main_fir.c

TMS320VC5402 DSK的例程

#include "stdlib.h"
#include "stdio.h"
#include "typedef.h"
#include "Fir.h"

#define Length		80
#define FirOrder	22

void main()
{
	Word16 i ;
	Word16 Input[Length] ;
	Word16 Output[Length] ;
	Word16 Fir_Memory[FirOrder] ;
	Word16 Fir_Coef[FirOrder] = { 3405, 571, -1029, 267, 38, 130, -79, -539, 1032, 45 } ;


	//	产生随机输入数据, 以及随机的FIR滤波器状态

	Input[0] = 392 ;
	for( i = 1 ; i < Length ; i ++ )
	{
		Input[i] = (Word16)((51*(Input[i-1])+259)&0xffff) ;
	}

	Fir_Memory[0] = 9257 ;
	for( i = 1 ; i < FirOrder ; i ++ )
	{
		Fir_Memory[i] = (Word16)((17*(Fir_Memory[i-1])+328)&0xffff) ;
	}

	Fir( Input, Output, Fir_Coef, Fir_Memory, FirOrder, Length ) ;

	return ;
}