![]() ![]() ![]() The nRF52840 Dongle is shipped with an Open USB bootloader which allows it to be programmed without the need for a debugger. Using the nRF Connect SDK the only adjustment you need to do to build an existing sample for the nRF52840 dongle is to specify that the board is nrf52840dongle_nrf52840. Note: If you are using the nRF Connect SDK the instructions on how to adapt a nRF5 SDK project is not valid. ![]() Lastly, it will describe how you can recover if you have put the nRF52840 Dongle is in a non-programmable state. It also describes how to program the dongle via Serial Wire Debug (SWD) using an external debugger (for instance a nRF52840 DK or nRF52 DK). ![]() This tutorial demonstrates how to adapt and program nRF5 SDK example applications to the nRF52840 dongle using USB DFU. The nRF52840 DK is a better choice for a stand-alone development platform. The lack of an onboard debugger means that common debugging techniques such as stepping through code or accessing registers are not possible unless you connect an external debugger. It can also be used for development, and easily programmed over USB DFU from nRF Connect Programmer. The nRF52840 Dongle is a superb companion for several nRF Connect for Desktop apps and is a good device for doing large scale mesh test setups and similar, with its low cost and small size. ![]()
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