I want to flash the CodeLess image on a DA14531MOD module mounted on a custom pcb.
To do so I tried to connect to the module via JTAG/SWD using the SmartSnippet Toolbox (V5.0.14).
I connected the VBAT, GND, SWDIO (J9/P0_10) and SWCLK (J10/P0_2) pins to my Segger J-Link debug probe and the moudle is powered up. The debug probe is connected via USB to the PC. Drivers are installed.
When I now start the SmartSnippet Toolbox (V5.0.14), select JTAG and click on detect I get the following notice:
"Detected device: Unknown chip on JTAG dongle  using Board [unknown].
The user manuals and the getting started guides for CodeLess on the Dialog website only describe how to connect to the development kit.
What am I doing wrong? How can i connect to the module on a custom pcb? Are there other ways to flash the CodeLess image for example over UART?
Are there any native bootloader routines on the module and how can I start/access them? Is there a default pin configuration delivered with the module for 2-wire UART?
Thanks in advance.