DSP实验项目

DSP实验项目

实验一、汇编语言与C语言的混合编程

实验内容：

1、验证ICETEK-VC5416-A评估板及教学实验箱实验指导书实验1.4；

2、用纯汇编语言编程实现内容1；

3、比较两种程序的代码长度和效率。

int x,y,z;

main()

{

x=3; y=17;

while ( 1 )

{

z=x+y;

} // 在此加软件断点

}

/*

int add(int a,int b)

{

return(a+b);

}

*/

实验二、指示灯实验

实验内容：

1、验证ICETEK-VC5416-A评估板及教学实验箱实验指导书实验3.1；

2、用纯汇编语言编程实现内容1；

3、比较两种程序的代码长度和效率。

// 为LED声明IO端口

ioport unsigned int port3002;

// LED 宏定义

#define LBDS port3002

// 延时和移位子函数声明

void Delay(int nDelay);

void ShiftToLeftAndRight(unsigned int nInit);

main()

{

unsigned int uLED[4]={1,2,4,8}; // 控制字，逐位置1: 0001B 0010B 0100B

1000B

int i;

for(;;)

{

for ( i=0;i<4;i++ )

{

LBDS=~uLED[i]; // 正向顺序送控制字

Delay(64); // 延时

}

for ( i=3;i>=0;i-- )

{

LBDS=~uLED[i]; // 反向顺序送控制字

Delay(64); // 延时

}

}

}

void Delay(int nDelay)

{

int i,j,k;

k=0;

for ( i=0;i

for ( j=0;j<1024;j++ )

k++;

}实验三、外中断实验

实验内容：

1、验证ICETEK-VC5416-A评估板及教学实验箱实验指导书实验3.4.2的程序；

2、修改实验程序完成按键中断控制的指示灯依次逐一点亮功能。

Xint.c程序：

#define IMR *(int *)0x0

#define IFR *(int *)0x1

#define PMST *(int *)0x1d

#define REGISTERCLKMD (*(unsigned int *)0x58)

ioport unsigned int port3002;

ioport unsigned int port3004;

ioport unsigned int port8007;

#define LED port3002

void interrupt xint2(void);

unsigned int uWork,nCount;

unsigned int nCountKey,nLS;

main()

{

nCount=0; nCountKey=0;

nLS=0x40;

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

port8007=0xc8;

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 I NTM"); // 开中断

while ( 1 );

}

void interrupt xint2(void) // XINT2中断服务程序

{

nCount++; nCount%=256; // 中断计数

if ( nCount%2==1 )

{

nCountKey++; nCountKey%=8;

nLS^=0x40;

uWork=nCountKey|nLS;

LED=~uWork; // 显示计数值

}

}

Xint.CMD程序：

-w

-stack 400h

-heap 100

-l rts.lib

MEMORY

{

PAGE 0:

VECT : o=80h,l=80h

PRAM : o=100h,l=1f00h

PAGE 1:

DRAM : o=2000h,l=1000h

}

SECTIONS

{

.text : {}> PRAM PAGE 0

.data : {}> PRAM PAGE 0

.cinit : {}> PRAM PAGE 0

.switch : {}> PRAM PAGE 0

.const : {}> DRAM PAGE 1

.bss : {}> DRAM PAGE 1

.stack : {}> DRAM PAGE 1

.vectors: {}> VECT PAGE 0

}

实验四、液晶显示器控制实验

实验内容：

1、验证ICETEK-VC5416-A评估板及教学实验箱实验指导书实验4.3.2的程序。

2、设计程序在液晶显示屏上显示计时时钟，精确到秒，形式为“时时：分分：秒秒”。

// 常量定义

#define LCDDELAY 1

#define LCDCMDTURNON 0x3f

#define LCDCMDTURNOFF 0x3e

#define LCDCMDSTARTLINE 0xc0

#define LCDCMDPAGE 0xb8

#define LCDCMDVERADDRESS 0x40

#define WAITSTATUS (*(unsigned int *)0x28)

// CTR扩展寄存器定义

ioport unsigned int port8000;

ioport unsigned int port8001;

ioport unsigned int port8002;

ioport unsigned int port8003;

ioport unsigned int port8004;

ioport unsigned int port8005;

ioport unsigned int port8007;

