The nrfjprog DLL is a Dynamic-Link Library that exports functions for programming and controlling Nordic Semiconductor SoCs. It lets developers create their own development tools for Nordic Semiconductor SoCs using the DLL's API.
The nrfjprog DLL comes as a 32- and a 64-bit Dynamic-Link Library depending on the version of nRF Command Line Tools you have installed. The DLL exports functions for programming and controlling SoCs through SEGGER J-Link programmers and debuggers.
Important: This version of the nrfjprog DLL has been developed and tested for the
bundled SEGGER software. It will most likely work with other versions of the SEGGER software, but
keep in mind that there could be major changes that break compatibility.