OLED屏幕实验演示

Tutorial: 电子电路 Category: 嵌入式 Published: 2026-08-29 08:09:36 Views: 0 Likes: 0 Comments: 0

062.9.1 OLED屏幕实验演示

/* ==================== main.c ==================== */
#include "REG51.h"
#include "oled.h"
#include "bmp.h"

int main(void)
{	 
	u8 t;
	OLED_Init();			//初始化OLED  
	OLED_Clear(); 

	t=' ';
	OLED_ShowCHinese(0,0,0);//中
	OLED_ShowCHinese(18,0,1);//景
	OLED_ShowCHinese(36,0,2);//园
	OLED_ShowCHinese(54,0,3);//电
	OLED_ShowCHinese(72,0,4);//子
	OLED_ShowCHinese(90,0,5);//科
	OLED_ShowCHinese(108,0,6);//技
	while(1) 
	{		
		OLED_Clear();
		OLED_ShowCHinese(0,0,0);//中
		OLED_ShowCHinese(18,0,1);//景
		OLED_ShowCHinese(36,0,2);//园
		OLED_ShowCHinese(54,0,3);//电
		OLED_ShowCHinese(72,0,4);//子
		OLED_ShowCHinese(90,0,5);//科
		OLED_ShowCHinese(108,0,6);//技
		OLED_ShowString(6,3,"0.96' OLED TEST",16);
		//OLED_ShowString(8,2,"ZHONGJINGYUAN");  
		//OLED_ShowString(20,4,"2014/05/01");  
		OLED_ShowString(0,6,"ASCII:",16);  
		OLED_ShowString(63,6,"CODE:",16);  
		OLED_ShowChar(48,6,t,16);//显示ASCII字符	 
		
		t++;
		if(t>'~')t=' ';
		OLED_ShowNum(103,6,t,3,16);//显示ASCII字符的码值 	
		delay_ms(80);
		OLED_DrawBMP(0,0,128,8,BMP1);  //图片显示(图片显示慎用，生成的字表较大，会占用较多空间，FLASH空间8K以下慎用)
		delay_ms(80);
		OLED_DrawBMP(0,0,128,8,BMP1);		
		delay_ms(80);
	}	  

}
	

/* ==================== SRC\oled.h ==================== */
#include "REG51.h"
#ifndef __OLED_H
#define __OLED_H			  	 
//#include "sys.h"
//#include "stdlib.h"	  
#define  u8 unsigned char 
#define  u32 unsigned int 
#define OLED_CMD  0	//写命令
#define OLED_DATA 1	//写数据
#define OLED_MODE 0

sbit OLED_SCL=P1^5;//时钟 D0（SCLK?
sbit OLED_SDIN=P1^4;//D1（MOSI） 数据

#define OLED_SCLK_Clr() OLED_SCL=0
#define OLED_SCLK_Set() OLED_SCL=1

#define OLED_SDIN_Clr() OLED_SDIN=0
#define OLED_SDIN_Set() OLED_SDIN=1





//OLED模式设置
//0:4线串行模式
//1:并行8080模式

#define SIZE 16
#define XLevelL		0x02
#define XLevelH		0x10
#define Max_Column	128
#define Max_Row		64
#define	Brightness	0xFF 
#define X_WIDTH 	128
#define Y_WIDTH 	64	    						  
//-----------------OLED端口定义----------------  					   

void delay_ms(unsigned int ms);

//OLED控制用函数
void OLED_WR_Byte(unsigned dat,unsigned cmd);  
void OLED_Display_On(void);
void OLED_Display_Off(void);	   							   		    
void OLED_Init(void);
void OLED_Clear(void);
void OLED_DrawPoint(u8 x,u8 y,u8 t);
void OLED_Fill(u8 x1,u8 y1,u8 x2,u8 y2,u8 dot);
void OLED_ShowChar(u8 x,u8 y,u8 chr,u8 Char_Size);
void OLED_ShowNum(u8 x,u8 y,u32 num,u8 len,u8 size);
void OLED_ShowString(u8 x,u8 y, u8 *p,u8 Char_Size);	 
void OLED_Set_Pos(unsigned char x, unsigned char y);
void OLED_ShowCHinese(u8 x,u8 y,u8 no);
void OLED_DrawBMP(unsigned char x0, unsigned char y0,unsigned char x1, unsigned char y1,unsigned char BMP[]);
void Delay_50ms(unsigned int Del_50ms);
void Delay_1ms(unsigned int Del_1ms);
void fill_picture(unsigned char fill_Data);
void Picture();
void IIC_Start();
void IIC_Stop();
void Write_IIC_Command(unsigned char IIC_Command);
void Write_IIC_Data(unsigned char IIC_Data);
void Write_IIC_Byte(unsigned char IIC_Byte);
void IIC_Wait_Ack();

#endif  
	 





/* ==================== SRC\oled.c ==================== */
#include "oled.h"
#include "oledfont.h"  	 

//OLED的显存
//存放格式如下.
//[0]0 1 2 3 ... 127	
//[1]0 1 2 3 ... 127	
//[2]0 1 2 3 ... 127	
//[3]0 1 2 3 ... 127	
//[4]0 1 2 3 ... 127	
//[5]0 1 2 3 ... 127	
//[6]0 1 2 3 ... 127	
//[7]0 1 2 3 ... 127 			   
void delay_ms(unsigned int ms)
{                         
	unsigned int a;
	while(ms)
	{
		a=1800;
		while(a--);
		ms--;
	}
	return;
}
/**********************************************
//IIC Start
**********************************************/
void IIC_Start()
{
	OLED_SCLK_Set() ;
	OLED_SDIN_Set();
	OLED_SDIN_Clr();
	OLED_SCLK_Clr();
}

/**********************************************
//IIC Stop
**********************************************/
void IIC_Stop()
{
  OLED_SCLK_Set() ;
  //OLED_SCLK_Clr();
	OLED_SDIN_Clr();
	OLED_SDIN_Set();
	
}

void IIC_Wait_Ack()
{
	OLED_SCLK_Set() ;
	OLED_SCLK_Clr();
}
/**********************************************
// IIC Write byte
**********************************************/

void Write_IIC_Byte(unsigned char IIC_Byte)
{
	unsigned char i;
	unsigned char m,da;
	da=IIC_Byte;
	OLED_SCLK_Clr();
	for(i=0;i<8;i++)		
	{
		m=da;
		//	OLED_SCLK_Clr();
		m=m&0x80;
		if(m==0x80)
		{OLED_SDIN_Set();}
		else OLED_SDIN_Clr();
			da=da<<1;
		OLED_SCLK_Set();
		OLED_SCLK_Clr();
	}
}
/**********************************************
// IIC Write Command
**********************************************/
void Write_IIC_Command(unsigned char IIC_Command)
{
	IIC_Start();
	Write_IIC_Byte(0x78);      //Slave address,SA0=0
	IIC_Wait_Ack();	
	Write_IIC_Byte(0x00);			//write command
	IIC_Wait_Ack();	
	Write_IIC_Byte(IIC_Command); 
	IIC_Wait_Ack();	
	IIC_Stop();
}
/**********************************************
// IIC Write Data
**********************************************/
void Write_IIC_Data(unsigned char IIC_Data)
{
	IIC_Start();
	Write_IIC_Byte(0x78);			//D/C#=0; R/W#=0
	IIC_Wait_Ack();	
	Write_IIC_Byte(0x40);			//write data
	IIC_Wait_Ack();	
	Write_IIC_Byte(IIC_Data);
	IIC_Wait_Ack();	
	IIC_Stop();
}

void OLED_WR_Byte(unsigned dat,unsigned cmd)
{
	if(cmd)
	{
    Write_IIC_Data(dat);  
	}
	else
	{
    Write_IIC_Command(dat);		
	}
}

