SSD1306 OLED 1.3" IIC 驱动 带字库 中英文混合显示

早就听说OLED显示效果比较好,也不需要背光,使用起来接线也很方便,于是TB上买了一个1.3Inch的OLED,蓝色的字,显示效果确实非常好,下边就分享一下驱动过程

我在STM32F103C8T6这块单片机上调试的,硬件上我的屏幕是IIC接口的,没有用硬件I2C 而是模拟的,PB4->SCL PB6->SDA ,屏幕地址0x78,字库用的M25Q16 2MB字节

字库包含ASCII码,中文ASCII码,所有标点符号和GB2312汉字,字库容量263762Byte,就制作了16X16的字库,其它的没加,Flash空间足够,如果需要可以自行添加

字库的可以随时更新,通过串口1 Ymodem协议进行更新,下边会说明字库如何制件的

驱动上在RAM里开1024Byte有缓存,所有操作都是对这块内存区域进行操作,然后一次更新到屏幕上去

本驱动可以画点,画线,画圆,画矩形,画三角形,填充圆形,填充矩形等,

效果图:

SSD1306 OLED 1.3

SSD1306 OLED 1.3

SSD1306 OLED 1.3

SSD1306 OLED 1.3

void I2C_WriteByte(uint8_t addr,uint8_t data)
{
	IIC1_Start(); 
	IIC1_Send_Byte(0x78);
	IIC1_Wait_Ack();
	IIC1_Send_Byte(addr);	
	IIC1_Wait_Ack();	
	IIC1_Send_Byte(data);
      IIC1_Wait_Ack();	
      IIC1_Stop();
	//delay_ms(10);
}
void I2C_WriteMutliByte(uint8_t addr,uint8_t* data,uint16_t count)
{
	u8 i=0;
	IIC1_Start(); 
	IIC1_Send_Byte(0x78);
	IIC1_Wait_Ack();
	IIC1_Send_Byte(addr);	
	IIC1_Wait_Ack();	
	for (i = 0; i < count; i++) {
		IIC1_Send_Byte(data[i]);
		 IIC1_Wait_Ack();
	}
 	
  IIC1_Stop();
}

  

//更新屏幕
void SSD1306_UpdateScreen(void) {
	uint8_t m;
	for (m = 0; m < 8; m++) {
		WriteCmd(0xB0 + m);
		WriteCmd(0x02);//这里的起始地址是0x02,如果用SSD1306地址是0x00
		WriteCmd(0x10);
		
		/* Write multi data */
		I2C_WriteMutliByte(0x40,&SSD1306_Buffer[SSD1306_WIDTH * m], SSD1306_WIDTH);
		
	}
}

 下边是从Flash里读取字库并写入缓冲区

void SSD1306_ShowChineseString(uint8_t x, uint8_t y,uint8_t *str)
{
  uint8_t index_char,index_word;
	
	 unsigned char High8bit,Low8bit;
    
  index_char = 0;
	index_word = 0;
	while(*str!=0)
	{	
		High8bit=*str; 
		if(High8bit&0x80)    
    {str++;Low8bit=*str;}
		
			if(High8bit&0x80 ) 
			{
				
					SPI_Flash_Read(&SSD1306_Buffer[(x+index_word)*16 + (x+index_char)*8 + 2*y*128],((High8bit-0xa1)*94+Low8bit-0xa1)*32,16);
					SPI_Flash_Read(&SSD1306_Buffer[(x+index_word)*16  + (x+index_char)*8 + (2*y+1)*128],((High8bit-0xa1)*94+Low8bit-0xa1)*32 + 16,16);
				
				//SPI_Flash_Read(SSD1306_Buffer,((High8bit-0xa1)*94+Low8bit-0xa1)*32,32);
				index_word++;
			}
			else 
		 {
				SPI_Flash_Read(&SSD1306_Buffer[(x+index_char)*8  + (x+index_word)*16 + 2*y*128],(High8bit)*16 + 0x3fe50,8);	//0x0fe50 ÕâλÖúóÃæÌí¼ÓÁËASCIIÂë
				SPI_Flash_Read(&SSD1306_Buffer[(x+index_char)*8  + (x+index_word)*16 + (2*y+1)*128],(High8bit)*16 + 8 + 0x3fe50,8);
				index_char++;			
		 }
		 str++;
		 
	}
  
}

  驱动使用方法

  

          SSD1306_ShowString(2,2,"Hello Word",1);				
		SSD1306_ShowString(3,3,"Hello Word",1);				
		SSD1306_ShowString(0,4,"Hello Word!",2);
		//SSD1306_ToggleInvert();
		SSD1306_DrawCircle(32,32,32,0x01);
		SSD1306_DrawRectangle(0,0,128,64,0x01);
		SSD1306_DrawTriangle(80,32,120,56,120,0,0x01);
		SSD1306_UpdateScreen() ;
		delay_ms(5000);
		SSD1306_CLS();//
           SSD1306_ShowChineseString(0,0,"Hello弄啥类HaHa");
		SSD1306_ShowChineseString(0,1,"弄啥类"); 
          SSD1306_ShowChineseString(0,2,"Hello Word!"); SSD1306_UpdateScreen() ;

  

转载于:https://www.cnblogs.com/xfdr0805/articles/7469601.html

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