c_asm_twotager.c

单片机98c51的一些程序代码

//#include <AT89X51.H>
#include <REG51.H>
#include <stdio.h>

sbit    BEEP=P2^7; 
unsigned char th0_f; //在中断中装载的T0的值高8位
unsigned char tl0_f; //在中断中装载的T0的值低8位

void dems(void);

//----------------------------------
void delay400ms(void)
{
  unsigned char TempCycA = 5;
  unsigned int TempCycB;
  while(TempCycA--)
  {
  TempCycB=1000;//2000;//7269;
  while(TempCycB--);

  }
}

//----------------------

//定时中断0,用于产生唱歌频率
timer0() interrupt 1 
{
    TL0 =tl0_f ;TH0 =th0_f;  //调入预定时值
    BEEP =~BEEP;           //取反音乐输出IO
}

void delay(unsigned char times)
{unsigned char t,i =times;
  for(;i!=0;i--)
	for(t=500;t!=0;t--)
	;
 }

void twotager(void)
{
      unsigned char yuepu[33] ={0x44 ,0x54 ,0x64 ,0x44 ,
                                0x44 ,0x54 ,0x64 ,0x44 ,
                                0x64 ,0x74 ,0x88 ,
                                0x64 ,0x74 ,0x88 ,
                                0x82 ,0x92 ,0x82 ,0x72 ,0x64 ,0x44 ,
                                0x82 ,0x92 ,0x82 ,0x72 ,0x64 ,0x44 ,
                                0x44 ,0x84 ,0x48 ,
                                0x44 ,0x14 ,0x48 ,
                                0x00 };
      unsigned int yingao[15] ={64260, 64400, 64524, 64580,
                                64684, 64777, 64820, 64898,
                                64968, 65030, 65058, 65110,
                                65157, 65178, 65217 };
                                
unsigned int templ =0,temph =0,flag = 0; //定义循环用的变量
unsigned int b,loop,c =0,end = 30000;//loop1,loop2,loop3,
unsigned char p2k =0x00;
TMOD = 0x01;
TR0 = 0;
ET0 = 1;
EA = 1;
do{
  c++;
  for (b=4; b!=0 ;b--)
    dems();
  for (b=0; yuepu[b]!=0 ;b++) //b<33; b++) //逐个符号演奏
    {
     templ = yuepu[b] & 0x0f ;
     temph = yuepu[b] & 0xf0 ;
     temph = temph>>4;
     temph--;
     
     th0_f = (yingao[temph] ) / 256  ;
     tl0_f = (yingao[temph] ) % 256  ;
     
     TL0 = tl0_f;
     TH0 = th0_f;
     TR0 = 1;
     
     for(loop = 1;loop <= templ -1; loop++)
	    dems( );
     
    TR0 =0;
    
	delay(2);
       }
   }while(c < 5);  

}

void main(void)
{ while(1)
   {//hua();
	//delay400ms();
	//hello();
	//delay400ms();
	//zyy();
	//delay400ms();
	twotager();
	delay400ms();
   }
}

void dems(void)
{   //在Keil uVision2中右键点击c文件,properties项使能对话框中的Generate Assembler SRC File和Assembler SRC File选项。
    //在Keil uVision2中将文件编辑成.hex文件,然后再在\星研中跟踪或直接写入芯片.
	#pragma asm
    delay:  mov r7,#02h
    d2:     mov r4,#125
    d3:     mov r3,#248
            djnz r3,$
            djnz r4,d3
            djnz r7,d2
            
      end
   #pragma endasm;

 }