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<div id="projectname">CMSIS-DSP
&#160;<span id="projectnumber">Version 1.5.2</span>
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<div id="projectbrief">CMSIS DSP Software Library</div>
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<div class="title">Revision History of CMSIS-DSP </div> </div>
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<div class="textblock"><table class="cmtable" summary="Revision History">
<tr>
<th>Version </th><th>Description </th></tr>
<tr>
<td>V1.5.2 </td><td>Modified <a class="el" href="arm__math_8h.html">arm_math.h</a><ul>
<li>fixed GNU Compiler specific diagnostics.</li>
<li>moved __SSAT and __USAT to CMSIS-Core </li>
</ul>
</td></tr>
<tr>
<td>V1.5.1 </td><td><p class="starttd">Changed copyright note.</p>
<p class="endtd">Added ARMv8M DSP libraries. </p>
</td></tr>
<tr>
<td>V1.5.0 </td><td><p class="starttd">Modified <a class="el" href="arm__math_8h.html">arm_math.h</a></p>
<ul>
<li>removed macro TABLE_SIZE.</li>
<li>changed preprocessor conditions to select functions instead of SIMD instruction for Cortex-M3.</li>
</ul>
<p class="endtd">Modified <a class="el" href="arm__const__structs_8c.html">arm_const_structs.c</a></p>
<ul>
<li>Added structure instances for the RFFT functions (equivalent to CFFT structures). </li>
</ul>
</td></tr>
<tr>
<td>V1.4.10 (no source code change [still labeled 1.4.5]) </td><td><p class="starttd">Modified <a class="el" href="arm__sin__cos__f32_8c.html">arm_sin_cos_f32.c</a></p>
<ul>
<li>corrected <a class="el" href="group__SinCos.html#ga4420d45c37d58c310ef9ae1b5fe58020">arm_sin_cos_f32()</a> for negative numbers smaller than e-4f.</li>
</ul>
<p class="endtd">Modified <a class="el" href="arm__var__f32_8c.html">arm_var_f32.c</a></p>
<ul>
<li>improved numerical stability for <a class="el" href="group__variance.html#ga393f26c5a3bfa05624fb8d32232a6d96">arm_var_f32()</a>. </li>
</ul>
</td></tr>
<tr>
<td>V1.4.9 (no source code change [still labeled 1.4.5]) 2016/09/26 </td><td><p class="starttd">Modified <a class="el" href="arm__mat__mult__fast__q15_8c.html">arm_mat_mult_fast_q15.c</a>, <a class="el" href="arm__mat__mult__fast__q31_8c.html">arm_mat_mult_fast_q31.c</a></p>
<ul>
<li>performance optimizations for <a class="el" href="group__MatrixMult.html#ga08f37d93a5bfef0c5000dc5e0a411f93">arm_mat_mult_fast_q15()</a> and <a class="el" href="group__MatrixMult.html#ga2785e8c1b785348b0c439b56aaf585a3">arm_mat_mult_fast_q31()</a>.</li>
</ul>
<p>Modified <a class="el" href="arm__conv__partial__q15_8c.html">arm_conv_partial_q15.c</a></p>
<ul>
<li>corrected <a class="el" href="group__PartialConv.html#ga209a2a913a0c5e5679c5988da8f46b03">arm_conv_partial_q15()</a> for Cortex-M7 based cores.</li>
</ul>
<p>Modified <a class="el" href="arm__conv__q15_8c.html">arm_conv_q15.c</a></p>
<ul>
<li>corrected <a class="el" href="group__Conv.html#gaccd6a89b0ff7a94df64610598e6e6893">arm_conv_q15()</a> for Cortex-M7 based cores.</li>
</ul>
<p class="endtd">Modified <a class="el" href="arm__correlate__q15_8c.html">arm_correlate_q15.c</a></p>
<ul>
<li>corrected <a class="el" href="group__Corr.html#ga5ec96b8e420d68b0e626df0812274d46">arm_correlate_q15()</a> for Cortex-M7 based cores. </li>