/********************************************
// fill_Picture
********************************************/
void fill_picture(unsigned char fill_Data)
{
	unsigned char m,n;
	for(m=0;m<8;m++)
	{
		OLED_WR_Byte(0xb0+m,0);		//page0-page1
		OLED_WR_Byte(0x00,0);		//low column start address
		OLED_WR_Byte(0x10,0);		//high column start address
		for(n=0;n<128;n++)
		{
			OLED_WR_Byte(fill_Data,1);
		}
	}
}


/***********************Delay****************************************/
void Delay_50ms(unsigned int Del_50ms)
{
	unsigned int m;
	for(;Del_50ms>0;Del_50ms--)
		for(m=6245;m>0;m--);
}

void Delay_1ms(unsigned int Del_1ms)
{
	unsigned char j;
	while(Del_1ms--)
	{	
		for(j=0;j<123;j++);
	}
}

//坐标设置
	void OLED_Set_Pos(unsigned char x, unsigned char y) 
{ 
	OLED_WR_Byte(0xb0+y,OLED_CMD);
	OLED_WR_Byte(((x&0xf0)>>4)|0x10,OLED_CMD);
	OLED_WR_Byte((x&0x0f),OLED_CMD); 
}   	  
//开启OLED显示    
void OLED_Display_On(void)
{
	OLED_WR_Byte(0X8D,OLED_CMD);  //SET DCDC命令
	OLED_WR_Byte(0X14,OLED_CMD);  //DCDC ON
	OLED_WR_Byte(0XAF,OLED_CMD);  //DISPLAY ON
}
//关闭OLED显示     
void OLED_Display_Off(void)
{
	OLED_WR_Byte(0X8D,OLED_CMD);  //SET DCDC命令
	OLED_WR_Byte(0X10,OLED_CMD);  //DCDC OFF
	OLED_WR_Byte(0XAE,OLED_CMD);  //DISPLAY OFF
}		   			 
//清屏函数,清完屏,整个屏幕是黑色的!和没点亮一样!!!	  
void OLED_Clear(void)  
{  
	u8 i,n;		    
	for(i=0;i<8;i++)  
	{  
		OLED_WR_Byte (0xb0+i,OLED_CMD);    //设置页地址（0~7）
		OLED_WR_Byte (0x00,OLED_CMD);      //设置显示位置—列低地址
		OLED_WR_Byte (0x10,OLED_CMD);      //设置显示位置—列高地址   
		for(n=0;n<128;n++)
		  OLED_WR_Byte(0,OLED_DATA); 
	} //更新显示
}
void OLED_On(void)  
{  
	u8 i,n;		    
	for(i=0;i<8;i++)  
	{  
		OLED_WR_Byte (0xb0+i,OLED_CMD);    //设置页地址（0~7）
		OLED_WR_Byte (0x00,OLED_CMD);      //设置显示位置—列低地址
		OLED_WR_Byte (0x10,OLED_CMD);      //设置显示位置—列高地址   
		for(n=0;n<128;n++)
		 OLED_WR_Byte(1,OLED_DATA); 
	} //更新显示
}
//在指定位置显示一个字符,包括部分字符
//x:0~127
//y:0~63
//mode:0,反白显示;1,正常显示				 
//size:选择字体 16/12 
void OLED_ShowChar(u8 x,u8 y,u8 chr,u8 Char_Size)
{      	
	unsigned char c=0,i=0;	
	c=chr-' ';//得到偏移后的值			
	if(x>Max_Column-1)
	{
		x=0;
		y=y+2;
	}
	if(Char_Size ==16)
	{
		OLED_Set_Pos(x,y);	
		for(i=0;i<8;i++)
		OLED_WR_Byte(F8X16[c*16+i],OLED_DATA);
		OLED_Set_Pos(x,y+1);
		for(i=0;i<8;i++)
		OLED_WR_Byte(F8X16[c*16+i+8],OLED_DATA);
	}
	else 
	{	
		OLED_Set_Pos(x,y);
		for(i=0;i<6;i++)
		OLED_WR_Byte(F6x8[c][i],OLED_DATA);			
	}
}
//m^n函数
u32 oled_pow(u8 m,u8 n)
{
	u32 result=1;	 
	while(n--)
	{
	  result*=m;
	}    
	return result;
}				  
//显示2个数字
//x,y :起点坐标	 
//len :数字的位数
//size:字体大小
//mode:模式	0,填充模式;1,叠加模式
//num:数值(0~4294967295);	 		  
void OLED_ShowNum(u8 x,u8 y,u32 num,u8 len,u8 size2)
{         	
	u8 t,temp;
	u8 enshow=0;						   
	for(t=0;t<len;t++)
	{
		temp=(num/oled_pow(10,len-t-1))%10;
		if(enshow==0&&t<(len-1))
		{
			if(temp==0)
			{
				OLED_ShowChar(x+(size2/2)*t,y,' ',size2);
				continue;
			}
			else 
				enshow=1; 		 	 
		}
	 	OLED_ShowChar(x+(size2/2)*t,y,temp+'0',size2); 
	}
} 
//显示一个字符号串
void OLED_ShowString(u8 x,u8 y,u8 *chr,u8 Char_Size)
{
	unsigned char j=0;
	while (chr[j]!='\0')
	{		
		OLED_ShowChar(x,y,chr[j],Char_Size);
		x+=8;
		if(x>120){x=0;y+=2;}
		 j++;
	}
}
//显示汉字
void OLED_ShowCHinese(u8 x,u8 y,u8 no)
{      			    
	u8 t,adder=0;
	OLED_Set_Pos(x,y);	
	for(t=0;t<16;t++)
	{
		OLED_WR_Byte(Hzk[2*no][t],OLED_DATA);
		adder+=1;
	}	
	OLED_Set_Pos(x,y+1);	
	for(t=0;t<16;t++)
	{	
		OLED_WR_Byte(Hzk[2*no+1][t],OLED_DATA);
		adder+=1;
	}					
}
/***********功能描述：显示显示BMP图片128×64起始点坐标(x,y),x的范围0～127，y为页的范围0～7*****************/
void OLED_DrawBMP(unsigned char x0, unsigned char y0,unsigned char x1, unsigned char y1,unsigned char BMP[])
{ 	
 unsigned int j=0;
 unsigned char x,y;
  
  if(y1%8==0)
		y=y1/8;      
  else 
		y=y1/8+1;
	for(y=y0;y<y1;y++)
	{
		OLED_Set_Pos(x0,y);
    for(x=x0;x<x1;x++)
	  {      
	    OLED_WR_Byte(BMP[j++],OLED_DATA);	    	
	  }
	}
} 

//初始化SSD1306					    
void OLED_Init(void)
{ 	
 
	OLED_WR_Byte(0xAE,OLED_CMD);//--display off
	OLED_WR_Byte(0x00,OLED_CMD);//---set low column address
	OLED_WR_Byte(0x10,OLED_CMD);//---set high column address
	OLED_WR_Byte(0x40,OLED_CMD);//--set start line address  
	OLED_WR_Byte(0xB0,OLED_CMD);//--set page address
	OLED_WR_Byte(0x81,OLED_CMD); // contract control
	OLED_WR_Byte(0xFF,OLED_CMD);//--128   
	OLED_WR_Byte(0xA1,OLED_CMD);//set segment remap 
	OLED_WR_Byte(0xA6,OLED_CMD);//--normal / reverse
	OLED_WR_Byte(0xA8,OLED_CMD);//--set multiplex ratio(1 to 64)
	OLED_WR_Byte(0x3F,OLED_CMD);//--1/32 duty
	OLED_WR_Byte(0xC8,OLED_CMD);//Com scan direction
	OLED_WR_Byte(0xD3,OLED_CMD);//-set display offset
	OLED_WR_Byte(0x00,OLED_CMD);//
	
	OLED_WR_Byte(0xD5,OLED_CMD);//set osc division
	OLED_WR_Byte(0x80,OLED_CMD);//
	
	OLED_WR_Byte(0xD8,OLED_CMD);//set area color mode off
	OLED_WR_Byte(0x05,OLED_CMD);//
	
