i.MX ProcessorsのトピックRe: Adding HID gadget support (g_hid)

Adding HID gadget support (g_hid)

wayne_ng — Tue, 13 Sep 2011 12:12:47 GMT

I am trying to set my board to a USB device to replicate a keyboard, when I build g_hid and try to modprobe it I get the following error

modprobe: can't load module g_hid (kernel/drivers/usb/gadget/g_hid.ko): No such device

I came across this forum post which indicates a similar issue, but as you can see it does not elaborate on the solution I was hoping that someone here might understand where I must make the neccesary edits to the source for g_hid driver to work.

I have tried pasting the example from the kernel documentation for USB HID gadgets into arch/arm/mach-mx5/devices/usb.c but it had no affect.

Thanks

Re: Adding HID gadget support (g_hid)

wayne_ng — Wed, 26 Oct 2011 09:47:29 GMT

Just for the record, I solved this problem, turned out my dev board did not support this functionality out of the box, I created a patch to add the support, now my PC can see the dev board as a keyboard.

Re: Adding HID gadget support (g_hid)

myke_predko — Mon, 20 Feb 2012 04:20:14 GMT

Hi Wayne,

I'm interested in setting up my application as a HID device as well, when it is plugged into a PC. Could you please provide pointers to either examples or list the steps that you worked through to get a HID device application running? I am using an i.MX233 with the Linux 2.6.31 Kernel.

I'm not sure what you mean by "arch/arm/mach-mx5/devices/usb.c" - where can I find this example program? I can find other examples like https://www.kernel.org/doc/Documentation/usb/gadget_hid.txt but they require g_hid.h (as well as other includes & libraries) which are not in the

It looks like you need to Include HID support in the kernel build - I don't see this in ltib. I have tried building with both the "USB" and "HID" options but the necessary USB files do not seem to appear.

Any pointers or idea would be greatly appreciated.

Thanx!

mkye

Re: Adding HID gadget support (g_hid)

Abhi1z — Wed, 23 May 2012 20:25:14 GMT

Can you please provide me a detail that how could you create a patch and what it having. Awaiting for your prompt reply.

Thanks,

-Abhi

Re: Adding HID gadget support (g_hid)

walterbmarvin — Thu, 30 Aug 2012 21:02:19 GMT

Wayne said:

Just for the record, I solved this problem, turned out my dev board did not support this functionality out of the box, I created a patch to add the support, now my PC can see the dev board as a keyboard.

Re: Adding HID gadget support (g_hid)

walterbmarvin — Thu, 30 Aug 2012 21:03:11 GMT

Wayne said:

Just for the record, I solved this problem, turned out my dev board did not support this functionality out of the box, I created a patch to add the support, now my PC can see the dev board as a keyboard.
OK Could you detail your solution?