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CC2640R2F: How long Bluetooth Start up time

Vasu Khwanyuen
Intellectual 535 points

Part Number: CC2640R2F
Other Parts Discussed in Thread: LAUNCHXL-CC2640R2,

Hello Ti,

1.When supply power to bluetooth, How long Bluetooth start up?

2.How long Bluetooth wake up from shut down?

And if Hardware startup + Firmware startup + Margin?

When, 

Firmware startup = TI RTOS startup + Application initial.

.

Are the 2 boards different? 

-RGZ Package

-RHB Package

.

I use software project Simple serial socket Server

Copyright (c) 2020, Texas Instruments Incorporated

SDK: 3.30.00.20

Code Composer Studio Version: 10.1.1.00004

This is HitHub link of  TI SimpleLink CC2640R2 SDK 3.30.00.20 

https://github.com/ti-simplelink/ble_examples/tree/simplelink_cc2640r2_sdk-3.30

This is LAUNCHXL-CC2640R2 LaunchPad Board link

https://www.ti.com/tool/LAUNCHXL-CC2640R2

Thank,

Vasu Khwanyuen

  • 0
    TI__Mastermind 25810 points

    Hey Vasu,

    Vasu Khwanyuen said:
    .When supply power to bluetooth, How long Bluetooth start up?

    I found a similar post that can provide some insight: link here.

    Unfortunately, there isn't existing data for timing, as this is very application dependent. I would take the recommendations from the related post and toggle a GPIO to measure the startup time. At the application layer, I would consider the device "ready for BLE" upon entry of the GAP_DEVICE_INIT_DONE_EVENT inside processRoleEvent() in your example project file. This will be a good starting point.

    Vasu Khwanyuen said:
    2.How long Bluetooth wake up from shut down?

    A different approach that can also answer both items 1 and 2 would be to take a current profile of the device. There, you should see periodic wakeups and you can measure the time it takes to execute these events. You can also use Energy Trace to measure this (assuming you have a CC26x2R1 launchpad handy).

    Vasu Khwanyuen said:
    Are the 2 boards different? 

    Correct, both devices are offered in different packages (5x5 or 7x7). The CC2640R2 Launchpad  hosts the 7x7 variant (i.e. RGZ). Note, the firmware executed for each package variant is very much the same. Since the 5x5 package has less available GPIOs, the only change going from one variant to the other is you will have to move some pin assignments around (in software).

  • 0 in reply to Ammar N
    TI__Mastermind 25810 points

    Additionally, if you would like a rough estimate of power consumption of our devices running the Bluetooth LE stack, take a look at our BT-POWER-CALC.

    I hope this helps.

  • 0 in reply to Ammar N
    Intellectual 535 points

    Thank you Ammar N

    Mean startup time it not fix but it follow firmware of cc2640r2f on initial process.I understand right?

    Thank

  • +1 in reply to Vasu Khwanyuen
    TI__Mastermind 25810 points

    Hey Vasu,

    If I understand you correctly, yes. The startup time can change depending on any additional application tasks added. You can use our default unmodified example to get a base line of the startup time for our minimal example. This should give you an estimate.