CC2640R2F: Unresponsive After Soft Reset / System Reset

Rahul

Part Number: CC2640R2F

Tool/software:

Hello,

We have designed a BLE module based on the CC2640R2F chipset and are facing an issue when performing a soft reset or system reset in our custom firmware / application

Expected Behaviour: Reset should restart the program execution from the beginning

Observed Behaviour: After executing System reset / soft reset the module becomes unresponsive

Stops advertising
UART functionality stops (no communication from the module)
Only a POR restores normal operation

Is there any known issue with system reset affecting BLE stack reinitialization ?

Are there any recommended steps to ensure application restart correctly after software reset?

Additional Info:

SDK Version: 4.40.0.10
Compiler Version: TI v18.12.2.LTS
We can reproduce the issue, but it occurs randomly. If you test for 2 to 4 hours, you will encounter the issue.

Please guide us on debugging and resolving this issue asap.

Thanks

6 months ago

0 Markel Robregado 6 months ago

Guru 86745 points

Hi,

Are you calling SysCtlSystemReset() or HAL_SYSTEM_RESET()? Where do you call it?

Have you debug this system reset call and confirmed the system reset happened or not?

have tried both before using simple peripheral running on the launchpad and it works.

-kel

0 Marie H 6 months ago

TI__Guru* 81321 points

Hi Rahul,

As Markel asks, please let us know which API and context you are using for the reset.

Is there any way to check the state of the unresponsive device. E.g. maybe the device was able to reset, but ran into a HW exception. Can you try attaching a debugger to the running target on an unresponsive device?

https://dev.ti.com/tirex/content/simplelink_cc2640r2_sdk_5_30_00_03/docs/blestack/ble_user_guide/html/ble-stack-3.x-guide/debugging-index.html#connect-the-debugger-to-a-running-target

Cheers,

Marie H

0 Rahul 6 months ago in reply to Marie H

Intellectual 995 points

Hi Marie, Vikas Chola

Here is the latest update, as communicated to Clement and the TI FAE via email:

We previously introduced a system reset when the peripheral stopped advertising. However, our primary concern is understanding why the module fails to advertise when the LE link terminates.

Currently, we have removed the system reset and are focused on identifying the root cause to fix the issue. We have already shared our source code with Clement via email.

Please let us know how we can proceed from here

Issue Description/Latest observation: BLE peripheral stops advertising after multiple disconnects and reconnects with the client device

Software Details:

CCS Tool version : CCS 9.1.0

SDK version : simplelink_cc2640r2_sdk_5_30_01_11

Compiler version : TI v18.12.2.LTS

Thanks

0 Marie H 6 months ago in reply to Rahul

TI__Guru* 81321 points

Hi Rahul, Vikas,

Could you resend this to me?

Could you also let me know whether this is blestack or ble5stack?

We should also check whether we can find this issue in the Known Issues of the Release Notes.

Cheers,

Marie H

Bluetooth®︎

Bluetooth forum

CC2640R2F: Unresponsive After Soft Reset / System Reset