803 lines
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803 lines
38 KiB
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<div id="projectname">RTOS_MSPM0
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 <span id="projectnumber">1.1</span>
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<div id="projectbrief">ECE445M starter code</div>
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<a href="#func-members">Functions</a> </div>
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<div class="title">LPF.h File Reference</div> </div>
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<p>implements four FIR low-pass filters
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<a href="#details">More...</a></p>
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<div class="textblock"><code>#include <stdint.h></code><br />
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<p><a href="_l_p_f_8h_source.html">Go to the source code of this file.</a></p>
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
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Functions</h2></td></tr>
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<tr class="memitem:af4847a68c9bdbec64472e73fab85dd40"><td class="memItemLeft" align="right" valign="top">uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="_l_p_f_8h.html#af4847a68c9bdbec64472e73fab85dd40">sqrt2</a> (uint32_t s)</td></tr>
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<tr class="memdesc:af4847a68c9bdbec64472e73fab85dd40"><td class="mdescLeft"> </td><td class="mdescRight">square root <a href="_l_p_f_8h.html#af4847a68c9bdbec64472e73fab85dd40">More...</a><br /></td></tr>
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<tr class="separator:af4847a68c9bdbec64472e73fab85dd40"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:af7d70f8afc107b2794bee1af527b24c5"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="_l_p_f_8h.html#af7d70f8afc107b2794bee1af527b24c5">LPF_Init</a> (int32_t initial, int32_t size)</td></tr>
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<tr class="memdesc:af7d70f8afc107b2794bee1af527b24c5"><td class="mdescLeft"> </td><td class="mdescRight">Initialize first LPF. <a href="_l_p_f_8h.html#af7d70f8afc107b2794bee1af527b24c5">More...</a><br /></td></tr>
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<tr class="separator:af7d70f8afc107b2794bee1af527b24c5"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a286c730f375884325d2bfac09b7d1319"><td class="memItemLeft" align="right" valign="top">int32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="_l_p_f_8h.html#a286c730f375884325d2bfac09b7d1319">LPF_Calc</a> (int32_t newdata)</td></tr>
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<tr class="memdesc:a286c730f375884325d2bfac09b7d1319"><td class="mdescLeft"> </td><td class="mdescRight">FIR low pass filter. <a href="_l_p_f_8h.html#a286c730f375884325d2bfac09b7d1319">More...</a><br /></td></tr>
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<tr class="separator:a286c730f375884325d2bfac09b7d1319"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a00d2283f02e11b4726c56f689afeca5d"><td class="memItemLeft" align="right" valign="top"><a id="a00d2283f02e11b4726c56f689afeca5d"></a>
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int32_t </td><td class="memItemRight" valign="bottom"><b>Noise1</b> (void)</td></tr>
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<tr class="separator:a00d2283f02e11b4726c56f689afeca5d"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ae48c26ec384164fefece850b6f1b89a7"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="_l_p_f_8h.html#ae48c26ec384164fefece850b6f1b89a7">LPF_Init2</a> (int32_t initial, int32_t size)</td></tr>
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<tr class="memdesc:ae48c26ec384164fefece850b6f1b89a7"><td class="mdescLeft"> </td><td class="mdescRight">Initialize second LPF. <a href="_l_p_f_8h.html#ae48c26ec384164fefece850b6f1b89a7">More...</a><br /></td></tr>
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<tr class="separator:ae48c26ec384164fefece850b6f1b89a7"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:acb5a9e86000732b7467e174f5be6bf45"><td class="memItemLeft" align="right" valign="top">int32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="_l_p_f_8h.html#acb5a9e86000732b7467e174f5be6bf45">LPF_Calc2</a> (int32_t newdata)</td></tr>
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<tr class="memdesc:acb5a9e86000732b7467e174f5be6bf45"><td class="mdescLeft"> </td><td class="mdescRight">FIR low pass filter. <a href="_l_p_f_8h.html#acb5a9e86000732b7467e174f5be6bf45">More...</a><br /></td></tr>
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<tr class="separator:acb5a9e86000732b7467e174f5be6bf45"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a3f39976e26c40a899c2c8cf5188600f8"><td class="memItemLeft" align="right" valign="top"><a id="a3f39976e26c40a899c2c8cf5188600f8"></a>
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int32_t </td><td class="memItemRight" valign="bottom"><b>Noise2</b> (void)</td></tr>
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<tr class="separator:a3f39976e26c40a899c2c8cf5188600f8"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:af7730e3d364813d54a35aa280233c3a2"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="_l_p_f_8h.html#af7730e3d364813d54a35aa280233c3a2">LPF_Init3</a> (int32_t initial, int32_t size)</td></tr>