	OLED_WR_Byte(0xD9,OLED_CMD);//Set Pre-Charge Period
	OLED_WR_Byte(0xF1,OLED_CMD);//
	
	OLED_WR_Byte(0xDA,OLED_CMD);//set com pin configuartion
	OLED_WR_Byte(0x12,OLED_CMD);//
	
	OLED_WR_Byte(0xDB,OLED_CMD);//set Vcomh
	OLED_WR_Byte(0x30,OLED_CMD);//
	
	OLED_WR_Byte(0x8D,OLED_CMD);//set charge pump enable
	OLED_WR_Byte(0x14,OLED_CMD);//
	
	OLED_WR_Byte(0xAF,OLED_CMD);//--turn on oled panel
}  































/* ==================== SRC\oledfont.h ==================== */
#ifndef __OLEDFONT_H
#define __OLEDFONT_H 	   
//常用ASCII表
//偏移量32
//ASCII字符集
//偏移量32
//大小:12*6
/************************************6*8的点阵************************************/
const unsigned char code F6x8[][6] =		
{
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,// sp
0x00, 0x00, 0x00, 0x2f, 0x00, 0x00,// !
0x00, 0x00, 0x07, 0x00, 0x07, 0x00,// "
0x00, 0x14, 0x7f, 0x14, 0x7f, 0x14,// #
0x00, 0x24, 0x2a, 0x7f, 0x2a, 0x12,// $
0x00, 0x62, 0x64, 0x08, 0x13, 0x23,// %
0x00, 0x36, 0x49, 0x55, 0x22, 0x50,// &
0x00, 0x00, 0x05, 0x03, 0x00, 0x00,// '
0x00, 0x00, 0x1c, 0x22, 0x41, 0x00,// (
0x00, 0x00, 0x41, 0x22, 0x1c, 0x00,// )
0x00, 0x14, 0x08, 0x3E, 0x08, 0x14,// *
0x00, 0x08, 0x08, 0x3E, 0x08, 0x08,// +
0x00, 0x00, 0x00, 0xA0, 0x60, 0x00,// ,
0x00, 0x08, 0x08, 0x08, 0x08, 0x08,// -
0x00, 0x00, 0x60, 0x60, 0x00, 0x00,// .
0x00, 0x20, 0x10, 0x08, 0x04, 0x02,// /
0x00, 0x3E, 0x51, 0x49, 0x45, 0x3E,// 0
0x00, 0x00, 0x42, 0x7F, 0x40, 0x00,// 1
0x00, 0x42, 0x61, 0x51, 0x49, 0x46,// 2
0x00, 0x21, 0x41, 0x45, 0x4B, 0x31,// 3
0x00, 0x18, 0x14, 0x12, 0x7F, 0x10,// 4
0x00, 0x27, 0x45, 0x45, 0x45, 0x39,// 5
0x00, 0x3C, 0x4A, 0x49, 0x49, 0x30,// 6
0x00, 0x01, 0x71, 0x09, 0x05, 0x03,// 7
0x00, 0x36, 0x49, 0x49, 0x49, 0x36,// 8
0x00, 0x06, 0x49, 0x49, 0x29, 0x1E,// 9
0x00, 0x00, 0x36, 0x36, 0x00, 0x00,// :
0x00, 0x00, 0x56, 0x36, 0x00, 0x00,// ;
0x00, 0x08, 0x14, 0x22, 0x41, 0x00,// <
0x00, 0x14, 0x14, 0x14, 0x14, 0x14,// =
0x00, 0x00, 0x41, 0x22, 0x14, 0x08,// >
0x00, 0x02, 0x01, 0x51, 0x09, 0x06,// ?
0x00, 0x32, 0x49, 0x59, 0x51, 0x3E,// @
0x00, 0x7C, 0x12, 0x11, 0x12, 0x7C,// A
0x00, 0x7F, 0x49, 0x49, 0x49, 0x36,// B
0x00, 0x3E, 0x41, 0x41, 0x41, 0x22,// C
0x00, 0x7F, 0x41, 0x41, 0x22, 0x1C,// D
0x00, 0x7F, 0x49, 0x49, 0x49, 0x41,// E
0x00, 0x7F, 0x09, 0x09, 0x09, 0x01,// F
0x00, 0x3E, 0x41, 0x49, 0x49, 0x7A,// G
0x00, 0x7F, 0x08, 0x08, 0x08, 0x7F,// H
0x00, 0x00, 0x41, 0x7F, 0x41, 0x00,// I
0x00, 0x20, 0x40, 0x41, 0x3F, 0x01,// J
0x00, 0x7F, 0x08, 0x14, 0x22, 0x41,// K
0x00, 0x7F, 0x40, 0x40, 0x40, 0x40,// L
0x00, 0x7F, 0x02, 0x0C, 0x02, 0x7F,// M
0x00, 0x7F, 0x04, 0x08, 0x10, 0x7F,// N
0x00, 0x3E, 0x41, 0x41, 0x41, 0x3E,// O
0x00, 0x7F, 0x09, 0x09, 0x09, 0x06,// P
0x00, 0x3E, 0x41, 0x51, 0x21, 0x5E,// Q
0x00, 0x7F, 0x09, 0x19, 0x29, 0x46,// R
0x00, 0x46, 0x49, 0x49, 0x49, 0x31,// S
0x00, 0x01, 0x01, 0x7F, 0x01, 0x01,// T
0x00, 0x3F, 0x40, 0x40, 0x40, 0x3F,// U
0x00, 0x1F, 0x20, 0x40, 0x20, 0x1F,// V
0x00, 0x3F, 0x40, 0x38, 0x40, 0x3F,// W
0x00, 0x63, 0x14, 0x08, 0x14, 0x63,// X
0x00, 0x07, 0x08, 0x70, 0x08, 0x07,// Y
0x00, 0x61, 0x51, 0x49, 0x45, 0x43,// Z
0x00, 0x00, 0x7F, 0x41, 0x41, 0x00,// [
0x00, 0x55, 0x2A, 0x55, 0x2A, 0x55,// 55
0x00, 0x00, 0x41, 0x41, 0x7F, 0x00,// ]
0x00, 0x04, 0x02, 0x01, 0x02, 0x04,// ^
0x00, 0x40, 0x40, 0x40, 0x40, 0x40,// _
0x00, 0x00, 0x01, 0x02, 0x04, 0x00,// '
0x00, 0x20, 0x54, 0x54, 0x54, 0x78,// a
0x00, 0x7F, 0x48, 0x44, 0x44, 0x38,// b
0x00, 0x38, 0x44, 0x44, 0x44, 0x20,// c
0x00, 0x38, 0x44, 0x44, 0x48, 0x7F,// d
0x00, 0x38, 0x54, 0x54, 0x54, 0x18,// e
0x00, 0x08, 0x7E, 0x09, 0x01, 0x02,// f
0x00, 0x18, 0xA4, 0xA4, 0xA4, 0x7C,// g
0x00, 0x7F, 0x08, 0x04, 0x04, 0x78,// h
0x00, 0x00, 0x44, 0x7D, 0x40, 0x00,// i
0x00, 0x40, 0x80, 0x84, 0x7D, 0x00,// j
0x00, 0x7F, 0x10, 0x28, 0x44, 0x00,// k
0x00, 0x00, 0x41, 0x7F, 0x40, 0x00,// l
0x00, 0x7C, 0x04, 0x18, 0x04, 0x78,// m
0x00, 0x7C, 0x08, 0x04, 0x04, 0x78,// n
0x00, 0x38, 0x44, 0x44, 0x44, 0x38,// o
0x00, 0xFC, 0x24, 0x24, 0x24, 0x18,// p
0x00, 0x18, 0x24, 0x24, 0x18, 0xFC,// q
0x00, 0x7C, 0x08, 0x04, 0x04, 0x08,// r
0x00, 0x48, 0x54, 0x54, 0x54, 0x20,// s
0x00, 0x04, 0x3F, 0x44, 0x40, 0x20,// t
0x00, 0x3C, 0x40, 0x40, 0x20, 0x7C,// u
0x00, 0x1C, 0x20, 0x40, 0x20, 0x1C,// v
0x00, 0x3C, 0x40, 0x30, 0x40, 0x3C,// w
0x00, 0x44, 0x28, 0x10, 0x28, 0x44,// x
0x00, 0x1C, 0xA0, 0xA0, 0xA0, 0x7C,// y
0x00, 0x44, 0x64, 0x54, 0x4C, 0x44,// z
0x14, 0x14, 0x14, 0x14, 0x14, 0x14,// horiz lines
};
/****************************************8*16的点阵************************************/
const unsigned char code F8X16[]=	  
{
  0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,// 0
  0x00,0x00,0x00,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x33,0x30,0x00,0x00,0x00,//! 1
  0x00,0x10,0x0C,0x06,0x10,0x0C,0x06,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//" 2
  0x40,0xC0,0x78,0x40,0xC0,0x78,0x40,0x00,0x04,0x3F,0x04,0x04,0x3F,0x04,0x04,0x00,//# 3
  0x00,0x70,0x88,0xFC,0x08,0x30,0x00,0x00,0x00,0x18,0x20,0xFF,0x21,0x1E,0x00,0x00,//$ 4
  0xF0,0x08,0xF0,0x00,0xE0,0x18,0x00,0x00,0x00,0x21,0x1C,0x03,0x1E,0x21,0x1E,0x00,//% 5
  0x00,0xF0,0x08,0x88,0x70,0x00,0x00,0x00,0x1E,0x21,0x23,0x24,0x19,0x27,0x21,0x10,//& 6
  0x10,0x16,0x0E,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//' 7
  0x00,0x00,0x00,0xE0,0x18,0x04,0x02,0x00,0x00,0x00,0x00,0x07,0x18,0x20,0x40,0x00,//( 8
  0x00,0x02,0x04,0x18,0xE0,0x00,0x00,0x00,0x00,0x40,0x20,0x18,0x07,0x00,0x00,0x00,//) 9
  0x40,0x40,0x80,0xF0,0x80,0x40,0x40,0x00,0x02,0x02,0x01,0x0F,0x01,0x02,0x02,0x00,//* 10
  0x00,0x00,0x00,0xF0,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x1F,0x01,0x01,0x01,0x00,//+ 11
  0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0xB0,0x70,0x00,0x00,0x00,0x00,0x00,//, 12
  0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x01,0x01,0x01,0x01,//- 13
  0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00,0x00,0x00,//. 14
  0x00,0x00,0x00,0x00,0x80,0x60,0x18,0x04,0x00,0x60,0x18,0x06,0x01,0x00,0x00,0x00,/// 15
  0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x0F,0x10,0x20,0x20,0x10,0x0F,0x00,//0 16
  0x00,0x10,0x10,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//1 17
  0x00,0x70,0x08,0x08,0x08,0x88,0x70,0x00,0x00,0x30,0x28,0x24,0x22,0x21,0x30,0x00,//2 18
  0x00,0x30,0x08,0x88,0x88,0x48,0x30,0x00,0x00,0x18,0x20,0x20,0x20,0x11,0x0E,0x00,//3 19
  0x00,0x00,0xC0,0x20,0x10,0xF8,0x00,0x00,0x00,0x07,0x04,0x24,0x24,0x3F,0x24,0x00,//4 20
  0x00,0xF8,0x08,0x88,0x88,0x08,0x08,0x00,0x00,0x19,0x21,0x20,0x20,0x11,0x0E,0x00,//5 21
  0x00,0xE0,0x10,0x88,0x88,0x18,0x00,0x00,0x00,0x0F,0x11,0x20,0x20,0x11,0x0E,0x00,//6 22
