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来源：互联网发布：阿里云怎么套网站模板编辑：程序博客网时间：2024/04/27 18:02

#include <reg51.H>
#include <absacc.H>
#include <stdio.h>

#define LCD_COMMAND 0x9000
#define LCD_DATA_R 0x9C00
#define LCD_DATA_W 0x9400
#define DA_ADDRESS 0xC000
#define AD_ADDRESS 0xA000
/*-------------------------LCD 驱动部分函数声明----------------------------*/
void DelayL();
void DelayS();
void WriteCommand(unsigned char c);
void WriteData(unsigned char c);
unsigned char ReadData();
void ShowChar(unsigned char pos,unsigned char c);
void ShowString(unsigned char line,char *ptr);
void InitLcd();
void InitInterupt();
/*----------------------------全局变量--------------------------------------*/
static unsigned char flag1;           //启动功能标志
static unsigned char flag2;           //功能号标志
static unsigned int address;         //RAM地址
static unsigned char chip;            //RAM片选
static unsigned char intflag;          //中断标志
static unsigned int count;           //串行数据计数

void main (void) {
char code str1[] =" Designed by HGR                ";
char code str2[] ="   2002-8-26                    ";
char code Menu[] ="    Menu Item   ";
char code Item[] ="1 Sample voice 2 Play sound   3 Download data 4 Upload data ";
char data str3[] ="                ";
unsigned char i,j;

     SP=0x50;       //堆栈指针
     DelayL();
InitLcd();                //初始化LCD
DelayL();
     ShowString(0,str1);       //显示启动屏幕
ShowString(1,str2);
DelayL();
     DelayL();
DelayL();
DelayL();
     for(i=0;i<17;i++)         //字幕滚动
{
    ShowString(0,str1+i);
    ShowString(1,str2+i);
    for(j=0;j<120;j++)
       DelayS();
}
     InitInterupt();            //初始化中断设置

flag1=0;                   //功能启动标志置0
flag2=0;                   //功能号置0
chip=0;                    //RAM片选置0
address=0;                 //RAM地址置0
intflag=0;                 //中断标志置0
     count =0;                 //下载计数置0
P1=chip;                   //写RAM片选
enter:
     if(flag1==0)               //未启动任何功能
     {
    ShowString(0,Menu);            //第一行显示Menu头
    ShowString(1,Item+flag2*16);   //第二行显示功能项
}
     else                       //已经启动功能
{
    ShowString(0,Item+flag2*16);   //第一行显示功能项
       switch(flag2)                  //第二行显示对应操作界面
       {
        case 0:       //功能0，显示正在采样
          sprintf(str3,"Now sampling.. ");
    break;
     case 1:
    sprintf(str3,"Now playing..   "); //功能1，显示正在播放
    break;
        case 2:       //功能2，显示下载计数
          sprintf(str3,"down %d bytes   ",count);
          break;
        case 3:       //功能3，上传RAM数据
          while(1)
          {
          SBUF=XBYTE[address++];   //读取RAM数据发送，地址自加
          while(!TI);
          TI=0;
          count++;
    if(address==0x8000)    //到了RAM片内最大地址
    {
        address=0;     //片内地址复0
            chip=chip+1;     //片选加1
      P1=chip;     //选通RAM
      if(chip==32)    //到达RAM最大容量
            {
              chip=0;     //片选复0
              flag1=0;         //功能关闭
              goto enter;     //返回显示上级菜单
            }
    }
          sprintf(str3,"up %d bytes     ",count);
          }
          break;
        default:
          break;
    }
    ShowString(1,str3);
}
while(!intflag);      //等待中断触发
intflag=0;       //中断标志复0
goto enter;      //返回修改菜单显示
}

/*-----------------------------中断处理-------------------------------------*/
Int0_process() interrupt 0 using 0 //外部中断0，对应1键
{
EA=0;
DelayL();

if(flag1==0)                //若功能未启动，则功能号加1
{
     flag2++;
flag2=flag2%4;      //达到最大，则功能号复0
}
else                       //功能已启动则该键为关闭功能
{
     flag1=0;
     TR0=0;       //关闭定时、复位RAM地址
chip=0;
address=0;
count=0;
}