</ul>
</td></tr>
<tr>
<td>V1.4.8 (no source code change [still labeled 1.4.5]) 2015/12/18 </td><td><p class="starttd">Modified <a class="el" href="arm__math_8h.html">arm_math.h</a>, arm_bitreversal2.S</p>
<ul>
<li>corrected <a class="el" href="group__sin.html#gae164899c4a3fc0e946dc5d55555fe541" title="Fast approximation to the trigonometric sine function for floating-point data. ">arm_sin_f32()</a> for very small negative input values.</li>
</ul>
<p>Modified <a class="el" href="arm__sin__f32_8c.html">arm_sin_f32.c</a></p>
<ul>
<li>Updated Texas Instruments Arm Compiler support.</li>
</ul>
<p class="endtd">Updated documentation</p>
<ul>
<li>function <a class="el" href="group__RealFFT.html#ga180d8b764d59cbb85d37a2d5f7cd9799">arm_rfft_fast_f32</a>. </li>
</ul>
</td></tr>
<tr>
<td>V1.4.7 (no source code change [still labeled 1.4.5]) 2015/10/20 </td><td><p class="starttd">Modified <a class="el" href="arm__math_8h.html">arm_math.h</a></p>
<ul>
<li>Added explicit type casts to remove compiler warnings.</li>
<li>Supressed irrelevant warnings for toolchain GCC.</li>
</ul>
<p class="endtd">Updated documentation</p>
<ul>
<li>functions <a class="el" href="group__cos.html#gace15287f9c64b9b4084d1c797d4c49d8">arm_cos_f32</a>, <a class="el" href="group__sin.html#gae164899c4a3fc0e946dc5d55555fe541">arm_sin_f32</a> use table lookup combined with linear interpolation (since V1.4.2). This is now documented. </li>
</ul>
</td></tr>
<tr>
<td>V1.4.6 (no source code change [still labeled 1.4.5]) 2015/08/26 </td><td>Modified <a class="el" href="arm__math_8h.html">arm_math.h</a><ul>
<li>Updated function <a class="el" href="group__SQRT.html#ga697d82c2747a3302cf44e7c9583da2e8">arm_sqrt_f32</a> for use with IAR. </li>
</ul>
</td></tr>
<tr>
<td>V1.4.5 2015/03/19 </td><td><p class="starttd">Added support for the Cortex-M7 processor</p>
<p>Fixed bug in <a class="el" href="arm__mat__inverse__f32_8c.html">arm_mat_inverse_f32.c</a> and <a class="el" href="arm__mat__inverse__f64_8c.html">arm_mat_inverse_f64.c</a>. They weren't properly handling diagonal matrices.</p>
<p><a class="el" href="arm__cfft__f32_8c.html">arm_cfft_f32.c</a> - help documentation updated</p>
<p class="endtd">Updated documentation to show deprecated functions </p>
</td></tr>
<tr>
<td>V1.4.4 2014/07/31 </td><td><p class="starttd">Added the following new files:</p>
<ul>
<li><a class="el" href="arm__biquad__cascade__stereo__df2T__f32_8c.html">arm_biquad_cascade_stereo_df2T_f32.c</a></li>
<li><a class="el" href="arm__biquad__cascade__stereo__df2T__init__f32_8c.html">arm_biquad_cascade_stereo_df2T_init_f32.c</a></li>
<li><a class="el" href="arm__biquad__cascade__df2T__f64_8c.html">arm_biquad_cascade_df2T_f64.c</a></li>
<li><a class="el" href="arm__biquad__cascade__df2T__init__f64_8c.html">arm_biquad_cascade_df2T_init_f64.c</a></li>
<li><a class="el" href="arm__mat__inverse__f64_8c.html">arm_mat_inverse_f64.c</a></li>
<li><a class="el" href="arm__cfft__q15_8c.html">arm_cfft_q15.c</a></li>
<li><a class="el" href="arm__cfft__q31_8c.html">arm_cfft_q31.c</a></li>
</ul>
<p class="endtd">Optimizations to the following files:</p>
<ul>
<li><a class="el" href="arm__biquad__cascade__df2T__f32_8c.html">arm_biquad_cascade_df2T_f32.c</a></li>
