USB OAK-FFC 4P ping was missed, closing the device connection

PedroGonzalez

Hello all,

I am working with a USB OAK-FFC 4P to synchronize two Global Shutter Colour Raspberry Pi cameras. The framework worked without problems, but few days ago after a calibration process the framework started to show this error in Windows when I connect the cameras with any code.

The cameras, the cables and the adapters works well, are not the problem.

Without the cameras connected I can access to the debug mode of the framework and it seems that there is enough CPU space:

This is a USB framework, not PoE, so the advises of the Troubleshooting are not very useful.

Can you help me, please? The framework is completely useless right now.

Thank you so much.

Best regards,
Pedro

jakaskerl

Hi PedroGonzalez

Could you run the rgb_preview in TRACE mode?
Also, try running cam_test.py.
Try a different host machine and a different usb cable
Try runnning with usb2 mode.
Paste the calibration dump you have recently done, perhaps there is something missing/corrupted.

Thanks,
Jaka

PedroGonzalez

Hi,

I have been able to avoid the ping error thanks to a upload bootloader with the device_manager but the X_LINK_DEVICE_NOT_FOUND still there.

Do you refer to this debug mode? DEPTHAI_LEVEL=TRACE python rgb_preview.py
I am not sure what do you mean with TRACE mode:

Same problem
I am testing with a Windows and a Mac. Same error.
I have worked with a usb2 cable, today I have a usb3 cable:
But the speed is always HIGH, no SUPER. All my ports are 3.0 or 3.2. The error is the same.
I think it is similar to calibrate.py, only change stuffs to use color cameras instead of mono cameras and the resolution. I cant send the complete code here, its too large

Thank you so much,
Pedro

erik

Hi PedroGonzalez ,
We apolgoizr for the inconvenience. Our engineer was just looking into this.. We will report back in a day or two when we find the root cause of it.

MatevzMorato

Hi PedroGonzalez

Thanks for reporting the issue and sorry for troubles.

I would kindly ask you to provide some more information, so we can pinpoint the issue:

Is the issue/error consistent?
Did it happen exactly after calibration procedure?
Can you provide as much information about how the calibration was done, what command was used exactly?

From the posts above I assume that running examples w/o cameras works for you(eg. https://github.com/luxonis/depthai-python/blob/main/examples/SystemLogger/system_information.py). Is this correct?

PedroGonzalez

Hi,

Yes, the actual error, X_LINK_DEVICE_NOT_FOUND, is consistent. Appears with any cable and in any code.

I cant remember if was exactly after a calibration process when the framework started to crash, not 100% sure but near. I thought was relevant in terms of CPU use.
The line was: python3 calibrate.py -s 1.6 -nx 17 -ny 9 -brd calibdata.json
And the calibdata.json:

{
"board_config":
{
"name": "Custom FFC",
"revision": "R1M0E1",
"cameras":{
"CAM_B": {
"name": "right",
"hfov": 120,
"type": "color",
"extrinsics": {
"to_cam": "CAM_C",
"specTranslation": {
"x": 500,
"y": 0,
"z": 0
},
"rotation":{
"r": 0,
"p": 0,
"y": 0
}
}
},

        "CAM_C": {
            "name": "left",
            "hfov": 120,
            "type": "color"
        }

    },
    "stereo_config":{
        "left_cam": "CAM_C",
        "right_cam": "CAM_B"
    }
}

}

I can send you the calibration.py by email. I cant do it here because its too big but the only change I did was
line 556: cam_node.setResolution(dai.ColorCameraProperties.SensorResolution.THE_1440X1080)

Yes, without cameras I dont have the problem. The cameras work with a Raspberry Pi and I have others orange cables and RPI UC 244 adapters and I have tested everything so I assume that the problem is not there.

Thanks,
Pedro

MatevzMorato

I see.

Please save your calibration (https://github.com/luxonis/depthai-python/blob/main/examples/calibration/calibration_reader.py)

and then do a factory reset of the calibration with by running this example https://github.com/luxonis/depthai-python/blob/main/examples/calibration/calibration_factory*reset.py
*
Then try again if you can run your cameras.

PedroGonzalez

I couldnt save the calibration because I did a update bootloader and a factory reset with the device manager yesterday.
The calibration factory reset was good but the error is the same after that.

Thanks,
Pedro

erik

Hi PedroGonzalez ,
I think it would be best if we replace the device, and we can locally debug it. Please send an email with this forum link and our support team will handle it further.
Thanks, Erik

PedroGonzalez

Hi Erik,

Okay, thank you so much for your help.

Pedro