[51单片机] 从业将近十年！手把手教你单片机程序框架（连载）

#include "REG52.H"

 

sbit  LCDCS_dr  = P1^6;  //片选线

sbit  LCDSID_dr = P1^7;  //串行数据线

sbit  LCDCLK_dr = P3^2;  //串行时钟线

sbit  LCDRST_dr = P3^4;  //复位线



void SendByteToLcd(unsigned char ucData);  //发送一个字节数据到液晶模块

void SPIWrite(unsigned char ucWData, unsigned char ucWRS); //模拟SPI发送一个字节的命令或者数据给液晶模块的底层驱动

void WriteCommand(unsigned char ucCommand); //发送一个字节的命令给液晶模块

void LCDWriteData(unsigned char ucData);   //发送一个字节的数据给液晶模块

void LCDInit(void);  //初始化  函数内部包括液晶模块的复位

void display_lattice(unsigned int x,unsigned int y,const unsigned char  *ucArray,unsigned char ucFbFlag,unsigned int x_amount,unsigned int y_amount); //显示任意点阵函数

void display_clear(void); // 清屏



void delay_short(unsigned int uiDelayshort); //延时



/* 注释一：

 * 纠正上一节的一个小错误。C51编译器跟其它的编译器有点不一样。

 * 存在ROM程序存储区里的常量数据并不是用const关键字，而是是用code关键字。

 */

code unsigned char Hz3232_man[]= /*馒   横向取模  32x32点阵 */

{

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x06,0x07,0x03,0x00,0x0F,0x87,0xFF,0x80,

0x0F,0x07,0x03,0x80,0x0E,0x07,0x03,0x80,0x0E,0x37,0xFF,0x80,0x1C,0x7F,0x03,0x80,

0x1F,0xFF,0x03,0x80,0x18,0x77,0xFF,0x00,0x38,0xE0,0x00,0xC0,0x36,0xDF,0xFF,0xF0,

0x77,0x9C,0xCE,0xE0,0x67,0x1C,0xCE,0xE0,0xC7,0x1C,0xCE,0xE0,0x07,0x1C,0xCE,0xE0,

0x07,0x1F,0xFF,0xE0,0x07,0x18,0x00,0x00,0x07,0x00,0x03,0x80,0x07,0x0F,0xFF,0xC0,

0x07,0x71,0x8F,0x00,0x07,0xE0,0xDE,0x00,0x07,0xC0,0xFC,0x00,0x07,0x80,0x78,0x00,

0x0F,0x01,0xFE,0x00,0x07,0x03,0x8F,0xE0,0x00,0x1E,0x03,0xF0,0x00,0xF8,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

};





code unsigned char Hz3232_tou[]= /*头   横向取模  32x32点阵 */

{

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0xC0,0x00,0x00,0x03,0xE0,0x00,

0x03,0xC3,0xC0,0x00,0x00,0xF3,0x80,0x00,0x00,0x7B,0x80,0x00,0x00,0x7B,0x80,0x00,

0x00,0x3B,0x80,0x00,0x0E,0x03,0x80,0x00,0x07,0x83,0x80,0x00,0x03,0xC3,0x80,0x00,

0x01,0xE3,0x80,0x00,0x01,0xE3,0x80,0x00,0x00,0xC3,0x80,0x00,0x00,0x03,0x81,0xE0,

0x7F,0xFF,0xFF,0xF0,0x00,0x07,0x80,0x30,0x00,0x07,0x00,0x00,0x00,0x07,0x80,0x00,

0x00,0x0E,0xE0,0x00,0x00,0x1E,0x7C,0x00,0x00,0x3C,0x1F,0x00,0x00,0x78,0x0F,0xC0,

0x00,0xF0,0x03,0xC0,0x03,0xC0,0x01,0xE0,0x0F,0x00,0x00,0xE0,0x78,0x00,0x00,0x00,

0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

};