  0x00,0x38,0x08,0x08,0xC8,0x38,0x08,0x00,0x00,0x00,0x00,0x3F,0x00,0x00,0x00,0x00,//7 23
  0x00,0x70,0x88,0x08,0x08,0x88,0x70,0x00,0x00,0x1C,0x22,0x21,0x21,0x22,0x1C,0x00,//8 24
  0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x00,0x31,0x22,0x22,0x11,0x0F,0x00,//9 25
  0x00,0x00,0x00,0xC0,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00,//: 26
  0x00,0x00,0x00,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x60,0x00,0x00,0x00,0x00,//; 27
  0x00,0x00,0x80,0x40,0x20,0x10,0x08,0x00,0x00,0x01,0x02,0x04,0x08,0x10,0x20,0x00,//< 28
  0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x00,0x04,0x04,0x04,0x04,0x04,0x04,0x04,0x00,//= 29
  0x00,0x08,0x10,0x20,0x40,0x80,0x00,0x00,0x00,0x20,0x10,0x08,0x04,0x02,0x01,0x00,//> 30
  0x00,0x70,0x48,0x08,0x08,0x08,0xF0,0x00,0x00,0x00,0x00,0x30,0x36,0x01,0x00,0x00,//? 31
  0xC0,0x30,0xC8,0x28,0xE8,0x10,0xE0,0x00,0x07,0x18,0x27,0x24,0x23,0x14,0x0B,0x00,//@ 32
  0x00,0x00,0xC0,0x38,0xE0,0x00,0x00,0x00,0x20,0x3C,0x23,0x02,0x02,0x27,0x38,0x20,//A 33
  0x08,0xF8,0x88,0x88,0x88,0x70,0x00,0x00,0x20,0x3F,0x20,0x20,0x20,0x11,0x0E,0x00,//B 34
  0xC0,0x30,0x08,0x08,0x08,0x08,0x38,0x00,0x07,0x18,0x20,0x20,0x20,0x10,0x08,0x00,//C 35
  0x08,0xF8,0x08,0x08,0x08,0x10,0xE0,0x00,0x20,0x3F,0x20,0x20,0x20,0x10,0x0F,0x00,//D 36
  0x08,0xF8,0x88,0x88,0xE8,0x08,0x10,0x00,0x20,0x3F,0x20,0x20,0x23,0x20,0x18,0x00,//E 37
  0x08,0xF8,0x88,0x88,0xE8,0x08,0x10,0x00,0x20,0x3F,0x20,0x00,0x03,0x00,0x00,0x00,//F 38
  0xC0,0x30,0x08,0x08,0x08,0x38,0x00,0x00,0x07,0x18,0x20,0x20,0x22,0x1E,0x02,0x00,//G 39
  0x08,0xF8,0x08,0x00,0x00,0x08,0xF8,0x08,0x20,0x3F,0x21,0x01,0x01,0x21,0x3F,0x20,//H 40
  0x00,0x08,0x08,0xF8,0x08,0x08,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//I 41
  0x00,0x00,0x08,0x08,0xF8,0x08,0x08,0x00,0xC0,0x80,0x80,0x80,0x7F,0x00,0x00,0x00,//J 42
  0x08,0xF8,0x88,0xC0,0x28,0x18,0x08,0x00,0x20,0x3F,0x20,0x01,0x26,0x38,0x20,0x00,//K 43
  0x08,0xF8,0x08,0x00,0x00,0x00,0x00,0x00,0x20,0x3F,0x20,0x20,0x20,0x20,0x30,0x00,//L 44
  0x08,0xF8,0xF8,0x00,0xF8,0xF8,0x08,0x00,0x20,0x3F,0x00,0x3F,0x00,0x3F,0x20,0x00,//M 45
  0x08,0xF8,0x30,0xC0,0x00,0x08,0xF8,0x08,0x20,0x3F,0x20,0x00,0x07,0x18,0x3F,0x00,//N 46
  0xE0,0x10,0x08,0x08,0x08,0x10,0xE0,0x00,0x0F,0x10,0x20,0x20,0x20,0x10,0x0F,0x00,//O 47
  0x08,0xF8,0x08,0x08,0x08,0x08,0xF0,0x00,0x20,0x3F,0x21,0x01,0x01,0x01,0x00,0x00,//P 48
  0xE0,0x10,0x08,0x08,0x08,0x10,0xE0,0x00,0x0F,0x18,0x24,0x24,0x38,0x50,0x4F,0x00,//Q 49
  0x08,0xF8,0x88,0x88,0x88,0x88,0x70,0x00,0x20,0x3F,0x20,0x00,0x03,0x0C,0x30,0x20,//R 50
  0x00,0x70,0x88,0x08,0x08,0x08,0x38,0x00,0x00,0x38,0x20,0x21,0x21,0x22,0x1C,0x00,//S 51
  0x18,0x08,0x08,0xF8,0x08,0x08,0x18,0x00,0x00,0x00,0x20,0x3F,0x20,0x00,0x00,0x00,//T 52
  0x08,0xF8,0x08,0x00,0x00,0x08,0xF8,0x08,0x00,0x1F,0x20,0x20,0x20,0x20,0x1F,0x00,//U 53
  0x08,0x78,0x88,0x00,0x00,0xC8,0x38,0x08,0x00,0x00,0x07,0x38,0x0E,0x01,0x00,0x00,//V 54
  0xF8,0x08,0x00,0xF8,0x00,0x08,0xF8,0x00,0x03,0x3C,0x07,0x00,0x07,0x3C,0x03,0x00,//W 55
  0x08,0x18,0x68,0x80,0x80,0x68,0x18,0x08,0x20,0x30,0x2C,0x03,0x03,0x2C,0x30,0x20,//X 56
  0x08,0x38,0xC8,0x00,0xC8,0x38,0x08,0x00,0x00,0x00,0x20,0x3F,0x20,0x00,0x00,0x00,//Y 57
  0x10,0x08,0x08,0x08,0xC8,0x38,0x08,0x00,0x20,0x38,0x26,0x21,0x20,0x20,0x18,0x00,//Z 58
  0x00,0x00,0x00,0xFE,0x02,0x02,0x02,0x00,0x00,0x00,0x00,0x7F,0x40,0x40,0x40,0x00,//[ 59
  0x00,0x0C,0x30,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x06,0x38,0xC0,0x00,//\ 60
  0x00,0x02,0x02,0x02,0xFE,0x00,0x00,0x00,0x00,0x40,0x40,0x40,0x7F,0x00,0x00,0x00,//] 61
  0x00,0x00,0x04,0x02,0x02,0x02,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//^ 62
  0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,//_ 63
  0x00,0x02,0x02,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//` 64
  0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x19,0x24,0x22,0x22,0x22,0x3F,0x20,//a 65
  0x08,0xF8,0x00,0x80,0x80,0x00,0x00,0x00,0x00,0x3F,0x11,0x20,0x20,0x11,0x0E,0x00,//b 66
  0x00,0x00,0x00,0x80,0x80,0x80,0x00,0x00,0x00,0x0E,0x11,0x20,0x20,0x20,0x11,0x00,//c 67
  0x00,0x00,0x00,0x80,0x80,0x88,0xF8,0x00,0x00,0x0E,0x11,0x20,0x20,0x10,0x3F,0x20,//d 68
  0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x1F,0x22,0x22,0x22,0x22,0x13,0x00,//e 69
  0x00,0x80,0x80,0xF0,0x88,0x88,0x88,0x18,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//f 70
  0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x6B,0x94,0x94,0x94,0x93,0x60,0x00,//g 71
  0x08,0xF8,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x3F,0x21,0x00,0x00,0x20,0x3F,0x20,//h 72
  0x00,0x80,0x98,0x98,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//i 73
  0x00,0x00,0x00,0x80,0x98,0x98,0x00,0x00,0x00,0xC0,0x80,0x80,0x80,0x7F,0x00,0x00,//j 74
  0x08,0xF8,0x00,0x00,0x80,0x80,0x80,0x00,0x20,0x3F,0x24,0x02,0x2D,0x30,0x20,0x00,//k 75
  0x00,0x08,0x08,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//l 76
  0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x20,0x3F,0x20,0x00,0x3F,0x20,0x00,0x3F,//m 77
  0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x3F,0x21,0x00,0x00,0x20,0x3F,0x20,//n 78
  0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x1F,0x20,0x20,0x20,0x20,0x1F,0x00,//o 79
  0x80,0x80,0x00,0x80,0x80,0x00,0x00,0x00,0x80,0xFF,0xA1,0x20,0x20,0x11,0x0E,0x00,//p 80
  0x00,0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x0E,0x11,0x20,0x20,0xA0,0xFF,0x80,//q 81
  0x80,0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x20,0x20,0x3F,0x21,0x20,0x00,0x01,0x00,//r 82
  0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x33,0x24,0x24,0x24,0x24,0x19,0x00,//s 83
  0x00,0x80,0x80,0xE0,0x80,0x80,0x00,0x00,0x00,0x00,0x00,0x1F,0x20,0x20,0x00,0x00,//t 84
  0x80,0x80,0x00,0x00,0x00,0x80,0x80,0x00,0x00,0x1F,0x20,0x20,0x20,0x10,0x3F,0x20,//u 85
  0x80,0x80,0x80,0x00,0x00,0x80,0x80,0x80,0x00,0x01,0x0E,0x30,0x08,0x06,0x01,0x00,//v 86
  0x80,0x80,0x00,0x80,0x00,0x80,0x80,0x80,0x0F,0x30,0x0C,0x03,0x0C,0x30,0x0F,0x00,//w 87
  0x00,0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x31,0x2E,0x0E,0x31,0x20,0x00,//x 88
  0x80,0x80,0x80,0x00,0x00,0x80,0x80,0x80,0x80,0x81,0x8E,0x70,0x18,0x06,0x01,0x00,//y 89
  0x00,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x21,0x30,0x2C,0x22,0x21,0x30,0x00,//z 90
  0x00,0x00,0x00,0x00,0x80,0x7C,0x02,0x02,0x00,0x00,0x00,0x00,0x00,0x3F,0x40,0x40,//{ 91
  0x00,0x00,0x00,0x00,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0x00,0x00,0x00,//| 92
  0x00,0x02,0x02,0x7C,0x80,0x00,0x00,0x00,0x00,0x40,0x40,0x3F,0x00,0x00,0x00,0x00,//} 93
  0x00,0x06,0x01,0x01,0x02,0x02,0x04,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//~ 94
};
unsigned char code Hzk[][32]={

