CMSIS DSP Lib
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Diff: cmsis_dsp/ControllerFunctions/arm_pid_reset_q31.c
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/cmsis_dsp/ControllerFunctions/arm_pid_reset_q31.c Wed Nov 28 12:30:09 2012 +0000 @@ -0,0 +1,57 @@ +/* ---------------------------------------------------------------------- +* Copyright (C) 2010 ARM Limited. All rights reserved. +* +* $Date: 15. February 2012 +* $Revision: V1.1.0 +* +* Project: CMSIS DSP Library +* Title: arm_pid_reset_q31.c +* +* Description: Q31 PID Control reset function +* +* Target Processor: Cortex-M4/Cortex-M3/Cortex-M0 +* +* Version 1.1.0 2012/02/15 +* Updated with more optimizations, bug fixes and minor API changes. +* +* Version 1.0.10 2011/7/15 +* Big Endian support added and Merged M0 and M3/M4 Source code. +* +* Version 1.0.3 2010/11/29 +* Re-organized the CMSIS folders and updated documentation. +* +* Version 1.0.2 2010/11/11 +* Documentation updated. +* +* Version 1.0.1 2010/10/05 +* Production release and review comments incorporated. +* +* Version 1.0.0 2010/09/20 +* Production release and review comments incorporated. +* ------------------------------------------------------------------- */ + +#include "arm_math.h" + + /** + * @addtogroup PID + * @{ + */ + +/** +* @brief Reset function for the Q31 PID Control. +* @param[in] *S Instance pointer of PID control data structure. +* @return none. +* \par Description: +* The function resets the state buffer to zeros. +*/ +void arm_pid_reset_q31( + arm_pid_instance_q31 * S) +{ + + /* Clear the state buffer. The size will be always 3 samples */ + memset(S->state, 0, 3u * sizeof(q31_t)); +} + +/** + * @} end of PID group + */