ST-link to CMSIS-DAP

[Jeflet]

Dear Team,

We have a few queries related to our latest IOT project with the following description.

Microcontroller - BlueNRG-M2SP

Environment - Keil uVision v5.28.0.0

Debugger/Programmer - ST link V2 (Dongle)

While working with AT commands and serial communication protocols, there had been difficulties in debugging.

On further research we came across the 'printf for STM32F0 Cortex-M0: Uses CoreSight DAP (Debug Access Port)' functionality. (Document attached).

We tried implementing the instructions but failed to obtain the expected response in the debugger window.

1. What could be the possible reasons and how can the issues be resolved?
2. Does the operation require conversion of ST-link to CMSIS-DAP JTAG/SWD Adapter?
3. If a conversion is needed, where can we find the information regarding the procedure?
4. Is there an issue with our approach to the BlueNRG module or is there a better way to programming BlueNRG?
5. How to use BlueNRG2-M2SP with CubeMX using ST-LINK without using a BLE expansion board setup?

Thank you