#define CTRGR port8000

#define CTRLCDCMDR port8001

#define CTRKEY port8001

#define CTRCLKEY port8002

#define CTRLCDCR port8002

#define CTRLCDLCR port8003

#define CTRLCDRCR port8004

#define CTRLA port8005

#define CTRLR port8007

void Delay(unsigned int nTime); // 延时函数

void TurnOnLCD(); // 打开显示

void LCDCLS(); // 清除屏幕显示内容

unsigned char ledkey[10][8]=

{

{0x00,0x00,0x7C,0x82,0x82,0x82,0x7C,0x00}, //0

{0x00,0x00,0x00,0x84,0xFE,0x80,0x00,0x00}, //1

{0x00,0x00,0x84,0xC2,0xA2,0x92,0x8C,0x00}, //2

{0x00,0x00,0x44,0x92,0x92,0x92,0x6C,0x00},

{0x00,0x00,0x30,0x28,0x24,0xFE,0x20,0x00},

{0x00,0x00,0x4E,0x92,0x92,0x92,0x62,0x00},

{0x00,0x00,0x7C,0x92,0x92,0x92,0x64,0x00},

{0x00,0x00,0x02,0xC2,0x32,0x0A,0x06,0x00},

{0x00,0x00,0x6C,0x92,0x92,0x92,0x6C,0x00},

{0x00,0x00,0x4C,0x92,0x92,0x92,0x7C,0x00}

};

main()

{

int i,nCount=0,nBW=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

TurnOnLCD(); // 打开显示

LCDCLS(); // 清除显示内存

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

CTRLCDCR=0;

for (;;)

{

CTRLCDCMDR=LCDCMDPAGE; // 设置操作页=0

Delay(LCDDELAY);

CTRLCDCR=0;

Delay(LCDDELAY);

CTRLCDCMDR=LCDCMDVERADDRESS; // 起始列=0

Delay(LCDDELAY);

CTRLCDCR=0;

Delay(LCDDELAY);

for ( i=0;i<8;i++ )

{

CTRLCDLCR=( nBW==0 )?(ledkey[nCount][i]):(~ledkey[nCount][i]); // 屏幕左侧第1至8行第i列赋值port8002=0;

// (赋值后当前操作列自动加1，所以不需设置)

Delay(LCDDELAY);

CTRLCDCR=0;

Delay(LCDDELAY);

}

Delay(512);

nCount++;

if ( nCount==10 )

{

nCount=0;

nBW=1-nBW;

}

}

}

void Delay(unsigned int nDelay)

{

int ii,jj,kk=0;

for ( ii=0;ii

{

for ( jj=0;jj<1024;jj++ )

{

kk++;

}

}

}

void TurnOnLCD()

{

CTRLCDCMDR=LCDCMDTURNON;

Delay(LCDDELAY);

CTRLCDCR=0;

Delay(LCDDELAY); CTRLCDCMDR=LCDCMDSTARTLINE;

Delay(LCDDELAY);

CTRLCDCR=0;

Delay(LCDDELAY);

}

void LCDCLS()

{

int i,j; CTRLCDCMDR=LCDCMDSTARTLINE;

Delay(LCDDELAY);

CTRLCDCR=0;

Delay(LCDDELAY);

for ( i=0;i<8;i++ )

{

CTRLCDCMDR=LCDCMDPAGE+i;

Delay(LCDDELAY);

CTRLCDCR=0;

Delay(LCDDELAY);

CTRLCDCMDR=LCDCMDVERADDRESS;

Delay(LCDDELAY);

CTRLCDCR=0;

Delay(LCDDELAY);

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

{

CTRLCDLCR=0;

Delay(LCDDELAY);

CTRLCDCR=0;

Delay(LCDDELAY);

}

CTRLCDCMDR=LCDCMDPAGE+i;

Delay(LCDDELAY);

CTRLCDCR=0;

Delay(LCDDELAY);

CTRLCDCMDR=LCDCMDVERADDRESS;

Delay(LCDDELAY);

CTRLCDCR=0;

Delay(LCDDELAY);

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

{

CTRLCDRCR=0;

Delay(LCDDELAY);

CTRLCDCR=0;

Delay(LCDDELAY);

}

}

}实验五、音频信号发生实验

实验内容：

1、验证ICETEK-VC5416-A评估板及教学实验箱实验指导书实验4.5.2的程序。

2、设计一个按键“弹琴”的程序

#include "scancode.h"