<li><a class="el" href="arm__fir__f32_8c.html">arm_fir_f32.c</a></li>
<li><a class="el" href="arm__fir__fast__q31_8c.html">arm_fir_fast_q31.c</a></li>
<li><a class="el" href="arm__fir__q7_8c.html">arm_fir_q7.c</a></li>
<li><a class="el" href="arm__cfft__f32_8c.html">arm_cfft_f32.c</a></li>
<li><a class="el" href="arm__cfft__radix4__q31_8c.html">arm_cfft_radix4_q31.c</a></li>
<li><a class="el" href="arm__cfft__radix4__q15_8c.html">arm_cfft_radix4_q15.c</a></li>
<li><a class="el" href="arm__rfft__q31_8c.html">arm_rfft_q31.c</a></li>
<li><a class="el" href="arm__rfft__q15_8c.html">arm_rfft_q15.c</a> </li>
</ul>
</td></tr>
<tr>
<td>V1.4.3 2014/03/12 </td><td><p class="starttd">Undid changes to <a class="el" href="arm__biquad__cascade__df1__q31_8c.html">arm_biquad_cascade_df1_q31.c</a></p>
<p>Added support for COSMIC</p>
<p>Changed 'short' to 'q15_t' where appropriate</p>
<p>Fixed <a class="el" href="arm__conv__partial__fast__q15_8c.html">arm_conv_partial_fast_q15.c</a> for UNALIGNED_SUPPORT_DISABLE</p>
<p>Fixed <a class="el" href="arm__mat__cmplx__mult__q15_8c.html">arm_mat_cmplx_mult_q15.c</a> for UNALIGNED_SUPPORT_DISABLE</p>
<p>Fixed <a class="el" href="arm__conv__partial__opt__q7_8c.html">arm_conv_partial_opt_q7.c</a> for UNALIGNED_SUPPORT_DISABLE</p>
<p>Restored the internal fftlen of 16 to <a class="el" href="arm__rfft__fast__init__f32_8c.html">arm_rfft_fast_init_f32.c</a></p>
<p class="endtd">Updated core_xxx.h files to newer versions from ARM </p>
</td></tr>
<tr>
<td>V1.4.2 2013/10/16 </td><td><p class="starttd">Moved const structures from <a class="el" href="arm__const__structs_8h.html">arm_const_structs.h</a> to <a class="el" href="arm__const__structs_8c.html">arm_const_structs.c</a></p>
<p>Rfft_fast_f32 no longer allows fft length of 16 as it wouldn't have worked anyways</p>
<p>Partial convolution was producing the wrong results in some cases</p>
<p>arm_lms_q31 and q15 now saturate the results in the M0 code to match the M3 &amp; M4 code</p>
<p>Rfft_q15 and q31 had potential overflow issues resolved</p>
<p><a class="el" href="arm__biquad__cascade__df1__q31_8c.html">arm_biquad_cascade_df1_q31.c</a> had a typo which resulted in incorrect outputs</p>
<p>fast math sine and cosine now use linear interpolation</p>
<p>controller sin/cos now uses a more accurate interpolation algorithm</p>
<p>arm_mat_inverse was reading outside its input array</p>
<p>arm_cmplx_dot_prod was incorrect</p>
<p>switched some incorrect usages of __ssat to clip_q63_to_q31</p>
<p>changed var &amp; std q31 to downshift input data by 8</p>
<p>var q31 &amp; q15 no longer output larger data types</p>
<p><a class="el" href="arm__mat__cmplx__mult__q15_8c.html">arm_mat_cmplx_mult_q15.c</a> was done incorrectly for big vs little endian</p>
<p><a class="el" href="arm__mat__mult__q31_8c.html">arm_mat_mult_q31.c</a> was inconsistent with the other multiplies, so added saturation</p>
<p class="endtd">arm_conv_partial_q15 had an incorrect comparison between signed &amp; unsigned values </p>
</td></tr>
<tr>
<td>V1.4.1 2013/02/20 </td><td><p class="starttd">Updated licenses in headers to 2013</p>
<p>Fixed ALIGN4 macro in <a class="el" href="arm__math_8h.html">arm_math.h</a></p>
