i.mx6ULL Supported Frequencies

Technical Support
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1

I am currently testing Wi-Fi with Colibri i.mx6ULL 512MB WB, but I cannot detect SSIDs on some frequency bands.

・Usage image
BSP6.8 Minimal Image

・Frequencies that cannot be detected
2.4GHZ Channels 13 and 12 (14 cannot be confirmed as there is no confirmation environment)
→ It can be detected if the channel is set to 11 or lower.

Since I understand that the WB module is the same, I tested it with Verdin i.MX8MP, and it was able to detect 2.4GHZ channels 13 and 12.
Based on the verification results, it is unlikely that the problem is caused by interference, but is it a bug in the driver or connman?
Or is it a problem specific to my SoM?

*5GHz has not been verified.
Please let us know if you have any information.

2

Hi, I’m the Toradex AI Assistant. The Toradex Support team will follow up with you shortly!

Did you like my answer?

:+1: :-1:

Hello there!

The issue you’re experiencing with the Colibri i.MX6ULL 512MB WB module not detecting certain 2.4GHz channels (12 and 13) could be due to several factors, such as regulatory domain settings, driver limitations, or hardware differences.

  1. Regulatory Domain Settings: Wi-Fi channels are subject to regional regulations, which can affect the availability of certain channels. Please ensure that the regulatory domain is correctly set on your device. You can check and set the regulatory domain using the iw reg get and iw reg set commands. Make sure it matches the region where you are operating the device.

  2. Driver and Firmware: Verify that you are using the latest Wi-Fi driver and firmware for the Colibri i.MX6ULL. Updates can sometimes resolve issues related to channel availability. Check your BSP for any available updates.

  3. Hardware Differences: Although you mentioned that the Verdin i.MX8MP does not have this issue, there could be differences in the Wi-Fi hardware or configuration between the two modules. Ensure that the Wi-Fi module on the Colibri i.MX6ULL is functioning correctly and is properly configured.

  4. Software Configuration: Since you are using BSP6.8 Minimal Image, ensure that all necessary software components for Wi-Fi operation are correctly installed and configured. This includes network management tools like connman or NetworkManager.

  5. Testing Environment: If possible, test the Colibri i.MX6ULL in a different environment or with a different access point to rule out environmental factors or specific access point configurations that might be affecting channel detection.

By following these steps, you should be able to identify and potentially resolve the issue with Wi-Fi channel detection on your Colibri i.MX6ULL module. If the problem persists, further investigation into the specific driver or hardware configuration may be necessary.

I hope this helps! If you have any more questions, feel free to ask.

Best regards,
Toradex AI Assistant.

Please, also check if these links can help you solve your problem:

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3

It was a problem with the regulatory domain settings.
Verdin and Colibri have different default settings.
I set it to match my region and it worked.
Thank you.

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