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doc: Edit app development instructions.

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The instructions were made more to the point and clearer.
Optional and necessary steps are now easier to identify.

Change-Id: I3f4dc16b1dc0a7e64ae888ed050d266fa1d59645
Signed-off-by: L.S. Cook <leonax.cook@intel.com>
Signed-off-by: Rodrigo Caballero <rodrigo.caballero.abraham@intel.com>
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Rodrigo Caballero 2015-10-14 23:05:45 -05:00 • committed by Anas Nashif
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.. _apps_dev_process:
Application Development Workflow
################################
The application development workflow identifies procedures needed to create, build, and
run a |codename| microkernel or nanokernel application.
Before you build
----------------
* Check that your Linux host meets the minimum requirements specified in the |codename|
:ref:`quick_start`.
* Check that environment variables have been configured correctly as outlined
in :ref:`apps_common_procedures`.
Workflow
--------
1. Create a directory structure for your Zephyr application
a) :ref:`Creating an Application and Source Code Directory using the
CLI`
and add a Makefile
b) :ref:`Creating an Application Makefile`
2. Define the application's default kernel configuration using
:ref:`Defining the Application's Default Kernel Configuration`.
3. Define kernel configuration override options for the application
using :ref:`Overriding the Application's Default Kernel
Configuration`.
4. For a microkernel application, define objects as you develop code
using :ref:`Creating and Configuring an MDEF File for a Microkernel
Application`.
5. For all applications, define nanokernel objects as you need them in
code.
6. Develop source code and add source code files to the src directory.
* :ref:`Understanding Naming Conventions`
* :ref:`Understanding src Directory Makefile Requirements`
* :ref:`Adding Source Files and Makefiles to src Directories`
7. Build an application image.
* :ref:`Building an Application`
* :ref:`Rebuilding an Application`
8. To test the application image's functionality on simulated hardware
with QEMU, see :ref:`Running an Application`
9. To load an application image on a target hardware, see using :ref:`Platform`
documentation.