{0x00,0x00,0xF0,0x10,0x10,0x10,0x10,0xFF,0x10,0x10,0x10,0x10,0xF0,0x00,0x00,0x00},
{0x00,0x00,0x0F,0x04,0x04,0x04,0x04,0xFF,0x04,0x04,0x04,0x04,0x0F,0x00,0x00,0x00},/*"中",0*/

{0x40,0x40,0x40,0x5F,0x55,0x55,0x55,0x75,0x55,0x55,0x55,0x5F,0x40,0x40,0x40,0x00},
{0x00,0x40,0x20,0x0F,0x09,0x49,0x89,0x79,0x09,0x09,0x09,0x0F,0x20,0x40,0x00,0x00},/*"景",1*/

{0x00,0xFE,0x02,0x42,0x4A,0xCA,0x4A,0x4A,0xCA,0x4A,0x4A,0x42,0x02,0xFE,0x00,0x00},
{0x00,0xFF,0x40,0x50,0x4C,0x43,0x40,0x40,0x4F,0x50,0x50,0x5C,0x40,0xFF,0x00,0x00},/*"园",2*/

{0x00,0x00,0xF8,0x88,0x88,0x88,0x88,0xFF,0x88,0x88,0x88,0x88,0xF8,0x00,0x00,0x00},
{0x00,0x00,0x1F,0x08,0x08,0x08,0x08,0x7F,0x88,0x88,0x88,0x88,0x9F,0x80,0xF0,0x00},/*"电",3*/

