222 lines
6.3 KiB
ReStructuredText
222 lines
6.3 KiB
ReStructuredText
.. _getting_started:
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Getting Started Guide
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#####################
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Use this guide to get started with your :ref:`Zephyr <introducing_zephyr>`
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development.
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Set Up the Development Environment
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**********************************
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The Zephyr project supports these operating systems:
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* Linux
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* Mac OS
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* Windows 8.1
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Use the following procedures to create a new development environment.
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.. toctree::
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:maxdepth: 1
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installation_linux.rst
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installation_mac.rst
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installation_win.rst
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Checking Out the Source Code Anonymously
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========================================
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The code is hosted at the Linux Foundation with a Gerrit backend that supports
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anonymous cloning via git.
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To clone the repository anonymously, enter:
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.. code-block:: console
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$ git clone https://gerrit.zephyrproject.org/r/zephyr zephyr-project
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You have successfully checked out a copy of the source code to your local
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machine.
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Once you're ready to start contributing, follow the steps to make yourself
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a Linux Foundation account at `Gerrit Accounts`_.
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.. _Gerrit Accounts: https://wiki.zephyrproject.org/view/Gerrit_accounts
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Building and Running an Application
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***********************************
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Using the 'Hello World' sample application as a base model, the following
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section will describe the pieces necessary for creating a Zephyr application.
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The processes to build and run a Zephyr application are the same across
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operating systems. Nevertheless, the commands needed do differ from one OS to
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the next. The following sections contain the commands used in a Linux
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development environment. If you are using Mac OS please use the appropriate
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commands for your OS.
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Building a Sample Application
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=============================
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To build an example application follow these steps:
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#. Make sure your environment is setup by exporting the following environment
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variables. When using the Zephyr SDK on Linux for example, type:
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.. code-block:: console
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$ export ZEPHYR_GCC_VARIANT=zephyr
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$ export ZEPHYR_SDK_INSTALL_DIR=<sdk installation directory>
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#. Navigate to the main project directory:
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.. code-block:: console
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$ cd zephyr-project
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#. Source the project environment file to set the project environtment
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variables:
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.. code-block:: console
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$ source zephyr-env.sh
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#. Build the example project, enter:
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.. code-block:: console
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$ cd $ZEPHYR_BASE/samples/hello_world
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$ make
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The above invocation of make will build the hello_world sample application
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using the default settings defined in the application's Makefile. You can
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build for a different board by defining the variable BOARD with one of the
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supported boards, for example:
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.. code-block:: console
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$ make BOARD=arduino_101
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For further information on the supported boards go see
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:ref:`here <board>`. Alternatively, run the following command to obtain a list
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of the supported boards:
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.. code-block:: console
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$ make help
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Sample projects for different features of the project are available at
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at :file:`$ZEPHYR_BASE/samples`.
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After building an application successfully, the results can be found in the
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:file:`outdir` sub-directory under the application root directory, in a
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subdirectory that matches the BOARD string.
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The ELF binaries generated by the build system are named by default
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:file:`zephyr.elf`. This value can be overridden in the application
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configuration The build system generates different names for different use cases
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depending on the hardware and boards used.
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.. _third_party_x_compilers:
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Using Custom and 3rd Party Cross Compilers
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==========================================
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The Zephyr SDK is provided for convenience and ease of use. It provides
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cross-compilers for all ports supported by the Zephyr OS and does not require
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any extra flags when building applications or running tests.
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If you have a custom cross-compiler or if you wish to use a vendor provided SDK,
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follow the steps below to build with any custom or 3rd party cross-compilers:
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#. To avoid any conflicts with the Zephyr SDK, enter the following commands.
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.. code-block:: console
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$ unset ZEPHYR_GCC_VARIANT
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$ unset ZEPHYR_SDK_INSTALL_DIR
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#. We will use the `GCC ARM Embedded`_ compiler for this example, download the
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package suitable for your operating system from the `GCC ARM Embedded`_ website
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and extract it on your file system. This example assumes the compiler was
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extracted to: :file:`~/gcc-arm-none-eabi-5_3-2016q1/`.
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#. Navigate to the main project directory:
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.. code-block:: console
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$ cd zephyr-project
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#. Source the project environment file to set the project environment
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variables:
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.. code-block:: console
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$ source zephyr-env.sh
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#. Build the example project and make sure you supply the CROSS_COMPILE on the
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command line, enter:
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.. code-block:: console
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$ cd $ZEPHYR_BASE/samples/hello_world
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$ make CROSS_COMPILE=~/gcc-arm-none-eabi-5_3-2016q1/bin/arm-none-eabi- BOARD=arduino_due
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The above will build the sample using the toolchain downloaded from
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`GCC ARM Embedded`_.
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Alternatively, you can use the existing support for GCC ARM Embedded:
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.. code-block:: console
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$ export GCCARMEMB_TOOLCHAIN_PATH="~/gcc-arm-none-eabi-5_3-2016q1/"
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$ export ZEPHYR_GCC_VARIANT=gccarmemb
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$ cd zephyr-project
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$ source zephyr-env.sh
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$ cd $ZEPHYR_BASE/samples/hello_world
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$ make BOARD=arduino_due
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Running a Sample Application in QEMU
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====================================
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To perform rapid testing of an application in the development environment you
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can use the qemu emulation board configuration available for both X86 and ARM
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Cortex-M3 architectures. This can be easily accomplished by calling a special
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target when building an application that invokes QEMU once the build process is
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completed.
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To run an application using the x86 emulation board configuration (qemu_x86),
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type:
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.. code-block:: console
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$ make BOARD=qemu_x86 qemu
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To run an application using the ARM qemu_cortex_m3 board configuration, type:
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.. code-block:: console
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$ make BOARD=qemu_cortex_m3 qemu
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QEMU is not supported on all boards and SoCs. When developing for a specific
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hardware target you should always test on the actual hardware and should not
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rely on testing in the QEMU emulation environment only.
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.. _Linux Foundation ID website: https://identity.linuxfoundation.org
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.. _Gerrit: https://gerrit.zephyrproject.org/
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.. _GCC ARM Embedded: https://launchpad.net/gcc-arm-embedded
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