Controller getting Reset after few minutes.

[Rajat]

Hi Everyone

I have been trying to use nrf52840 on a custom PCB . So far everything is working perfectly except only one single issue which is the controller gets reset and starts execution again from main function .

I am using freeRTOS with E-paper(SPI) external memory(QSPI) , few I2C/TWI sensors and Softdevice for BLE (S140) with SDK 15.0 on Segger EMbedded Studio IDE

What could be the reason for such abnormal behaviour?

Thanks!

Rajat

[Jørgen Holmefjord]

Hi,

Did you try debugging, to see if any functions return an error code?

Resetting the chip is the default recovery method when an error is reported from a function.

Best regards,
Jørgen

[Jørgen Holmefjord]

Could it be that you have a advertising timeout of 180 seconds (3 minutes), and that the application goes to system_off mode? Please check for places in your code putting the device in system off mode, or calls to reset functions. The application/chip will normally not reset on its own.

[Rajat]

That is a good idea, sure i will try this out. 

One question , Can i make this parameter zero instead of 180 seconds to make it never timeout?

[Jørgen Holmefjord]

Yes, you can.

[Rajat]

The issue is resolved now by changing the timeout parameter to zero but also i had to change the adv flag from BLE_GAP_ADV_FLAGS_LE_ONLY_LIMITED_DISC_MODE  to BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE.

Thanks!

Rajat