Custom board with BL5340PA module from Ezurio

RE: Custom board with BL5340PA module from Ezurio

D.MASSIALA — Fri, 01 Aug 2025 08:59:07 GMT

ok thank you i gonna test simple nrf5340 example code to be sure the chip is working before starting the boot, thank you for your help, i will be back for boot question later

RE: Custom board with BL5340PA module from Ezurio

Vidar Berg — Fri, 01 Aug 2025 08:10:52 GMT

You can load what you want on the chip. It's optional to include a bootloader.

RE: Custom board with BL5340PA module from Ezurio

D.MASSIALA — Fri, 01 Aug 2025 08:02:09 GMT

Ok i think of quick test of the module BL5340PA can i flash a code without a boot on the soc ? i have seen that it is ok but need confirmation

RE: Custom board with BL5340PA module from Ezurio

Vidar Berg — Fri, 01 Aug 2025 07:46:59 GMT

The bootloader is supposed to be built as a part of the application project. This ensures that the application you build is compatible with the bootloader and have the correct signing keys. For more detals, please refer to the intermidate course you linked to earlier.

RE: Custom board with BL5340PA module from Ezurio

D.MASSIALA — Wed, 30 Jul 2025 09:04:41 GMT

ok thank you for the initial programing i have seen that to install the boot, i have to build the code available in my local hard drive in the path for my case C:\ncs\v2.9.0\nrf\samples\bootloader, is that the best way to do to install a bootloader ?

RE: Custom board with BL5340PA module from Ezurio

Vidar Berg — Wed, 30 Jul 2025 08:53:23 GMT

Yes, the initial programming must be done over the SWD interface using a programmer, but you can then program mcuboot with the "serial recovery" mode to support DFU over USB or UART as described in the course.

RE: Custom board with BL5340PA module from Ezurio

D.MASSIALA — Tue, 29 Jul 2025 14:54:00 GMT

Thank you for your reply, i have an NRF5340 DK and i connect it to my BLE module for SWD programing, to install a boot in my BL5340PA module can i use the DFU over UART example available in nordic academy course ?

https://academy.nordicsemi.com/courses/nrf-connect-sdk-intermediate/lessons/lesson-9-bootloaders-and-dfu-fota/topic/exercise-1-dfu-over-uart/

RE: Custom board with BL5340PA module from Ezurio

Vidar Berg — Tue, 29 Jul 2025 11:57:16 GMT

Hello,

Yes, according to their website this module does not come pre-programmed with any FW. You need a J-Link debug probe to program the chip through the SWD debug interface. For this, you can use a standalone Jlink programmer, or use a development kit that has a debug out port. To get started with building and programming of the FW I recommend you start here https://academy.nordicsemi.com/courses/nrf-connect-sdk-fundamentals/

Best regards,

Vidar