wcn36xx: energy detection

[Eugene Krasnikov]

Hmm, i do not think wcn36xx is supporting this right now. But i am not
saying it's not possible:) Let's try togather to find out if that is
supported. What i know so far is that wcn36xx supporst only rssi value
like it's done here:
https://github.com/KrasnikovEugene/wcn36xx/blob/master/txrx.c#L52.
Have you checked if prima is supporting this?

2013/9/30 Roman Lim <lim at tik.ee.ethz.ch>:
> Dear Eugene,
>
> I am looking for some information about the wcn36xx wifi chip. As you're developing an open-source driver for that chip, I tought you could give me some starting point or
> clues on how to tackle that problem:
> I' interested in measuring/detecting interference in the 2.4GHz band using WLAN. Usually wifi cards give some numbers about received signal strength of packets but not about noise floor when there is no
> communication. Currently I'm looking for mobile phone Wi-Fi chipset that could possibly support that feature. What I found so far are those two documents about wcn36xx:
>
> https://www.bluetooth.org/tpg/RefNotes/SWB-QC30H_Datasheet%20Rev7_TTA.pdf
> This one seems to indicate that there is a signal (GPIO pin) available that indicates energy on the channel (page 23: WL_CMD_DATA1, RF energy detection flag)
>
> In the firmware config file, there is an option called "gEnablePhyAgcListenMode": (line 261)
> https://www.codeaurora.org/cgit/external/hisense/platform/vendor/qcom-opensource/wlan/prima/tree/firmware_bin/WCNSS_qcom_cfg.ini?h=8130_CS
>
> Do you know if those two things are related and if it is possible to get the RF energy information from the WL_CMD_DATA1 signal? Or are there other mechanisms to measure the current energy on the channel
> at a relatively high rate (sub milliseconds range)? Any help is appreciated.
>
> Cheers
> Roman
>
> --
> Roman Lim / lim at tik.ee.ethz.ch / +41 44 63 27358
> Computer Engineering and Networks Laboratory, ETZ G82
> ETH Zurich
> Gloriastrasse 35
> CH 8092 Zurich/Switzerland



-- 
Best regards,
Eugene