Problem detecting i2c address

Autonomous Machines Jetson & Embedded Systems Jetson TX2
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I am using Leopard Imaging’s LI-IMX283-MIPI camera and LI-NANO-CB carrier board. with NVIDIA Jetson TX2NX module. I have connected camera on CAM1 . The doccuments and codes shared by Leopard address 0x34 as i2c slave address.
But when i run “sudo i2cdetect” on terminal , and check on each i2c buses ,there is no i2c detection on 0x34 in any of the buses.
Any suggestion how to move ahead??

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Hi Shreyasj,

If you are unable to detect the i2c address, you should check that the camera/carrier is correctly powered on. One of the likely causes is that you are not enabling one of the necessary GPIOs

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img1
img11383×687 122 KB

Are u pointing out to CAM1_PWDN pin ?

1 Like
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Hi Shreyasj,

Yes, for that particular connector, I think that would be relevant GPIO. Also, if possible I would also go ahead and check that all of the fixed voltage pins (DVDD_CAM_IO_1V2, etc) also have the correct voltage.

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@SimonZhu
Could you help to check on this.

Thanks

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@shreyasj256
The 0x34 is 8-bit address. Please try 0x1a (7-bit) on Jetson.

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There is no i2c detection on 0x1a nor on 1x34 address upon running 'sudo i2cdetect ’ on all the buses.

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@shreyasj256
If you are using USB3.0 camera instead of MIPI. The USB3.0 port is not on Jetson I2C bus, so i2cdetect cannot found it .

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I am using a csi_mipi cable for connecting the camera to the carrier board. Also when I externally connect an arduino ATmega2560 board to communicate using I2C on J18 of LI_NANO_CB , I am unable to elicit an I2C response on 0x08(address of the slave) on any of the buses.

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@shreyasj256
Do you have the driver for LI-NANO-CB and IMX283-MIPI? There is an I2C switch ( TCA9548, 0x70) between Nano and camera, so the i2cdetect cannot detect sensor without driver.

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This feedback was helpful
I tried to send port select data to 0x70 address using ‘i2cset’ , and there was an i2c detection on 0x24 (we were expecting it on 0x34).
Anything wrong here??

I don’t have the driver for the same and am in the process of developing one.

I am under the impression , from going through leopard website, that device drivers for LI_NANO_CB and IMX185CS are available.

Would it be possible to share those device drivers and dtsi files, as it would come in handy in the development.

Also I would be obliged if you were to share a detailed datasheet of LI_NANO_CB(which would contain detail about every pin,port…).

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@shreyasj256
We found a preliminary driver of LI-NANO-CB + IMX283-MIPI camera. Please download the patch files from link below and give it a try.

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