STM32F103的I2C驱动OLED动态显示-电子产品世界论坛

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STM32F103的I2C驱动OLED动态显示

meiyao

高工

2025-08-25 19:07:37 打赏

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是基于STM32F103（I2C1接口）驱动SSD1306 OLED模块的详细操作步骤，涵盖硬件连接、软件实现及动态显示优化方法：

一、硬件连接

1. 引脚分配STM32F103 (I2C1)

PB6 (SCL) → OLED SCL

PB7 (SDA) → OLED SDA

3.3V → OLED VCC

GND → OLED GND

上拉电阻

在SCL和SDA线上各接一个4.7kΩ上拉电阻（若OLED模块未集成）。

注意：STM32F103的I2C1默认引脚为PB6/PB7（部分开发板可能复用其他功能，需确认原理图）。

2. 电源与兼容性

OLED模块需支持3.3V逻辑电平（避免直接接5V损坏STM32引脚）。

若模块支持5V供电，需确保仅VCC接5V，SDA/SCL仍接3.3V（通过电平转换或分压电路）。

二、原理图

STM32F103OLED 屏连接引脚：

OLED 屏连接引脚：

三、CUBEMX 配置

PB3：Signal 为 n/a，GPIO 为 Output High，Maxi 为 No pull High，User L 为 OLED_SCL，Modified 为已勾选。
PB5：Signal 为 n/a，GPIO 为 Output High，Maxi 为 No pull High，User L 为 OLED_SDA，Modified 为已勾选。

Configuration 配置区域
GPIO output level：设置为 High。
GPIO mode：设置为 Output Push Pull。
GPIO Pull-up/Pull-down：设置为 No pull-up and no pull-down。
Maximum output speed：设置为 High。
User Label：设置为 OLED_SCL、OLED_SDA。

四、代码

//显示Hello World，Temperature和25.5C。
OLED_ShowString(0, 0, "Hello World!", 16, 0); 
OLED_ShowString(0, 2, "Temperature:", 16, 0);
OLED_ShowString(80, 4, "25.5C", 16, 1);

//动态图代码
unsigned char BMP2[][294] = {
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0X00,0X00,0X00,0X00,0XC0,0XE0,0XF0,0X08,0X00,0X80,0X80,0X00,0X00,0X00,0X00,0X00,
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0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,
0X00,0X00,0XFC,0XFF,0XFF,0X07,0X0F,0X3F,0X7F,0X3F,0X1F,0X3F,0XFC,0XF0,0XC0,0X00,
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,
0X60,0XF0,0X10,0XC3,0X2F,0X0C,0XD8,0XD8,0X10,0XD0,0XD8,0XEC,0X2F,0X17,0XF1,0X90,
0X60,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,
0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,
0X1C,0X00,0X16,0X1F,0X01,0X08,0X0A,0X04,0X04,0X07,0X00,0X0F,0X01,0X19,0X12,0X12,
0X1C,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,
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},
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0X00,0X00,0X00,0X00,0XC0,0XF0,0XF8,0X0C,0X00,0X80,0X80,0X00,0X00,0X00,0X00,0X00,
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0X00,0X00,0XF8,0XFF,0XFF,0X07,0X0F,0X3F,0X7F,0X3F,0X1F,0X3E,0XF8,0XF0,0XC0,0X00,
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0X60,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,
0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,
0X1C,0X00,0X16,0X1F,0X01,0X08,0X0A,0X04,0X04,0X07,0X00,0X0F,0X01,0X19,0X12,0X12,
0X1C,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,
0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,
0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,
0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,
}
};

//显示动态图函数
void OLED_DrawBMP1(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_SetPos(x0,y);
    for(x=x0;x<x1;x++)
		{
			Write_IIC_Data(BMP[j++]);
		}
	}
}

五、显示效果图

Hope2022

专家

2025-08-25 19:59:52 打赏

2楼

感谢分享，值得学习

lemonboard

高工

2025-08-26 19:43:05 打赏

3楼

这个动画小人好有意思啊

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STM32F103的I2C驱动OLED动态显示

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