Toucpad/trackball Attached?


k0in

Still Fresh
Joined
Oct 31, 2005
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16
Just some ideas.

Even with not-powered USB-host, could it be possible to have some PS/2-EXT adapter and connect small touchpad to the device? You could have it attached to the back, and control it with forefingers.

Usually only thumbs are used pressing buttons and joystick, so forefingers just rest on the back of device.

I think it would be awesome, even better than touchscreen....

>>EDITED<<

Probably such adapter would be useful.

>>>EDITED<<<

Or you would be able to connect a keyboard?
Keyboard connected to computer, stealing power from RS-232
 
Just some ideas.

Even with not-powered USB-host, could it be possible to have some PS/2-EXT adapter and connect small touchpad to the device? You could have it attached to the back, and control it with forefingers.

Usually only thumbs are used pressing buttons and joystick, so forefingers just rest on the back of device.

I think it would be awesome, even better than touchscreen....

It's possible if it's a) self powered and B) if someone ports/writes some drivers for it. It'd be pretty neat though.
 
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Just some ideas.

Even with not-powered USB-host, could it be possible to have some PS/2-EXT adapter and connect small touchpad to the device? You could have it attached to the back, and control it with forefingers.

Usually only thumbs are used pressing buttons and joystick, so forefingers just rest on the back of device.

I think it would be awesome, even better than touchscreen....

It's possible if it's a) self powered and B) if someone ports/writes some drivers for it. It'd be pretty neat though.

So it is impossible to connect unpowered device to EXT? Is chatboard selfpowered?
 
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No EXT can support unpowered devices...i think people are a little used to the usb host/powered/unpowered posts always getting posted. ;). I have to admit i read it like another one of those first ^_^
 
hang on. didn't we clear this up before. That the USB device on the GP2X does not support host.

Or did I misread?
Oh, I read something opposite. Could you please provide a link? I read it is USB host, but not powered.
 
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Or you would be able to connect a keyboard?
Keyboard connected to computer, stealing power from RS-232

i don't understand your point...rs-232 is the same as serial port, as in serial ports on computers

You're right, I don't know why, I thought EXT is similar to RS-232, now I read FAQ and am sorry for misunderstanding.
 
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hang on. didn't we clear this up before. That the USB device on the GP2X does not support host.

Or did I misread?
Oh, I read something opposite. Could you please provide a link? I read it is USB host, but not powered.

This is the way i have understood it:
USB could maybe support host mode if we had drivers and programs supportting it and some way to power devices. Gp2x, as is, DON'T support host mode, and no software in it supports it. I also read something about host mode would be usb 1.1 as usb 2.0 controller is routed "outside" of processors and such, and therefore out of reach for software.
 
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USB is not host, it is slave. This will allow the GP2x to act as a mass storage device so you can copy things to and from your SD cards.

The MMSP2 Chip does have an on board USB 1.1 host but GPH isn't using that, thye are instead using a separate USB 2.0 slave.
 
Gp2x, as is, DON'T support host mode, and no software in it supports it. I also read something about host mode would be usb 1.1 as usb 2.0 controller is routed "outside" of processors and such, and therefore out of reach for software.

Yet, the FAQ states:
"USB Peripherals: Since the GP2X's USB host is not powered, to use any peripherals they need to supply their own power. Some examples of peripherals that might work with the GP2X someday are the Apacer Steno Hard Drives and the Cyberpower USB Hubs. Such peripherals operate on their own battery power, so all we need is software to allow the GP2X to interface properly with them. These are NOT guaranteed to work with the GP2X, so don't run out an buy them just yet. But they represent good examples of what might work well with the GP2X in the near future."

So, does the gp2x support host mode or not? I had always assumed that running as a host was more than just software? I thought it was a hardware difference.

Can someone please set this straight, (and if it is slave only, then update the FAQ).
 
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Simple answer.

GPH did not expose the pins from the CPU for the USB 1.1 controller (host/slave) in the MMSP2 to anywhere on the PCB (well on the dev boards anyway) so there is no way to connect anything to it.

GPH used a NetChip 2272 IC for the USB 2 slave support.

Look at the specs of the NetChip 2272 and make your own mind up. I made mine up a long time ago ;).
 
Simple answer.

GPH did not expose the pins from the CPU for the USB 1.1 controller (host/slave) in the MMSP2 to anywhere on the PCB (well on the dev boards anyway) so there is no way to connect anything to it.

GPH used a NetChip 2272 IC for the USB 2 slave support.

Damn ********. ;)

It would be much harder to have a second mini usb socket for the MMSP2's usb controller...

Look at the specs of the NetChip 2272 and make your own mind up. I made mine up a long time ago ;).

But what about the Ext socket? Isn't it capable of more than just a TV-out?
http://wiki.gp2x.org/wiki/EXT - don't explain all. What about those UARTs?
They could be usefull for connecting some peripherals (eventually with an appropriate converter), couldn't they?
 
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Just use a serial keyboard, like a chatboard.

Small off topic, How are the new EXT ports different, I thought I saw something on the bottom of my friends new cellphone that might work.

or, we could put more pins in the TV-out adaptor.
 
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