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Embedded Software and Motor Control Libraries for PXR40xx

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Function GDFLIB_FilterIIR1Init_F16<br />

4.9 Function GDFLIB_FilterIIR1Init_F16<br />

This function initializes the First order IIR filter buffers.<br />

4.9.1 Declaration<br />

void GDFLIB_FilterIIR1Init_F16(GDFLIB_FILTER_IIR1_T_F16 *const pParam);<br />

4.9.2 Arguments<br />

Table 4-9. GDFLIB_FilterIIR1Init_F16 arguments<br />

Type Name Direction Description<br />

GDFLIB_FILTER_IIR1_<br />

T_F16 *const<br />

4.9.3 Return<br />

Function returns no value.<br />

4.9.4 Description<br />

pParam input,<br />

output<br />

Pointer to filter structure with filter buffer <strong>and</strong> filter parameters.<br />

This function clears the internal buffers of a first order IIR filter. It shall be called after<br />

filter parameter initialization <strong>and</strong> whenever the filter initialization is required.<br />

Note<br />

This function shall not be called together with<br />

GDFLIB_FilterIIR1_F16 unless periodic clearing of filter<br />

buffers is required.<br />

4.9.5 Re-entrancy<br />

The function is re-entrant.<br />

<strong>Embedded</strong> <strong>Software</strong> <strong>and</strong> <strong>Motor</strong> <strong>Control</strong> <strong>Libraries</strong> <strong>for</strong> <strong>PXR40xx</strong>, Rev. 1.0<br />

172 Freescale Semiconductor, Inc.

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