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CC2642R: Power Optimisation for BLE

mohan prasanna R
Intellectual 710 points

Part Number: CC2642R
Other Parts Discussed in Thread: SYSCONFIG, CC2652P

Hi,

Question 1) 

   We are using CC2642R controller as a peripheral for BLE application and we are flashed simple peripheral code in this and we fixed this mcu in a  battery based product .....so we need power optimisation in this BLE part ...

1) can you suggest , what are the way to optimise the power consumption in CC2642R?

2) once the device is power ON it starts advertising ......and if none of the device requests the connection establishment .....advertisement is automatically disabled after 5 minutes ...... Is there any way to reduce it to 2 minutes...?

3) in sysconfig file ....... In Broadcasting configuration -> Advertisement set 1 -> Advertisement parameters 1 -> Primary PHY Interval Minimum (ms) is 100 ms (i.e :->Minimum and maximum advertising interval of the primary PHY is 100 ms ).............so shall we increase that to 300 ms ? Is this will be used for power optimisation ? or any disadvantage are here by reducing this advertising interval ?

4) and suggest is there any power optimisations are there ?

 

Question 2)

To extend the BLE range , Is there any RF power calibration is available ? If yes, kindly provide the meathod to do it .....

  • 0
    TI__Mastermind 38575 points

    Hello,

    mohan prasanna R said:

    1) can you suggest , what are the way to optimise the power consumption in CC2642R?

    You can use our Bluetooth LE Power Calculator to estimate the amount of power your device is consuming from wireless activities. While the calculator may not be exact, any actions you take to reduce the power in the calculator should reduce the actual power consumed by your device. Personally, I would recommend ensuring your idle current is low by disabling any peripherals you might have connected, reducing the advertising/connection intervals, lowering the TX Power and increasing the data rate to the 2M PHY. You'll have to pick from these actions which ones are suitable for your application.

    mohan prasanna R said:

    2) once the device is power ON it starts advertising ......and if none of the device requests the connection establishment .....advertisement is automatically disabled after 5 minutes ...... Is there any way to reduce it to 2 minutes...?

    Yes, you can do this. Refer to the section on limited advertising in the simplelink academy here.

    mohan prasanna R said:

    3) in sysconfig file ....... In Broadcasting configuration -> Advertisement set 1 -> Advertisement parameters 1 -> Primary PHY Interval Minimum (ms) is 100 ms (i.e :->Minimum and maximum advertising interval of the primary PHY is 100 ms ).............so shall we increase that to 300 ms ? Is this will be used for power optimisation ? or any disadvantage are here by reducing this advertising interval ?

    If you reduce the advertising interval, you will reduce the power consumption. However, the disadvantage you'd face is that your scanning device will need to scan for longer to be guaranteed to find the advertiser, which will make it take longer for the devices to begin connection.

    mohan prasanna R said:

    4) and suggest is there any power optimisations are there ?

    See my suggestions under question 1.

    mohan prasanna R said:

    To extend the BLE range , Is there any RF power calibration is available ? If yes, kindly provide the meathod to do it .....

    TI computes a TX Power table to ensure that the device broadcasts as efficiently as possible. We do not recommend recalibrating the device, and we will not provide support for this. You can increase your BLE range by using a coded PHY, or by broadcasting with more TX Power. You may also consider using a device with a built in power amplifier, such as the CC2652P.

    Best,

    Nate