RE: Reset nrf52840 dongles nodes from a ble mesh

Hung Bui — Mon, 19 Sep 2022 12:10:16 GMT

Hi Carlos,

The challenge with the dongle (also the reason why we don't recommend it as a development platform) is that there isn't a straight forward way of erasing application data on the dongle or to reset it as it was new.
It's possible to use the bootloader to update new firmware. However, the bootloader doesn't have a function to clear application data which located right below the bootloader.

The easiest way to solving this is to solder a 10 pins header to P1 (the same header as in Debug OUT port and Debug IN port on the DK) , on the back side of the dongle. Then you can use the nRF52 DK to connect to it (using 10-pin cable ) and flash it as a normal dev kit.

If you don't have a spare 10 pins header, you can unsolder the Debug IN header on the DK and solder it on the dongle if you don't usually use the Debug IN feature.

Another option, if you don't want to solder the header on all 6 dongles is to create a application that erase all the application data (the provisioning data), then you can flash the mesh application after it has done that.