STM32——OLED显示字符串

一、工程整体功能

使用STM32F103 的硬件 IIC1（PB6=SCL，PB7=SDA）驱动 0.96 寸 OLED 屏：

1. 屏幕全屏点亮
2. 全屏熄灭
3. 显示字符串Hello world（两种字号）

二、文件分工

• main.c：主函数，负责初始化、调用 OLED 功能
• oled.c：OLED 核心驱动（IIC 初始化、写命令、写数据、显示字符）
• oled.h：函数声明
• codetab.h：字库（显示文字需要的点阵数据）

三、main.c 逐行解释

#include "stm32f10x.h" #include "main.h" #include "stdio.h" #include "oled.h" // 软件毫秒延时（粗略） void delay(uint16_t time) { uint16_t i = 0; while(time--) { i = 12000; while(i--); } } int main() { // 中断分组（必须配置） NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); // 初始化硬件IIC I2C_Configuration(); // 初始化OLED OLED_Init(); delay(2000); // 全屏点亮（全白） OLED_Fill(0XFF); delay(2000); // 全屏熄灭（全黑） OLED_Fill(0X00); delay(2000); // 在第3行显示小字 Hello world OLED_ShowStr(0,3,(unsigned char *)"Hello world",1); // 在第4行显示大字 Hello world OLED_ShowStr(0,4,(unsigned char *)"Hello world",2); while(1) { // 死循环保持显示 } }

主流程

初始化 IIC → 初始化 OLED → 亮屏 → 灭屏 → 显示文字 → 保持显示

四、oled.c 终极详细拆解

整个 oled.c 只做 4 件事：

1. 初始化 IIC（和 OLED 通信的总线）
2. 写命令（配置 OLED：开关、亮度、模式）
3. 写数据（往屏幕里画点）
4. 显示函数（清屏、显示字符串）

模块 1：I2C 初始化（I2C_Configuration）

void I2C_Configuration(void) { I2C_InitTypeDef I2C_InitStructure; GPIO_InitTypeDef GPIO_Initstructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1 , ENABLE);

解释：

1. 定义结构体：用来配置 GPIO 和 I2C
2. 开时钟：
   • GPIOB 时钟：PB6/PB7 要用作 I2C
   • I2C1 时钟：硬件 I2C 必须开时钟不开时钟 → 外设完全不工作

//PB6 --SCL;PB7 --SDA GPIO_Initstructure.GPIO_Mode = GPIO_Mode_AF_OD; GPIO_Initstructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7; GPIO_Initstructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOB, &GPIO_Initstructure);

解释：

• PB6 = SCL（时钟线）
• PB7 = SDA（数据线）
• 模式必须是 AF_OD（复用开漏）I2C 通信标准要求，推挽输出会烧坏

I2C_DeInit(I2C1); I2C_InitStructure.I2C_Ack = I2C_Ack_Enable; I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit; I2C_InitStructure.I2C_ClockSpeed = 400000; I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2; I2C_InitStructure.I2C_Mode = I2C_Mode_I2C; I2C_InitStructure.I2C_OwnAddress1 = 0x33; I2C_Init(I2C1, &I2C_InitStructure); I2C_Cmd(I2C1, ENABLE); }

解释：

• 复位 I2C
• 开启 ACK 应答
• 7 位地址
• 速度 400KHz（OLED 标准速度）
• 配置成 I2C 模式
• 最后启动 I2C

模块 2：I2C 写一个字节（核心通信函数）

void I2C_WriteByte(uint8_t addr,uint8_t data) { while( I2C_GetFlagStatus(I2C1, I2C_FLAG_BUSY) );

解释：

等待 I2C 总线空闲如果忙，就等着，不忙再开始通信。

I2C_GenerateSTART(I2C1, ENABLE); while( !I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT) );

解释：

• 产生起始信号
• 等待变成主机模式

I2C_Send7bitAddress(I2C1, OLED_ADDRESS, I2C_Direction_Transmitter); while( !I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED) );

解释：

• 发送 OLED 地址 0x78
• 等待 OLED 应答

I2C_SendData(I2C1, addr); while( !I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED) ); I2C_SendData(I2C1, data); while( !I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED) );

