Thread on nrf52840 dongle

[Gregory1992]

I would like to know if I can run Thread examples on nRF52840 USB dongle? Could someone provide instruction how to do this in a Windows environment?

Also, is there external debugging possibility for nrf52840 dongle?

[Jørgen Holmefjord]

Hi,

Yes, it is possible to run Thread examples on the nRF52840 Dongle. The NCP USB Bootloader example in SDK for Thread and Zigbee v2.0.0 works on the dongle out-of-the-box. Other examples should also work, but you need to move the application in Flash and RAM for it to not overlap with the USB Bootloader, located from 0x0 to 0x1000 in Flash and 0x20000000 to 0x020000008 in RAM. The following settings are used in SES project settings (Section Placement Macros):

FLASH_START=0x1000
FLASH_SIZE=0xfb000
RAM_START=0x20000008
RAM_SIZE=0x3fff8

The dongle can be debugged through the SWD interface, see the documentation.

Best regards,
Jørgen

[Jørgen Holmefjord]

The message in nRF Connect is normal when you flash an example that implements USB on the nRF IC. I was referring to the project settings in NCP example in Segger Embedded Studio. Changing the linker file used by GCC should give similar results. Which example did you build using GCC?

1. Yes, the dongle use our serial DFU solution over USB to flash the IC. It will not allow you to overwrite MBR/Bootloader.
2. Sorry, I meant to write MBR and not Bootloader. Bootloader is, as you correctly mention, placed close to top of flash.

[Mike Wazowski]

Hi,

NCP example runs perfect on Dongle after changing section placement and board header file, however the same does not apply to coap server and client examples. They compile just fine, but program does not seem to be running on dongle. Any tips to make it compatible?