The Neblina module uses two programming chains to program the on-board devices using the SWD protocol.
To simplify integration, we partner with I-SYST to integrate their modular programmer into our ProMotion development kit. If you are building a product based on the Neblina, you can simply route the programming pads to a pin header of your choice and leverage the same programming capabilities of the IDAP-M module that we used on the ProMotion to do debug or production programming.
You can get full details on the IDAP-LINK Programmer page.
IMPORTANT: Use the target Vcc reference of 1.8V when programming Neblina (i.e. connect TVcc). Neblina uses a 1.8V internal supply rail for maximum power efficiency.