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**petesimon** · 09-09-2019, 12:41 AM

hey dtralara . thanks for sharing! did you already share this firmware in April of this year?

hm. that's odd. it worked for me in Linux Mint 19 (could be 19.1) and 'guvcview' software. See here - click this link

Remove your sd-card first, and install 'guvcview' ( http://guvcview.sourceforge.net ) or another UVC compatible software package. And try again.

1. - Is it common for some firmwares to be defective for usb-webcam support?
2. - What other firmware can I flash on my camera?
3. - What other module can I try on my linux box?
4. - Any other idea I could try?

Answers to your questions:
1. - yes. these cams are cheap, $20 USD and up.

2. - your firmware is 8126464 bytes size, so you can search this number "8126464" and match the same LCD and sensor.
- watch the flash-firmware video from TIME 13:50 https://youtu.be/QrTxFjIiHvc?t=830 (do not use ADB)

3. - modules? such as "modprobe ..." . not sure. but install 'guvcview' , install "uvcdynctrl" - click here , and read info online - https://wiki.archlinux.org/index.php/Webcam_setup

4. - try another camera to be sure that your Linux setup is working. Try other usb ports. sometimes USB2.0 (not3.0) works better for cheap hardware. Try other (better) USB cables.

For the google drive link that you now shared, I had to re-organize and rename the .img files, and run the 'refex.bat' script. Hm challenging but interesting and educational

In the future, please use this backup script for Debian/Ubuntu Linux - https://www.dropbox.com/s/txrjqgu8nb...press.zip?dl=0
and here are more backup scripts for Windows/Mac - https://www.goprawn.com/forum/allwin...5025#post15025
- These scripts properly make all 0/1/2/3/4/5/6 .img files and make a 'full_img.fex' file, all nicely wrapped in a .zip or .rar compressed file.

Use this unfex-refex scripts for your 'nk' firmware - https://www.dropbox.com/s/6n6f4i8r3u...26464.zip?dl=0
Here are more unfex-refex scripts for other firmware - https://glot.io/snippets/fcg8vyjyyv/...links-list.txt

your FW info:

Code:

Product:  
   fx1gddr imx179vpq-sdv
Manufacturer:  
   lzm
Short id:  
   fuxin
OEM id:  
   zhongxing_ir
Camera type:  
   fx2830
FW orig. date:  
   20180319
FW mod. date:  
   20171012
Camera name:  
   (nk)
Version:  
   20180903V25
LCD model:  
   ili9225ghsd
LCD resolution:  
   220x176  
LCD count:  
   1
Sensor model:  
   imx179v
   (this could be imx179s or imx175, but unsure)
Wifi:
   xradio
Logo:
   nk
FULL_IMG.FEX size:
   8126464 bytes

**dtralara** · 09-09-2019, 09:56 PM

Thanks for your help.

I've tried various v4l2 viewer applications but the uvcvideo module keeps complaining.

I managed to get a feed in one particular case: if I open qv4l2 (v4l2-utils) and pick the device

Code:

 /dev/video0

fast enough before it disappears, the camera stays in the 'PC CAMERA' mode and the usb playback works.

The uvcvideo module complains the entire time:

Code:

[] uvcvideo: Failed to query (GET_DEF) UVC control 2 on unit 2: -110 (exp. 2).
[] uvcvideo: Failed to query (GET_DEF) UVC control 2 on unit 2: -110 (exp. 2).
[] uvcvideo: Failed to query (GET_DEF) UVC control 2 on unit 2: -110 (exp. 2).
[] uvcvideo: Failed to query (GET_DEF) UVC control 2 on unit 2: -110 (exp. 2).
[] uvcvideo: Failed to query (GET_DEF) UVC control 2 on unit 2: -110 (exp. 2).
[] uvcvideo: Failed to query (GET_DEF) UVC control 2 on unit 2: -110 (exp. 2).
[] uvcvideo: Failed to query (GET_DEF) UVC control 2 on unit 2: -110 (exp. 2).

But the usb playback works (at least for a couple of minutes)

If I'm not quick enough however, the devices

Code:

/dev/video0
/dev/video1

disappear (after 1 second) and the camera returns to its menu.

Thank your for your suggestions. So far I've tried:
1. different cables and different usb ports.
2. changing the buffering as you suggested (options quirks=0x80 or 0x100 for the uvcvideo module).
3. using a different linux (ubuntu instead of arch)
But nothing improves the behavior.

So now, I will try
1. Finding a compatible firmware on the list and flash it
This is the list, right?
https://www.goprawn.com/forum/allwin...?p=130#post130

**dtralara** · 09-09-2019, 10:00 PM

Postscriptum:

PS1:
Yes, I already uploaded this firmware (as a single full_img.fex file at the time). I should have made this clearer. I used the names as they appeared in the /proc/mtd table. Sorry for the inconvenience.

PS2:
Thanks for the backup.sh linux script. I wish I had found it back in april. For information, the script didn't work as is for my camera. dd is missing on this camera. So either I use their 'toolbox dd' or I push busybox

Code:

    adb push busybox-armv7r /busybox
    adb shell
    chmod 555 busybox

Either way, I needed to modify line 48 accordingly.

PS3:
Thanks for the FW info. Did you extract it with the 'refex.bat' script?
You've probably been asked this a million time already but, where is this script?
Is it this one?
https://www.dropbox.com/s/6n6f4i8r3u...26464.zip?dl=0
Any bash (linux friendly) version available somewhere here?

PS4 (unrelated):
Is there a tag, like [code] that formats the text into monospace code text but within a paragraph?

**dtralara** · 09-13-2019, 12:29 PM

Questions about firmwares and compatibility.

yes https://www.goprawn.com/forum/allwin...?p=130#post130 is the list
be sure to remove SD card first. and did you also try another action-camera or webcam via USB in Linux?
you could search for firmware that is 8126464 bytes as the size. also could search for fw 7798784 bytes size. you get the idea?

I downloaded every zip file listed in post, so I could look for an full_img.fex that satisfies every compatibility requirements as I understand them:
- firmware size,
- sensor type,
- LCD model.

Off the 143 links in the post, only 3 are smaller than 12M. Off those 3, only 1 seems to have a sensor of type imx179. And its LCD model seems incompatible with mine (ili9225ghsd):

Code:

------------
Link:     0B4tyaJWIqCb_dEx1R0twdE5ULWM
Product:  crane-sdv
Size:     8388608  
Sensor:   gc2023_mipi_2lane
LCD:      ili9341
------------
Link:     0B4tyaJWIqCb_d1QxaFJYOVBxM3M
Product:  crane-sdv
Size:     8388608
Sensor:   gc2023_mipi_2lane
LCD:      ili9341
------------
Link:     0B4tyaJWIqCb_RHlCUHNyMUp4TnM
Product:  crane-sl609
Size:     7798784
Sensor:   imx179
LCD:      st7789
------------

I'm a bit confused. So I have 3 questions:

1. Is the firmware size a firm requirement? What indicates that my hardware won't accept a 12M firmware? In your experience, do cameras have various capacities?

2. How about the LCD controllers? In your experience, does a firmware only handle one type of LCD controller or does it detect the hardware (through some sort of udev) and load the correct kernel modules accordingly?

3. Are all the candidate firmwares you gathered listed that single post?

Thanks again for your help.

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