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TeamOverload
Joined: 20 Apr 2006
Posts: 41
Location: CT
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 Posted: Mon Dec 18, 2006 2:09 am Post subject: USB Driver |
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Alright, first off let me state I am a complete n00b when it comes to hardware so bare with me.
With the addition of the camera icon on 3.0 a new USB mode has been added. The computer can not automatically detect how to use it obviously, as it is intended for a camera. Is there a way to write a custom driver to support it? What type of access do you think we would have through it?
Is flashing via USB even possible? I remember reading somewhere that the USB camera could flash it's firmware, and the camera is connected via USB, but again I'm not sure.
Does anyone has a list of functions that can be used with the camera? Is it possible to send any commands via USB?
That's all the questions for now
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adrahil
Joined: 16 Mar 2006
Posts: 277
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| Posted: Mon Dec 18, 2006 5:42 pm Post subject: Re: USB Driver |
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| Quote: | | With the addition of the camera icon on 3.0 a new USB mode has been added. The computer can not automatically detect how to use it obviously, as it is intended for a camera. Is there a way to write a custom driver to support it? |
Yes, there always is a way. The only thing is HOW? :) I'm no good at driver coding, but some people here could.
| Quote: | | What type of access do you think we would have through it? |
Well, normal USB access I suppose... You know, the devices connected to the PSP can all be interfaced from high to lower level thanks to the sceUsb* calls. In theory one can connect anything as long as one writes a coherent protocol.
| Quote: | | Is flashing via USB even possible? |
Depends what.... It is possible to flash the firmwares of devices like the usb camera, but the NAND flashing is yet unknown. I'd think it is possible to boot onto a USB-connected nand/memory with firmware as there is a mountpoint of "flashfatX" (used for flashX:, if I remember) called "Fat Over USB"... To see ;)
Anyway, I'm not sure about all of this, so don't take it as known...
== End of speculation and unsure part ==
| Quote: | | I remember reading somewhere that the USB camera could flash it's firmware, and the camera is connected via USB, but again I'm not sure. |
Yes, you have read it somewhere. I don't recommend doing that though, as I'm not sure whether the flashing of a new firmware is non-reversible. If you CAN find a working FW, or have a free repair guarantee, you could try to. Here's the call:
int sceUsbCam_C72ED6D3(int mode, void* fw_image, int fw_image_size);
(aliased as sceUsbCam_driver_C72ED6D3)
| Quote: | | Does anyone has a list of functions that can be used with the camera? |
You could have a look at http://moonlight.lan.st/3.02/kd/usbcam.html for a list of functions to use with the camera usb driver. Moreover, I have started trying to look a little in these functions, but not having a Chotto Cam it is hard to work my way through :) I'll get it as soon as it is out in Europe. (If it will ever...) Check out a topic on that in the hardware forum.
| Quote: | | Is it possible to send any commands via USB? |
Yes it is. You can peek at the USB headers in pspsdk, although they're quite incomplete.
http://psp.jim.sh/pspsdk-doc/pspusb_8h.html
http://psp.jim.sh/pspsdk-doc/pspusbbus_8h.html[img][/img] |
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TeamOverload
Joined: 20 Apr 2006
Posts: 41
Location: CT
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| Posted: Tue Dec 19, 2006 6:01 am Post subject: |
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Wow, thanks for all that. I'm looking over the information now.
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