CC2640R2F: GapAdv_prepareLoadByBuffer / GapAdv_loadByBuffer potentially lockup whole system. watchdog not working in this case

Sam Lin46

Part Number: CC2640R2F

Hi All,

I tried to implement beacon with payload updated. I added a periodic timer to change payload with:

status = GapAdv_abortLoad();

status = GapAdv_prepareLoadByBuffer(&advData, FALSE);

// Load advertising data
status = GapAdv_loadByBuffer( sizeof(advData), &advData);

in periodic event.

it works fine at first. But sometimes after several hours (ex. 12 hours) the system lockup.

No ADV, no button pressed interrupt, set watchdog not triggered to reboot system.

I think there is something wrong in stack.

SDK:

simplelink_cc2640r2_sdk_2_30_00_28

BLE5 stack.

Is there any related issue reported ?

Thanks,

Sam

over 6 years ago

0 Ammar N over 6 years ago

TI__Mastermind 25810 points

Hey Sam,

What status was returned when the system locked up? Have you tried setting the freeOldData parameter to TRUE?

What project are you basing the code on? Can you provide some code snippets so that I may attempt to reproduce the issue on my end?

0 Sam Lin46 over 6 years ago in reply to Ammar N

Intellectual 430 points

Hi Ammar,

It's based on simple_peripheral example.
We added periodic timer to trigger the ADV update. (ex 1 sec period)

GapAdv_prepareLoadByBuffer(&advData, FALSE);
GapAdv_loadByBuffer( sizeof(advData), &advData);

When the issue happens it lockup system without return status.

Even watchdog set, it cannot recover it to reboot.
At the same time GPIO interrupt seems not working. (i linked the button interrupt to LED out)

It's risky for beacon type device.

WE use static allocated memory so we cannot set freeOldData to true.

BR,
Sam

0 Ammar N over 6 years ago in reply to Sam Lin46

TI__Mastermind 25810 points

Did you disable advertising before updating the payload? This is best practice to avoid unknown behavior.

Some more info is provided in the User's Guide here:

http://dev.ti.com/tirex/content/simplelink_cc26x2_sdk_2_30_00_34/docs/ble5stack/ble_user_guide/html/ble-stack-5.x/gap.html#changing-advertising-parameters

Let me know if that helps!

0 Sam Lin46 over 6 years ago in reply to Ammar N

Intellectual 430 points

Hi Sir,

yes I disabled ADV before updating.
The baseline is it should not lockup in anyway.
Please verify that since it's critical for long term use.

BR,
Sam

0 Ammar N over 6 years ago in reply to Sam Lin46

TI__Mastermind 25810 points

Thanks for the info. I am running your setup and will report back with the results on my end.

0 Ammar N over 6 years ago in reply to Ammar N

TI__Mastermind 25810 points

Hey Sam,

I ran a similar test overnight and it has been 12+ hours without issue. The only change I have not implemented was the GPIO interrupt with the watchdog.

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CC2640R2F: GapAdv_prepareLoadByBuffer / GapAdv_loadByBuffer potentially lockup whole system. watchdog not working in this case