167 lines
5.0 KiB
ReStructuredText
167 lines
5.0 KiB
ReStructuredText
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.. _nxp_opensda:
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NXP OpenSDA
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###########
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Overview
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********
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`OpenSDA`_ is a serial and debug adapter that is built into several NXP
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evaluation boards. It provides a bridge between your computer (or other USB
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host) and the embedded target processor, which can be used for debugging, flash
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programming, and serial communication, all over a simple USB cable.
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The OpenSDA hardware features a Kinetis K2x microcontroller with an integrated
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USB controller. On the software side, it implements a mass storage device
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bootloader which offers a quick and easy way to load OpenSDA applications such
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as flash programmers, run-control debug interfaces, serial to USB converters,
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and more.
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Zephyr supports the following debug tools through OpenSDA:
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* :ref:`nxp_opensda_pyocd`
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* :ref:`nxp_opensda_jlink`
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.. _nxp_opensda_firmware:
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Program the Firmware
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====================
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Once you've selected which debug tool you wish to use, you need to program the
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associated OpenSDA firmware application to the OpenSDA adapter.
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Put the OpenSDA adapter into bootloader mode by holding the reset button while
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you power on the board. After you power on the board, release the reset button
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and a USB mass storage device called **BOOTLOADER** or **MAINTENANCE** will
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enumerate. Copy the OpenSDA firmware application binary to the USB mass storage
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device. Power cycle the board, this time without holding the reset button.
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.. _nxp_opensda_pyocd:
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pyOCD
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*****
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pyOCD is an Open Source python 2.7 based library for programming and debugging
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ARM Cortex-M microcontrollers using CMSIS-DAP.
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Host Tools and Firmware
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=======================
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Follow the instructions in `pyOCD Installation`_ to install the pyOCD flash
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tool and GDB server for your host computer.
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Select your board in `OpenSDA`_ and download the latest DAPLink firmware
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application binary. :ref:`nxp_opensda_firmware` with this application.
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Flashing
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========
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Use the CMake ``flash`` target with the argument ``OPENSDA_FW=daplink`` to
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build your Zephyr application, invoke the pyOCD flash tool and program your
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Zephyr application to flash. Some boards set the argument by default, so it is
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not always necessary to set explicitly.
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.. zephyr-app-commands::
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:zephyr-app: samples/hello_world
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:gen-args: -DOPENSDA_FW=daplink
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:goals: flash
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Debugging
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=========
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Use the CMake ``debug`` target with the argument ``OPENSDA_FW=daplink`` to
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build your Zephyr application, invoke the pyOCD GDB server, attach a GDB
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client, and program your Zephyr application to flash. It will leave you at a
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GDB prompt. Some boards set the argument by default, so it is not always
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necessary to set explicitly.
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.. zephyr-app-commands::
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:zephyr-app: samples/hello_world
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:gen-args: -DOPENSDA_FW=daplink
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:goals: debug
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.. _nxp_opensda_jlink:
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Segger J-Link
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*************
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Segger offers firmware running on the OpenSDA platform which makes OpenSDA
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compatible to J-Link Lite, allowing users to take advantage of most J-Link
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features like the ultra fast flash download and debugging speed or the
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free-to-use GDB Server, by using a low-cost OpenSDA platform for developing on
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evaluation boards.
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Host Tools and Firmware
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=======================
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Download and install the `Segger J-Link Software and Documentation Pack`_ to
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get the J-Link GDB server for your host computer.
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Select your board in `OpenSDA`_ and download the Segger J-Link firmware
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application binary. :ref:`nxp_opensda_firmware` with this application.
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Flashing
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========
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The Segger J-Link firmware does not support command line flashing, therefore
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the CMake ``flash`` target is not supported.
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Debugging
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=========
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Use the CMake ``debug`` target with the argument ``OPENSDA_FW=jlink`` to build
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your Zephyr application, invoke the J-Link GDB server, attach a GDB client, and
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program your Zephyr application to flash. It will leave you at a GDB prompt.
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Some boards set the argument by default, so it is not always necessary to set
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explicitly.
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.. zephyr-app-commands::
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:zephyr-app: samples/hello_world
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:gen-args: -DOPENSDA_FW=jlink
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:goals: debug
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Console
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=======
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If you configured your Zephyr application to use a UART console (most boards
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enable this by default), open a serial terminal (minicom, putty, etc.) with the
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following settings:
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- Speed: 115200
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- Data: 8 bits
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- Parity: None
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- Stop bits: 1
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If you configured your Zephyr application to use `Segger RTT`_ console instead,
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open telnet:
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.. code-block:: console
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telnet localhost 19021
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Trying 127.0.0.1...
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Connected to localhost.
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Escape character is '^]'.
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SEGGER J-Link V6.14b - Real time terminal output
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J-Link OpenSDA 2 compiled Feb 28 2017 19:27:57 V1.0, SN=621000000
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Process: JLinkGDBServer
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.. _OpenSDA:
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http://www.nxp.com/opensda
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.. _Segger J-Link OpenSDA:
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https://www.segger.com/opensda.html
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.. _Segger J-Link Software and Documentation Pack:
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https://www.segger.com/downloads/jlink
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.. _Segger RTT:
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https://www.segger.com/jlink-rtt.html
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.. _pyOCD Installation:
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https://github.com/mbedmicro/pyOCD#installation
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