CC2650: Broadcasting Shutdown Mode

Nanjun Xu1

Part Number: CC2650

Hello,

I am working on the CC2650 for BLE project. It is based on simple_broadcaster_cc2650lp and referenced to pinShutdown example as well.

The application is quite straight forward. After wake-up, blinking LED and setting PINCC26XX_setWakeup(ButtonTableWakeUp, and finally, going to shutdown via Power_shutdown(NULL, 0);

The logic operates properly after each wakeup, but the current consumption is about 500uA all the time. I guess it does not go to sleep mode, however it can be waked up and operates as desired.

Where could be the problem? Except for programming simple_broadcaster_cc2650lp_app, should I also do something in simple_broadcaster_cc2650lp_stack?

Thanks for reply!

Nanjun

over 4 years ago

0 desouza over 4 years ago

TI__Guru**** 171349 points

Nanjun,

Current measurement of these devices can vary wildly depending on the method of measurement. I would definitely check the app note below that covers some good scenarios and techniques.

https://www.ti.com/lit/pdf/swra478

The Power_shutdown call looks alright and you don't need to modify the _stack project.

Hope this helps,

Rafael

0 Markel Robregado over 4 years ago

Guru 86785 points

Hi,

To lower power consumption do this below

Remove code that opens the UART.
Shutdown the SPI External Flash.
Remove jumpers P4 and power externally.

-kel

0 Nanjun Xu1 over 4 years ago in reply to desouza

Intellectual 380 points

Hello Rafael,

Thanks for your helpful hints!

I will check the details as mentioned in this app note.

Nanjun

0 Nanjun Xu1 over 4 years ago in reply to Markel Robregado

Intellectual 380 points

Hello Kel,

Thanks for your help!

It works as this suggestion.

Nanjun

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CC2650: Broadcasting Shutdown Mode