<p>Added files to Cortex-M0 projects so that all projects have same file list</p>
<p class="endtd">Fixed bugs in</p>
<ul>
<li>arm_biquad_cascade_d2fT_f32.c</li>
<li>arm_cfft_radix2_q31</li>
<li>arm_cfft_radix2_f32</li>
<li><a class="el" href="arm__math_8h.html">arm_math.h</a> (arm_pid functions)</li>
<li><a class="el" href="arm__iir__lattice__q31_8c.html">arm_iir_lattice_q31.c</a> </li>
</ul>
</td></tr>
<tr>
<td>V1.4.0 2013/01/09 </td><td><p class="starttd">Updated with more optimizations, bug fixes and new license information in headers</p>
<p>Optimized functions:</p>
<ul>
<li>arm_biquad_cascade_df2T_f32</li>
<li>arm_biquad_cascade_df1_q31</li>
<li>arm_fir_f32</li>
<li>arm_fir_fast_q31</li>
<li>arm_cfft_f32</li>
<li>arm_cfft_radix2_q31</li>
<li>arm_rfft_fast_f32 (new function)</li>
</ul>
<p>Fixed compiler warnings in <a class="el" href="arm__math_8h.html">arm_math.h</a> for comparing signed and unsigned ints</p>
<p>Fixed a saturation bug in arm_rms_q15</p>
<p>Simplified the code in arm_sin_cos_q31</p>
<p>Added a preprocessor directive to treat the Cortex M0+ just like the Cortex M0</p>
<p class="endtd">The following functions were deprecated and will be removed in a future version</p>
<ul>
<li>arm_cfft_radix2_f32</li>
<li>arm_cfft_radix2_init_f32</li>
<li>arm_cfft_radix4_f32</li>
<li>arm_cfft_radix4_init_f32 </li>
</ul>
</td></tr>
<tr>
<td>V1.3.0 </td><td><p class="starttd">Added CMSIS DSP Software Library</p>
<p>The CMSIS DSP Software Library is a suite of common signal processing functions targeted to Cortex-M processor based microcontrollers. Even though the code has been specifically optimized towards using the extended DSP instruction set of the Cortex-M4 processor, the library can be compiled for any Cortex-M processor.</p>
<p>For more information please see CMSIS DSP Library documentation. Added Cortex-M4 Core Support</p>
<p>Additional folder CM4, containing the Cortex-M4 core support files, has been added. CM0 CM3 CM4 CoreSupport DeviceSupport</p>
<p>New naming for Core Support Files</p>
<p class="endtd">The new Core Support Files are:</p>
<ul>
<li>core_cm#.h (# = 0, 3, 4)</li>
<li>core_cmFunc.h (Cortex-M Core Register access functions)</li>
<li>core_cmInstr.h (Cortex-M Core instructions)</li>
<li>core_cm4_simd.h (Cortex-M4 SIMD instructions) </li>
</ul>
</td></tr>
<tr>
<td>V1.2.0 </td><td><p class="starttd">Removed CMSIS Middelware packages</p>
<p>CMSIS Middleware is on hold from ARM side until a agreement between all CMSIS partners is found. SystemFrequency renamed to SystemCoreClock</p>
<p>The variable name SystemCoreClock is more precise than SystemFrequency because the variable holds the clock value at which the core is running. Changed startup concept</p>
<p>The old startup concept (calling SystemInit_ExtMemCtl from startup file and calling SystemInit from main) has the weakness that it does not work for controllers which need a already configuerd clock system to configure the external memory controller.</p>
<p>Changed startup concept</p>
<ul>
<li>SystemInit() is called from startup file before premain.</li>
<li>SystemInit() configures the clock system and also configures an existing external memory controller.</li>
