Fatal error on sleep 0x4001

[Doug_H]

I am running the SDK12.2.0 ble_app_template peripheral example with RTT Logging enabled. The example seems to be running OK, but it logs: APP_ERROR:ERROR:Fatal with the ID of 0x4001 whenever advertising times out and the sleep_mode_enter() function is called. What's going on here?

[Jørgen Holmefjord]

Is your application running fine until advertising timeout? Could you debug your application to see exactly which function returns the error code? I cannot find error 0x4001 in the documentation. Are you sure this is what you get?

[Doug_H]

Hi, I checked as you instructed. The error is occurring in main.c, line 429 when calling sv_power_system_off() the error code returned is 0x2006. What do you think is happening?

[Jørgen Holmefjord]

Most likely your chip is in debug mode. Try turning your board off and on again to see if this helps. Also, have a look at this answer.

[Doug_H]

I tried your suggestion, there is no change, still throwing the fatal error. I looked at the answer link you gave and I have the same question as the person who asked the linked question. How do I tell if I am in Debug mode? There is no DEBUG defined in the project and I am not running under the debugger! Also, I didn't answer your initial question. The application is running prefectly until sv_system_power_off(). It's the template application, and all I did was compile and load it into the PCA10040 board with no mods. I turned off UART logging and turned on RTT logging.

[Jørgen Holmefjord]

There is no way to check if the device is in debug mode. If you disconnect the programmer/debugger and power cycle the device after programming, it should not be in debug mode anymore.