CC1311P3: CC1311P3

Prodigy 140 points

Part Number: CC1311P3

Tool/software:

Hi,

When wakeup from

Power_sleep(PowerCC26XX_STANDBY); by GPIO.

Do I need to init UART from beginning? or in other way? Do I need restart thread with uart read/write loop?

Regards

Marek

2 days ago

0 MM 2 days ago

Prodigy 140 points

Hi,

Maybe device do not wakeup fully after GPIO interrupt?, current rise from 70uA to 750uA.

Regards

Marek

0 MM 2 days ago in reply to MM

Prodigy 140 points

Try to wakeup with ClockP but same result as above, current rise from 70uA to 750uA and device looked as bricked. When it going to sleep finaly it go into

PowerCC26X2_sysCtrlStandby(retainCache);

0 Daniel Guarecuco Aguiar 2 days ago in reply to MM

TI__Intellectual 1510 points

Hi MM,

You should not need to run the entire UART init again.

Calling Power_sleep() manually is unadvised (See documentation: "This function must be called with interrupts disabled, and should not be called directly by the application, or by any drivers. This function does not check declared constraints; the policy function must check constraints before calling this function to initiate sleep.").

The transition to sleep should be managed by the power policy, and should go to sleep when it is idle. However, if UART RX is enabled, the device will not enter standby, you have to disable it using UART2_rxDisable().

Have you checked some of our driver examples: TI Drivers?

Can you explain what are you trying to achieve? How are you calling Power_sleep(), have you stated from one of the examples?

Best regards,

Daniel

0 Marie H 2 days ago

TI__Guru* 81751 points

Hi Marek,

No, if you're waking up from sleep you should not need to re initialize the uart. You should only need to start a new UART transaction.

I would recommend you to take a look at the UART2 Callback example:

https://dev.ti.com/tirex/explore/node?node=A__AMDZz7LaIS3zOyjPq1bJFQ__com.ti.SIMPLELINK_CC13XX_CC26XX_SDK__BSEc4rl__LATEST&placeholder=true

Cheers,

Marie H

0 MM 2 days ago in reply to Daniel Guarecuco Aguiar

Prodigy 140 points

Hi,

I looked in driver examples but not found one wihch cover:

Puting device into sleep (constantly) and wakeup by clock or gpio for 120 sec.

I am using just RF (continous RX) + Uart, I closed RF and call UART2_rxDisabled() and then call Power_sleep(), and current drop from 10mA to 80uA, unfortunatelly I cant wakeup from this state because current rise only to 750uA.

Can you advice example will explain me it better?

Regards

Marek

0 Marie H 2 days ago in reply to MM

TI__Guru* 81751 points

Hi Marek,

In stead of calling Power_sleep(), please try setting up a clock or timer and implement a callback event. Or even easier, just use sleep(120) (the same is used in the drivers/empty project).

As long as your power policy allows it, the device will go to sleep aka standby when nothing is happening.

Cheers,

Marie H

0 MM 2 days ago in reply to Marie H

Prodigy 140 points

will try it, I have default power policy

hope this is OK

Regards

Marek

0 Marie H 1 day ago in reply to MM

TI__Guru* 81751 points

Hi Marek,

Yes this will let the device go to standby when you call sleep() (unless the UART line is open).

If you just want to do some power measurements, you can run the empty() example and use Energy trace to get a feel for expected numbers. (And you will notice that the LEDs take a lot of power.)

https://dev.ti.com/tirex/explore/node?node=A__ABqN-IuE-ZpkVssE8pXIEA__com.ti.SIMPLELINK_CC13XX_CC26XX_SDK__BSEc4rl__LATEST&placeholder=true

https://dev.ti.com/tirex/explore/content/simplelink_cc13xx_cc26xx_sdk_8_31_00_11/docs/proprietary-rf/proprietary-rf-users-guide/energy-trace/energy-trace.html

Cheers,

Marie H