求助工程大佬們基于51單片機12864電子時鐘，不采用時鐘芯片

ID:432611 · 發表于 2018-11-25 19:41

求一個基于51單片機和12864設計的簡單電子時鐘，且不采用時鐘芯片的C51源程序和.hex可執行文件和proteus仿真，顯示時分秒即可，謝謝

ID:442767 · 發表于 2018-12-9 18:14

#include<msp430f149.h>
#include "p_lcd12864.h"

/**************************************************
函數名稱：lcd_delay_n
功能：大致延時只要滿足正常顯示即可根據實際調節
參數：n
返回值  ：無
**************************************************/
void lcd_delay_n(unsigned int n)
{
unsigned int i;
for(i=n;i>0;i--)  _NOP();
}

/**************************************************
函數名稱：my_abs
功能：求絕對值調用math。h中的abs總是有警告于是自己寫
參數：a
返回值  ：無
**************************************************/
unsigned int my_abs(int a)
{
if(a<0)
      a=-a;
return a;
}

/**************************************************
函數名稱：write_cmd
功能：向液晶中寫控制命令
參數：cmd--控制命令
返回值  ：無
**************************************************/
void write_cmd(unsigned char cmd)
{
unsigned char lcdtemp = 0;
LCD_RS_L;
LCD_RW_H;
LCD_DataIn;
do
{
      LCD_EN_H;
      _NOP();
      lcdtemp = LCD2MCU_Data;
      LCD_EN_L;
}
while(lcdtemp&0x80);

LCD_DataOut;
LCD_RS_L;
LCD_RW_L;
MCU2LCD_Data = cmd;

LCD_EN_H;
_NOP();
LCD_EN_L;
}

/**************************************************
函數名稱：write_data
功能：向液晶中寫數據
參數：dat--顯示數據
返回值  ：無
**************************************************/
void write_data(unsigned char dat)
{
unsigned char lcdtemp;
LCD_RS_L;
LCD_RW_H;
LCD_DataIn;
do
{
      LCD_EN_H;
      _NOP();
      lcdtemp = LCD2MCU_Data;
      LCD_EN_L;
}
while(lcdtemp&0x80);

LCD_RS_H;
LCD_RW_L;
LCD_DataOut;
MCU2LCD_Data = dat;
LCD_EN_H;
_NOP();
LCD_EN_L;
}

/**************************************************
函數名稱：lcd_read_data
功能：讀取12864中一個字節的數據
參數：無
返回值  ：顯示的數據
**************************************************/
unsigned char lcd_read_data(void)
{
unsigned char Data_Temp;
unsigned char lcdtemp;
LCD_RS_L;
LCD_RW_H;
LCD_DataIn;
do
{
      LCD_EN_H;
      _NOP();
      lcdtemp = LCD2MCU_Data;
      LCD_EN_L;
}
while(lcdtemp&0x80);

LCD_RS_H;
LCD_RW_H;
LCD_DataIn;

LCD_EN_H;
_NOP();
Data_Temp = LCD2MCU_Data;
LCD_EN_L;

return Data_Temp;
}

/**************************************************
函數名稱：lcd_setxy
功能：設置顯示位置
參數：X(1~16),Y(1~4)
返回值  ：無
**************************************************/
void lcd_setxy(unsigned char x,unsigned char y)
{
switch(y)
{
      case 1:
      write_cmd(0x7F+x);break;
      case 2:
      write_cmd(0x8F+x);break;
      case 3:
      write_cmd(0x87+x);break;
      case 4:
      write_cmd(0x97+x);break;
      default:break;
}
}

/**************************************************
函數名稱：display_line
功能：在指定位置顯示字符串
參數：坐標x y 字符串str
返回值  ：無
**************************************************/
void display_line(unsigned char x,unsigned char y,const char* str)
{
unsigned char LCD_temp;
lcd_setxy(x,y);
LCD_temp=*str;
while(LCD_temp != 0x00)
{
      write_data(LCD_temp);
      LCD_temp=*(++str);
}
}