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<tr class="memdesc:af7730e3d364813d54a35aa280233c3a2"><td class="mdescLeft"> </td><td class="mdescRight">Initialize third LPF. <a href="_l_p_f_8h.html#af7730e3d364813d54a35aa280233c3a2">More...</a><br /></td></tr>
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<tr class="separator:af7730e3d364813d54a35aa280233c3a2"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a565e5140ad720b069553344e61e872ef"><td class="memItemLeft" align="right" valign="top">int32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="_l_p_f_8h.html#a565e5140ad720b069553344e61e872ef">LPF_Calc3</a> (int32_t newdata)</td></tr>
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<tr class="memdesc:a565e5140ad720b069553344e61e872ef"><td class="mdescLeft"> </td><td class="mdescRight">FIR low pass filter. <a href="_l_p_f_8h.html#a565e5140ad720b069553344e61e872ef">More...</a><br /></td></tr>
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<tr class="separator:a565e5140ad720b069553344e61e872ef"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ada6fd6e7cdc0f6693eba470245f6576a"><td class="memItemLeft" align="right" valign="top"><a id="ada6fd6e7cdc0f6693eba470245f6576a"></a>
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int32_t </td><td class="memItemRight" valign="bottom"><b>Noise3</b> (void)</td></tr>
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<tr class="separator:ada6fd6e7cdc0f6693eba470245f6576a"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:afea37258c6ce396034e92806c7bb5b0b"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="_l_p_f_8h.html#afea37258c6ce396034e92806c7bb5b0b">LPF_Init4</a> (int32_t initial, int32_t size)</td></tr>
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<tr class="memdesc:afea37258c6ce396034e92806c7bb5b0b"><td class="mdescLeft"> </td><td class="mdescRight">Initialize third LPF. <a href="_l_p_f_8h.html#afea37258c6ce396034e92806c7bb5b0b">More...</a><br /></td></tr>
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<tr class="separator:afea37258c6ce396034e92806c7bb5b0b"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a3bc36e3502c277fc82493783b65a1edf"><td class="memItemLeft" align="right" valign="top">int32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="_l_p_f_8h.html#a3bc36e3502c277fc82493783b65a1edf">LPF_Calc4</a> (int32_t newdata)</td></tr>
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<tr class="memdesc:a3bc36e3502c277fc82493783b65a1edf"><td class="mdescLeft"> </td><td class="mdescRight">FIR low pass filter. <a href="_l_p_f_8h.html#a3bc36e3502c277fc82493783b65a1edf">More...</a><br /></td></tr>
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<tr class="separator:a3bc36e3502c277fc82493783b65a1edf"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a89184a3d1a0d14c3f601f624dacb1c36"><td class="memItemLeft" align="right" valign="top"><a id="a89184a3d1a0d14c3f601f624dacb1c36"></a>
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int32_t </td><td class="memItemRight" valign="bottom"><b>Noise4</b> (void)</td></tr>
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<tr class="separator:a89184a3d1a0d14c3f601f624dacb1c36"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a189fed12db9d7249f3143d88333408f8"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="_l_p_f_8h.html#a189fed12db9d7249f3143d88333408f8">LPF_Init5</a> (int32_t initial, int32_t size)</td></tr>
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<tr class="memdesc:a189fed12db9d7249f3143d88333408f8"><td class="mdescLeft"> </td><td class="mdescRight">Initialize fifth LPF. <a href="_l_p_f_8h.html#a189fed12db9d7249f3143d88333408f8">More...</a><br /></td></tr>
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<tr class="separator:a189fed12db9d7249f3143d88333408f8"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:aad7b30d13c51243a344d27bb469cce9e"><td class="memItemLeft" align="right" valign="top">int32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="_l_p_f_8h.html#aad7b30d13c51243a344d27bb469cce9e">LPF_Calc5</a> (int32_t newdata)</td></tr>
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<tr class="memdesc:aad7b30d13c51243a344d27bb469cce9e"><td class="mdescLeft"> </td><td class="mdescRight">FIR low pass filter. <a href="_l_p_f_8h.html#aad7b30d13c51243a344d27bb469cce9e">More...</a><br /></td></tr>
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<tr class="separator:aad7b30d13c51243a344d27bb469cce9e"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:adbbc01aa9e9af4ed229b133af5e9798f"><td class="memItemLeft" align="right" valign="top"><a id="adbbc01aa9e9af4ed229b133af5e9798f"></a>
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int32_t </td><td class="memItemRight" valign="bottom"><b>Noise5</b> (void)</td></tr>
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<tr class="separator:adbbc01aa9e9af4ed229b133af5e9798f"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ab5e8dc58b78c7d8f5d4cade640e81e49"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="_l_p_f_8h.html#ab5e8dc58b78c7d8f5d4cade640e81e49">LPF_Init6</a> (int32_t initial, int32_t size)</td></tr>
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<tr class="memdesc:ab5e8dc58b78c7d8f5d4cade640e81e49"><td class="mdescLeft"> </td><td class="mdescRight">Initialize Sixth LPF. <a href="_l_p_f_8h.html#ab5e8dc58b78c7d8f5d4cade640e81e49">More...</a><br /></td></tr>
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<tr class="separator:ab5e8dc58b78c7d8f5d4cade640e81e49"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a551ef67c8de4b59a80094d92b1d3642e"><td class="memItemLeft" align="right" valign="top">int32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="_l_p_f_8h.html#a551ef67c8de4b59a80094d92b1d3642e">LPF_Calc6</a> (int32_t newdata)</td></tr>