EA=1;
intflag=1;
}

Int1_process() interrupt 2 using 0 //外部中断1，对应2键
{
char code blank[]=" ";
EA=0;
DelayL();

if(flag1==0)       //若功能未启动，则2键启动该功能
{
    flag1=1;
    ShowString(1,blank);
    if(flag2==0||flag2==1)     //功能号为0、1，则开启定时
      TR0=1;
}

EA=1;
intflag=1;
}

Timer0_process() interrupt 1 using 0   //定时中断，开启功能0、1时启动
{
unsigned char c;
EA=0;
TR0=0;        //先关闭定时
TL0=0x80;       //重新设置定时参数
TH0=0xFB;

if(flag2==0)       //如果为功能0，则采样存入RAM
{
    XBYTE[AD_ADDRESS]=0;    //启动AD转换
    while(P1&0x80);      //等待转换完成
    c=XBYTE[AD_ADDRESS];    //读取采样数据
    XBYTE[address++]=c;     //存入RAM
}
else        //否则为播放声音
{
    c=XBYTE[address++];     //读取RAM数据
    XBYTE[DA_ADDRESS]=c;    //写DA
}

if(address==0x8000)      //RAM地址处理
{
    address=0;
    chip=chip+1;
    P1=chip;
}
if(chip==32)       //若到达RAM最大地址，则结束功能
{
     chip=0;
     flag1=0;
}
else         //否则，重新开始定时
     TR0=1;

EA=1;
intflag=1;
}

Rs232() interrupt 4 using 0 //串行接受中断
{
unsigned char c;
EA=0;
c=SBUF;
RI=0;

if(flag1==1)                //若功能已经开启
{
   if(flag2==2)       //若功能号为2（下载）
   {
     XBYTE[address++]=c;    //写入RAM
     count++;       //计数加1
   }
   if(address==0x8000)     //RAM地址处理
   {
     chip=chip+1;
     address=0;
     P1=chip;
     if(chip==32)
     {
       chip=0;
       flag1=0;
     }
   }
}
EA=1;
intflag=1;
}

void InitInterupt()
{
TMOD=0x21;            //初始化串口和定时器设置
TL1=0xFD;
TH1=0xFD;
EA=1;
ES=1;
PCON=0;
TR1=1;
SCON=0x50;

EX0=1; //外部中断0初始化
IT0=1;
EX1=1; //外部中断0初始化
IT1=1;

TL0=0x80; //定时125us
TH0=0xFB;

ET0=1;
}

/*--------------------------------
void DelayL()
{unsigned char i,j;
i=0xA0;
j=0xFF;
while(i--)
while(j--);
}

void DelayS()
{unsigned char i;
i=0x1F;
while(i--);
}

void WriteCommand(unsigned char c)
{
DelayS();
XBYTE[LCD_COMMAND]=c;
}

void WriteData(unsigned char c)
{
DelayS();
XBYTE[LCD_DATA_W]=c;
}

void ShowChar(unsigned char pos,unsigned char c)
{
unsigned char p;
if(pos>=0x10)
p=pos+0xB0;
else
p=pos+0x80;
WriteCommand(p);
WriteData(c);
}

void ShowString(unsigned char line,char *ptr)
{
unsigned char l,i;
l=line<<4;
for(i=0;i<16;i++)
ShowChar(l++,*(ptr+i));
}

void InitLcd()
{
DelayL();
WriteCommand(0x38);
WriteCommand(0x38);
WriteCommand(0x06);
WriteCommand(0x0C);
WriteCommand(0x01);
WriteCommand(0x80);
}

unsigned char ReadData()
{
unsigned char i;
DelayS();
P0=0xFF;
i=XBYTE[LCD_DATA_R];
return i;
}