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CC33XX-SOFTWARE: calibrator tool input parameters

SJ
Prodigy 120 points
Part Number: CC33XX-SOFTWARE


Tool/software:

Hi,

I have a question regarding some calibrator tool input parameters.

Tune Channel

When using this command for band 2.4GHz and Channels 1-13 there are no problems, but when I use 5 GHz band and starting with channel 36 like:

calibrator wlan0 cc33xx_plt tune_channel 36 1 0

I can see in the serial debug output for wlcore, that a test comannd failed and host doing a recovery:

Because there is no feedback for tune_channel command in calibrator tool, I tested around a bit and recognized that this will not happen when sending in channel range 1-33 in 5GHz range. So I'm a bit confused now. The linux user guide(scrennshot above) says that value of 36-165 should be used, and that's the only documentation I can find for this command. Calibrator itself is also not very helpful. So how to tune channels in 5GHz range correctly with calibrator tool?

Guard Interval for 11n Mixed Mode (set_tx)

When looking into linux user guide:

I can't find a representation for this Guard Interval 11n Mixed Mode like it's pictured above in Wifi-Toolbox. So how do I set this with calibrator tool?

Thanks a lot.

SJ

  • 0
    TI__Prodigy 100 points

    Hi SJ, 

    Your method of tuning the channel is correct. Our devices only support channels 1-13 in the 2.4GHz band and 36-165 in the 5GHz band. You can reference my code below to tune channel 36 and see if there are any other commands missing that may lead to this issue. 

    For the GI / LTF type parameter within the 11n preamble I am looking into this with our software team and will get back to you soon. 

    Thanks, 

    Katy 

  • 0 in reply to Katherine Ogrean
    Prodigy 120 points

    Hi  ,

    thanks for your reply, somehow I don't have any issues with tuning the channel anymore.

    But in addition to that and the guard interval question, I have a following question for the RX command. When looking into the Wifi-Toolbox again, I can see that preamble type and phy can be set to "all". How can I set this with calibrator tool? Or is this the standard configuration, that is valid when not sending any information about preamble_type and phy in the start_rx command?

    Thanks,

    SJ

  • 0 in reply to SJ
    TI__Prodigy 100 points

    Hi SJ, 

    For the guard interval in 11n the following parameters are true: 

    1 – Normal GI (0.8 μs guard interval)

    0 – Short GI Enabled (0.4 μs guard interval) – 11% increase in data rate

    you can then use the command: 

    calibrator wlan0 cc33xx_plt set_tx -gi_ltf_type <1/0>

    to set the variable in calibrator tool. 

    I will look further into the Rx command question and get back to you. 

    Thanks, 

    Katy 

  • 0 in reply to Katherine Ogrean
    Prodigy 120 points

    Hi  

    really appreciate your help, thanks for clarification.

  • 0 in reply to Katherine Ogrean
    Prodigy 120 points

    Hi  

    any news for the previous RX question?

    Thanks.

    SJ