nRF52840 Re-flash utilizing connected MCU via UART and GPIO boot pin in NCS

RE: nRF52840 Re-flash utilizing connected MCU via UART and GPIO boot pin in NCS

droidecahedron — Wed, 15 Mar 2023 14:07:18 GMT

Ok. I will begin poking through these samples. Thanks for the direction!

RE: nRF52840 Re-flash utilizing connected MCU via UART and GPIO boot pin in NCS

Sigurd — Wed, 15 Mar 2023 14:05:30 GMT

Hi,

We don't have any official support for this (as of today), but it should be feasible to implement. Here are some unofficial references:

https://github.com/hellesvik-nordic/samples_for_nrf_connect_sdk/tree/main/bootloader_samples/client_smp/smp_client_uart

https://github.com/nrfconnect/sdk-nrf/pull/8839

RE: nRF52840 Re-flash utilizing connected MCU via UART and GPIO boot pin in NCS

droidecahedron — Wed, 15 Mar 2023 13:17:05 GMT

Hello Sigurd, thank you for reaching out, I should have clarified.

It's an STM32 MCU running a separate overarching application, designated to be decoupled from the aforementioned samples. (Not a NCP architecture, no HCI)

RE: nRF52840 Re-flash utilizing connected MCU via UART and GPIO boot pin in NCS

Sigurd — Wed, 15 Mar 2023 13:15:25 GMT

Hi,

[quote user=""]I am trying to figure out bootload an nRF52840 Module from an external MCU that has only access to nRF52840DK's (one) GPIO and UART.[/quote]

What is this external MCU? nRF52,nRF91? or something Linux based?