DSP综合设计-IIR滤波器综合设计 浙江大学宁波理工学院DSP课程大

0,0xC0,0x00},//66

{0x00,0x01,0x0F,0x1F,0x1F,0x30,0x20,0x20,0x20,0x20,0x20,0x38,0x1F,0x0F,0x07,0x00},

/*-- 文字: . --*/

/*-- 宋体12; 此字体下对应的点阵为：宽x高=8x16 --*/

{0x00,0x00,0x30,0x30,0x38,0x08,0x88,0x88,0x88,0x88,0xD8,0xF8,0x70,0x20,0x00,0x00},//68

{0x00,0x00,0x18,0x18,0x38,0x20,0x21,0x21,0x21,0x21,0x21,0x3B,0x1E,0x1E,0x04,0x00},

/*-- 文字: . --*/

/*-- 宋体12; 此字体下对应的点阵为：宽x高=8x16 --*/

{0x00,0x00,0x70,0xF0,0xD8,0xC8,0x88,0x88,0x88,0x88,0x88,0x88,0xF8,0x70,0x20,0x00},//70

{0x00,0x08,0x1E,0x1E,0x33,0x21,0x21,0x21,0x21,0x21,0x23,0x23,0x1E,0x1E,0x0C,0x00},

/*-- 文字: . --*/

/*-- 宋体12; 此字体下对应的点阵为：宽x高=16x16 --*/

{0x00,0x80,0xC0,0xBC,0x84,0x84,0x84,0xF4,0x82,0x82,0x83,0x82,0x80,0xC0,0x80,0x00},//72 .

/*-- 文字:.--*/

/*-- 宋体12; 此字体下对应的点阵为：宽x高=16x16 --*/

{0x10,0x10,0xD0,0xFF,0x90,0x10,0xFC,0x84,0x84,0x84,0xF4,0x82,0x83,0xC2,0x80,0x00},//74 {.

/*-- 文字: . --*/

/*-- 宋体12; 此字体下对应的点阵为：宽x高=16x16 --*/

{0x04,0x84,0xE4,0x9C,0x86,0xC4,0x80,0xFC,0x84,0x84,0xF4,0x82,0x83,0xC2,0x80,0x00},//76 .

/*-- 文字: . --*/

/*-- 宋体12; 此字体下对应的点阵为：宽x高=8x16 --*/

{0x00,0x00,0xE0,0xF0,0xF0,0x18,0x08,0x08,0x08,0x08,0x08,0x38,0xF0,0xE0,0xC0,0x00},//78

{0x00,0x01,0x0F,0x1F,0x1F,0x30,0x20,0x20,0x20,0x20,0x20,0x38,0x1F,0x0F,0x07,0x00},

/*-- 文字: . --*/

/*-- 宋体12; 此字体下对应的点阵为：宽x高=8x16 --*/

{0x00,0x00,0x20,0x70,0x78,0x08,0x08,0x08,0x08,0x08,0x88,0xF8,0xF8,0x70,0x00,0x00},//80

{0x00,0x00,0x30,0x30,0x38,0x3C,0x34,0x36,0x32,0x33,0x31,0x31,0x30,0x38,0x08,0x00},

/*-- 文字: . --*/

/*-- 宋体12; 此字体下对应的点阵为：宽x高=8x16 --*/

{0x00,0x00,0x00,0x00,0x80,0x80,0x40,0x60,0x30,0xF0,0xF8,0xF8,0x00,0x00,0x00,0x00},//82

{0x00,0x00,0x06,0x07,0x05,0x04,0x24,0x24,0x24,0x3F,0x3F,0x3F,0x24,0x24,0x24,0x00},

{0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0}, //84

{0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0, 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0} //清空 };

unsigned int uWork;

int nCount,nCursorCount;

unsigned int nScanCode,nKeyCode,state; unsigned int cKey,tKey; main() {

nIn=0; nOut=0; fInput=fOutput=0; f2PI=2*PI;

fSignal1=PI*0.6; fSignal2=0.0;

fStepSignal1=2*PI/16; fStepSignal2=7*PI/8; state=4; tKey=0; cKey=tKey;

REGISTERCLKMD=0;

CTRGR=0; // 初始化ICETEK-CTR CTRGR=0x80; CTRGR=0;

CTRLR=0; // 关闭东西方向的交通灯 CTRLR=0x40; // 关闭南北方向的交通灯 TurnLcdOn(); // 打开显示 LcdCls(); // 清除显示内存

CTRLCDCMDR=LCDCMDSTARTLINE; // 设置显示起始行 CTRLCDCR=0;

tKey=port8002; // 清键盘缓冲区

//REGISTERCLKMD=0x1007; // 设DSP主频改为两倍PLL时钟=32MHz asm(\ssbx INTM\// 关中断，进行关键设置时不许打扰 port3004=0; // 使能XINT2

uWork=PMST; // 设置PMST寄存器 PMST =uWork&0xff; // 中断向量表起始地址=80H IMR = 4; // 使能XINT2 IFR = 4; // 清中断标志位 asm(\rsbx INTM\// 开中断 DisplayEnterSystem(); for (;;) {

switch(state) {

case 0:

if(display){ display=0; LcdCls(); }

break;

case 1:

if(display){ display=0; Display1(); }

fInput=InputWave(); fIn[nIn]=fInput; nIn++; nIn%=256;

fOutput=IIR(fH1,fA1,fB1); fOut[nOut]=fOutput;

nOut++; /* break point */ if ( nOut>=256 ) {

nOut=0; }

break;

case 2:

if(display){

display=0; Display2(); }

fInput=InputWave(); fIn[nIn]=fInput; nIn++; nIn%=256;

fOutput=IIR(fH2,fA2,fB2); fOut[nOut]=fOutput; nOut++; nOut%=256; /* break point */ break; case 3:

if(display){

display=0; Display3(); } break;

default:break; } }

}

float InputWave() {

for ( i=IIRNUMBER-1;i>0;i-- ) {

fXn[i]=fXn[i-1];

fYn[i]=fYn[i-1]; //输出也参加移位 }

fXn[0]=2*sin((double)fSignal1)/5+cos((double)fSignal2); fYn[0]=0.0;

fSignal1+=fStepSignal1;

if ( fSignal1>=f2PI ) fSignal1-=f2PI; fSignal2+=fStepSignal2;

if ( fSignal2>=f2PI ) fSignal2-=f2PI; return(fXn[0]); }

float IIR(float fHn[],float fAn[],float fBn[])

{

float fSum; fSum=0;

for(i=0;i

fSum+=(fXn[i]*fBn[i]); fSum+=(fYn[i]*fAn[i]); }

return(fSum); }

void LcdCls() {

int i,j;

port8001=LCDCMDSTARTLINE; LcdDelay(LCDDELAY); port8002=0;

LcdDelay(LCDDELAY); for ( i=0;i<8;i++ ) {

port8001=LCDCMDPAGE+i; LcdDelay(LCDDELAY); port8002=0;

LcdDelay(LCDDELAY);

port8001=LCDCMDSTARTCOLUMN; LcdDelay(LCDDELAY); port8002=0;

LcdDelay(LCDDELAY); for ( j=0;j<64;j++ ) {

port8003=0;

LcdDelay(LCDDELAY); port8002=0;

LcdDelay(LCDDELAY); }

port8001=LCDCMDPAGE+i; LcdDelay(LCDDELAY); port8002=0;

LcdDelay(LCDDELAY);

port8001=LCDCMDSTARTCOLUMN; LcdDelay(LCDDELAY); port8002=0;

LcdDelay(LCDDELAY); for ( j=0;j<64;j++ )

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