#define TIM *(int *)0x24

#define PRD *(int *)0x25

#define TCR *(int *)0x26

#define IMR *(int *)0x0

#define IFR *(int *)0x1

#define PMST *(int *)0x1d

#define SPSA0 *(unsigned int *)0x38

#define SPSD0 *(unsigned int *)0x39

#define SPSA1 *(unsigned int *)0x48

#define SPSD1 *(unsigned int *)0x49

#define nMusicNumber 40

#define REGISTERCLKMD (*(unsigned int *)0x58)

#define WAITSTATUS (*(unsigned int *)0x28)

ioport unsigned char port8000;

ioport unsigned char port8001;

ioport unsigned char port8002;

ioport unsigned char port8007;

#define CTRGR port8000

#define CTRKEY port8001

#define CTRCLKEY port8002

#define CTRLR port8007

void Delay(unsigned int nTime);

void interrupt time(void);

// 音符数据

unsigned int music[nMusicNumber][2]=

{

{182,480},{151,480},{135,480},{121,480},{135,480},{151,480},{182,480},{0, 480},

{182,480},{151,480},{135,480},{121,480},{135,480},{151,480},{182,480},{0, 480},

{182,240},{151,240},{135,240},{121,240},{135,240},{151,240},{182,240},{0, 240},

{182,240},{151,240},{135,240},{121,240},{135,240},{151,240},{182,240},{0, 240},

{182,1920},{151,1920},{135,1920},{121,1920},{135,1920},{151,1920},{182,1 920},{0,1920}

};

unsigned int uWork;

main()

{

unsigned int uWork1;

int j,nCount,nCount1,nScanCode;

nCount=nCount1=0;

REGISTERCLKMD=0;

CTRGR=0;

CTRGR=0x80;

CTRGR=8;

CTRLR=0; // 关闭东西方向的交通灯

CTRLR=0x40; // 关闭南北方向的交通灯

uWork1=CTRCLKEY; // 清除键盘缓冲区

for ( j=0;j

music[j][0]*=8;

SPSA0=1; // set McBSP0's SPCR2

uWork1=SPSD0;

uWork1&=0xfffe; // set XRST=0

SPSD0=uWork1;

SPSA0=0x0e; // set McBSP0's PCR

uWork1=SPSD0;

uWork1|=0x2020; // set XIOEN=1, Enable IO,DX for output SPSD0=uWork1;

uWork1= PMST;

PMST = uWork1&0xff;

IMR = 0x8;

TCR = 0x412;

TIM = 0;

PRD = music[nCount][0]; // 频率设置

TCR = 0x422;

IFR = 0x100;

asm(" rsbx I NTM");

j=0;

while ( j<1 )

{

nCount1=0;

nScanCode=CTRKEY; // 读扫描码

nScanCode&=0x0ff; // 低8位

uWork1=CTRCLKEY; // 清除键盘缓冲区

if ( nScanCode!=0 )

{

if ( nScanCode==SCANCODE_Enter ) break;

}

nCount1++;

Delay(music[nCount][1]*12); // 音长

nCount++;

if ( nCount>=nMusicNumber )

{

nCount=0; j++;

}

if ( music[nCount][0]==0 )

TCR=0x412; // 静音

else

{

PRD = music[nCount][0]; // 切换音符

TCR = 0x422;

}

}

}

void Delay(unsigned int nDelay)

{

int i,j,k=0;

for ( i=0;i

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

k++;

}

void interrupt time(void)

{

SPSA0=1; // set McBSP0's SPCR2

uWork=SPSD0;

uWork&=0xfffe; // set XRST=0

SPSD0=uWork;

SPSA0=0x0e; // set McBSP0's PCR

uWork=SPSD0;

uWork|=0x2000; // set XIOEN=1, Enable IO,DX for output

uWork^=0x20; // DX=^DX

SPSD0=uWork;

}

实验六、FFT实验

实验内容：

1、验证ICETEK-VC5416-A评估板及教学实验箱实验指导书实验5.3。

2、将内容1的位倒序函数、FFT函数改用汇编语言实现。

3、比较两种程序的代码长度和效率。

4、程序计算的功率谱与CCS计算的功率谱为何不一致（只是相近）？如何使它们一致？