Nrf52840 Custom Board Bootloader

Nrf52840 Custom Board Bootloader#248000

By thousand56 - Tue Mar 19, 2024 2:21 pm

- Tue Mar 19, 2024 2:21 pm #248000

Hello, I am developing a custom board based on the nrf52840 Mini. Is there somewhere I can find that bootloader to flash? I noticed it said it's based off of Adafruits UF2 bootloader but is sparkfuns available for download? Thanks.

Re: Nrf52840 Custom Board Bootloader#248021

By TS-Russell - Wed Mar 20, 2024 11:21 am

- Wed Mar 20, 2024 11:21 am #248021

Sort of....we have a guide to build the toolchain/firmware/bootloader https://learn.sparkfun.com/tutorials/nr ... e-nrf5-sdk which will refer to a few files housed here https://github.com/sparkfun/nRF52840_Br ... ree/master that should be most of what you're after

Re: Nrf52840 Custom Board Bootloader#248025

By thousand56 - Wed Mar 20, 2024 12:39 pm

- Wed Mar 20, 2024 12:39 pm #248025

That's great thanks!

Re: Nrf52840 Custom Board Bootloader#248114

By thousand56 - Mon Mar 25, 2024 12:41 pm

- Mon Mar 25, 2024 12:41 pm #248114

TS-Russell wrote: ↑Wed Mar 20, 2024 11:21 am Sort of....we have a guide to build the toolchain/firmware/bootloader https://learn.sparkfun.com/tutorials/nr ... e-nrf5-sdk which will refer to a few files housed here https://github.com/sparkfun/nRF52840_Br ... ree/master that should be most of what you're after

Coming back to this, I did specify but I was still intending to use Arduino. I found the Adafruit bootloader source code. Can I flash that UF2 bootloader or would I need to customize it to get my board to appear like the NRF52840 Mini?

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