CCS/CC1352R: 3mA DC Current after 3minutes without advertising

Harald Ilg

Part Number: CC1352R

Tool/software: Code Composer Studio

Hy,

we develop a battery based device, that shall have a shipment mode: No advertising, as little as possible power consumption until a button is pressed. The mode is activated over a BLE command.

When this command is received, I call the following:

GapAdv_disable(advHandleLegacy);

Everything looks good, device stops advertising and has minimum power consumption. Wake up with button press works well.

But after approx 3min in this mode, power consumption jumps up to 3mA DC current. Device is still working: When I push the button in this mode, the devices starts advertising and has the expected power consumption.

We are puzzling about this issue since quite a while, without progress. Is 3mA an evidence for processor not falling asleep? In the fail state the 48Mhz quartz oscillates regularly.

Is there any hints that you could give us for futher investigation?

Our setup:

- custom hardware, CC1352R

- SDK simplelink_cc13x2_26x2_sdk_3_10_00_53

- Project based on dmm_154sensor_remote_display_app (BLE peripheral, 15.4 sensor)

- 15.4 is not activated

Any help appreciated

Harald

over 5 years ago

0 J Lindh over 5 years ago

TI__Guru 57865 points

Hi,

Are you able to catch this in debug, sounds like a software timer is triggered.

0 Harald Ilg over 5 years ago in reply to J Lindh

Genius 3060 points

Thanks for your quick response. I tried to add breakpoints on every possible timer callback and every task function, but no breakpoint is reached when this current jump happens. So I do not see the root cause in my own code.

Does DMM has its own task? I did not find the task function for that.

Regards

Harald

0 J Lindh over 5 years ago in reply to Harald Ilg

TI__Guru 57865 points

Hi Harald,

DMM should not have any tasks or timers related to it. When you state "15.4 is not activated", are you certain that there is nothing active in that side of the software that causes this?

0 J Lindh over 5 years ago in reply to J Lindh

TI__Guru 57865 points

Hi Harald,

Any further insight from your end?

I checked internally and the test team hasn't seen anything similar. Are you able to reproduce it on a TI launchpad?

0 Harald Ilg over 5 years ago in reply to J Lindh

Genius 3060 points

Hy,

thanks for your response. We never tried with eval board, I actually wouldn't even know how to measure current consumption.

We actually ran the software on different of our 1352 based PCBs, all show the same behaviour, so it is not a hardware issue.

We tried to port the project to SDK 3.30, there we don't see the effect any more, but come across another problem.

So, the issue is still open.

Regards

Harald

0 J Lindh over 5 years ago in reply to Harald Ilg

TI__Guru 57865 points

Hi Harald,

Good to hear, I'll close this thread so we can focus on you new issue.

Bluetooth®︎

Bluetooth forum

CCS/CC1352R: 3mA DC Current after 3minutes without advertising