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<tr class="memdesc:a551ef67c8de4b59a80094d92b1d3642e"><td class="mdescLeft"> </td><td class="mdescRight">FIR low pass filter. <a href="_l_p_f_8h.html#a551ef67c8de4b59a80094d92b1d3642e">More...</a><br /></td></tr>
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<tr class="separator:a551ef67c8de4b59a80094d92b1d3642e"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ae9c505045a73f51415c9552eff843dec"><td class="memItemLeft" align="right" valign="top"><a id="ae9c505045a73f51415c9552eff843dec"></a>
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int32_t </td><td class="memItemRight" valign="bottom"><b>Noise6</b> (void)</td></tr>
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<tr class="separator:ae9c505045a73f51415c9552eff843dec"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a42d27ed4510d9a29f134758819d8d444"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="_l_p_f_8h.html#a42d27ed4510d9a29f134758819d8d444">LPF_Init7</a> (int32_t initial, int32_t size)</td></tr>
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<tr class="memdesc:a42d27ed4510d9a29f134758819d8d444"><td class="mdescLeft"> </td><td class="mdescRight">Initialize Seventh LPF. <a href="_l_p_f_8h.html#a42d27ed4510d9a29f134758819d8d444">More...</a><br /></td></tr>
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<tr class="separator:a42d27ed4510d9a29f134758819d8d444"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ad16c41b3ebe85c6f78912f68a4418f0d"><td class="memItemLeft" align="right" valign="top">int32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="_l_p_f_8h.html#ad16c41b3ebe85c6f78912f68a4418f0d">LPF_Calc7</a> (int32_t newdata)</td></tr>
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<tr class="memdesc:ad16c41b3ebe85c6f78912f68a4418f0d"><td class="mdescLeft"> </td><td class="mdescRight">FIR low pass filter. <a href="_l_p_f_8h.html#ad16c41b3ebe85c6f78912f68a4418f0d">More...</a><br /></td></tr>
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<tr class="separator:ad16c41b3ebe85c6f78912f68a4418f0d"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a4413a9f7d9497059dcb9fe780e6e012b"><td class="memItemLeft" align="right" valign="top"><a id="a4413a9f7d9497059dcb9fe780e6e012b"></a>
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int32_t </td><td class="memItemRight" valign="bottom"><b>Noise7</b> (void)</td></tr>
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<tr class="separator:a4413a9f7d9497059dcb9fe780e6e012b"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ab880f5c671175cde000252f8d38f8bda"><td class="memItemLeft" align="right" valign="top">int32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="_l_p_f_8h.html#ab880f5c671175cde000252f8d38f8bda">Median</a> (int32_t newdata)</td></tr>
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<tr class="memdesc:ab880f5c671175cde000252f8d38f8bda"><td class="mdescLeft"> </td><td class="mdescRight">Median filter. <a href="_l_p_f_8h.html#ab880f5c671175cde000252f8d38f8bda">More...</a><br /></td></tr>
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<tr class="separator:ab880f5c671175cde000252f8d38f8bda"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:aa49a8428e0c2e11918c5ef6b28bec9f8"><td class="memItemLeft" align="right" valign="top">int32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="_l_p_f_8h.html#aa49a8428e0c2e11918c5ef6b28bec9f8">Median5</a> (int32_t newdata)</td></tr>
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<tr class="memdesc:aa49a8428e0c2e11918c5ef6b28bec9f8"><td class="mdescLeft"> </td><td class="mdescRight">Median filter. <a href="_l_p_f_8h.html#aa49a8428e0c2e11918c5ef6b28bec9f8">More...</a><br /></td></tr>
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<tr class="separator:aa49a8428e0c2e11918c5ef6b28bec9f8"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a307298406cc61408f5a61874dc0422d2"><td class="memItemLeft" align="right" valign="top">int32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="_l_p_f_8h.html#a307298406cc61408f5a61874dc0422d2">Median7</a> (int32_t newdata)</td></tr>
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<tr class="memdesc:a307298406cc61408f5a61874dc0422d2"><td class="mdescLeft"> </td><td class="mdescRight">Median filter. <a href="_l_p_f_8h.html#a307298406cc61408f5a61874dc0422d2">More...</a><br /></td></tr>
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<tr class="memitem:aa66d6564f84ecb1e778aeb16183febff"><td class="memItemLeft" align="right" valign="top">int32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="_l_p_f_8h.html#aa66d6564f84ecb1e778aeb16183febff">Filter</a> (int32_t data)</td></tr>
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<tr class="memdesc:aa66d6564f84ecb1e778aeb16183febff"><td class="mdescLeft"> </td><td class="mdescRight">60-Hz notch high-Q, IIR filter <a href="_l_p_f_8h.html#aa66d6564f84ecb1e778aeb16183febff">More...</a><br /></td></tr>
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<tr class="separator:aa66d6564f84ecb1e778aeb16183febff"><td class="memSeparator" colspan="2"> </td></tr>
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</table>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<div class="textblock"><p>implements four FIR low-pass filters </p>
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<p>Finite length LPF<br />