/**************************************************
函數名稱：display_3digit
功能：在指定位置開始顯示三位數字
參數：坐標x y 數字d
返回值  ：無
**************************************************/
void display_3digit(unsigned char x,unsigned char y,unsigned int d)
{
unsigned char a[3],i;
a[0]=d/100;
a[1]=(d%100)/10;
a[2]=d%10;
lcd_setxy(x,y);
for(i=0;i<3;i++)
{
      write_data(0x30+a[i]);
      //DelayUs2x(15);
      lcd_delay_n(1);
}
}

/**************************************************
函數名稱：display_2digit
功能：在指定位置開始顯示兩位數字
參數：坐標x y 數字d
返回值  ：無
**************************************************/
void display_2digit(unsigned char x,unsigned char y,unsigned int d)
{
unsigned char a[2],i;
a[0]=d/10;
a[1]=d%10;
lcd_setxy(x,y);
for(i=0;i<2;i++)
{
      write_data(0x30+a[i]);
      //DelayUs2x(15);
      lcd_delay_n(1);
}
}

/**************************************************
函數名稱：display_float
功能：在指定位置開始顯示浮點數
參數：坐標x y 數字d
返回值  ：無
**************************************************/
void display_float(unsigned char x,unsigned char y,float d)
{
char a[15];
sprintf(a,"%.2f",d);  //修改.f中間的數字可改變保留幾位小數
display_line(x,y,a);

}

/**************************************************
函數名稱：display_float
功能：清除顯示
參數：無
返回值  ：無
**************************************************/
void clr_screen(void)
{
write_cmd(0x01);
//delay_ms(15);
}

/**************************************************
函數名稱：display_page
功能：顯示一頁字符
參數：字符數組s
返回值  ：無

格式const  char *Page1[]=
{
   {"**【>>菜單<<】**"},
   {"撥號  通訊 QQ "},
   {"信息  設置  相機"},
   {"娛樂  備忘 UC "}

};
**************************************************/
void display_page( const char **s)
{
unsigned char  i;
clr_screen();
for(i=1;i<5;i++)
      display_line(1,i,s[i-1]);

}

/**************************************************
函數名稱：init12864
功能：初始化液晶模塊
參數：無
返回值  ：無
**************************************************/
void init12864(void)
{
LCD_DataOut;
LCD_CMDOut;                //液晶控制端口設置為輸出

lcd_delay_n(50);
write_cmd(0x30);          //基本指令集
lcd_delay_n(50);
write_cmd(0x30);          //選擇8bit數據流
lcd_delay_n(50);
write_cmd(0x02);          //地址歸位
lcd_delay_n(50);
write_cmd(0x0c);          //整體顯示打開,游標關閉
lcd_delay_n(50);
write_cmd(0x01);          //清除顯示
lcd_delay_n(50);
write_cmd(0x06);          //游標右移
lcd_delay_n(50);
write_cmd(0x80);          //設定顯示的起始地址
lcd_delay_n(2000);
}

/**************************************************
函數名稱：Clear_GDRAM
功能：清除液晶GDRAM中的隨機數據
參數：無
返回值  ：無
**************************************************/
void clear_GDRAM(void)
{
unsigned char i,j,k;

write_cmd(0x34);             //打開擴展指令集
i = 0x80;
for(j = 0;j < 32;j++)
{
      write_cmd(i++);
      write_cmd(0x80);
      for(k = 0;k < 16;k++)
      {
         write_data(0x00);
      }
}
i = 0x80;
for(j = 0;j < 32;j++)
{
      write_cmd(i++);
      write_cmd(0x88);
      for(k = 0;k < 16;k++)
      {
         write_data(0x00);
      }
}
write_cmd(0x30);                //回到基本指令集
}

