STM32之IIC（软件）

介绍

IIC （又称为 I2C 或 I²C ）是一种串行通信协议， IIC使用两根线路来进行通信：串行数据线（SDA）和串行时钟线（SCL）。 SDA 线上的数据在 SCL 线的时钟信号下进行同步传输。
主从结构： IIC 通信中，设备分为主设备（通常是微控制器）和从设备（例如传感器或存储器）。主设备负责发起通信和控制通信的时序，而从设备响应主设备的指令。
地址寻址：每个 IIC设备都有一个唯一的 7 位或 10 位地址，主设备通过发送目标设备的地址来选择通信对象。
开漏输出： I2C总线上的信号是开漏输出的，这意味着每个I2C设备的输出引脚都是一个开漏输出，可以通过外部上拉电阻拉高。这种设计允许多个设备共享同一根总线，而不会出现信号冲突。（当I2C 设备空闲时，会输出高阻态，而当所有设备都空闲，都输出高阻态时，由上拉电阻把总线拉成高电平。）
总线仲裁：多个主机同时使用总线时，为了防止数据冲突，会利用仲裁方式决定由哪个设备占用总线。

IIC 通信的基本过程：

启动条件（Start）：主设备发出一个启动信号，即SDA线从高电平转为低电平，而SCL线保持高电平状态。

发送地址和读写位：主设备发送目标设备的地址（是7 位或10 位），并指定是读取数据还是写入数据（1位）。

地址确认（ACK）：从设备接收到地址后会发送应答信号（ACK），表示准备好与主设备通信。

数据传输：主设备或从设备在SCL时钟信号的边缘上发送或接收数据位。

停止条件（Stop）：主设备发送一个停止信号，即SDA线从低电平转为高电平，而SCL线保持高电平状态。

I2C 总线在传送数据过程中共有三种类型信号，它们分别是：起始信号、停止信号和应答信号。

数据有效性
I2C 使用 SDA 信号线来传输数据，使用 SCL 信号线进行数据同步。 SDA 数据线在 SCL 的每个时钟周期传输一位数据。传输时 SCL 为高电平的时候 SDA 表示的数据有效，即此时的 SDA 为高电平时表示数据 "1" ，为低电平时表示数据"0" 。当 SCL 为低电平时， SDA 的数据无效，一般在这个时候 SDA 进行电平切换，为下一次表示数据做好准备。每次数据传输都以字节为单位，每次传输的字节数不受限制。

应答信号
传输时主机产生时钟，在第9个时钟时（前面7位地址，1位读写），数据发送端会释放SDA 的控制权，由数据接收端控制SDA，若SDA 为高电平表示非应答信号(NACK)，低电平表示应答信号(ACK)。

编程

实现0.96寸四针OLED 屏幕的驱动（配套协议已资源绑定）。

oled.c

cs 复制代码

/********************OLED屏幕操作函数***************************/
#include "oled_font.h"
#include "oled.h"


void OLED_WriteCommand(uint8_t Command)
{
	IIC_Start();
	IIC_SendByte(0x78); 	//从机地址，并且写数据
	IIC_WaitACK();
	IIC_SendByte(0x00);     //
	IIC_WaitACK();
	IIC_SendByte(Command); // 写入命令
	IIC_WaitACK();
	IIC_Stop();
}

void OLED_WriteData(uint8_t Data)
{
	IIC_Start();
	IIC_SendByte(0x78); 	//从机地址
	IIC_WaitACK();
	IIC_SendByte(0x40);
	IIC_WaitACK();
	IIC_SendByte(Data); 	// 写入命令
	IIC_WaitACK();
	IIC_Stop();
}

/**
 * @brief  OLED设置光标位置
 * @param  Y 以左上角为原点，向下方向的坐标，范围：0~7
 * @param  X 以左上角为原点，向右方向的坐标，范围：0~127
 * @retval 无
 */
void OLED_SetCursor(uint8_t Y, uint8_t X)
{
    OLED_WriteCommand(0xB0 | Y);                 // 设置Y位置
    OLED_WriteCommand(0x10 | ((X & 0xF0) >> 4)); // 设置X位置高4位
    OLED_WriteCommand(0x00 | (X & 0x0F));        // 设置X位置低4位
}