<li>SystemInit() must not use global variables.</li>
<li>SystemCoreClock is initialized with a correct predefined value.</li>
<li>Additional function void SystemCoreClockUpdate (void) is provided.</li>
<li>SystemCoreClockUpdate() updates the variable SystemCoreClock and must be called whenever the core clock is changed.</li>
<li>SystemCoreClockUpdate() evaluates the clock register settings and calculates the current core clock.</li>
</ul>
<p>Advanced Debug Functions</p>
<p>ITM communication channel is only capable for OUT direction. To allow also communication for IN direction a simple concept is provided.</p>
<ul>
<li>Global variable volatile int ITM_RxBuffer used for IN data.</li>
<li>Function int ITM_CheckChar (void) checks if a new character is available.</li>
<li>Function int ITM_ReceiveChar (void) retrieves the new character.</li>
</ul>
<p>For detailed explanation see file CMSIS debug support.htm.</p>
<p>Core Register Bit Definitions</p>
<p>Files core_cm3.h and core_cm0.h contain now bit definitions for Core Registers. The name for the defines correspond with the Cortex-M Technical Reference Manual.</p>
<p>e.g. SysTick structure with bit definitions</p>
<div class="fragment"><div class="line"></div>
<div class="line"><span class="keyword">typedef</span> <span class="keyword">struct</span></div>
<div class="line">{</div>
<div class="line"> __IO uint32_t CTRL; </div>
<div class="line"> __IO uint32_t LOAD; </div>
<div class="line"> __IO uint32_t VAL; </div>
<div class="line"> __I uint32_t CALIB; </div>
<div class="line">} SysTick_Type;</div>
<div class="line"></div>
<div class="line"><span class="comment">/* SysTick Control / Status Register Definitions */</span></div>
<div class="line"><span class="preprocessor">#define SysTick_CTRL_COUNTFLAG_Pos 16 </span></div>
<div class="line"><span class="preprocessor">#define SysTick_CTRL_COUNTFLAG_Msk (1ul &amp;lt;&amp;lt; SysTick_CTRL_COUNTFLAG_Pos) </span></div>
<div class="line"><span class="preprocessor">#define SysTick_CTRL_CLKSOURCE_Pos 2 </span></div>
<div class="line"><span class="preprocessor">#define SysTick_CTRL_CLKSOURCE_Msk (1ul &amp;lt;&amp;lt; SysTick_CTRL_CLKSOURCE_Pos) </span></div>
<div class="line"><span class="preprocessor">#define SysTick_CTRL_TICKINT_Pos 1 </span></div>
<div class="line"><span class="preprocessor">#define SysTick_CTRL_TICKINT_Msk (1ul &amp;lt;&amp;lt; SysTick_CTRL_TICKINT_Pos) </span></div>
<div class="line"><span class="preprocessor">#define SysTick_CTRL_ENABLE_Pos 0 </span></div>
<div class="line"><span class="preprocessor">#define SysTick_CTRL_ENABLE_Msk (1ul &amp;lt;&amp;lt; SysTick_CTRL_ENABLE_Pos) </span></div>
<div class="line"><span class="preprocessor"></span><span class="comment">/* SysTick Reload Register Definitions */</span><span class="preprocessor"></span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#define SysTick_LOAD_RELOAD_Pos 0 </span></div>
<div class="line"><span class="preprocessor">#define SysTick_LOAD_RELOAD_Msk (0xFFFFFFul &amp;lt;&amp;lt; SysTick_LOAD_RELOAD_Pos) </span></div>
<div class="line"><span class="preprocessor"></span><span class="comment">/* SysTick Current Register Definitions */</span><span class="preprocessor"></span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#define SysTick_VAL_CURRENT_Pos 0 </span></div>
