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Enabling Wifi-Direct with WL1801MOD

Will Bruce
Prodigy 20 points
Other Parts Discussed in Thread: WL1801MOD

Hi All,

We're about to embark on a project to enable Wifi-Direct on WL1801MOD, between a battery powered remote unit and a mains powered base unit.

I was just wondering if there is anyone out there that has specifically dealt with Wifi-Direct using the WL1801MOD that might be able to offer advice on the quickest and easiest way to achieve it (the electrical engineers are worried we may have too much work ahead of us).

I’m also interested to know how much power consumption the chip uses with Wifi-Direct, and if we can turn off the daily calibration to save some power for the battery powered unit, as we will we need to stretch it out as much as possible.

Many thanks,

Will.

  • 0
    TI__Mastermind 35795 points
    hi ,
    pls consult following link for p2p commands :
    processors.wiki.ti.com/.../WiLink8_WLAN_Demo:_Linux
    WiFi Direct works out of the box - it should be plug and play for your specific scenario

    Please consult the data sheet for wlan current consumption numbers : www.ti.com/.../swrs152l.pdf

    it is not recommended to turn off calibration since radio needs to be calibrated periodically for serving band/ sub bands etc.

    Saurabh
  • 0 in reply to S
    Prodigy 20 points

    Thanks for the reply Saurabh, with regards to the calibration, are you saying that it is possible to turn it off (but not recommended)? Is it also possible to adjust the time period for calibration beyond 24 hours (say once per week) so that we might be able to keep it to some degree but also conserve battery?

    Kind regards,

    Will.

  • 0 in reply to Will Bruce
    TI__Mastermind 35795 points
    hi , wl8 calibrates much more frequently as opposed to once/day - There are periodic calibrations that are needed for serving channel / sub bands etc. But please bear in mind these calibrations are not power hungry since only fraction of calibration schedule need tx chain ON. Calibration can be turned off but it needs recompiling the firmware / re-testing etc. which is out of scope of this discussion. This is what i suggest - get EVM to evaluate the solution ; create a p2p connection and keep it running for a day or so and see the power drain . This will give you an accurate idea of power profile for your use case. WiLink8 employs multiple mechanisms to save power .
    Saurabh