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1) Size is the depth 2 to 16<br />
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2) y(n) = (sum(x(n)+x(n-1)+...+x(n-size-1))/size<br />
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3) To use a filter<br />
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a) initialize it once<br />
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b) call the filter at the sampling rate<br />
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</p><dl class="section version"><dt>Version</dt><dd>from TI-RSLK MAX v1.1 </dd></dl>
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<dl class="section author"><dt>Author</dt><dd>Daniel Valvano and Jonathan Valvano </dd></dl>
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<dl class="section copyright"><dt>Copyright</dt><dd>Copyright 2020 by Jonathan W. Valvano, <a href="#" onclick="location.href='mai'+'lto:'+'val'+'va'+'no@'+'ma'+'il.'+'ut'+'exa'+'s.'+'edu'; return false;">valva<span style="display: none;">.nosp@m.</span>no@m<span style="display: none;">.nosp@m.</span>ail.u<span style="display: none;">.nosp@m.</span>texa<span style="display: none;">.nosp@m.</span>s.edu</a>, </dd></dl>
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<dl class="section warning"><dt>Warning</dt><dd>AS-IS </dd></dl>
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<dl class="section note"><dt>Note</dt><dd>For more information see <a href="http://users.ece.utexas.edu/~valvano/">http://users.ece.utexas.edu/~valvano/</a> </dd></dl>
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<dl class="section date"><dt>Date</dt><dd>January 15, 2020 </dd></dl>
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</div><h2 class="groupheader">Function Documentation</h2>
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<a id="aa66d6564f84ecb1e778aeb16183febff"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#aa66d6564f84ecb1e778aeb16183febff">◆ </a></span>Filter()</h2>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">int32_t Filter </td>
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<td>(</td>
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<td class="paramtype">int32_t </td>
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<td class="paramname"><em>data</em></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>60-Hz notch high-Q, IIR filter </p>
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<p>60-Hz notch high-Q, alpha=0.99, IIR filter, assuming fs=1000 Hz.<br />
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y(n) = (256x(n) -503x(n-1) + 256x(n-2) + 498y(n-1)-251y(n-2))/256 (2k sampling)<br />
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y(n) = (256x(n) -476x(n-1) + 256x(n-2) + 471y(n-1)-251y(n-2))/256 (1k sampling) </p><dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">data</td><td>new ADC data </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>result filter output </dd></dl>
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</div>
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</div>
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<a id="a286c730f375884325d2bfac09b7d1319"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a286c730f375884325d2bfac09b7d1319">◆ </a></span>LPF_Calc()</h2>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">int32_t LPF_Calc </td>
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<td>(</td>
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<td class="paramtype">int32_t </td>
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<td class="paramname"><em>newdata</em></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>FIR low pass filter. </p>
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<p>First LPF, calculate one filter output<br />
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Called at sampling rate </p><dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">newdata</td><td>new ADC data </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>result filter output </dd></dl>
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</div>
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</div>
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<a id="acb5a9e86000732b7467e174f5be6bf45"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#acb5a9e86000732b7467e174f5be6bf45">◆ </a></span>LPF_Calc2()</h2>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">int32_t LPF_Calc2 </td>
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<td>(</td>
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<td class="paramtype">int32_t </td>
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<td class="paramname"><em>newdata</em></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>FIR low pass filter. </p>
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<p>Second LPF, calculate one filter output<br />
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Called at sampling rate </p><dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">newdata</td><td>new ADC data </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>result filter output </dd></dl>
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</div>
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</div>
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<a id="a565e5140ad720b069553344e61e872ef"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a565e5140ad720b069553344e61e872ef">◆ </a></span>LPF_Calc3()</h2>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">int32_t LPF_Calc3 </td>
