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<title>CMSIS DSP Software Library: CMSIS DSP Software Library</title>
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<li class="current"><a href="index.html"><span>Main Page</span></a></li>
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<li><a href="annotated.html"><span>Data Structures</span></a></li>
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<h1>CMSIS DSP Software Library </h1> </div>
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<h3 class="version">Version1.0.3 </h3><p><b>Introduction</b></p>
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<p>This user manual describes the CMSIS DSP software library, a suite of common signal processing functions for use on Cortex-M processor based devices.</p>
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<p>The library is divided into a number of modules each covering a specific category:</p>
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<ul>
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<li>Basic math functions</li>
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<li>Fast math functions</li>
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<li>Complex math functions</li>
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<li>Filters</li>
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<li>Matrix functions</li>
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<li>Transforms</li>
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<li>Motor control functions</li>
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<li>Statistical functions</li>
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<li>Support functions</li>
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<li>Interpolation functions</li>
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</ul>
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<p>The library has separate functions for operating on 8-bit integers, 16-bit integers, 32-bit integer and 32-bit floating-point values.</p>
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<p><b>Processor Support</b></p>
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<p>The library is completely written in C and is fully CMSIS compliant. High performance is achieved through maximum use of Cortex-M4 intrinsics.</p>
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<p>The supplied library source code also builds and runs on the Cortex-M3 processor, with the DSP intrinsics being emulated through software.</p>
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<p>A Cortex-M0 version of the library is also being developed ; updates on this activity will be made available shortly.</p>
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<p><b>Toolchain Support</b></p>
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<p>The library has been developed and tested with MDK-ARM version 4.12. The library is being tested in GCC and IAR toolchains and updates on this activity will be made available shortly.</p>
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<p><b>Using the Library</b></p>
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<p>The library installer contains prebuilt versions of the libraries in the <code>Lib</code> folder.</p>
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<ul>
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<li>arm_cortexM4_math.lib</li>
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<li>arm_cortexM3_math.lib</li>
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</ul>
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<p>The library functions are declared in the public file <code><a class="el" href="arm__math_8h.html">arm_math.h</a></code> which is placed in the <code>Include</code> folder. Simply include this file and link the appropriate library in the application and begin calling the library functions. The Library supports single public header file <code> <a class="el" href="arm__math_8h.html">arm_math.h</a></code> for Cortex-M4, Cortex-M3 and Cortex-M0. Define the appropriate pre processor MACRO ARM_MATH_CM4 or ARM_MATH_CM3 or ARM_MATH_CM0 depending on the target processor in the application.</p>
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<p><b>Examples</b></p>
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<p>The library ships with a number of examples which demonstrate how to use the library functions.</p>
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<p><b>Building the Library</b></p>
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<p>The library installer also contains project files to re build the library on MDK Tool chain in the <code>Lib</code> folder.</p>
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<ul>
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<li>arm_cortexM4_math.uvproj</li>
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<li>arm_cortexM3_math.uvproj</li>
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</ul>
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<p>The library supports size checking on the input and output matrices. To enable this feature, define the MACRO ARM_MATH_MATRIX_CHECK in pre processor settings in project options. The Library also supports rounding on support functions by using ARM_MATH_ROUNDING in pre processor settings</p>
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<p>The project can be built by opening the appropriate project in MDK-ARM 4.12 chain and defining the optional pre processor MACROs detailed above.</p>
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<p><b>Copyright Notice</b></p>
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<p>Copyright (C) 2010 ARM Limited. All rights reserved. </p>
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