{0x80,0x82,0x82,0x82,0x82,0x82,0x82,0xE2,0xA2,0x92,0x8A,0x86,0x82,0x80,0x80,0x00},
{0x00,0x00,0x00,0x00,0x00,0x40,0x80,0x7F,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},/*"子",4*/

{0x24,0x24,0xA4,0xFE,0xA3,0x22,0x00,0x22,0xCC,0x00,0x00,0xFF,0x00,0x00,0x00,0x00},
{0x08,0x06,0x01,0xFF,0x00,0x01,0x04,0x04,0x04,0x04,0x04,0xFF,0x02,0x02,0x02,0x00},/*"科",5*/

{0x10,0x10,0x10,0xFF,0x10,0x90,0x08,0x88,0x88,0x88,0xFF,0x88,0x88,0x88,0x08,0x00},
{0x04,0x44,0x82,0x7F,0x01,0x80,0x80,0x40,0x43,0x2C,0x10,0x28,0x46,0x81,0x80,0x00},/*"技",6*/

};

#endif




/* ==================== SRC\bmp.h ==================== */
#ifndef __BMP_H
#define __BMP_H
unsigned char code BMP1[] =
{
	0x00,0x03,0x05,0x09,0x11,0xFF,0x11,0x89,0x05,0xC3,0x00,0xE0,0x00,0xF0,0x00,0xF8,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x44,0x28,0xFF,0x11,0xAA,0x44,0x00,0x00,0x00,
	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,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x83,0x01,0x38,0x44,0x82,0x92,
	0x92,0x74,0x01,0x83,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x7C,0x44,0xFF,0x01,0x7D,
	0x7D,0x7D,0x01,0x7D,0x7D,0x7D,0x7D,0x01,0x7D,0x7D,0x7D,0x7D,0x7D,0x01,0xFF,0x00,
	0x00,0x00,0x00,0x00,0x00,0x01,0x00,0x01,0x00,0x01,0x00,0x01,0x00,0x01,0x00,0x01,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x00,0x00,0x00,0x00,0x00,
	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,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x00,0x00,0x00,0x00,
	0x00,0x00,0x01,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x01,
	0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3F,0x3F,0x03,0x03,
	0xF3,0x13,0x11,0x11,0x11,0x11,0x11,0x11,0x01,0xF1,0x11,0x61,0x81,0x01,0x01,0x01,
	0x81,0x61,0x11,0xF1,0x01,0x01,0x01,0x01,0x41,0x41,0xF1,0x01,0x01,0x01,0x01,0x01,
	0xC1,0x21,0x11,0x11,0x11,0x11,0x21,0xC1,0x01,0x01,0x01,0x01,0x41,0x41,0xF1,0x01,
	0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x11,0x11,0x11,0x11,0x11,0xD3,0x33,
	0x03,0x03,0x3F,0x3F,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,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xE0,0xE0,0x00,0x00,
	0x7F,0x01,0x01,0x01,0x01,0x01,0x01,0x00,0x00,0x7F,0x00,0x00,0x01,0x06,0x18,0x06,
	0x01,0x00,0x00,0x7F,0x00,0x00,0x00,0x00,0x40,0x40,0x7F,0x40,0x40,0x00,0x00,0x00,
	0x1F,0x20,0x40,0x40,0x40,0x40,0x20,0x1F,0x00,0x00,0x00,0x00,0x40,0x40,0x7F,0x40,
	0x40,0x00,0x00,0x00,0x00,0x60,0x00,0x00,0x00,0x00,0x40,0x30,0x0C,0x03,0x00,0x00,
	0x00,0x00,0xE0,0xE0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	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,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x07,0x07,0x06,0x06,
	0x06,0x06,0x04,0x04,0x04,0x84,0x44,0x44,0x44,0x84,0x04,0x04,0x84,0x44,0x44,0x44,
	0x84,0x04,0x04,0x04,0x84,0xC4,0x04,0x04,0x04,0x04,0x84,0x44,0x44,0x44,0x84,0x04,
	0x04,0x04,0x04,0x04,0x84,0x44,0x44,0x44,0x84,0x04,0x04,0x04,0x04,0x04,0x84,0x44,
	0x44,0x44,0x84,0x04,0x04,0x84,0x44,0x44,0x44,0x84,0x04,0x04,0x04,0x04,0x06,0x06,
	0x06,0x06,0x07,0x07,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	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,
	0x00,0x00,0x00,0x00,0x00,0x10,0x18,0x14,0x12,0x11,0x00,0x00,0x0F,0x10,0x10,0x10,
	0x0F,0x00,0x00,0x00,0x10,0x1F,0x10,0x00,0x00,0x00,0x08,0x10,0x12,0x12,0x0D,0x00,
	0x00,0x18,0x00,0x00,0x0D,0x12,0x12,0x12,0x0D,0x00,0x00,0x18,0x00,0x00,0x10,0x18,
	0x14,0x12,0x11,0x00,0x00,0x10,0x18,0x14,0x12,0x11,0x00,0x00,0x00,0x00,0x00,0x00,
	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,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x80,0x80,0x80,
	0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	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,
	0x00,0x7F,0x03,0x0C,0x30,0x0C,0x03,0x7F,0x00,0x00,0x38,0x54,0x54,0x58,0x00,0x00,
	0x7C,0x04,0x04,0x78,0x00,0x00,0x3C,0x40,0x40,0x7C,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0xAA,0xAA,0xAA,
	0x28,0x08,0x00,0xFF,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,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x7F,0x03,0x0C,0x30,0x0C,0x03,0x7F,
	0x00,0x00,0x26,0x49,0x49,0x49,0x32,0x00,0x00,0x7F,0x02,0x04,0x08,0x10,0x7F,0x00,/********************************/
};

unsigned char code BMP2[] =
{
	0x00,0x03,0x05,0x09,0x11,0xFF,0x11,0x89,0x05,0xC3,0x00,0xE0,0x00,0xF0,0x00,0xF8,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x44,0x28,0xFF,0x11,0xAA,0x44,0x00,0x00,0x00,
	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,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x83,0x01,0x38,0x44,0x82,0x92,
	0x92,0x74,0x01,0x83,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x7C,0x44,0xFF,0x01,0x7D,
	0x7D,0x7D,0x7D,0x01,0x7D,0x7D,0x7D,0x7D,0x01,0x7D,0x7D,0x7D,0x7D,0x01,0xFF,0x00,
	0x00,0x00,0x00,0x00,0x00,0x01,0x00,0x01,0x00,0x01,0x00,0x01,0x00,0x01,0x00,0x01,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x00,0x00,0x00,0x00,0x00,
	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,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x00,0x00,0x00,0x00,
	0x00,0x00,0x01,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x01,
	0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xF8,
	0x08,0x08,0x08,0x08,0x08,0x08,0x08,0x00,0xF8,0x18,0x60,0x80,0x00,0x00,0x00,0x80,
	0x60,0x18,0xF8,0x00,0x00,0x00,0x20,0x20,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0xE0,
	0x10,0x08,0x08,0x08,0x08,0x10,0xE0,0x00,0x00,0x00,0x20,0x20,0xF8,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x08,0x08,0x08,0x08,0x08,0x88,0x68,
	0x18,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	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,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x7F,
	0x01,0x01,0x01,0x01,0x01,0x01,0x00,0x00,0x7F,0x00,0x00,0x01,0x06,0x18,0x06,0x01,
	0x00,0x00,0x7F,0x00,0x00,0x00,0x40,0x40,0x7F,0x40,0x40,0x00,0x00,0x00,0x00,0x1F,
	0x20,0x40,0x40,0x40,0x40,0x20,0x1F,0x00,0x00,0x00,0x40,0x40,0x7F,0x40,0x40,0x00,
	0x00,0x00,0x00,0x00,0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x60,0x18,0x06,0x01,0x00,
	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,
	0x00,0x00,0x00,0x00,0x00,0x40,0x20,0x20,0x20,0xC0,0x00,0x00,0xE0,0x20,0x20,0x20,
	0xE0,0x00,0x00,0x00,0x40,0xE0,0x00,0x00,0x00,0x00,0x60,0x20,0x20,0x20,0xE0,0x00,
	0x00,0x00,0x00,0x00,0xE0,0x20,0x20,0x20,0xE0,0x00,0x00,0x00,0x00,0x00,0x40,0x20,
	0x20,0x20,0xC0,0x00,0x00,0x40,0x20,0x20,0x20,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,
	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,
	0x00,0x00,0x00,0x00,0x00,0x0C,0x0A,0x0A,0x09,0x0C,0x00,0x00,0x0F,0x08,0x08,0x08,
	0x0F,0x00,0x00,0x00,0x08,0x0F,0x08,0x00,0x00,0x00,0x0C,0x08,0x09,0x09,0x0E,0x00,
	0x00,0x0C,0x00,0x00,0x0F,0x09,0x09,0x09,0x0F,0x00,0x00,0x0C,0x00,0x00,0x0C,0x0A,
	0x0A,0x09,0x0C,0x00,0x00,0x0C,0x0A,0x0A,0x09,0x0C,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,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x80,0x80,0x80,
	0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	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,
	0x00,0x7F,0x03,0x0C,0x30,0x0C,0x03,0x7F,0x00,0x00,0x38,0x54,0x54,0x58,0x00,0x00,
	0x7C,0x04,0x04,0x78,0x00,0x00,0x3C,0x40,0x40,0x7C,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0xAA,0xAA,0xAA,
	0x28,0x08,0x00,0xFF,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,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x7F,0x03,0x0C,0x30,0x0C,0x03,0x7F,
	0x00,0x00,0x26,0x49,0x49,0x49,0x32,0x00,0x00,0x7F,0x02,0x04,0x08,0x10,0x7F,0x00,/***************************************/
	
