Re: TI-H: PIC's and TI-89's
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Re: TI-H: PIC's and TI-89's
hey wesley
nice to see some other people are working on the same project. i am also
attempting to create a pic interface with a ti-89/ti92p. same with javier.
i motion to combine our efforts and get this project over with.
here's what we know:
1. sami k. wrote an interface program with a pic16f84 for an ir remote.
- did not use ti's link protocals
- released the source for the calc, not the pic
2. bryan rittmeyer wrote an interface program with an amd micro for an e2
- used ti's link portocals
- released the cource for the calc, not the micro
let's figure this important project out, and release the source for the pic.
it's the way it should be. everything with calculators _should_ be open source.
i have a lot of experience with mpasm, but i'm still learning the ins and outs
of 68k. i've written a small test program for my ti92p (using the link routines
from rittmeyer's setup) and duplicating the hardware found on his web page.
(there's a link at ticalc.org) the pic source, of course, is anyone's guess.
i've written a program for the pic but i'm still trying to work the bugs out
email me back (nmpalko@kscable.com) off the list if you're interested in
develping this thing (sharing files, ect) and ultimately releasing a bug-free
version of _both_ sources for the public.
nick
Wesley Moore wrote:
> It's the source code to the PIC that I'm interested in. I know how the
> protocol works and everything and I have made a decent attempt at getting
> the PIC to receive a byte from the calculator (I wrote a small 89 ASM
> program). From what I can work out the calculator is doing it's part, it's
> just the PIC stuffing up some where. Basically I have a loop which loops 8
> times receiving the bits from the calculator. It stores the bits to a file
> and at the end puts that file on PORTB.
>
> It all works fine accept the PIC begins a new loop as though there is more
> data (when there isn't) and sits waiting for what it thinks are the
> remaining 7 bits. So I decided to make it only loop 7 times any see what
> happens. Strangely enough it appears to loop 7 and only 7 times. The calc
> stops until the transmit times out. Obviously incomplete. For this reason I
> wanted to know if it had been done and how. This is me reason for waning to
> see someone else's code. Not really to copy, just to see how it's done.
>
> TIA
>
> Wesley Moore
>
> PS: I am programming the PIC an ASM also.
>
> ----- Original Message -----
> From: PerErik Klarenfjord <el8klap@cse.kau.se>
> To: <ti-hardware@lists.ticalc.org>
> Sent: Sunday, 22 August 1999 9:39
> Subject: RE: TI-H: PIC's and TI-89's
>
> >
> > I can send and receive with a PIC (16F84) and my calculator (TI-85). I
> > think its the same way to do it on a TI92 too.
> > Is it the source-code to the PIC or the calculator you want.. or is it
> > both ?
> > My routines is only in asm !
> >
> > >
> > >Hello All,
> > >I was wondering if anyone had successfully got a PIC to receive a byte
> > from
> > >a TI-89 and if so would they be willing to share their source code or
> > give
> > >me some pointers. I have tried myself and can't quite get it to work.
> > >
> > >TIA
> > >
> > >Wesley Moore
> > >
> >
> >
> >
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