OLED驱动 1.3寸 硬件IIC驱动（STM32F4 CubeMX）

一、前期准备
单片机：STM32F407VET6
开发环境：MDK5.14
库函数：STM32Cube_FW_F4_V1.16.0
1.3 OLED模块：淘宝有售

二、实验效果



三、驱动原理
IIC配置：
剩余的请参照具体的数据手册，大部分指令都是兼容的，不同驱动器可能会有细微的差别，请对照手册修改。
需要完整工程或者有问题的请加QQ：1002521871，验证：呵呵.
四、驱动代码
oled.h

#ifndef __OLED_H__
#define	__OLED_H__
#include "stm32f4xx_hal.h"
#include "i2c.h"
#include "bmp.h"
#include "oledfont.h"

#define 	OLED			0
#define		SIZE			16
#define		XLevelL			0x00
#define		XLevelH			0x10
#define		Max_Column		128
#define		Max_Row			64
#define		Brightness		0xff
#define		X_WIDTH			128
#define		Y_WIDTH			64

typedef enum
{
	OLED_CMD,
	OLED_DATA
}OLED_WR_MODE;

typedef enum 
{
	Display_ON,
	Display_OFF,
	Display_Clear,
	Display_Test
}DIS_MODE;

extern I2C_HandleTypeDef hi2c1;
//OLED控制用函数
extern void OLED_WR_Byte(uint8_t dat, OLED_WR_MODE cmd);	    
extern void OLED_Display_Status(DIS_MODE mode);   							   		    
extern void OLEDConfiguration(void);
extern void OLED_DrawPoint(uint8_t x, uint8_t y, uint8_t t);
extern void OLED_Fill(uint8_t x1, uint8_t y1, uint8_t x2, uint8_t y2, uint8_t dot);
extern void OLED_ShowChar(uint8_t x, uint8_t y, uint8_t chr);
extern void OLED_ShowNum(uint8_t x, uint8_t y, uint32_t num, uint8_t len, uint8_t size);
extern void OLED_ShowString(uint8_t x,uint8_t y, uint8_t *p);	 
extern void OLED_Set_Pos(uint8_t x, uint8_t y);
extern void OLED_ShowCHinese(uint8_t x, uint8_t y, uint8_t no);
extern void OLED_DrawBMP(uint8_t x0, uint8_t y0,uint8_t x1, uint8_t y1, uint8_t BMP[]);
#endif

oled.c

#include "oled.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 			   


//向SSD1106写入一个字节。
//dat:要写入的数据/命令
//cmd:数据/命令标志 0,表示命令;1,表示数据;
void OLED_WR_Byte(uint8_t dat, OLED_WR_MODE cmd)
{	
	uint8_t write[2] = {0};
	write[1] = dat; 
	switch(cmd)
	{
		case OLED_CMD:
			write[0] = 0x00;	
			break;
		case OLED_DATA:
			write[0] = 0x40;
			break;
	}   
	
	HAL_I2C_Master_Transmit(&hi2c1, 0x78, write, 2, HAL_MAX_DELAY);
} 
//#endif

void OLED_Set_Pos(uint8_t x, uint8_t y) 
{ 
	OLED_WR_Byte(0xB0 + y, OLED_CMD);
	OLED_WR_Byte(((x & 0xF0) >> 4) | 0x10, OLED_CMD);
	OLED_WR_Byte((x & 0x0F) | 0x01, OLED_CMD); 
}   

void OLED_Display_Status(DIS_MODE mode)
{
	uint8_t i,n;		
	switch(mode)
	{
		case Display_ON://开启OLED显示 
			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
			break;
		case Display_OFF://关闭OLED显示  
			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
			break;
		case Display_Clear://清屏函数,清完屏,整个屏幕是黑色的!和没点亮一样!!!	
			for(i = 0; i < 8; i ++)  
			{  
				OLED_WR_Byte(0xB0 + i, OLED_CMD);    //设置页地址（0~7）
				OLED_WR_Byte(0x02, 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 < Max_Column; n ++)
				{
					OLED_WR_Byte(0, OLED_DATA); 
				}
			} //更新显示
			break;
		case Display_Test:
			for(i = 0; i < 8; i ++)  
			{  
				OLED_WR_Byte(0xb0 + i, OLED_CMD);    //设置页地址（0~7）
				OLED_WR_Byte(0x02, 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 < Max_Column; n ++)
				{
					OLED_WR_Byte(0XFF, OLED_DATA);
					HAL_Delay(5);
				}
			} //更新显示
			break;
	}
	
}
   
//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(uint8_t x, uint8_t y, uint8_t chr)
{      	
	uint8_t c = 0, i = 0;	
	c = chr - ' ';//得到偏移后的值			
	if(x > Max_Column - 1)
	{
		x = 0;
		y += 2;
	}
	if(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 + 1);
		for(i = 0; i < 6; i ++)
		{
			OLED_WR_Byte(F6x8[c][i],OLED_DATA);
		}
	}
}

