Softcore / Bootloader / JTAG programmer

[rshankle]

Hi Folks,

I'm new at using the nRF52832 chip.  I recently was handed a 3rd party board to evaluate and up until today I was able to use the nRF52 Development Kit to act as a JTAG programmer between SEGGER Embedded Studio and my 3rd party board.

Now when I try to do "Target->Connect J-Link"   instead of connecting to my board (via the dev kit), it throws up a GUI:

I'm figuring some how I hosed the bootloader and/or the Softcore running on the dev kit.  (I'm not sure if both are needed if I'm only using the Dev Kit as a JTAG programmer.)

Also, I've looked into finding bootloaders and it seems I have to recompile them before I can use them.  Are there pre-compiled bootloaders (for example what comes as default on the dev kits?)

Note I am able to hold the BOOT/RESET button and turn the board on and see it show up on my PC (before timing out).  What file should I copy to the Bootloader directory?

Thanks much for any help.  I'm evaluating a 3rd party board that we would like to put into production in the March time frame.

Bob 

[bjorn-spockeli]

Hi Bob, 

If the nRF52 DK shows up as a BOOTLOADER drive, then you can load the JLink Interface MCU firmware from the Download tab on the nRF52 DK product page, here is the link. 

Simply drag and drop the .bin file to the BOOTLOADER drive and then pwoer cycle the DK. 

Best regards
Bjørn

[rshankle]

Thank You so much!  Perfect.

: )

[JPV]

Hello, I have the same problem (brand new nrf52 DK), but when I drag and drop the file in the bootloader drive iI get the message in the image...

Is there something I can try?