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<td>(</td>
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<td class="paramtype">int32_t </td>
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<td class="paramname"><em>newdata</em></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>FIR low pass filter. </p>
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<p>Third LPF, calculate one filter output<br />
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Called at sampling rate </p><dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">newdata</td><td>new ADC data </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>result filter output </dd></dl>
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</div>
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</div>
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<a id="a3bc36e3502c277fc82493783b65a1edf"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a3bc36e3502c277fc82493783b65a1edf">◆ </a></span>LPF_Calc4()</h2>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">int32_t LPF_Calc4 </td>
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<td>(</td>
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<td class="paramtype">int32_t </td>
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<td class="paramname"><em>newdata</em></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>FIR low pass filter. </p>
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<p>Fourth LPF, calculate one filter output<br />
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Called at sampling rate </p><dl class="params"><dt>Parameters</dt><dd>
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|
<table class="params">
|
|
<tr><td class="paramname">newdata</td><td>new ADC data </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>result filter output </dd></dl>
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</div>
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</div>
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<a id="aad7b30d13c51243a344d27bb469cce9e"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#aad7b30d13c51243a344d27bb469cce9e">◆ </a></span>LPF_Calc5()</h2>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">int32_t LPF_Calc5 </td>
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<td>(</td>
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<td class="paramtype">int32_t </td>
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<td class="paramname"><em>newdata</em></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>FIR low pass filter. </p>
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<p>fifth LPF, calculate one filter output<br />
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Called at sampling rate </p><dl class="params"><dt>Parameters</dt><dd>
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|
<table class="params">
|
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<tr><td class="paramname">newdata</td><td>new ADC data </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>result filter output </dd></dl>
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</div>
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</div>
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<a id="a551ef67c8de4b59a80094d92b1d3642e"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a551ef67c8de4b59a80094d92b1d3642e">◆ </a></span>LPF_Calc6()</h2>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">int32_t LPF_Calc6 </td>
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<td>(</td>
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<td class="paramtype">int32_t </td>
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<td class="paramname"><em>newdata</em></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>FIR low pass filter. </p>
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<p>Sixth LPF, calculate one filter output<br />
|
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Called at sampling rate </p><dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
|
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<tr><td class="paramname">newdata</td><td>new ADC data </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>result filter output </dd></dl>
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</div>
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</div>
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<a id="ad16c41b3ebe85c6f78912f68a4418f0d"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ad16c41b3ebe85c6f78912f68a4418f0d">◆ </a></span>LPF_Calc7()</h2>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">int32_t LPF_Calc7 </td>
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<td>(</td>
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<td class="paramtype">int32_t </td>
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<td class="paramname"><em>newdata</em></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>FIR low pass filter. </p>
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<p>Seventh LPF, calculate one filter output<br />
|
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Called at sampling rate </p><dl class="params"><dt>Parameters</dt><dd>
|
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<table class="params">
|
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<tr><td class="paramname">newdata</td><td>new ADC data </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>result filter output </dd></dl>
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</div>
