usb programming

i have a ti-89 calculator, and i've bought a linking cable to join my computer to it. little did i know how flaky the connections were. i'd transfer maybe a file or two (over usb) and it would just stop until i reconnected my usb cable and tried again.

being fed up with this i did some research. i believe that the problem lies in the calculator's receiving ability. i think it may time some things wrong and the usb calls just pass right by it until i reconnect it.

there is another way to transfer files, but there's only software for calculator to calculator transfer. i want to replicate that connection from computer to calculator, because for some reason on the calculators that connection has never failed.

if you're completely confused at this point i'll just ask this question. how hard is it to write programming that sends signals to and from the calculator via the usb port? there is linux source code for a ti-89 usb driver, which i can check for reference. (too bad it doesn't compile...)

and one final question: am i wasting my time?

I guess the only thing I have to recommend is the fact that there are other transfer programs than the one provided by TI. I'm sure you already know that, but just in case, now you do ;)

www.ticalc.org is a great place to go. Assuming it's still running. What I normally had to do to get my calc to transfer right was get the plug wet, then twist it just right untill it worked :p A real pain in the ass.

Actually, I have another idea. You said it never failed a calc-to-calc transfer. Well, get a calculator emulator ;)

You can download VTi and use that. I had it for a while on my calc. Made transfers (and testing programs) very easy.

ygf, can u program in c++ for the ti-89?

No, but there is a C compiler. No C++ because it's a calculator ;) c++ has too much overhead, so they never made a C++ compiler. Or at least not while I was messing with them, maybe the do now, but I doubt it.

Quote:

---

Originally posted by TravisS
I guess the only thing I have to recommend is the fact that there are other transfer programs than the one provided by TI. I'm sure you already know that, but just in case, now you do ;)

www.ticalc.org is a great place to go. Assuming it's still running. What I normally had to do to get my calc to transfer right was get the plug wet, then twist it just right untill it worked :p A real pain in the ass.

---

can you go into great detail on this? it would save me a lot of pain if it's just a little water i need.

Quote:

---

Actually, I have another idea. You said it never failed a calc-to-calc transfer. Well, get a calculator emulator

You can download VTi and use that. I had it for a while on my calc. Made transfers (and testing programs) very easy.

---

unfortunately, it doesn't work with usb connections.

Quote:

---

I guess the only thing I have to recommend is the fact that there are other transfer programs than the one provided by TI. I'm sure you already know that, but just in case, now you do

---

i've tried the tilp driver for windows. (the tilp driver for linux doesn't compile on my machine.) no change.

Quote:

---

ygf, can u program in c++ for the ti-89?

---

assuming you meant c, no. i could learn, though. it looks like just another sdk. i have compiled hello worlds for the calc, but that's about it.

I HATE USB! Whenever I try to use something with it, it will ask me for my Windows ME Disk, which I don't have, because Win ME was installed in the factory! Now how bogus is ¿that?

btw, i'm sure it's not a usb problem because i have a usb mouse and a usb webcam which work correctly 99.9% of the time.