SEGGER Embedded Studio and Monitor Mode Debugging

[RichieJH]

So I've been following these blogs on getting Monitor Mode Debugging working with SEGGER Embedded Studio: devzone.nordicsemi.com/.../ and devzone.nordicsemi.com/.../

These blogs state it is necessary to amend the start-up file to define DebugMon_Handler. There are included some amended start-up files with the blog posts but none for SEGGER Embedded Studio that I can see. One is labelled "arm_startup_nrf52.s" and the other "iar_startup_nrf52.s".

The start-up file for SES comes in the package which is installed by the package manager in SES. It is called "nrf_startup.s" and I appear to have the latest package installed. It looks so very different from the amended start-up files included in the blog posts above that I am not sure what needs to be changed to define DebugMon_Handler in it.

Could someone please provide further guidance?

[Michael Dietz]

arm_startup_nrf52.s and iar_startup_nrf52.s are the startup files for the Keil and IAR IDEs respectively, and will not work with Embedded Studio.

Use the nRF Package in Embedded Studio like you already are. You don't need to modify nrf_startup.s as this is not where the exceptions/interrupts are defined in Embedded Studio. You need to modify $(DeviceVectorsFile) which is in the same System Files/ folder as nRF_Startup.s. Basically all you need to do is make sure DebugMon_Handler is defined as the other ISRs. But here is my file, you can check against it or just use it: nrf52_Vectors.s

-Mike