};

#endif

一、IIC通信

本章围绕一块 0.96 英寸、128×64 像素的 OLED 模块展开。课程沿用常见写法 “IIC”，规范名称是 I²C（Inter-Integrated Circuit，也常写 I2C）。它使用两根信号线完成同步串行通信：

  • SCL：时钟线，由主机产生时钟。
  • SDA：双向数据线，承载地址、控制字节、命令、显示数据和应答位。
  • GND：所有器件必须共地，它是 SCL、SDA 电压判断的共同参考。
  • VCC/VDD：模块电源。应以手中模块丝印和规格书为准，不能只根据屏幕尺寸判断电压。

1.1 实验演示及硬件接线

1.1.1 实验演示与硬件接线准备

课程使用 51 单片机开发板驱动 OLED，先把厂家提供的 HEX 程序烧入单片机，再连接屏幕观察显示效果。连接或拔插模块前应先断电，避免插错一针、瞬间短路或带电插拔造成器件损坏。

接线前依次确认四件事：

  1. 模块接口顺序。不同厂家的 4 针模块可能把 GND、VCC、SCL、SDA 排成不同次序。
  2. 模块允许的供电电压。
  3. 单片机引脚映射。本例为 SCL=P1.5、SDA=P1.4。
  4. 总线的上拉电压和上拉电阻。I²C 的高电平由上拉电阻产生，不能忽略上拉端接到了几伏。
1.1.2 OLED屏幕介绍与接线演示

本例接线关系如下：

51 单片机开发板                         0.96 英寸 OLED 模块
┌──────────────┐                    ┌──────────────┐
│ GND          ├────────────────────┤ GND          │
│ 模块允许的VCC ├────────────────────┤ VCC/VDD      │
│ P1.5         ├────── SCL ─────────┤ SCL/SCK/D0   │
│ P1.4         ├────── SDA ─────────┤ SDA/D1       │
└──────────────┘                    └──────────────┘
                      ↑       ↑
                   上拉电阻  上拉电阻
                      │       │
                      └──总线允许的高电平电源

有些屏幕把时钟脚写成 SCK，但在 I²C 模式下更准确的名称是 SCL。还有一些 7 针模块同时支持 SPI 和 I²C，需要用背面的焊接电阻选择接口模式；4 针模块通常已固定为 I²C 模式。

供电和逻辑电平必须分开理解：

  • 课程配套的 4 针模块资料标注模块电源可在 3～5.5 V 范围内工作，因此课堂开发板可以按其说明供电。
  • SSD1306 芯片自身的逻辑电源并不是“天然耐 5 V”。裸芯片与成品模块不是同一概念；模块是否带稳压、上拉和电平处理，要看模块电路。
  • 如果无法确认模块内部电路，较稳妥的做法是让 SCL、SDA 上拉到双方都能接受的 3.3 V，必要时增加双向电平转换器。不能因为 VCC 能接 5 V，就推断数据线也一定允许 5 V。
1.1.3 实验演示: 屏幕显示效果

演示程序依次显示汉字、英文、数字、ASCII 字符和位图。这说明“显示什么”与“怎样把数据送到屏幕”是两个层次：

flowchart LR
    A["应用层：字符串、汉字、图片"] --> B["显示函数：字模/坐标转换"]
    B --> C["SSD1306 命令与显存数据"]
    C --> D["I²C 驱动：START、字节、ACK、STOP"]
    D --> E["SCL/SDA 引脚"]
    E --> F["OLED 像素发光"]

屏幕能够显示中文，并不代表控制器能理解汉字编码。程序实际把每个汉字预先转换成点阵字模，再把点阵字节写入显示 RAM。

1.1.4 IIC通信与硬件连接详解

I²C 是主从式总线。这里的 51 单片机是主机，负责产生 SCL、发出起始和停止条件；SSD1306 是从机，接收地址、命令和显示数据。同一组 SCL、SDA 可以连接多个从机，但每个从机需要有可区分的地址，总线电容和上拉电阻也必须满足时序要求。

课程代码向屏幕发送的首字节是 0x78。它不是通常资料中所说的 7 位地址本身，而是“地址加写方向位”组成的 8 位地址字节：

SSD1306 7 位地址：0x3C = 0b0111100
左移一位：         0b01111000
写方向 R/W=0：     0b01111000 = 0x78

若资料或扫描工具显示地址 0x3C，而代码写 0x78，
两者并不矛盾，只是表示口径不同。

SSD1306 的 SA0 状态可让 7 位地址在 0x3C 与 0x3D 之间选择；具体模块如何固定 SA0，应查看电路或用 I²C 扫描确认。

一次写命令或写数据的帧可以概括为：

START
  │
  ├─ 地址字节 0x78 ─ ACK
  ├─ 控制字节       ─ ACK
  │      0x00：后面是命令
  │      0x40：后面是显存数据
  ├─ 命令/数据字节  ─ ACK
  │
STOP
1.1.5 时钟线与数据线原理

I²C 的 SCL、SDA 通常采用开漏结构：器件可以主动拉低线路，但不应主动把线路推成高电平；线路释放后，由外部上拉电阻把它恢复为高电平。这样多个器件共用总线时，不会出现一个器件强拉高、另一个器件强拉低的硬碰撞。

经典 51 的 P1 口是准双向口。软件写 0 时可把引脚拉低，写 1 时相当于释放引脚并允许其呈现高电平，因此常被用来模拟开漏行为。但总线仍应有合适的外部上拉，不能把端口内部的弱上拉当成通用、可靠的 I²C 上拉方案。

上拉电阻还会和总线电容形成 RC 充电过程：

[ \tau = R_P C_B ]

R_P 越大，耗电越小，但上升沿越慢；R_P 越小，上升更快，但低电平时灌电流更大。选择时需要同时满足器件灌电流能力和规定的上升时间。短线、少量器件的低速实验中常见 4.7 kΩ～10 kΩ，但这只是经验起点，不是所有电路都固定使用该数值。