/*******************************************
函數名稱:draw_picture
功能:在整個液晶屏幕上畫圖
參數:圖片數組ptr
返回值  :無
格式：寬度x高度=128x64
unsigned char const logo[]={
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x20,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x07,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x3F,0xFF,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0xFF,0xFF,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x01,0xFF,0xFF,0xF8,0x00,0x00,0x00,0x7F,0x80,0x00,0x00,0x7F,0x80,0x00,0x00,
0x00,0x03,0xFF,0xFF,0xFE,0x00,0x00,0x01,0xFF,0xE0,0x00,0x01,0xFF,0xE0,0x00,0x00,
0x00,0x07,0xFF,0xFF,0xFE,0x00,0x00,0x07,0xFF,0xF0,0x00,0x07,0xFF,0xF0,0x00,0x00,
0x00,0x0F,0xF9,0xFD,0xFF,0x00,0x00,0x0F,0xFF,0xF8,0x00,0x0F,0xFF,0xF8,0x00,0x00,
0x00,0x0F,0xF0,0xF0,0xFF,0x80,0x00,0x1F,0xFF,0xFC,0x00,0x1F,0xFF,0xFC,0x00,0x00,
0x00,0x1F,0xF0,0x70,0x7F,0x80,0x00,0x3F,0xFF,0xFC,0x00,0x3F,0xFF,0xFC,0x00,0x00,
0x00,0x1F,0xE1,0x70,0x7F,0x80,0x00,0x7F,0xFF,0xFE,0x00,0x7F,0xFF,0xFE,0x00,0x00,
0x00,0x3F,0xE1,0x66,0x7F,0xC0,0x00,0xFF,0xFF,0xFE,0x00,0xFF,0xFF,0xFE,0x00,0x00,
0x00,0x3F,0xE3,0xE0,0x7F,0xC0,0x01,0xFF,0xFF,0xFE,0x01,0xFF,0xFF,0xFE,0x00,0x00,
0x00,0x3F,0xE0,0x60,0x7F,0xE0,0x01,0xFF,0xEF,0xFF,0x01,0xFF,0xEF,0xFF,0x00,0x00,
0x00,0x7F,0xF0,0xF0,0x7F,0xC0,0x03,0xFF,0x87,0xFF,0x03,0xFF,0x87,0xFF,0x00,0x00,
0x00,0x3F,0xF0,0xF8,0xFF,0xE0,0x03,0xFF,0x83,0xFF,0x83,0xFF,0x81,0xFF,0x80,0x00,
0x00,0x7F,0xFF,0xFF,0xFF,0xE0,0x07,0xFF,0x01,0xFF,0x07,0xFF,0x01,0xFF,0x00,0x00,
0x00,0x7F,0xFF,0xFF,0xFF,0xF0,0x07,0xFF,0x00,0xFF,0x87,0xFF,0x00,0xFF,0x80,0x00,
0x00,0x7F,0xE0,0x00,0xBF,0xF0,0x0F,0xFE,0x00,0xFF,0x8F,0xFE,0x00,0xFF,0x80,0x00,
0x00,0xFF,0x80,0x00,0x0F,0xF0,0x0F,0xFE,0x00,0xFF,0x8F,0xFE,0x00,0xFF,0x80,0x00,
0x00,0xFE,0x00,0x00,0x07,0xF0,0x1F,0xFC,0x00,0x7F,0x9F,0xFC,0x00,0x7F,0x80,0x00,
0x00,0xFF,0xB0,0x00,0x5F,0xF0,0x0F,0xFC,0x00,0xFF,0x8F,0xFC,0x00,0x7F,0x80,0x00,
0x01,0xFF,0xF8,0x01,0xFF,0xF0,0x1F,0xF8,0x3D,0xFF,0x9F,0xFC,0x3D,0xFF,0x80,0x00,
0x01,0xFF,0xFF,0xDF,0xFF,0xF8,0x0F,0xFC,0x37,0x0F,0x8F,0xFC,0x37,0x9F,0x80,0x00,
0x07,0xFF,0xFF,0xFF,0xFF,0xF8,0x1F,0xF8,0x66,0x07,0x1F,0xF8,0x26,0x0F,0x80,0x00,
0x07,0xFF,0xFF,0xFF,0xFF,0xFC,0x0F,0xFC,0x6C,0x63,0x8F,0xFC,0x66,0x63,0x80,0x00,
0x1F,0xC7,0xFF,0xFF,0xFC,0xFE,0x0F,0xFE,0xEC,0x80,0x8F,0xFE,0xED,0x80,0x80,0x00,
