The program runs well on the real machine nrf52840, but cannot be executed in debugging mode:

[gavin.rf]

1. The same program, same configuration, after flash to the chip, runs normally

2. Starting debug mode, unable to execute, as show in the figure

3. When different configurations are used, i.e. when debugging and optimization are not set, flash to the real machine nrf52840 and debugging mode all run well

4. Code size and flash space partitioning config, as shown in the figure

5. May I ask how to solve the key difference between debugging mode and flash to real machine operation when the same program and configuration has not been changed?

[Menon]

Hello,

I am not sure if I understand your issue very well. If you are trying to set breakpoints for debugging while there is a BLE activity in the application, then it might throw an error. Take a look at the below old threads:
https://devzone.nordicsemi.com/support-private/support/303901

https://devzone.nordicsemi.com/support-private/support/302644

Are you trying with any samples inside the SDK? If not, can you check if the issue persists with any of the samples from the SDK? I am not able to read what you have written inside the images as it is in Chinese, and it is not easy to translate from the image.

Kind Regards,

Abhijith