago, 9-Nov-00, to lugnet.robotics.handyboard)
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