LAUNCHXL-CC1352R1: Power_shutdown() function with DMM is not working

James Mel

Part Number: LAUNCHXL-CC1352R1
Other Parts Discussed in Thread: ENERGYTRACE, CC1352R

Greetings,

I am using "dmm_wsnnode_remote_display" example from SDK "simplelink_cc13x2_sdk_2_20_00_71". I need to switch the device to shutdown mode and wake it up on a GPIO input (similar to "pinShutdown" example).

I tried to use the function "Power_shutdown(0, 0)" as the example, but the current consumption is still high! I use EnergyTrace on CCS 8.1.0.00011 to check the power consumption, and I found the below results:

The consumption in normal mode (device is advertising) is 6.972mJ in 10 seconds

The consumption in the shutdown mode (after calling the Power_shutdown() function) is 9.146mJ in the same duration!

which means the idle state in the DMM example consumes less power than the shutdown mode after calling the function! I tried to test manually with a multimeter (instead of EnergyTrace), and I found the same results.

1- What could cause this issue?

2- Does "Power_shutdown()" work normally with DMM examples? or there is some special handling needed for it?

* James *

over 5 years ago

0 James Mel over 5 years ago

Expert 1380 points

Greetings,

For clarification, I used EnergyTrace+ to check states while debugging, and those results can explain what I mean:

In normal mode (device is advertising), device states are 95.4% low power modes, and 4.6% Active mode in duration of 5 seconds:

If Power_shutdown() function is called, the device does not switch to any low power mode, although in debugging it sticks into the function

* James *

0 PM over 5 years ago in reply to James Mel

TI__Mastermind 27145 points

Hi,

I sent it to a concerned engineer. We will get back to you ASAP. Please bear with us.

Thanks,

0 FI over 5 years ago

TI__Mastermind 21140 points

Hi,

Does the pinShutDown example work on your board?

Thanks.

0 James Mel over 5 years ago in reply to FI

Expert 1380 points

Hi there,
I have tried pinShutDown example and it worked successfully on the LaunchXL-CC1352R1.

I want also to mention that I am using the old LaunchXL-CC1352R1 (XCC1352R1F3RGZR) (rev C), I am getting the new evaluation boards soon if the problem related to the old revision of evaluation board but I think that it is somehow SW related.

Thanks a lot
Regards
James

0 Severin Suveren over 5 years ago in reply to James Mel

TI__Mastermind 23730 points

Hi James,

We don't provide support for older revisions of CC1352R, only for current revision (rev. D). I can only suggest to get a CC1352R with the latest revision and upgrade the SDK version you are using to at least SDK version 3.20.

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LAUNCHXL-CC1352R1: Power_shutdown() function with DMM is not working