0x1F,0xC3,0xFF,0xFF,0xF0,0x7E,0x07,0xFF,0xFC,0x00,0x07,0xFF,0xFE,0x80,0x00,0x00,
0x3F,0xC7,0xFF,0xFF,0x80,0x7F,0x07,0xFF,0xFE,0x00,0x07,0xFF,0xFE,0x00,0x00,0x00,
0x3F,0xC3,0xFD,0xFA,0x00,0x3F,0x01,0xFF,0xFF,0x00,0x21,0xFF,0xFF,0x00,0x20,0x00,
0x3F,0x87,0xF0,0x00,0x00,0x3F,0x00,0xFF,0xFF,0x00,0x40,0xFF,0xFF,0x00,0x40,0x00,
0x7F,0x83,0xF8,0x00,0x00,0x3F,0x00,0x1F,0xFF,0x80,0x40,0x1F,0xFF,0xC0,0xC0,0x00,
0x7F,0x87,0xF0,0x00,0x00,0x3F,0x00,0x00,0x00,0xC1,0x80,0x00,0x00,0xE3,0x80,0x00,
0x7F,0xC3,0xF8,0x00,0x00,0x3F,0x80,0x00,0x00,0x7F,0x00,0x00,0x00,0x7F,0x00,0x00,
0x7B,0x83,0xF0,0x00,0x00,0x3F,0x00,0x00,0x00,0x1C,0x00,0x00,0x00,0x1C,0x00,0x00,
0x79,0xC1,0xF0,0x00,0x00,0x27,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x21,0xC0,0x00,0x00,0x00,0x67,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0xE0,0x00,0x00,0x00,0x40,0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0x00,0xE0,0x00,0x00,0x00,0xC0,0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0x00,0x30,0x00,0x00,0x01,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x38,0x00,0x00,0x03,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x9C,0x00,0x00,0x06,0x40,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x01,0x07,0x00,0x00,0x0C,0x60,0x07,0xF8,0x00,0x00,0x00,0x01,0xE0,0x00,0x00,0x70,
0x01,0x81,0xC0,0x00,0x38,0x10,0x03,0x30,0x00,0x00,0x00,0x03,0x60,0x00,0x00,0x30,
0x01,0x00,0xF8,0x00,0xE0,0x10,0x03,0x30,0x00,0x00,0x00,0x06,0x00,0x00,0x00,0x30,
0x01,0x00,0x03,0xAD,0x00,0x10,0x01,0xE1,0xE3,0xF7,0xF8,0x06,0x01,0xE1,0xE1,0xF0,
0x00,0xA0,0x0B,0x0E,0xA2,0xA0,0x01,0xE3,0x31,0xC3,0x30,0x06,0x03,0x33,0x33,0x30,
0x00,0x00,0x54,0x00,0x00,0x00,0x01,0xE3,0xF1,0x81,0xE0,0x06,0xF3,0x33,0x33,0x30,
0x00,0x00,0x00,0x00,0x00,0x00,0x01,0xE3,0x01,0x81,0xE0,0x06,0x63,0x33,0x33,0x30,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xC3,0x31,0x80,0xC0,0x03,0x63,0x33,0x33,0x30,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xC1,0xE3,0xE0,0xC0,0x01,0xC1,0xE1,0xE1,0xF8,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x80,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x07,0x80,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
};
********************************************/
void draw_picture(const unsigned char *ptr)
{
unsigned char i,j,k;

