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CC3235S: No 5 GHz Transmission Observed in AP Mode

Mason Dill
Prodigy 10 points
Part Number: CC3235S
Other Parts Discussed in Thread: SYSCONFIG

Tool/software:

Hello TI Support,

I'm using the CC3235S Wi-Fi MCU in Access Point (AP) mode with the SimpleLink SDK. In my image.syscfg file, I have enabled 5 GHz support via:

Radio Settings > 5 GHz Radio Settings > Support 5G = Enable

However, when I analyze the antenna output using a spectrum analyzer, I do not observe any activity in the 5 GHz spectrum—only 2.4 GHz activity is visible.

Could you please clarify the following:

  1. Does the CC3235S support AP mode operation on the 5 GHz band?

  2. If so, are there additional configuration steps required beyond enabling "Support 5G" in SysConfig?

  3. Is there a way to explicitly select a 5 GHz channel for AP mode?

Thank you for your assistance.

Best regards,
Mason Dill

  • 0
    Guru 79905 points

    Hi Mason,

    What channel do you have set for AP mode? If you have selected 2.4GHz channels, AP mode will work at 2.4GHz channel.

    How do you have set scan policy internal and mask for scanning?

    Jan

  • 0 in reply to Jan D
    Prodigy 10 points

    Hi Jan,

    I currently have the AP Channel set to channel 1. I understand that this is 2.4 GHz channel, but I only see available options for channels 1-14. Is there some other setting I can use to open up the 5 GHz channels?

    I'm am unsure of my scan policy. Can you tell me where I can find these settings?

  • 0 in reply to Mason Dill
    Guru 79905 points

    Hi Mason,

    I am sorry, but I don't use Sysconfig. You may to set setting directly with sl_ API calls. Description for sl_ API calls you can find at SWRU455 (e.g. sl_WlanSet(SL_WLAN_CFG_AP_ID, SL_WLAN_AP_OPT_CHANNEL,...). Depending of type of sl_ API call, it may to be NWP reset needed.

    Jan