1 Reply Latest reply on Jul 2, 2018 12:25 AM by Gyan Chand

    Advertising while Deep Sleeping

    ayork_3398046
    ayork_3398046 Jun 30, 2018 6:17 PM

      Is it possible to advertise while in Deep Sleep mode?

       

      I read somewhere that Advertising runs off the ECO clock, which is a HFCLK. Any time a HFCLK is running, we cannot obtain Deep Sleep. With that being said, my answer should be no. However, i'm wondering if there is a way to either use a LFCLK for advertising instead (and also for scanning). I'm running a battery operated system and really need to save some power!

       

      As a fallback, I do know that there is the ability to go into Deep Sleep mode between advertising intervals. I'm not sure how to do this yet, but i'd rather sleep the entire time i'm advertising, rather than every interval.

       

      Thank you for any thoughts or advice!

        • 1. Re: Advertising while Deep Sleeping
          Gyan Chand
          Gyan Chand Jul 2, 2018 12:25 AM (in response to ayork_3398046)

          Hello,

           

             Yes, you can advertise while putting the BLESS/PSoC in DeepSleep during the advertisement intervals.

           

          At every advertisement and connection interval , the BLESS interrupt wakes up the BLESS as well System(PSoC) from the DeepSleep Mode.

           

          Please refer below  Application Note fro more details on BLE Low Power Application Design.

           

                 http://www.cypress.com/file/140991/download

           

          Also, refer the 'BLE_FindMe' code example from the PSoC creator ( Navigate to the PSoC Creator -> File-> Code Examples -> Search for 'BLE_FindMe' ) which has the Low Power Implementation and  will help you to understand the concepts in better way.

           

          -Gyan