clr_screen();

write_cmd(0x34);       //打開擴展指令集
i = 0x80;
for(j = 0;j < 32;j++)
{
      write_cmd(i++);
      write_cmd(0x80);
      for(k = 0;k < 16;k++)
      {
         write_data(*ptr++);
      }
}
i = 0x80;
for(j = 0;j < 32;j++)
{
      write_cmd(i++);
      write_cmd(0x88);
      for(k = 0;k < 16;k++)
      {
         write_data(*ptr++);
      }
}
write_cmd(0x36);       //打開繪圖顯示
write_cmd(0x30);       //回到基本指令集
}

/**************************************************
函數名稱：set_white
功能：任意位置反白
參數：行數y 起始x 結束end_x  模式clear 0反白 1復原
返回值  ：無
**************************************************/
void set_white(unsigned char y,unsigned char x,unsigned char end_x,unsigned char clear)
{
unsigned char i, j, white_x, white_y,white_end_x,clr_x,clr_y;             //
white_end_x = (end_x-x+1);
white_end_x <<= 1;
write_cmd(0x36);                //打開繪圖模式
if(y==1)
{
      white_x = (0x80+x-1);
      white_y = 0x80;
      clr_x = 0x80;
      clr_y = 0x80;
}
else if(y==2)
{
      white_x = (0x80+x-1);
      white_y = 0x90;
      clr_x = 0x80;
      clr_y = 0x90;
}
else if(y==3)
{
      white_x = (0x88+x-1);
      white_y = 0x80;
      clr_x = 0x88;
      clr_y = 0x80;
}
else if(y==4)
{
      white_x = (0x88+x-1);
      white_y = 0x90;
      clr_x = 0x88;
      clr_y = 0x90;
}
if(clear==0)                   //要反白時，先將整行的液晶全部清成不反白（此處行指y）
{
      for(i=0;i<16;i++ )             //16行
      {
         write_cmd(clr_y++);                //設置繪圖區的Y地址坐標0
         write_cmd(clr_x);                //設置繪圖區的X地址坐標0
         for(j=0;j<16;j++)                //
         {
            write_data(0x00);       //清成不反白
            //nop();
         }
      }
}
//nop();
for(i=0;i<16;i++ )                      //16行，因為是16*16漢字
{
      write_cmd(white_y++);             //設置繪圖區的Y地址坐標0
      write_cmd(white_x);             //設置繪圖區的X地址坐標0
      for(j=0;j<white_end_x;j++)       //
      {
         if(clear==1)
         {
            write_data(0x00);    //取消這一行的8個點的反白，液晶地址自動加1
            //（此處行指一個一個液晶點所組成的行）
         }
         else
         {
            write_data(0xff);    //反白這一行的8個點，液晶地址自動加1
            //（此處行指一個一個液晶點所組成的行）
         }
         // nop();
      }
}
write_cmd(0x30);                //回到基本模式
}

/**************************************************
函數名稱：draw_dot
功能：任意位置打點
參數：坐標xy  color 0反白 1復原
返回值  ：無
**************************************************/
void draw_dot(unsigned char x,unsigned char y,unsigned char color)
{
unsigned char  row,tier,tier_bit;
unsigned char  read_old_h,read_old_l;
write_cmd(0x34);
write_cmd(0x36);
tier=x>>4;
tier_bit=x&0x0f;
if(y<32)
      row=y;
else
{
      row=y-32;
      tier+=8;
}
write_cmd(row+0x80);
write_cmd(tier+0x80);
lcd_read_data();
read_old_h=lcd_read_data();
read_old_l=lcd_read_data();
write_cmd(row+0x80);
write_cmd(tier+0x80);

if(tier_bit<8)
{
      switch(color)
      {
         case 0:read_old_h&=(~(0x01<<(7-tier_bit)));break;
         case 1:read_old_h|=(0x01<<(7-tier_bit)) ;break;
         case 2:read_old_h^=(0x01<<(7-tier_bit)) ;break;
         default:break;
      }
      write_data(read_old_h);
      write_data(read_old_l);

}
else
{
      switch(color)
      {
         case 0:read_old_l&=(~(0x01<<(15-tier_bit)));break;
         case 1:read_old_l|=(0x01<<(15-tier_bit)) ;break;
         case 2:read_old_l^=(0x01<<(15-tier_bit)) ;break;
         default:break;
      }

      write_data(read_old_h);
      write_data(read_old_l);
}

write_cmd(0x30);

}

/**************************************************
函數名稱：draw_level_line
功能：水平線
參數：起始x0 x1 和y坐標  color 0反白 1復原
返回值  ：無
**************************************************/
void draw_level_line(unsigned char x0,unsigned char x1,unsigned char y,unsigned char color)
{
unsigned char temp;
if(x0>x1)
{
      temp=x1;
      x1=x0;
      x0=temp;
}
for(;x0<=x1;x0++)
{
      draw_dot(x0,y,color);
}

}

/**************************************************
函數名稱：draw_vertical_line
功能：垂直線
參數：起始y0 y1 和x坐標  color 0 1
返回值  ：無
**************************************************/
void draw_vertical_line(unsigned char y0,unsigned char y1,unsigned char x,unsigned char color)
{
unsigned char temp;
if(y0>y1)
{
      temp=y1;
      y1=y0;
      y0=temp;
}
for(;y0<=y1;y0++)
      draw_dot(x,y0,color);
}

