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| <h1>arm_fir_sparse_init_q7.c</h1> </div> |
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| <a href="arm__fir__sparse__init__q7_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* ---------------------------------------------------------------------- </span> |
| <a name="l00002"></a>00002 <span class="comment">* Copyright (C) 2010 ARM Limited. All rights reserved. </span> |
| <a name="l00003"></a>00003 <span class="comment">* </span> |
| <a name="l00004"></a>00004 <span class="comment">* $Date: 15. July 2011 </span> |
| <a name="l00005"></a>00005 <span class="comment">* $Revision: V1.0.10 </span> |
| <a name="l00006"></a>00006 <span class="comment">* </span> |
| <a name="l00007"></a>00007 <span class="comment">* Project: CMSIS DSP Library </span> |
| <a name="l00008"></a>00008 <span class="comment">* Title: arm_fir_sparse_init_q7.c </span> |
| <a name="l00009"></a>00009 <span class="comment">* </span> |
| <a name="l00010"></a>00010 <span class="comment">* Description: Q7 sparse FIR filter initialization function. </span> |
| <a name="l00011"></a>00011 <span class="comment">* </span> |
| <a name="l00012"></a>00012 <span class="comment">* Target Processor: Cortex-M4/Cortex-M3/Cortex-M0</span> |
| <a name="l00013"></a>00013 <span class="comment">* </span> |
| <a name="l00014"></a>00014 <span class="comment">* Version 1.0.10 2011/7/15 </span> |
| <a name="l00015"></a>00015 <span class="comment">* Big Endian support added and Merged M0 and M3/M4 Source code. </span> |
| <a name="l00016"></a>00016 <span class="comment">* </span> |
| <a name="l00017"></a>00017 <span class="comment">* Version 1.0.3 2010/11/29 </span> |
| <a name="l00018"></a>00018 <span class="comment">* Re-organized the CMSIS folders and updated documentation. </span> |
| <a name="l00019"></a>00019 <span class="comment">* </span> |
| <a name="l00020"></a>00020 <span class="comment">* Version 1.0.2 2010/11/11 </span> |
| <a name="l00021"></a>00021 <span class="comment">* Documentation updated. </span> |
| <a name="l00022"></a>00022 <span class="comment">* </span> |
| <a name="l00023"></a>00023 <span class="comment">* Version 1.0.1 2010/10/05 </span> |
| <a name="l00024"></a>00024 <span class="comment">* Production release and review comments incorporated. </span> |
| <a name="l00025"></a>00025 <span class="comment">* </span> |
| <a name="l00026"></a>00026 <span class="comment">* Version 1.0.0 2010/09/20 </span> |
| <a name="l00027"></a>00027 <span class="comment">* Production release and review comments incorporated </span> |
| <a name="l00028"></a>00028 <span class="comment">* </span> |
| <a name="l00029"></a>00029 <span class="comment">* Version 0.0.7 2010/06/10 </span> |
| <a name="l00030"></a>00030 <span class="comment">* Misra-C changes done </span> |
| <a name="l00031"></a>00031 <span class="comment">* ---------------------------------------------------------------------------*/</span> |
| <a name="l00032"></a>00032 |
| <a name="l00033"></a>00033 <span class="preprocessor">#include "<a class="code" href="arm__math_8h.html">arm_math.h</a>"</span> |
| <a name="l00034"></a>00034 |
| <a name="l00065"></a><a class="code" href="group___f_i_r___sparse.html#ga98f5c1a097d4572ce4ff3b0c58ebcdbd">00065</a> <span class="keywordtype">void</span> <a class="code" href="group___f_i_r___sparse.html#ga98f5c1a097d4572ce4ff3b0c58ebcdbd" title="Initialization function for the Q7 sparse FIR filter.">arm_fir_sparse_init_q7</a>( |
| <a name="l00066"></a>00066 <a class="code" href="structarm__fir__sparse__instance__q7.html" title="Instance structure for the Q7 sparse FIR filter.">arm_fir_sparse_instance_q7</a> * S, |
| <a name="l00067"></a>00067 uint16_t numTaps, |
| <a name="l00068"></a>00068 <a class="code" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263" title="8-bit fractional data type in 1.7 format.">q7_t</a> * pCoeffs, |
| <a name="l00069"></a>00069 <a class="code" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263" title="8-bit fractional data type in 1.7 format.">q7_t</a> * pState, |
| <a name="l00070"></a>00070 int32_t * pTapDelay, |
| <a name="l00071"></a>00071 uint16_t maxDelay, |
| <a name="l00072"></a>00072 uint32_t <a class="code" href="arm__fir__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>) |
| <a name="l00073"></a>00073 { |
| <a name="l00074"></a>00074 <span class="comment">/* Assign filter taps */</span> |
| <a name="l00075"></a>00075 S-><a class="code" href="structarm__fir__sparse__instance__q7.html#a54cdd27ca1c672b126c38763ce678b1c">numTaps</a> = numTaps; |
| <a name="l00076"></a>00076 |
| <a name="l00077"></a>00077 <span class="comment">/* Assign coefficient pointer */</span> |
| <a name="l00078"></a>00078 S-><a class="code" href="structarm__fir__sparse__instance__q7.html#a3dac86f15e33553e8f3e19e0d712bae5">pCoeffs</a> = pCoeffs; |
| <a name="l00079"></a>00079 |
| <a name="l00080"></a>00080 <span class="comment">/* Assign TapDelay pointer */</span> |
| <a name="l00081"></a>00081 S-><a class="code" href="structarm__fir__sparse__instance__q7.html#ac625393c84bc0342ffdf26fc4eba1ac1">pTapDelay</a> = pTapDelay; |
| <a name="l00082"></a>00082 |
| <a name="l00083"></a>00083 <span class="comment">/* Assign MaxDelay */</span> |
| <a name="l00084"></a>00084 S-><a class="code" href="structarm__fir__sparse__instance__q7.html#af74dacc1d34c078283e50f2530eb91df">maxDelay</a> = maxDelay; |
| <a name="l00085"></a>00085 |
| <a name="l00086"></a>00086 <span class="comment">/* reset the stateIndex to 0 */</span> |
| <a name="l00087"></a>00087 S-><a class="code" href="structarm__fir__sparse__instance__q7.html#a2d2e65473fe3a3f2b953b4e0b60824df">stateIndex</a> = 0u; |
| <a name="l00088"></a>00088 |
| <a name="l00089"></a>00089 <span class="comment">/* Clear state buffer and size is always maxDelay + blockSize */</span> |
| <a name="l00090"></a>00090 memset(pState, 0, (maxDelay + blockSize) * <span class="keyword">sizeof</span>(<a class="code" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263" title="8-bit fractional data type in 1.7 format.">q7_t</a>)); |
| <a name="l00091"></a>00091 |
| <a name="l00092"></a>00092 <span class="comment">/* Assign state pointer */</span> |
| <a name="l00093"></a>00093 S-><a class="code" href="structarm__fir__sparse__instance__q7.html#a18072cf3ef3666d588f0d49512f2b28f">pState</a> = pState; |
| <a name="l00094"></a>00094 |
| <a name="l00095"></a>00095 } |
| <a name="l00096"></a>00096 |
| </pre></div></div> |
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