code unsigned char Hz2424_man[]= /*馒   横向取模  24x24点阵 */

{

0x00,0x00,0x00,0x00,0x00,0x00,0x0C,0x18,0x30,0x1E,0x1F,0xF8,0x1C,0x1C,0x38,0x1C,

0x1F,0xF8,0x19,0xFC,0x38,0x3F,0xFF,0xF8,0x31,0x98,0x30,0x7B,0xE0,0x0E,0x6F,0x7F,

0xFE,0x6E,0x76,0xEE,0xCC,0x76,0xEE,0x0C,0x7F,0xFE,0x0C,0x70,0x0C,0x0C,0x00,0x38,

0x0C,0x3F,0xF8,0x0D,0xCE,0x70,0x0F,0x87,0xE0,0x0F,0x03,0x80,0x1E,0x07,0xE0,0x0C,

0x1C,0x7E,0x01,0xF0,0x1F,0x00,0x00,0x00,

};





code unsigned char Hz2424_tou[]= /*头   横向取模  24x24点阵 */

{

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0E,0x00,0x06,0x0F,0x00,0x07,0x8E,0x00,0x01,

0xEE,0x00,0x00,0xEE,0x00,0x00,0xEC,0x00,0x1C,0x0C,0x00,0x0F,0x0C,0x00,0x07,0x9C,

0x00,0x03,0x9C,0x00,0x00,0x1C,0x0C,0x00,0x1C,0x1E,0x7F,0xFF,0xF6,0x00,0x1C,0x00,

0x00,0x3C,0x00,0x00,0x3F,0x80,0x00,0x71,0xE0,0x00,0xE0,0xF8,0x01,0xC0,0x3C,0x07,

0x00,0x1C,0x3C,0x00,0x0C,0x70,0x00,0x00,

};





code unsigned char Hz1616_man[]= /*馒   横向取模  16X16点阵 */

{

0x21,0xF8,0x21,0x08,0x21,0xF8,0x3D,0x08,0x45,0xF8,0x48,0x00,0x83,0xFC,0x22,0x94,

0x23,0xFC,0x20,0x00,0x21,0xF8,0x20,0x90,0x28,0x60,0x30,0x90,0x23,0x0E,0x00,0x00,

};



code unsigned char Hz1616_tou[]= /*头   横向取模  16X16点阵 */

{

0x00,0x80,0x10,0x80,0x0C,0x80,0x04,0x80,0x10,0x80,0x0C,0x80,0x08,0x80,0x00,0x80,

0xFF,0xFE,0x00,0x80,0x01,0x40,0x02,0x20,0x04,0x30,0x08,0x18,0x10,0x0C,0x20,0x08,

};



code unsigned char Zf816_V[]= /*V   横向取模  8x16点阵 */

{

0x00,0x00,0x00,0xE7,0x42,0x42,0x44,0x24,0x24,0x28,0x28,0x18,0x10,0x10,0x00,0x00,

};



code unsigned char Zf816_5[]= /*5   横向取模  8x16点阵 */

{

0x00,0x00,0x00,0x7E,0x40,0x40,0x40,0x58,0x64,0x02,0x02,0x42,0x44,0x38,0x00,0x00,

};







void main() 

  {

        LCDInit(); //初始化12864 内部包含液晶模块的复位



    display_clear(); // 清屏



        display_lattice(0,0,Hz3232_man,0,4,32);  //显示32点阵的<馒>字

        display_lattice(2,0,Hz3232_tou,0,4,32);  //显示32点阵的<头>字



        display_lattice(4,0,Hz2424_man,0,3,24);  //显示24点阵的<馒>字

        display_lattice(6,0,Hz2424_tou,0,3,24);  //显示24点阵的<头>字



        display_lattice(8,0,Hz1616_man,0,2,16);  //显示16点阵的<馒>字

        display_lattice(9,0,Hz1616_tou,0,2,16);  //显示16点阵的<头>字



        display_lattice(11,0,Zf816_V,0,1,16);  //显示8x16点阵的<V>字符

        display_lattice(12,0,Zf816_5,0,1,16);  //显示8x16点阵的<5>字符



    while(1)  