/**************************************************
函數名稱：draw_line
功能：畫任意直線
參數：startx starty endx endy color
返回值  ：無
**************************************************/
void draw_line(unsigned char startx,unsigned char starty
            ,unsigned char endx,unsigned char endy,unsigned char color)
{
int t,distance;
int x=0,y=0,delta_x,delta_y;
int incx,incy;
delta_x=endx-startx;
delta_y=endy-starty;

if(delta_x>0)
{
      incx=1;
}
else if(delta_x==0)
{
      draw_vertical_line(startx,starty,endy,color);
      return;
}
else
{
      incx= -1;
}
if(delta_y>0)
{
      incy=1;
}
else if(delta_y==0)
{
      draw_level_line(startx,endx,starty,color);
      return;
}
else
{
      incy=-1;
}
delta_x=my_abs(delta_x);
delta_y=my_abs(delta_y);
if(delta_x>delta_y)
{
      distance=delta_x;
}
else
{
      distance=delta_y;
}
draw_dot(startx,starty,color);
for(t=0;t<=distance+1;t++)
{
      draw_dot(startx,starty,color);
      x+=delta_x;
      y+=delta_y;
      if(x>distance)
      {
         x-=distance;
         startx+=incx;
      }
      if(y>distance)
      {
         y-=distance;
         starty+=incy;
      }

}

}

/**************************************************
函數名稱：contin_line
功能：連續輸入Y 連成線，Y為0-63注意輸入進來時做轉換  線從startx至endx 0-127為最大范圍
參數：startx  endx endy color
返回值  ：無
**************************************************/
void contin_line(unsigned char startx ,unsigned char endx ,unsigned char Y)
{
   static unsigned char i=0,y0=0,y1=0,f=1; //i連線開始坐標
   if(f)                                  //用于將startx只在第一次傳遞給i
   {
      f=0;
      i = startx;
   }
// x0=i;
   y1=Y;                            //畫該函數的圖形，完全連接了，
   if(i!=startx)                   //保證不與00坐標連到一起
      draw_line(i-1,y0,i,y1,1);
   //x1=x0;
   y0=y1;

   if(i++>=endx)  //連線結束坐標
   {

      i=startx;
      clear_GDRAM();
   }
}

/**************************************************
函數名稱：draw_curve
功能：將一系列無符號字符數組str的數大小0-63注意傳遞前做處理，曲線開始位置 xstart 數組大小size
參數：起點startx size  *str
返回值  ：無
**************************************************/
void draw_curve(unsigned char xstart, unsigned char size ,unsigned char *str)
{
static unsigned char i=0,endx=0,y0=0,y1=0,f=1;
if(f) //只傳遞一次
{
      f=0;
      i = xstart;
}

endx = xstart + size;
if(endx>=128)  //保證圖形不溢出
      endx =127;
for(;i<endx;i++)
{
      y1 = str[i-xstart];
      if(i!=xstart)
         draw_line(i-1,y0,i,y1,1);
      y0 = y1;
}
i = xstart;
//Clear_GDRAM();

}

/**************************************************
函數名稱：draw_circle
功能：畫任意圓
參數：圓心坐標xy 半徑r color
返回值  ：無
**************************************************/
void draw_circle(unsigned char x,unsigned char y,unsigned char r,unsigned char color)
{
unsigned char a,b;
float c;
a = 0;
b = r;
//  c = 1.25 - r;
c = 3 - 2*r;
while(a < b)
{
      draw_dot(x+a,y+b,color);
      draw_dot(x-a,y+b,color);
      draw_dot(x+a,y-b,color);
      draw_dot(x-a,y-b,color);

      draw_dot(x+b,y+a,color);
      draw_dot(x-b,y+a,color);
      draw_dot(x+b,y-a,color);
      draw_dot(x-b,y-a,color);

      if(c < 0)
      {
         c = c+4*a + 6;
      }
      else
      {
         c= c + 4*(a - b) + 10;
         b-=1;
      }
      a = a + 1;  //控制打點間隔

}
if(a == b)
{
      draw_dot(x+a,y+b,color);
      draw_dot(x-a,y+b,color);
      draw_dot(x+a,y-b,color);
      draw_dot(x-a,y+b,color);

      draw_dot(x+b,y+a,color);
      draw_dot(x-b,y+a,color);
      draw_dot(x+b,y-a,color);
      draw_dot(x-b,y-a,color);

}
}

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