12864.c

这是本人在学习51单片机时练习的C程序 [e-mail]

/*图形液晶12864+时钟芯片1302+at89s52 +时钟程序（.C） */
#include <reg51.h>

sbit  ACC0=ACC^0;
sbit  ACC7=ACC^7;
/*-----------------------------1302:引角配置----------------------------*/
sbit Rst_1302=P2^4;
sbit Io_1302=P2^3;
sbit Clk_1302=P2^2;


/*---------------------------12864:引脚配置-----------------------------*/
#define Lcd_Bus P0  //MCU P1<------> LCM
sbit Cs1_12864=P2^1;  //Master chip enable
sbit Cs2_12864=P2^0;  //Slave chip enable
sbit E_12864=P1^4; //6800 mode Enable single
sbit Rs_12864=P1^6;  //Data or Instrument Select
sbit Rw_12864=P1^5;  //Write or Read
/*--------------------------12864:控制寄存器---------------------------*/
#define Disp_On  0x3f
#define Disp_Off 0x3e
#define Col_Add  0x40
#define Page_Add 0xb8
#define Start_Line 0xc0




unsigned char code time_cha[2][32]={
/*--  文字:  时  --*/
/*--  Times New Roman12;  此字体下对应的点阵为：宽x高=16x16   --*/
0x00,0xFC,0x44,0x44,0x44,0xFC,0x10,0x90,0x10,0x10,0x10,0xFF,0x10,0x10,0x10,0x00,
0x00,0x07,0x04,0x04,0x04,0x07,0x00,0x00,0x03,0x40,0x80,0x7F,0x00,0x00,0x00,0x00,
/*--  文字:  间  --*/
/*--  Times New Roman12;  此字体下对应的点阵为：宽x高=16x16   --*/
0x00,0xF8,0x01,0x06,0x00,0xF0,0x92,0x92,0x92,0x92,0xF2,0x02,0x02,0xFE,0x00,0x00,
0x00,0xFF,0x00,0x00,0x00,0x07,0x04,0x04,0x04,0x04,0x07,0x40,0x80,0x7F,0x00,0x00};

unsigned char code dian[]={
/*--  文字: ":" --*/
/*--  宋体12;  此字体下对应的点阵为：行x列=16x8   --*/
0x00,0x00,0x00,0xC0,0xC0,0x00,0x00,0x00,
0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00
};


unsigned char code time_let[10][16]={
/*--  文字:  0  --*/
/*--  Times New Roman12;  此字体下对应的点阵为：宽x高=8x16   --*/
0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x0F,0x10,0x20,0x20,0x10,0x0F,0x00,

/*--  文字:  1  --*/
/*--  Times New Roman12;  此字体下对应的点阵为：宽x高=8x16   --*/
0x00,0x10,0x10,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,

/*--  文字:  2  --*/
/*--  Times New Roman12;  此字体下对应的点阵为：宽x高=8x16   --*/
0x00,0x70,0x08,0x08,0x08,0x88,0x70,0x00,0x00,0x30,0x28,0x24,0x22,0x21,0x30,0x00,

/*--  文字:  3  --*/
/*--  Times New Roman12;  此字体下对应的点阵为：宽x高=8x16   --*/
0x00,0x30,0x08,0x88,0x88,0x48,0x30,0x00,0x00,0x18,0x20,0x20,0x20,0x11,0x0E,0x00,

/*--  文字:  4  --*/
/*--  Times New Roman12;  此字体下对应的点阵为：宽x高=8x16   --*/
0x00,0x00,0xC0,0x20,0x10,0xF8,0x00,0x00,0x00,0x07,0x04,0x24,0x24,0x3F,0x24,0x00,

/*--  文字:  5  --*/
/*--  Times New Roman12;  此字体下对应的点阵为：宽x高=8x16   --*/
0x00,0xF8,0x08,0x88,0x88,0x08,0x08,0x00,0x00,0x19,0x21,0x20,0x20,0x11,0x0E,0x00,

/*--  文字:  6  --*/
/*--  Times New Roman12;  此字体下对应的点阵为：宽x高=8x16   --*/
0x00,0xE0,0x10,0x88,0x88,0x18,0x00,0x00,0x00,0x0F,0x11,0x20,0x20,0x11,0x0E,0x00,

/*--  文字:  7  --*/
/*--  Times New Roman12;  此字体下对应的点阵为：宽x高=8x16   --*/
0x00,0x38,0x08,0x08,0xC8,0x38,0x08,0x00,0x00,0x00,0x00,0x3F,0x00,0x00,0x00,0x00,

/*--  文字:  8  --*/
/*--  Times New Roman12;  此字体下对应的点阵为：宽x高=8x16   --*/
0x00,0x70,0x88,0x08,0x08,0x88,0x70,0x00,0x00,0x1C,0x22,0x21,0x21,0x22,0x1C,0x00,

/*--  文字:  9  --*/
/*--  Times New Roman12;  此字体下对应的点阵为：宽x高=8x16   --*/
0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x00,0x31,0x22,0x22,0x11,0x0F,0x00,};






/*--------------------------------------------------------------------*/
/*                  DS1302                                            */
/*                                                                     */
/*---------------------------------------------------------------------*/
void write_dat_1302(unsigned char temp)     //DS1302：写入操作
{
   unsigned char i;
   ACC=temp;
   for(i=8;i>0;i--)
   { 
      Io_1302=ACC0;
	  Clk_1302=0;     
      Clk_1302=1;
      ACC=ACC>>1;
   }
}

unsigned char read_dat_1302(void)        //DS1302：读取操作   
{
   unsigned char i;
   for(i=0;i<8;i++)
   {
      ACC=ACC>>1;
	  Clk_1302 = 1;
	  Clk_1302 = 0;
      ACC7 = Io_1302;
   }
   return(ACC);