    { 

       ;

    }



}







void display_clear(void) // 清屏

{    



        unsigned char x,y;

    WriteCommand(0x34);  //关显示缓冲指令            

    WriteCommand(0x34);  //关显示缓冲指令  故意写2次，怕1次关不了 这个是因为我参考到某厂家的驱动程序也是这样写的

         y=0;

        while(y<32)  //y轴的范围0至31

    {

                 WriteCommand(y+0x80);        //垂直地址

         WriteCommand(0x80);          //水平地址

         for(x=0;x<32;x++)  //256个横向点，有32个字节

         {  

            LCDWriteData(0x00);

             }

                 y++;

    }

    WriteCommand(0x36); //开显示缓冲指令



}





/* 注释二：本节的核心函数，读者尤其要搞懂x_amount和y_amount对应的显示关系。

 * 第1，2个参数x,y是坐标体系。x的范围是0至15，y的范围是0至31.

 * 第3个参数*ucArray是字模的数组。

 * 第4个参数ucFbFlag是反白显示标志。0代表正常显示，1代表反白显示。

 * 第5，6个参数x_amount，y_amount分别代表字模数组的横向有多少个字节，纵向有几横。

 */

void display_lattice(unsigned int x,unsigned int y,const unsigned char  *ucArray,unsigned char ucFbFlag,unsigned int x_amount,unsigned int y_amount)

{

   unsigned int j=0;

   unsigned int i=0;

   unsigned char ucTemp;

   WriteCommand(0x34);  //关显示缓冲指令            

   WriteCommand(0x34);  //关显示缓冲指令  故意写2次，怕1次关不了 这个是因为我参考到某厂家的驱动程序也是这样写的

   for(j=0;j<y_amount;j++) //y_amount代表y轴有多少横

   {

       WriteCommand(y+j+0x80);        //垂直地址

       WriteCommand(x+0x80);          //水平地址

       for(i=0;i<x_amount;i++) //x_amount代表x轴有多少列

       {

         ucTemp=ucArray[j*x_amount+i];

             if(ucFbFlag==1)  //反白显示

                 {

            ucTemp=~ucTemp;

         }

             LCDWriteData(ucTemp);

          //         delay_short(30000);  //把上一节这个延时函数去掉，加快刷屏速度

      }

   }

   WriteCommand(0x36); //开显示缓冲指令

}





void SendByteToLcd(unsigned char ucData)  //发送一个字节数据到液晶模块

{

        unsigned char i;

        for ( i = 0; i < 8; i++ )

        {

                if ( (ucData << i) & 0x80 )

                {

                        LCDSID_dr = 1;

                }

                else

                {

                        LCDSID_dr = 0;

                }

                LCDCLK_dr = 0;

                LCDCLK_dr = 1;

        }

}



void SPIWrite(unsigned char ucWData, unsigned char ucWRS) //模拟SPI发送一个字节的命令或者数据给液晶模块的底层驱动

{

        SendByteToLcd( 0xf8 + (ucWRS << 1) );

        SendByteToLcd( ucWData & 0xf0 );

        SendByteToLcd( (ucWData << 4) & 0xf0);

}

 



void WriteCommand(unsigned char ucCommand) //发送一个字节的命令给液晶模块

{



        LCDCS_dr = 0;

        LCDCS_dr = 1;

        SPIWrite(ucCommand, 0);

        delay_short(90); 

}



void LCDWriteData(unsigned char ucData)  //发送一个字节的数据给液晶模块

{

        LCDCS_dr = 0;

        LCDCS_dr = 1;

        SPIWrite(ucData, 1);

}



void LCDInit(void) //初始化  函数内部包括液晶模块的复位

{

        LCDRST_dr = 1;  //复位

        LCDRST_dr = 0;

        LCDRST_dr = 1;

}







void delay_short(unsigned int uiDelayShort) //延时函数

{

   unsigned int i;  

   for(i=0;i<uiDelayShort;i++)

   {

     ;  

   }

}