void OLED_ShowChar1(uint8_t x, uint8_t y, uint8_t chr)
{      	
	uint8_t c = 0, i = 0;	
		c = chr - ' ';//得到偏移后的值			
		if(x > Max_Column - 1)
		{
			x = 0;
			y += 2;
		}
		if(SIZE == 16)
		{
			OLED_Set_Pos(x, y);	
			for(i = 0; i < 6; i ++)
			{
				OLED_WR_Byte(F6x8[c][i], OLED_DATA);
			}
			OLED_Set_Pos(x, y + 1);
			for(i = 0; i < 6; i ++)
			{
				OLED_WR_Byte(F6x8[c][i + 6], OLED_DATA);
			}
		}
		else 
		{	
			OLED_Set_Pos(x, y + 1);
			for(i = 0; i < 6; i ++)
			{
				OLED_WR_Byte(F6x8[c][i],OLED_DATA);
			}
		}
}
//m^n函数
uint32_t oled_pow(uint8_t m,uint8_t n)
{
	uint32_t 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(uint8_t x, uint8_t y, uint32_t num, uint8_t len, uint8_t size)
{         	
	uint8_t t,temp;
	uint8_t 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 + (size / 2) * t, y, ' ');
				continue;
			}else enshow = 1; 
		}
	 	OLED_ShowChar(x + (size / 2) * t, y, temp + '0'); 
	}
} 

//显示一个字符号串
void OLED_ShowString(uint8_t x, uint8_t y, uint8_t *chr)
{
	uint8_t j = 0;
	while (chr[j] != '\0')
	{		
		OLED_ShowChar(x, y, chr[j]);
		x += 8;
		if(x > 120)
		{
			x = 0; 
			y += 2;
		}
		j++;
	}
}


//显示汉字
void OLED_ShowCHinese(uint8_t x, uint8_t y, uint8_t no)
{      			    
	uint8_t 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(uint8_t x0, uint8_t y0,uint8_t x1, uint8_t y1, uint8_t BMP[])
{ 	
	uint8_t j = 0;
	uint8_t 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 OLEDConfiguration(void)
{ 	 	 
	OLED_WR_Byte(0xAE, OLED_CMD);//--turn off oled panel
	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  Set Mapping RAM Display Start Line (0x00~0x3F)
	OLED_WR_Byte(0x81, OLED_CMD);//--set contrast control register
	OLED_WR_Byte(0xCF, OLED_CMD); // Set SEG Output Current Brightness
	OLED_WR_Byte(0xA1, OLED_CMD);//--Set SEG/Column Mapping     0xa0左右反置 0xa1正常
	OLED_WR_Byte(0xC8, OLED_CMD);//Set COM/Row Scan Direction   0xc0上下反置 0xc8正常
	OLED_WR_Byte(0xA6, OLED_CMD);//--set normal display
	OLED_WR_Byte(0xA8, OLED_CMD);//--set multiplex ratio(1 to 64)
	OLED_WR_Byte(0x3f, OLED_CMD);//--1/64 duty
	OLED_WR_Byte(0xD3, OLED_CMD);//-set display offset	Shift Mapping RAM Counter (0x00~0x3F)
	OLED_WR_Byte(0x00, OLED_CMD);//-not offset
	OLED_WR_Byte(0xd5, OLED_CMD);//--set display clock divide ratio/oscillator frequency
	OLED_WR_Byte(0x80, OLED_CMD);//--set divide ratio, Set Clock as 100 Frames/Sec
	OLED_WR_Byte(0xD9, OLED_CMD);//--set pre-charge period
	OLED_WR_Byte(0xF1, OLED_CMD);//Set Pre-Charge as 15 Clocks & Discharge as 1 Clock
	OLED_WR_Byte(0xDA, OLED_CMD);//--set com pins hardware configuration
	OLED_WR_Byte(0x12, OLED_CMD);
	OLED_WR_Byte(0xDB, OLED_CMD);//--set vcomh
	OLED_WR_Byte(0x40, OLED_CMD);//Set VCOM Deselect Level
	OLED_WR_Byte(0x20, OLED_CMD);//-Set Page Addressing Mode (0x00/0x01/0x02)
	OLED_WR_Byte(0x02, OLED_CMD);//
	OLED_WR_Byte(0x8D, OLED_CMD);//--set Charge Pump enable/disable
	OLED_WR_Byte(0x14, OLED_CMD);//--set(0x10) disable
	OLED_WR_Byte(0xA4, OLED_CMD);// Disable Entire Display On (0xa4/0xa5)
	OLED_WR_Byte(0xA6, OLED_CMD);// Disable Inverse Display On (0xa6/a7) 
	OLED_WR_Byte(0xAF, OLED_CMD);//--turn on oled panel
	
	OLED_WR_Byte(0xAF, OLED_CMD); /*display ON*/ 
		
//	
//	OLED_WR_Byte(0xAE, OLED_CMD);//--display off
//	OLED_WR_Byte(0x02, 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);//--1/64 duty
//	OLED_WR_Byte(0xAD, OLED_CMD);//set charge pump enable
//	OLED_WR_Byte(0x8B, OLED_CMD);//-0x8B 内供 VCC
//	OLED_WR_Byte(0x33, OLED_CMD);//-0X30---0X33 set VPP 9V
//	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(0x1F, 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(0x40, OLED_CMD);//
//	
//	
//	OLED_WR_Byte(0xAF,OLED_CMD);//--turn on oled panel
	
//	OLED_Display_Status(Display_Test);
//	HAL_Delay(1000);
	OLED_Display_Status(Display_Clear);
	OLED_Set_Pos(0, 0); 
}  

由于作者能力有限，有不妥之处欢迎指正，邮箱[email protected]