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</div>
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<a id="af7d70f8afc107b2794bee1af527b24c5"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#af7d70f8afc107b2794bee1af527b24c5">◆ </a></span>LPF_Init()</h2>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">void LPF_Init </td>
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<td>(</td>
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<td class="paramtype">int32_t </td>
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<td class="paramname"><em>initial</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">int32_t </td>
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<td class="paramname"><em>size</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Initialize first LPF. </p>
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<p>Initialize first LPF<br />
|
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Set all data to an initial value<br />
|
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</p><dl class="params"><dt>Parameters</dt><dd>
|
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<table class="params">
|
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<tr><td class="paramname">initial</td><td>value to preload into MACQ </td></tr>
|
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<tr><td class="paramname">size</td><td>depth of the filter, 2 to 16 </td></tr>
|
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>none </dd></dl>
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</div>
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</div>
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<a id="ae48c26ec384164fefece850b6f1b89a7"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ae48c26ec384164fefece850b6f1b89a7">◆ </a></span>LPF_Init2()</h2>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">void LPF_Init2 </td>
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<td>(</td>
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<td class="paramtype">int32_t </td>
|
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<td class="paramname"><em>initial</em>, </td>
|
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">int32_t </td>
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<td class="paramname"><em>size</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Initialize second LPF. </p>
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<p>Initialize second LPF<br />
|
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Set all data to an initial value<br />
|
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</p><dl class="params"><dt>Parameters</dt><dd>
|
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<table class="params">
|
|
<tr><td class="paramname">initial</td><td>value to preload into MACQ </td></tr>
|
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<tr><td class="paramname">size</td><td>depth of the filter, 2 to 16 </td></tr>
|
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</table>
|
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>none </dd></dl>
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</div>
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</div>
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<a id="af7730e3d364813d54a35aa280233c3a2"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#af7730e3d364813d54a35aa280233c3a2">◆ </a></span>LPF_Init3()</h2>
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<div class="memitem">
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<div class="memproto">
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<tr>
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<td class="memname">void LPF_Init3 </td>
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<td>(</td>
|
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<td class="paramtype">int32_t </td>
|
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<td class="paramname"><em>initial</em>, </td>
|
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</tr>
|
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<tr>
|
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<td class="paramkey"></td>
|
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<td></td>
|
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<td class="paramtype">int32_t </td>
|
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<td class="paramname"><em>size</em> </td>
|
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Initialize third LPF. </p>
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<p>Initialize third LPF<br />
|
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Set all data to an initial value<br />
|
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</p><dl class="params"><dt>Parameters</dt><dd>
|
|
<table class="params">
|
|
<tr><td class="paramname">initial</td><td>value to preload into MACQ </td></tr>
|
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<tr><td class="paramname">size</td><td>depth of the filter, 2 to 16 </td></tr>
|
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</table>
|
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</dd>
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</dl>
|
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<dl class="section return"><dt>Returns</dt><dd>none </dd></dl>
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</div>
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</div>
