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5 Nordic nRF5x Segger J-Link
14 * Segger J-Link firmware and desktop tools
16 * Mass Storage device for drag-and-drop image flashing
21 Segger J-Link Software Installation
24 To install the J-Link Software and documentation pack, follow the steps below:
26 #. Download the appropriate package from the `J-Link Software and documentation pack`_ website
28 #. When connecting a J-Link-enabled board such as an nRF5x DK, PDK or dongle, a
31 nRF5x Command-Line Tools Installation
34 The nRF5x command-line Tools allow you to control your nRF5x device from the command line,
37 To install them, visit `nRF5x Command-Line Tools`_ and select your operating
49 to install the Segger J-Link Software and the nRF5x Command-Line Tools, follow the steps below:
51 * Connect the micro-USB cable to the nRF5x board and to your computer
54 .. code-block:: console
56    nrfjprog --eraseall -f nrf5<x>
58 Where ``<x>`` is either 1 for nRF51-based boards or 2 for nRF52-based boards
62 .. code-block:: console
64    nrfjprog --program outdir/<board>/zephyr.hex -f nrf5<x>
67 and ``<x>`` is either 1 for nRF51-based boards or 2 for nRF52-based boards
71 .. code-block:: console
73    nrfjprog --reset -f nrf5<x>
75 Where ``<x>`` is either 1 for nRF51-based boards or 2 for nRF52-based boards
80 **Important note**: An issue with Segger J-Link firmware on the nRF5x boards might cause
95 Note that re-login is required for this to take effect.
97 .. code-block:: bash
99    sudo usermod -a -G dialout `whoami`
101 Recent versions of `ModemManager send AT commands to TTY-like devices`_; this
107 .. code-block:: bash
115 .. code-block:: bash
117    sudo sh -c 'echo "ATTRS{idVendor}==\"1366\", ENV{ID_MM_DEVICE_IGNORE}=\"1\" " \
118      >> /etc/udev/rules.d/99-segger-modemmanager-blacklist.rules'
133 Due to a known issue in Segger's J-Link firmware, depending on your operating system
145 .. code-block:: bat
156 Segger's J-Link supports `Real-Time Tracing (RTT)`_, a technology that allows a terminal
163 .. code-block:: cfg
171    supports SEGGER J-Link RTT. This symbol is set automatically by the SoC
181 .. code-block:: cfg
191 * Open the "J-Link RTT Viewer" application
197   * RTT Control Block: Auto Detection
208   * RTT Control Block address: auto-detection
215 A Python RTT viewer tool can be found in the `pyrtt-viewer`_ GitHub repository.
220 Segger J-Link is compatible with `Segger Ozone`_, a visual debugger that can be obtained here:
231 Once configured, you can then use the File->Open menu to open the ``zephyr.elf``
237 .. target-notes::
239 .. _nRF5x Command-Line Tools: https://www.nordicsemi.com/Software-and-Tools/Development-Tools/nRF-C…
241 .. _Segger SAM3U Wiki: https://wiki.segger.com/index.php?title=J-Link-OB_SAM3U
242 .. _Real-Time Tracing (RTT): https://www.segger.com/jlink-rtt.html
243 .. _pyrtt-viewer: https://github.com/thomasstenersen/pyrtt-viewer
247 .. _ModemManager send AT commands to TTY-like devices: https://bugs.freedesktop.org/show_bug.cgi?id…
250 .. _J-Link Software and documentation pack: https://www.segger.com/jlink-software.html