CCS/CC2642R: Not Going in sleep

Rakesh Rajbhar

Intellectual 630 points

Part Number: CC2642R

Tool/software: Code Composer Studio

Hi,

I am working on cc2642.

I am using the below IDE and SDK.

- CCS 9.2.0

- simplelink_cc13x2_26x2_sdk_3_30_00_03

- base code -: simple_peripheral_oad_onchip.

I have i2c and SPI interfaces in my application.

I have timer for every one minute, once the time expires device will wake-up, read temperature and advertise it for 6 seconds and stops advertisements.

As per my understanding device should go in sleep mode if no tasks are running but(event_pend) but I am observing my device is taking around 1.6ma current in sleep mode.

it seems the device is not going in sleep mode I am closing my i2c and SPI if not using.

Please advise how to put the device in sleep mode I should get only ~5ua current in sleep mode.

Please let me know if you need further information from my side.

over 5 years ago

0 Elin W over 5 years ago

TI__Genius 14845 points

Hi Rakesh,

Can you provide a screenshot of what you are seeing in ROV?

Thanks,
Elin

0 Markel Robregado over 5 years ago

Guru 86755 points

Hi,

Going to sleep mode or standby mode of CC2642R will not lower the current consumption of your I2C and SPI interfaces. You need to take care of that. Normally some I2C and SPI devices you can put it in low power mode. After that your overall current consumption will be lower.

-kel

0 Rakesh Rajbhar over 5 years ago in reply to Elin W

Intellectual 630 points

Hi Elin,

Thanks for the prompt response, I was not able to provide a screenshot on that moment.

Please find the screenshot I have captured a screenshot of Task and Idle modules please let me know if you are expecting something different

0 Rakesh Rajbhar over 5 years ago in reply to Markel Robregado

Intellectual 630 points

Hi Markel,

Thanks for the reply, I understand what you are saying.

but, I am closing the interface as well as turning off the power off those particular slave devices which are connected to I2C and SPI. when not in use.

0 Rakesh Rajbhar over 5 years ago in reply to Rakesh Rajbhar

Intellectual 630 points

Please find additional modules in ROV

0 Markel Robregado over 5 years ago in reply to Rakesh Rajbhar

Guru 86755 points

Hi,

If you are using the Launchpad, remove all jumpers. Close UART if its open, Shutdown the SPI External Flash, then power the board externally.

If its just the CC2642R circuitry you can achieve Standby and Shutdown current consumption according to the datasheet. If you add I2C and SPI interfaces to the CC2642R then the current consumption will be higher.

-kel

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CCS/CC2642R: Not Going in sleep