CMSIS DSP Software Library: arm_pid_init_q31.c Source File Main Page Modules Data Structures Files Examples File List Globals arm_pid_init_q31.c Go to the documentation of this file.00001 /* ---------------------------------------------------------------------- 00002 * Copyright (C) 2010 ARM Limited. All rights reserved. 00003 * 00004 * $Date: 29. November 2010 00005 * $Revision: V1.0.3 00006 * 00007 * Project: CMSIS DSP Library 00008 * Title: arm_pid_init_q31.c 00009 * 00010 * Description: Q31 PID Control initialization function 00011 * 00012 * Target Processor: Cortex-M4/Cortex-M3 00013 * 00014 * Version 1.0.3 2010/11/29 00015 * Re-organized the CMSIS folders and updated documentation. 00016 * 00017 * Version 1.0.2 2010/11/11 00018 * Documentation updated. 00019 * 00020 * Version 1.0.1 2010/10/05 00021 * Production release and review comments incorporated. 00022 * 00023 * Version 1.0.0 2010/09/20 00024 * Production release and review comments incorporated. 00025 * ------------------------------------------------------------------- */ 00026 00027 #include "arm_math.h" 00028 00047 void arm_pid_init_q31( 00048 arm_pid_instance_q31 * S, 00049 int32_t resetStateFlag) 00050 { 00051 /* Derived coefficient A0 */ 00052 S->A0 = __QADD(__QADD(S->Kp, S->Ki), S->Kd); 00053 00054 /* Derived coefficient A1 */ 00055 S->A1 = -__QADD(__QADD(S->Kd, S->Kd), S->Kp); 00056 00057 /* Derived coefficient A2 */ 00058 S->A2 = S->Kd; 00059 00060 /* Check whether state needs reset or not */ 00061 if(resetStateFlag) 00062 { 00063 /* Clear the state buffer. The size will be always 3 samples */ 00064 memset(S->state, 0, 3u * sizeof(q31_t)); 00065 } 00066 00067 } 00068  All Data Structures Files Functions Variables Typedefs Enumerations Enumerator Defines Generated on Mon Nov 29 2010 17:19:57 for CMSIS DSP Software Library by  1.7.2

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