NRF52840 default bootloader?

[licalvin01]

Hello,

Do the micro controllers out of the box before installing onto a PCB already have a bootloader? What do I need to consider to be able to reprogram my MCU on the PCB board?

Thanks,

Calvin

[Håkon Alseth]

Hi,

 

There is no bootloader in the nRF5-series devices. They will need to be programmed using the SWD protocol.

To do this, you need to have VDD, GND, SWDIO, and SWDCLK routed on your board and connected to the appropriate pins on your SWD-capable debugger/programmer.

 

Kind regards,

Håkon

[licalvin01]

Is there a guide to programming a fresh bootloader to the NRF52840? If I were to upload a bitstream like blinky to a blank slate MCU, will the MCU perform blink?

[Håkon Alseth]

There are section in the intermediate course on our dev academy:

https://academy.nordicsemi.com/courses/nrf-connect-sdk-intermediate/lessons/lesson-8-bootloaders-and-dfu-fota/

 

However; I do recommend that you look into the fundamentals course first.

 

Kind regards,

Håkon