解释：

• 先发送控制字节（命令 / 数据）
• 再发送数据 / 命令内容
• 每发一个字节，必须等待发送完成

I2C_GenerateSTOP(I2C1, ENABLE); }

解释：

发送停止信号，结束一次通信

模块 3：写命令（控制 OLED 行为）

void WriteCmd(unsigned char I2C_Command) { I2C_WriteByte(0x00,I2C_Command); }

解释：

• 0x00 = 告诉 OLED：这是命令
• 比如：清屏、设置坐标、开关屏幕

模块 4：写数据（往屏幕里画点）

void WriteData(unsigned char I2C_Data) { I2C_WriteByte(0x40,I2C_Data); }

解释：

• 0x40 = 告诉 OLED：这是要显示的数据
• 就是画点、写字、画图案

模块 5：OLED 初始化（开机必须执行）

void OLED_Init(void) { delay_ms(100); WriteCmd(0xAE); // 关屏幕 WriteCmd(0x20); // 设置地址模式 WriteCmd(0x02); // 页地址模式

解释：

页地址模式 = 0x02

WriteCmd(0xb0); // 从第0页开始 WriteCmd(0xc8); // 扫描方向 WriteCmd(0x00); // 列地址低字节 WriteCmd(0x10); // 列地址高字节 WriteCmd(0x40); // 开始行地址

解释：

这些都是固定配置，OLED 必须按这个流程初始化才能工作。

WriteCmd(0x81); // 对比度 WriteCmd(0xff); // 亮度最大 WriteCmd(0xa1); // 左右反转 WriteCmd(0xa6); // 正常显示 WriteCmd(0xa8); // 复用率 WriteCmd(0x3F);

WriteCmd(0xd3); // 显示偏移 WriteCmd(0x00); WriteCmd(0xd5); // 时钟分频 WriteCmd(0xf0); WriteCmd(0xd9); // 预充电 WriteCmd(0x22); WriteCmd(0xda); // 硬件配置 WriteCmd(0x12); WriteCmd(0xdb); // VCOM 电压 WriteCmd(0x20);

WriteCmd(0x8d); // 电荷泵 WriteCmd(0x14); // 开启 WriteCmd(0xaf); // 开屏幕 }

总结：

初始化 = 让 OLED 从断电状态变成可工作状态少一句都不亮！

模块 6：设置光标坐标（写字的位置）

void OLED_Setpos(unsigned char x,unsigned char y) { WriteCmd(0xb0 + y); // 设置页（行） WriteCmd((x&0xf0)>>4|0x10); // 列高4位 WriteCmd(x & 0x0F); // 列低4位 }

解释：

• x：列（0~127）
• y：页（0~7）这就是控制字符显示在哪里之前乱码就是这里写错！

模块 7：全屏填充（点亮 / 熄灭整个屏幕）

void OLED_Fill(unsigned char Fill_Data) { unsigned char m,n; for(m=0;m<8;m++) { WriteCmd(0xb0+m); WriteCmd(0x00); WriteCmd(0x10); for(n=0;n<128;n++) { WriteData(Fill_Data); } } }

解释：

• 8 行 × 128 列
• 逐行逐列写数据
• 0x00 = 全黑
• 0xFF = 全亮

模块 8：显示字符串（最核心！）

void OLED_ShowStr(...) {

两种字号：

1. 6x8 小字
2. 8x16 大字

case1: 小字 for(i=0;i<6;i++) WriteData(F6x8[c][i]);

取字库数据，逐列写进去

case2: 大字 第一行 WriteData(F8X16...) 第二行 WriteData(F8X16+8)

解释：

16×8 字体占两页所以必须写：

OLED_Setpos(x,y); // 上半部分 OLED_Setpos(x,y+1); // 下半部分

最终总结（你必须记住的 4 句话）

1. I2C 是通信通道
2. WriteCmd 是发命令
3. WriteData 是画点写字
4. 字库 F6x8 / F8X16 存储字符形状

五、oled.h 解释

#ifndef _OLED_H_ #define _OLED_H_ #include "stm32f10x.h" #define OLED_ADDRESS 0X78 // OLED的IIC地址 void I2C_Configuration(void); void I2C_WriteByte(uint8_t addr,uint8_t data); void WriteCmd(unsigned char I2C_Command); void WriteData(unsigned char I2C_Data); void OLED_Init(void); // ...其他函数声明 #endif

作用：声明函数，让main.c能调用。

六、codetab.h 解释

• F6x8小字库
• F8X16大字库每个文字对应一串数字，代表像素点亮灭。

const unsigned char 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 }; const unsigned char 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 };

七、整体运行流程

1. 初始化 IIC
2. 初始化 OLED
3. 全屏亮 → 全屏灭
4. 在指定位置显示文字
5. 保持显示