1.1.6 OLED屏幕参数介绍

0.96 英寸描述的是屏幕对角线尺寸，不是分辨率。本模块为 128×64 单色点阵，共有：

[ 128 \times 64 = 8192\ \text{个像素} ]

单色像素只需 1 bit，因此完整显存容量为：

[ 8192\ \text{bit} = 1024\ \text{byte} ]

在常用页寻址理解中，64 行被分成 8 页，每页覆盖垂直方向 8 个像素，每页有 128 个列字节：

GDDRAM
Page 0：第 0～7 行    [列0字节][列1字节] ... [列127字节]
Page 1：第 8～15 行   [列0字节][列1字节] ... [列127字节]
...
Page 7：第56～63 行   [列0字节][列1字节] ... [列127字节]

一个列字节：
bit0 → 本页最上方像素
bit1 → 下一像素
...
bit7 → 本页最下方像素

因此写入一个字节通常会改变同一列中纵向排列的 8 个像素。理解这一点，才能看懂 OLED_Set_Pos()、OLED_Clear() 和字模数组为什么按页、按列发送。

1.1.7 不同屏幕对比与选择

OLED 像素自发光，不需要传统背光，具有对比度高、视角大、响应快、模块小巧等优点；同时也要考虑有机材料老化、长时间固定画面可能留下残影或烧屏等问题。

1602 字符 LCD 与 12864 图形 LCD 并没有因为 OLED 出现就“不能使用”：

类型适合的场景需要权衡的方面
1602 字符 LCD低成本字符界面、老项目兼容字符和图形能力有限、体积较大
12864 图形 LCD传统图形/汉字界面接口、背光、尺寸和刷新方式因型号而异
128×64 OLED小尺寸高对比图形界面成本、老化、静态画面和供电设计

“12864”通常表示 128×64 像素，但同分辨率不等于显示效果、接口、显存组织和驱动方式完全相同。

1.1.8 IIC通信时序介绍

标准模式 I²C 常工作在 100 kbit/s。若近似按一个时钟周期传一位计算：

[ T=\frac{1}{f}=\frac{1}{100000}=10\ \mu s ]

软件模拟 I²C 时，SCL 高、低电平持续时间、函数执行时间和中断打断都会影响真实频率，所以不能只看某一个 delay 参数就断定总线恰好是 100 kHz。

四条最重要的时序规则如下：

空闲：SCL=1，SDA=1

START：SCL 保持高电平时，SDA 从 1 变为 0
SCL  : ─────────────
SDA  : ───────\______

数据：SCL 高电平期间 SDA 必须稳定；通常在 SCL 低电平期间改变 SDA
SCL  : ___/‾‾‾\___/‾‾‾\___
SDA  : == bit7 ==== bit6 ===

ACK：第 9 个时钟由接收方把 SDA 拉低
SCL  : 数据8位后 ___/‾‾‾\___
SDA  :            ____0____    ACK
                  ‾‾‾‾1‾‾‾    NACK

STOP：SCL 保持高电平时，SDA 从 0 变为 1
SCL  : ─────────────
SDA  : _______/‾‾‾‾‾

每个字节按最高位 bit7 到最低位 bit0 的顺序发送，随后是第 9 个应答时钟。课程里的 IIC_Wait_Ack() 只产生第 9 个时钟，并没有读取 SDA 判断从机是否真的拉低，因此它实际上“忽略了应答结果”。演示可能仍能显示，但工程代码应在释放 SDA 后采样其电平，并设置超时或错误返回值。

1.2 中景源代码查看

代码可分成三层：

main.c
  └─ OLED_ShowString / OLED_ShowCHinese / OLED_DrawBMP
       ├─ 坐标换算与字模查表
       └─ OLED_WR_Byte
            ├─ IIC_Start
            ├─ Write_IIC_Byte
            ├─ IIC_Wait_Ack
            └─ IIC_Stop
                 ↓
              P1.5(SCL)、P1.4(SDA)

OLED_Init() 发送 SSD1306 初始化命令，配置扫描方向、对比度、复用率、电荷泵和开显示等功能；OLED_Clear() 按 8 页×128 列写入 0x00；OLED_Set_Pos() 设置页地址与列地址；字符、汉字和图片函数则负责把对应字模送入显存。

还要注意两处容易误解的地方：

  • 复位后并不是 CPU 直接执行 C 语言的 main()；启动代码会先建立运行环境，再调用 main()。
  • 头文件把 u32 定义成了 unsigned int。在常见 C51 编译器中，unsigned int 通常为 16 位，因此这个别名并不是真正的 32 位类型。若函数确实要处理 32 位数，应使用编译器支持的 unsigned long 或经过验证的定宽类型。

1.3 新代码查看方法

阅读陌生显示工程时，可以按“调用入口—显示函数—底层写字节—引脚”反向追踪：

  1. 从 main() 找到首次调用的 OLED_Init()。
  2. 查看函数声明所在的 oled.h，确认参数、引脚和命令/数据标志。
  3. 跳到 oled.c，继续跟踪 OLED_WR_Byte()。
  4. 找出 IIC_Start()、Write_IIC_Byte()、IIC_Stop()，对应到时序图。
  5. 查看 oledfont.h 和 bmp.h，理解显示内容只是字节数组。
  6. 最后回到 SSD1306 数据手册，核对地址、控制字节和初始化命令。

这种顺序能把“屏幕上出现文字”逐级还原成“SDA 在每个 SCL 周期发送了哪些位”。

1.3.1 96寸OLED屏幕使用手册

这里指的是 0.96 英寸 OLED。先确认模块版本、接口针数、驱动芯片、分辨率和默认接口模式，再按对应资料接线。外观相似的模块可能使用不同驱动芯片或不同地址，不能只凭尺寸套用程序。

1.3.1.1 OLED简介

OLED 是有机发光二极管显示技术，像素可以自行发光。课程使用的是单色点阵模块，SSD1306 负责接收命令和数据，并驱动面板的行列电极。

可以把内部结构理解为：

I²C接口
   ↓
命令解码器 ──→ 显示时序/扫描控制 ──→ 行驱动、列驱动 ──→ OLED面板
   ↓
GDDRAM（128×64 bit）
   ↑
显示数据写入

SSD1306 是专用显示控制/驱动芯片，不是可随意编程的通用单片机。它内部有接口、命令译码、显示 RAM、时序与驱动电路，但执行的是固定命令集。

1.3.1.2 产品特点

本模块的关键特点包括 128×64 单色点阵、I²C 两线通信、小尺寸和高对比度。实际项目还应核对：

  • 模块电源范围与逻辑电平范围；
  • 7 位从机地址；
  • 是否自带上拉电阻、稳压器或电荷泵外围；
  • 引脚顺序以及是否需要焊接电阻切换接口；
  • 显存寻址模式和扫描方向。
1.3.1.3 96OLED_SSD1306驱动芯片手册

查手册时优先关注以下章节：

目标需要查的内容
正确接线引脚定义、推荐应用电路、绝对最大额定值
正确寻址I²C 从机地址与 SA0
区分命令和数据控制字节中的 Co、D/C# 位
正确刷新GDDRAM、页/列地址和寻址模式
正确初始化命令表、上电和关断流程
判断速度是否合规I²C AC 特性、建立/保持时间

数据手册给的是芯片级条件，模块说明给的是成品板级条件。二者一起看，才能避免把“模块 VCC 可接 5 V”误读成“SSD1306 所有引脚都可直接承受 5 V”。

1.3.1.4 新代码查看方法

遇到另一份 OLED 工程时，先建立一张对应表：

检查项本例
MCU51 单片机
SCLP1.5
SDAP1.4
7 位地址常见为 0x3C
代码中的写地址字节0x78
命令控制字节0x00
数据控制字节0x40
分辨率128×64
显存量1024 byte

只要逐项核对引脚、延时、地址、控制字节、初始化序列和显存方向，就能判断代码需要直接使用、改宏定义，还是重写底层 I²C。

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