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<a id="afea37258c6ce396034e92806c7bb5b0b"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#afea37258c6ce396034e92806c7bb5b0b">◆ </a></span>LPF_Init4()</h2>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">void LPF_Init4 </td>
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<td>(</td>
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<td class="paramtype">int32_t </td>
|
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<td class="paramname"><em>initial</em>, </td>
|
|
</tr>
|
|
<tr>
|
|
<td class="paramkey"></td>
|
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<td></td>
|
|
<td class="paramtype">int32_t </td>
|
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<td class="paramname"><em>size</em> </td>
|
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</tr>
|
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<tr>
|
|
<td></td>
|
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<td>)</td>
|
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<td></td><td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Initialize third LPF. </p>
|
|
<p>Initialize fourth LPF<br />
|
|
Set all data to an initial value<br />
|
|
</p><dl class="params"><dt>Parameters</dt><dd>
|
|
<table class="params">
|
|
<tr><td class="paramname">initial</td><td>value to preload into MACQ </td></tr>
|
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<tr><td class="paramname">size</td><td>depth of the filter, 2 to 16 </td></tr>
|
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</table>
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</dd>
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</dl>
|
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<dl class="section return"><dt>Returns</dt><dd>none </dd></dl>
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</div>
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</div>
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<a id="a189fed12db9d7249f3143d88333408f8"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a189fed12db9d7249f3143d88333408f8">◆ </a></span>LPF_Init5()</h2>
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<div class="memproto">
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<tr>
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<td class="memname">void LPF_Init5 </td>
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<td>(</td>
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<td class="paramtype">int32_t </td>
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<td class="paramname"><em>initial</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">int32_t </td>
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<td class="paramname"><em>size</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Initialize fifth LPF. </p>
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<p>Initialize fifth LPF<br />
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Set all data to an initial value<br />
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</p><dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">initial</td><td>value to preload into MACQ </td></tr>
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<tr><td class="paramname">size</td><td>depth of the filter, 2 to 16 </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>none </dd></dl>
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</div>
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</div>
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<a id="ab5e8dc58b78c7d8f5d4cade640e81e49"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ab5e8dc58b78c7d8f5d4cade640e81e49">◆ </a></span>LPF_Init6()</h2>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">void LPF_Init6 </td>
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<td>(</td>
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<td class="paramtype">int32_t </td>
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<td class="paramname"><em>initial</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">int32_t </td>
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<td class="paramname"><em>size</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Initialize Sixth LPF. </p>
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<p>Initialize Sixth LPF<br />
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Set all data to an initial value<br />
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</p><dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">initial</td><td>value to preload into MACQ </td></tr>
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<tr><td class="paramname">size</td><td>depth of the filter, 2 to 16 </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>none </dd></dl>
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</div>
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</div>
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<a id="a42d27ed4510d9a29f134758819d8d444"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a42d27ed4510d9a29f134758819d8d444">◆ </a></span>LPF_Init7()</h2>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">void LPF_Init7 </td>
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<td>(</td>
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<td class="paramtype">int32_t </td>
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<td class="paramname"><em>initial</em>, </td>
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</tr>
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<tr>
|
|
