General Filtering (FIR, IIR) functions.

Functions
static _iq	FirFilter (volatile _iq *in, _iq *b, unsigned int n)
static _iq	FirFilterV2 (volatile _iq *in, _iq *b, unsigned int n)
static _iq	IIRFilter (volatile _iq *in, volatile _iq *out, _iq *b, unsigned int nb, _iq *a, unsigned int na)
static void	ShiftRight (volatile _iq *in, unsigned int n)
static void	ShiftRightV2 (volatile _iq *in, unsigned int n)
static void	Zeros (volatile _iq *v, unsigned int n)
static void	MAvrgCoeffs (_iq *b, unsigned int n)

---

Function Documentation

static _iq FirFilter	(	volatile _iq *	in,
		_iq *	b,
		unsigned int	n
	)			[inline, static]

General FIR filter: out[0] = b[0]*in[0] + b[1]*in[1] + ... + b[n]*in[n]

Parameters:

	in	input vector. Vector MUST have size = n
	b	input coefficients vector. Vector MUST have size = n
	n	size of the filter

Definition at line 370 of file FilterAndRotations.h.

static _iq FirFilterV2	(	volatile _iq *	in,
		_iq *	b,
		unsigned int	n
	)			[inline, static]

General FIR filter: out[0] = b[0]*in[0] + b[1]*in[1] + ... + b[n]*in[n]

Parameters:

	in	input vector. Vector MUST have size = n
	b	input coefficients vector. Vector MUST have size = n
	n	size of the filter TODO: test

Definition at line 389 of file FilterAndRotations.h.

static _iq IIRFilter	(	volatile _iq *	in,
		volatile _iq *	out,
		_iq *	b,
		unsigned int	nb,
		_iq *	a,
		unsigned int	na
	)			[inline, static]

General IIR filter: out[0] = b[0]*in[0] + ... + b[nb]*in[nb] - (a[0]*out[0] + ... + a[na-1]*out[na])

Parameters:

	in	input vector. Vector MUST have size = nb
	out	output vector. After execution, out[0] contains the updated value
	b	input coefficients vector. Vector MUST have size = nb
	nb	size of input
	a	output coefficients vector. Vector MUST have size = na
	na	size of output

Definition at line 411 of file FilterAndRotations.h.

static void MAvrgCoeffs	(	_iq *	b,
		unsigned int	n
	)			[inline, static]

Initializes Moving Average Coefficients

Parameters:

	b	coefficients vector. Vector MUST have size = n
	n	size of the vector

Definition at line 473 of file FilterAndRotations.h.

static void ShiftRight	(	volatile _iq *	in,
		unsigned int	n
	)			[inline, static]

Shift vector right. After execution: in[n-1]=in[n-2],...,in[1]=in[0]

Parameters:

	in	input vector. Vector MUST have size = n
	n	size of the vector

Definition at line 426 of file FilterAndRotations.h.

static void ShiftRightV2	(	volatile _iq *	in,
		unsigned int	n
	)			[inline, static]

Shift vector right. After execution: in[n-1]=in[n-2],...,in[1]=in[0]

Parameters:

	in	input vector. Vector MUST have size = n
	n	size of the vector TODO: test

Definition at line 442 of file FilterAndRotations.h.

static void Zeros	(	volatile _iq *	v,
		unsigned int	n
	)			[inline, static]

Initializes vector v components to be zero

Parameters:

	v	input vector. Vector MUST have size = n
	n	size of the vector

Definition at line 458 of file FilterAndRotations.h.