nRF52840 DK (PCA10056) ; Wrong bootloader - how to rectify

CircuitPython on hardware including Adafruit's boards, and CircuitPython libraries using Blinka on host computers.

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mafiltenborg
 
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nRF52840 DK (PCA10056) ; Wrong bootloader - how to rectify

Post by mafiltenborg »

So I opened up this package with a factory-fresh nRF board (https://circuitpython.org/board/pca10056/) and started working my way through the 'Getting Started' guide (https://learn.adafruit.com/welcome-to-c ... cuitpython).

However, this board (and the two other ones I have) does not adhere to the manual. They fail to show up as neither <boardname>BOOT nor CIRCUITPY drives on my Win10/64 machine.
In stead I get a JLINK drive containing material on MBED and Segger.

I've tried dumping the adafruit-circuitpython-pca10056-en_GB-7.0.0.uf2 file on this drive. Nothing happens.
Dumping the adafruit-circuitpython-pca10056-en_GB-7.0.0.bin file on the drive makes it disappear and the JLINK drive reemerge unchanged.

How do I go about getting CircuitPython onto the board?

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danhalbert
 
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Re: nRF52840 DK (PCA10056) ; Wrong bootloader - how to recti

Post by danhalbert »

The PCA10056 is not one of our boards and does not come with the Adafruit nrF52 UF2-capable bootloader. You first need to install the bootloader. You can follow the directions in the README at https://github.com/adafruit/Adafruit_nRF52_Bootloader. You should also be able to install the bootloader with the bootloader installation features of the Arduino IDE. You will need to load the Adafruit nRF Board Support Package into Arduino: https://github.com/adafruit/Adafruit_nR ... stallation

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