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NRF52840 boot/flash strategy

Mickael

Hi there,

I am considering the NRF52840 to build our new platform but I am struggling to find information about how the device Firmware is programmed.

Apart from SWD, can it be flashed over BLE, UART, USB?

I havent been able to find anything regarding this in the OPS...

thanks for you help, Mickael

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    Hi Bjorn,

    thanks a lot for your answer - I am starting to see clearer.

    Can you therefore confirm my understanding below:

    If looking at NRF52840 chip physical interfaces (as opposed to the DK's), the FW can be programmed via: SWD (directly using a J-Link or via P19 of the NRF52 DK thanks to the embedded J-LINK OB) ; BLE (as you mentionned) ; on the NRF52 DK documentation, I have also found evidences of UART and USB DFUs implementation but I am struggling to understand if they refer to the DK's board or the NRF's chip interfaces... Could you please clarify that for me?

    Thanks for your help, Mickael

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    Hi Bjorn,

    thanks a lot for your answer - I am starting to see clearer.

    Can you therefore confirm my understanding below:

    If looking at NRF52840 chip physical interfaces (as opposed to the DK's), the FW can be programmed via: SWD (directly using a J-Link or via P19 of the NRF52 DK thanks to the embedded J-LINK OB) ; BLE (as you mentionned) ; on the NRF52 DK documentation, I have also found evidences of UART and USB DFUs implementation but I am struggling to understand if they refer to the DK's board or the NRF's chip interfaces... Could you please clarify that for me?

    Thanks for your help, Mickael

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