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thanks for you reply jjorgr.
Oma7144, the USB ID into USB Host Controller is:
Cimicro Co.,ltd Vimicro USB2.0 UVC PC Camera
if you can do a kernel module with de uvc controller enabled correctly, how i can compensate for you help?
i can confirm that with this usb cam y can connect and workd good with other device.
I have spent 3 days trying to compile a linux kernel rk3188 and I have not gotten it to start the tablet with any of them. Just start with the kernel of your rom
Pls find attached the module. You may need an app to activate the cam. Try this one.
- Oma -
To use ADB you need to set storage mode to MTP and debugging to USB.
You also can work on the tab with a terminal emulator.
The app is maybe to old. You can also try with apps from Play-Store.
- Oma -
ok, know i can connect with adb to the devices. When i write insmod system/lib/modules/uvcvideo.ko, i receive a message with "insmod: can't open 'system/lib/modules/uvcvideo.ko'
if i try to copy file into device, showing next message:
adb -s MJ3VDXYXJA push c:\uvcvideo.ko system/lib/modules
failed to copy 'c:\uvcvideo.ko' to 'system/lib/modules/uvcvideo.ko': Read-only file system
You cannot load something which is not there.
Open FileManagerHD first, go to settings and enable Root Explorer and mount system as writable.
- Oma -
Fine. Pls find attached a script which will autoload the driver.
Copy the script to system/etc/init.d and set rights to 775.
- Oma -
Oma7144, thanks you. Now i can connect the camera and read /dev/videoX generated with a own app.
I have a final issue with this question.
When i plug the cam, now the node /dev/videoX is generated but when i open an app for show the image, i can view good but lot of times, the image stop and i see that the /dev/videoX change
1º Connect the camera and now /dev/video2 generated
2º I use an app for view the image... in random time, the image broke.
3º I see that de /dev/video2 is delete and now i have /dev/video3.
Can you think of any solution?
Thanks you other time!
Unfortunately I do not have an usb-cam nor do I have any experience with this.
Keep on trying other apps and search the net for other threads showing experience on that.
- Oma -
ok Oma, thanks you for the help. Now i can confirm to my boss that there are solution software.
I read in other threads the problem of usb lost connection. For solved, i need change other parameters of drivers and for this, i need recompile the kernel with the changes.
Can you send me the default .config of this tablet kernel?
I'm using https://github.com/phjanderson/Kernel-3188 for this but i dont know if maybe works. If i can compile a custom kernel, i can solve the problem.
Sources in this git are for a stick. A tab is much more complexive (screen, touch, sensor, ...).
Pipo refused to be GPL compliant, so no kernel sources available.
- Oma -
that means that I will not be able to configure its own kernel to fix the problem?
it seems that my problem is a generic problem rockchip. This is de dmesg.log:
<6>[ 158.474178] qtaguid: ctrl_counterset(s 1 10067): insufficient priv from pid=425 tgid=365 uid=1000
<6>[ 159.469529] DWC_OTG: dwc_otg_hcd_urb_enqueue urb->transfer_buffer address not align to 4-byte 0xe5cf9eea
<3>[ 159.469624] uvcvideo: Failed to query (GET_DEF) UVC control 2 on unit 2: -1 (exp. 2).
<6>[ 159.470076] DWC_OTG: dwc_otg_hcd_urb_enqueue urb->transfer_buffer address not align to 4-byte 0xe5cf9d0a
<3>[ 159.470137] uvcvideo: Failed to query (GET_DEF) UVC control 3 on unit 2: -1 (exp. 2).
I will continue investigating. Thank you very much!
I bought to Pipo S6 in Feb. One of them stopped working the first day and I sent it to China and have still not received it.
The other one died in March, so I repaired it in a local store, the clerk didn't know how they fixed it, and the technichian was not there to ask.
Yesterday it died again...
It seems like this is the same issue as "visions84".
It is completely dead, when I connect the charger the charging light is red. The computer does not detect any device when connecting the USB.
I do believe it is a SW issue. I would like to try to disconnect the battery as "visions84" did, to see if that works, but I can't figure out how to open it.
Any advice anyone?
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