nRF Command Line Tools

The nRF Command Line Tools are used for developing, programming, and debugging of Nordic Semiconductor's SoCs (System on Chip).

The nRF Command Line Tools consist of the following components:

• nrfjprog executable: The nrfjprog executable is a command line tool for programming Nordic Semiconductor SoCs through SEGGER J-Link programmers and debuggers.
• mergehex executable: The mergehex executable is a command line utility that enables you to combine several HEX files into a single file.
• nrfjprog DLL: 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.
• SEGGER J-Link software and documentation pack: Included in the Windows installer. For Linux and macOS, the SEGGER J-Link software and documentation pack must be installed separately.

The nRF Command Line Tools are available for the following operating systems:

• Windows 64- and 32-bit
• Linux 64- and 32-bit
• macOS

The nrfjprog utility is developed for use together with SEGGER debuggers, so the SEGGER software must also be installed. You should install the SEGGER version provided with the nRF Command Line Tools package, because this is the version that has been tested and verified to work. Using other versions might also work, but keep in mind that there might be major changes that could break compatibility. The SEGGER software is included in the Windows installer, but must be installed manually for Linux and macOS. The SEGGER software is not documented here.