GP32 Usb Coms

[Rik]

Hi,

I've not started coding properly on the GP32 yet, but I indend to soon once some other projects are out of the way.

I have a question, if it's possible to communicate between the GP32 and a PC program via the USB port? I don't just mean file copying, I mean for instance, a Four Swords (gamecube) type affair, where a player can control from the GP32 and also have their own screen for certain things, but with main action appearing on the PC.

Thankyou~

 

[woogal]

Yes (as long as you are also writing the pc app of course). I think one of the versions of darkfaders mylib has some usb code in it ( http://darkfader.net/gp32/ ).

 

[Vimacs]

you may want to look at um_s3c2400x_rev1.1.pdf
afaik it should be easyer to use device mode on gp32 and host mode on pc than vice versa.

 

[loki666]

mmmh, if you are using linux, you can emulate a tty over usb, and so using minicom as a terminal.
you should take a look at linux kernel, there is some samples of this somewhere in the source tree

loki

 

[mithris]

Vimacs: tough indeed, Linux you can get to act as a device.. getting a windows machine to act as a USB device sounds trickier indeed.

But the USB comm stuff in the GP32 BIOS is pretty simple to use, if one doesn't want to use the GP SDK one can just snag some of the structs from the headers and use the SWIs directly to setup the GP32 as a USB device.

---
mithris

 

[FabreNZ]

You can download the Slubman firmware source from http://www.gp32x.de/cgi-bin/cfiles.cgi?0,0,0,0,46,531 and it includes the GPDrive source. This could get you started on USB communications.

EDIT: I just found this http://www.ishani.plus.com/gp32/ USB communications library. It comes with an example and does seem pretty good!