1602液晶C程序

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xuqijia|

楼主 | 2008-10-22 08:21 | 只看该作者回帖奖励

|倒序浏览 |阅读模式

c程序, 液晶, COM, AN, command

＃i nclude <reg52.h>

＃i nclude <intrins.h>
#ifndef uchar
#define uchar unsigned char
#endif
#ifndef uint
#define uint  unsigned int
#endif
#define DATA  P1
sbit RS=P3^7;
sbit RW=P3^6;
sbit E =P3^5;
sbit BS=P1^7;

uchar *h="hello everyone ! \n   welcome!   " ;

void busy()        //???????
{
do
{
  DATA=0xFF;
  RS=0;
  RW=1;
  E=0;
  _nop_();
  E=1;
}while(BS);
}
void command(uchar dat)
{
DATA=dat;
RS=0;
RW=0;
E=0;
busy();
E=1;
}
void write(uchar dat)
{
DATA=dat;
RS=1;
RW=0;
E=0;
busy();
E=1;
}

void clear(uchar dat)     //???  1 ??
{
command(dat);
}

void back(uchar a)        //????
{
a;
command(0x02);
}

void mov(uchar id,uchar s)                      //id ?????????1?? 0 ??
{                                               //s???????????1? 0 ?
command(0x04|(id<<1)|s);
}

void run(uchar d,uchar c,uchar b)               //??????
{                                               //d  ??????   1 ?  2 ?
command(0x08|(d<<2)|(c<<1)|b);                 //c  ??????   1 ?  2 ?
}
                                                //b  ??????   1 ?  2 ?
void shift(uchar sc,uchar rl)                   //sc 1 ?????? 0 ??????
{                                               //rl 1 ??         0 ??
command(0x10|(sc<<3)|(rl<<2));
}

void function(uchar dl,uchar n,uchar f)          //dl 1 ????     0 ????
                                                 //??dl 1????  0  ???? ????????
{                                                //n  1 ????     0 ????
command(0x20|(dl<<4)|(n<<3)|(f<<2));            //f  1 5*10??     0 5*7 ??
}

void charaddr(uchar agg)                         //????????
{
command(0x40|agg);
}

void dataaddr(uchar add)                         //?????????
{
command(add|0x80);
}

void text(uchar dat)      //?????
{
write(dat);
}

void delay(uint t)
{
uint i;
while(!((t--)==0x0))
   {
   for(i=0;i<0x1fff;i++);
   }
}

void print(uchar row ,char *p)   //????  row??????  *p??????
{
uchar a=0x0,i=1;
dataaddr(row);
  while(i--)
{
while((*p)!='\0')
  {
   text(*p++);
   delay(2);
   if(((*p)=='\n'))
     {
     back(2);
     dataaddr(0x50);
     }
   }
p=&h[0];
    dataaddr(0x10);
}
}
/*main.c**************************************/
#define uchar unsigned char
#define uint  unsigned int
void initial()
{
clear(1);
function(1,1,0);
mov(1,1);
shift(1,1);
run(1,0,0);
clear(0);
}
void main()
{
uchar s;
s=10;
initial();
do
{
clear(1);
back(2);
print(0x10,h);
delay(5);
_nop_();
delay(0x00);
clear(1);
back(2);
print(0x10,"I can ! belive me ! ");
delay(5);
_nop_();
delay(0x00);
}
while(s--);
clear(1);
while(1);
}

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1602液晶C程序

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