}

void write_1302(unsigned char addr,unsigned char temp) //DS1302:写入数据（先送地址，再写数据?
{
   Rst_1302=0;    //停止工作
   Clk_1302=0;                                 
   Rst_1302=1;   //重新工作
   write_dat_1302(addr);    //写入地址
   
   write_dat_1302(temp);
   Rst_1302=0;
   Clk_1302=1;
}

unsigned char read_1302(unsigned char addr)   //DS1302:读取数据（先送地址，再读数据）
{
   unsigned char temp;
   Rst_1302=0;                        //停止工作
   Clk_1302=0;  
   Rst_1302=1;                         //重新工作
   write_dat_1302(addr);   //写入地址
   temp=read_dat_1302();
   Rst_1302=0;
   Clk_1302=1;     //停止工作
   return(temp);
}



/*--------------------------------------------------------------------*/
/*               12864                                           */
/*                                                                     */
/*---------------------------------------------------------------------*/
/*------------------------------12864:写命令-------------------------*/
void write_cmd_12864(unsigned char temp)
{
   Lcd_Bus=temp;
   Rs_12864=0;              //   E状态         执行动作          结果
   Rw_12864=0;              //  低/低-->高     无动作            
   E_12864=1;               //  高             数据缓冲        配合R进行读数据或指令  
   E_12864=0;               //  高-->低                        配合/W进行写数据或指令
}


/*------------------------------12864:写资料----------------------------*/
void write_dat_12864(unsigned char temp)
{ 
   Lcd_Bus=temp;
   Rs_12864=1;
   Rw_12864=0;
   E_12864=0;
   E_12864=1;
   E_12864=0;
}

/*------------------------------12864：初使化-------------------------*/
void ini_12864(void)
{
   Cs1_12864=1;  Cs2_12864=1;
   write_cmd_12864(Disp_Off);
   write_cmd_12864(Page_Add);
   write_cmd_12864(Col_Add);
   write_cmd_12864(Start_Line);
   write_cmd_12864(Disp_On);
}


/*------------------------------12864:清零---------------------------*/
void clr_12864(void)
{
   unsigned char i=0,j=0;
   Cs1_12864=1; Cs2_12864=1;
   write_cmd_12864(Page_Add);
   write_cmd_12864(Col_Add);

   for(i=0;i<8;i++)
   {
      write_cmd_12864(Page_Add+i);
      for(j=0;j<64;j++)
        write_dat_12864(0x00);
   }
   
}

/*--------------------------------12864:显示字符  行x列:16x16点     --------------------*/
void show_cha_12864(unsigned char page, unsigned char col,unsigned char *poi)
{
   unsigned char i=0,j=0;
   for(i=0;i<2;i++)
   {
      write_cmd_12864(Page_Add+page+i);
	  write_cmd_12864(Col_Add+col);
	  for(j=0;j<16;j++)
	     write_dat_12864( poi[16*i+j] );
   }
}


/*--------------------------------12864:显示字符  8x16点    --------------------*/
void show_let_12864(unsigned char page, unsigned char col,unsigned char *poi)
{
   unsigned char i=0,j=0;
   for(i=0;i<2;i++)
   {
      write_cmd_12864(Page_Add+page+i);    //2行  16个点
	  write_cmd_12864(Col_Add+col);
	  for(j=0;j<8;j++)             // 1列  8个点              
	     write_dat_12864( poi[8*i+j] );
  }
}


/*----------------------------------12864:显示-----------------------------------*/
void show_12864(unsigned char *poi)
{
   unsigned char i;
   clr_12864();

   Cs1_12864=0;  Cs2_12864=1;
   i=*poi/16;
   show_let_12864(0,24,time_let[i]);    // 显示sec 十位
   i=*poi%16;
   show_let_12864(0,32,time_let[i]);      // 显示sec 个位
   poi+=1;

   show_let_12864(0,16,dian);              //显示 "："

   i=*poi/16;
   show_let_12864(0,0,time_let[i]);    // 显示min 十位   
   i=*poi%16;
   show_let_12864(0,8,time_let[i]);      // 显示min 个位
   poi+=1;

   Cs1_12864=1;  Cs2_12864=0;
   show_let_12864(0,56,dian);              //显示 "："  
   i=*poi/16;
   show_let_12864(0,40,time_let[i]);    // 显示hour 十位
   i=*poi%16;
   show_let_12864(0,48,time_let[i]);      // 显示hour 个位
   
   
   show_cha_12864(0,0,time_cha[0]);   // "时"
   show_cha_12864(0,16,time_cha[1]);  //  "间"
}




void main(void)
{
   unsigned char i;
   unsigned char clk_time[3]={0x00,0x00,0x12};  //秒，分，时寄存器初始值
   unsigned char  temp=0x80;       // 地址80：秒写入寄存器  
   write_1302(0x8e,0x00);             //WP=0 写操作
   for(i=0;i<3;i++)
   {
   write_1302(temp,clk_time[i]);
   temp+=2;
   }
   write_1302(0x8e,0x80);             //WP=1 写保护  
   
   ini_12864();       //初始化12864
   
   while(1)
   {
      show_12864(clk_time);
	  temp=0x81;                   // 地址81：秒写入寄存器  
	  for(i=0;i<3;i++)            //更新时间
	  {
       clk_time[i]=read_1302(temp);
	   temp+=2;
	  }
   }
}