<div class="line"><span class="preprocessor">#define SysTick_VAL_CURRENT_Msk (0xFFFFFFul &amp;lt;&amp;lt; SysTick_VAL_CURRENT_Pos) </span></div>
<div class="line"><span class="preprocessor"></span><span class="comment">/* SysTick Calibration Register Definitions */</span><span class="preprocessor"></span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#define SysTick_CALIB_NOREF_Pos 31 </span></div>
<div class="line"><span class="preprocessor">#define SysTick_CALIB_NOREF_Msk (1ul &amp;lt;&amp;lt; SysTick_CALIB_NOREF_Pos) </span></div>
<div class="line"><span class="preprocessor">#define SysTick_CALIB_SKEW_Pos 30 </span></div>
<div class="line"><span class="preprocessor">#define SysTick_CALIB_SKEW_Msk (1ul &amp;lt;&amp;lt; SysTick_CALIB_SKEW_Pos) </span></div>
<div class="line"><span class="preprocessor">#define SysTick_CALIB_TENMS_Pos 0 </span></div>
<div class="line"><span class="preprocessor">#define SysTick_CALIB_TENMS_Msk (0xFFFFFFul &amp;lt;&amp;lt; SysTick_VAL_CURRENT_Pos) </span></div>
<div class="line"><span class="preprocessor"> </span><span class="comment">/* end of group CMSIS_CM3_SysTick */</span><span class="preprocessor"></span></div>
</div><!-- fragment --><p>DoxyGen Tags</p>
<p>DoxyGen tags in files core_cm3.[c,h] and core_cm0.[c,h] are reworked to create proper documentation using DoxyGen. Folder Structure</p>
<p class="endtd">The folder structure is changed to differentiate the single support packages. </p>
<pre class="fragment">CM0
CM3
CoreSupport
DeviceSupport
Vendor
Device
Startup
Toolchain
Toolchain
...
Device
...
Vendor
...
Example (optional)
Toolchain
Device
Device
...
Toolchain
...
Documentation
</pre> </td></tr>
<tr>
<td>V1.1.0 2012/02/15 </td><td>Updated with more optimizations, bug fixes and minor API changes. </td></tr>
<tr>
<td>V1.0.11 2011/10/18 </td><td>Bug Fix in conv, correlation, partial convolution. </td></tr>
<tr>
<td>V1.0.10 2011/7/15 </td><td>Big Endian support added and Merged M0 and M3/M4 Source code. </td></tr>
<tr>
<td>V1.0.3 2010/11/29 </td><td>Re-organized the CMSIS folders and updated documentation. </td></tr>
<tr>
<td>V1.0.2 2010/11/11 </td><td>Documentation updated. </td></tr>
<tr>
<td>V1.0.1 2010/10/05 </td><td>Production release and review comments incorporated. </td></tr>
<tr>
<td>V1.0.0 2010/09/20 </td><td>Production release and review comments incorporated. </td></tr>
<tr>
<td>V0.0.9 2010/08/27 </td><td>Added files:<ul>
<li><a class="el" href="arm__biquad__cascade__df1__fast__q15_8c.html">arm_biquad_cascade_df1_fast_q15.c</a></li>
<li><a class="el" href="arm__biquad__cascade__df1__fast__q31_8c.html">arm_biquad_cascade_df1_fast_q31.c</a></li>
<li><a class="el" href="arm__fir__fast__q31_8c.html">arm_fir_fast_q31.c</a></li>
<li><a class="el" href="arm__fir__fast__q15_8c.html">arm_fir_fast_q15.c</a> </li>
</ul>
</td></tr>
<tr>
<td>V0.0.7 2010/06/10 </td><td>Misra-C changes done </td></tr>
<tr>
<td>V0.0.5 2010/04/26 </td><td>incorporated review comments and updated with latest CMSIS layer </td></tr>
<tr>
<td>V0.0.3 2010/03/10 DP </td><td>Initial version </td></tr>
</table>
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