<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">int32_t </td>
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<td class="paramname"><em>size</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Initialize Seventh LPF. </p>
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<p>Initialize Seventh LPF<br />
|
|
Set all data to an initial value<br />
|
|
</p><dl class="params"><dt>Parameters</dt><dd>
|
|
<table class="params">
|
|
<tr><td class="paramname">initial</td><td>value to preload into MACQ </td></tr>
|
|
<tr><td class="paramname">size</td><td>depth of the filter, 2 to 16 </td></tr>
|
|
</table>
|
|
</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>none </dd></dl>
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</div>
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</div>
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<a id="ab880f5c671175cde000252f8d38f8bda"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ab880f5c671175cde000252f8d38f8bda">◆ </a></span>Median()</h2>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">int32_t Median </td>
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<td>(</td>
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<td class="paramtype">int32_t </td>
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<td class="paramname"><em>newdata</em></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Median filter. </p>
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<p>3-wide non recursive Median filter <br />
|
|
Called with new data at sampling rate </p><dl class="params"><dt>Parameters</dt><dd>
|
|
<table class="params">
|
|
<tr><td class="paramname">newdata</td><td>new ADC data </td></tr>
|
|
</table>
|
|
</dd>
|
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>result filter output </dd></dl>
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</div>
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</div>
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<a id="aa49a8428e0c2e11918c5ef6b28bec9f8"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#aa49a8428e0c2e11918c5ef6b28bec9f8">◆ </a></span>Median5()</h2>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">int32_t Median5 </td>
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<td>(</td>
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<td class="paramtype">int32_t </td>
|
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<td class="paramname"><em>newdata</em></td><td>)</td>
|
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<td></td>
|
|
</tr>
|
|
</table>
|
|
</div><div class="memdoc">
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<p>Median filter. </p>
|
|
<p>5-wide non recursive Median filter <br />
|
|
Called with new data at sampling rate </p><dl class="params"><dt>Parameters</dt><dd>
|
|
<table class="params">
|
|
<tr><td class="paramname">newdata</td><td>new ADC data </td></tr>
|
|
</table>
|
|
</dd>
|
|
</dl>
|
|
<dl class="section return"><dt>Returns</dt><dd>result filter output </dd></dl>
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|
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</div>
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</div>
|
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<a id="a307298406cc61408f5a61874dc0422d2"></a>
|
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<h2 class="memtitle"><span class="permalink"><a href="#a307298406cc61408f5a61874dc0422d2">◆ </a></span>Median7()</h2>
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<div class="memitem">
|
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<div class="memproto">
|
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<table class="memname">
|
|
<tr>
|
|
<td class="memname">int32_t Median7 </td>
|
|
<td>(</td>
|
|
<td class="paramtype">int32_t </td>
|
|
<td class="paramname"><em>newdata</em></td><td>)</td>
|
|
<td></td>
|
|
</tr>
|
|
</table>
|
|
</div><div class="memdoc">
|
|
|
|
<p>Median filter. </p>
|
|
<p>7-wide non recursive Median filter <br />
|
|
Called with new data at sampling rate </p><dl class="params"><dt>Parameters</dt><dd>
|
|
<table class="params">
|
|
<tr><td class="paramname">newdata</td><td>new ADC data </td></tr>
|
|
</table>
|
|
</dd>
|
|
</dl>
|
|
<dl class="section return"><dt>Returns</dt><dd>result filter output </dd></dl>
|
|
|
|
</div>
|
|
</div>
|
|
<a id="af4847a68c9bdbec64472e73fab85dd40"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#af4847a68c9bdbec64472e73fab85dd40">◆ </a></span>sqrt2()</h2>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
|
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<td class="memname">uint32_t sqrt2 </td>
|
|
<td>(</td>
|
|
<td class="paramtype">uint32_t </td>
|
|
<td class="paramname"><em>s</em></td><td>)</td>
|
|
<td></td>
|
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</tr>
|
|
</table>
|
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</div><div class="memdoc">
|
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|
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<p>square root </p>
|
|
<p>Newton's method sqrt </p><dl class="params"><dt>Parameters</dt><dd>
|
|
<table class="params">
|
|
<tr><td class="paramname">s</td><td>is an integer </td></tr>
|
|
</table>
|
|
</dd>
|
|
</dl>
|
|
<dl class="section return"><dt>Returns</dt><dd>sqrt(s) is an integer </dd></dl>
|
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|
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</div>
|
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</div>
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