Failed to get Interrupt when application loaded by ZBL

[Alexbruliau]

Hello,

I have a simple single app running on the U54_1 that just echo back what is received on a UART channel 1. I want this application loaded by the ZBL to be executed from DDR4 . This simple app works when debugging in MODE0 but failed in MODE1 : I can't get any interrupt on this channel1... although the application mainFunction is executed.

1. Any IDEA ?
2. Could you please explain the difference between owner hart and secondary hart ?
3. Is there a way to debug (ZBL + app) ?

Here is my simple app source code

and the configuration to generate the payload.