CC2640R2F: CC2640R2F

Krishna priya Boban

Part Number: CC2640R2F

I am trying to enable sleep function as a task in BLE 5 Simple Peripheral project inorder to understand the current consumption during the module Standby in my custom board application. I am seeing an increase in current when it reach the sleep function. The Simple peripheral example is unmodified, just enabled UART . May I know how to resolve this.

Here is my function

static void SimplePeripheral_processSleep(){

UART_close(uartHandle);
Power_sleep(PowerCC26XX_STANDBY);

}

My project uses internal RCOSC_LF.

over 1 year ago

0 Guillaume over 1 year ago

TI__Expert 5150 points

Hi Krishna,

Thank you for reaching out,

First of all, the power drivers has the ability to always put the device in the right mode. Thus, is not necessary to force a sleep function in standby mode, the power drivers handle it by itself.

Which tool did you use to see this increasing current ? (Energy Trace) Do you see a peek of current when the function is called ? Increasing and stay at this value? What's the value of the current consumption ? (Can you share your test here)

regards,

0 Krishna priya Boban over 1 year ago in reply to Guillaume

Prodigy 220 points

I am using Ammeter to see the current change for the board. When the function calls, I see an increase in peak current and stay at this value. During normal application it is 1.6mA , the function shows a peak of 3.6mA.

0 Markel Robregado over 1 year ago in reply to Krishna priya Boban

Guru 86235 points

Hi,

You do not need to call this below to go to standby mode. By default the power manager takes care of going to standby mode. If there is no event the device goes to standby mode. Examples of events are advertising, applications events. What will add to the base current consumption during standby mode are open UART and external peripherals.

Power_sleep(PowerCC26XX_STANDBY);

-kel

0 Krishna priya Boban over 1 year ago in reply to Markel Robregado

Prodigy 220 points

hi , Okay now I get that, may I know what exactly do these functions does Power_shutdown(PowerCC26XX_ENTERING_SHUTDOWN, 120000); and Power_shutdown(PowerCC26XX_ENTERING_STANDBY, 120000);

0 Guillaume over 1 year ago in reply to Krishna priya Boban

TI__Expert 5150 points

Hi,

Can you provide me the SDK used for your project ?

The first parameter is corresponding of the power event. The second one is the shutdownTime (). You can find all the function details here :

Power.h File Reference (ti.com)

For additional details, please review sections §1.3 and §3.2 of the following guide :

SimpleLink SDK Power Management: MSP432, MSP432E4, CC13xx/CC26xx, and CC32xx (ti.com)

Regards,

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CC2640R2F: CC2640R2F