/**
 * @brief  OLED清屏
 * @param  无
 * @retval 无
 */
void OLED_Clear(void)
{
    uint8_t i, j;
    for (j = 0; j < 8; j++)
    {
        OLED_SetCursor(j, 0);
        for (i = 0; i < 128; i++)
        {
            OLED_WriteData(0x00);
        }
    }
}

/**
 * @brief  OLED显示一个字符
 * @param  Line 行位置，范围：1~4
 * @param  Column 列位置，范围：1~16
 * @param  Char 要显示的一个字符，范围：ASCII可见字符
 * @retval 无
 */
void OLED_ShowChar(uint8_t Line, uint8_t Column, char Char)
{
    uint8_t i;
    OLED_SetCursor((Line - 1) * 2, (Column - 1) * 8); 		// 设置光标位置在上半部分
    for (i = 0; i < 8; i++)
    {
        OLED_WriteData(OLED_F8x16[Char - ' '][i]); 			// 显示上半部分内容
    }
    OLED_SetCursor((Line - 1) * 2 + 1, (Column - 1) * 8); 	// 设置光标位置在下半部分
    for (i = 0; i < 8; i++)
    {
        OLED_WriteData(OLED_F8x16[Char - ' '][i + 8]); 		// 显示下半部分内容
    }
}

/**
 * @brief  OLED显示字符串
 * @param  Line 起始行位置，范围：1~4
 * @param  Column 起始列位置，范围：1~16
 * @param  String 要显示的字符串，范围：ASCII可见字符
 * @retval 无
 */
void OLED_ShowString(uint8_t Line, uint8_t Column, char *String)
{
    uint8_t i;
    for (i = 0; String[i] != '\0'; i++)
    {
        OLED_ShowChar(Line, Column + i, String[i]);
    }
}

/**
 * @brief  OLED次方函数
 * @retval 返回值等于X的Y次方
 */
uint32_t OLED_Pow(uint32_t X, uint32_t Y)
{
    uint32_t Result = 1;
    while (Y--)
    {
        Result *= X;
    }
    return Result;
}

/**
 * @brief  OLED显示数字（十进制，正数）
 * @param  Line 起始行位置，范围：1~4
 * @param  Column 起始列位置，范围：1~16
 * @param  Number 要显示的数字，范围：0~4294967295
 * @param  Length 要显示数字的长度，范围：1~10
 * @retval 无
 */
void OLED_ShowNum(uint8_t Line, uint8_t Column, uint32_t Number, uint8_t Length)
{
    uint8_t i;
    for (i = 0; i < Length; i++)
    {
        OLED_ShowChar(Line, Column + i, Number / OLED_Pow(10, Length - i - 1) % 10 + '0');
    }
}

/**
 * @brief  OLED显示数字（十进制，带符号数）
 * @param  Line 起始行位置，范围：1~4
 * @param  Column 起始列位置，范围：1~16
 * @param  Number 要显示的数字，范围：-2147483648~2147483647
 * @param  Length 要显示数字的长度，范围：1~10
 * @retval 无
 */
void OLED_ShowSignedNum(uint8_t Line, uint8_t Column, int32_t Number, uint8_t Length)
{
    uint8_t i;
    uint32_t Number1;
    if (Number >= 0)
    {
        OLED_ShowChar(Line, Column, '+');
        Number1 = Number;
    }
    else
    {
        OLED_ShowChar(Line, Column, '-');
        Number1 = -Number;
    }
    for (i = 0; i < Length; i++)
    {
        OLED_ShowChar(Line, Column + i + 1, Number1 / OLED_Pow(10, Length - i - 1) % 10 + '0');
    }
}

/**
 * @brief  OLED显示数字（十六进制，正数）
 * @param  Line 起始行位置，范围：1~4
 * @param  Column 起始列位置，范围：1~16
 * @param  Number 要显示的数字，范围：0~0xFFFFFFFF
 * @param  Length 要显示数字的长度，范围：1~8
 * @retval 无
 */
void OLED_ShowHexNum(uint8_t Line, uint8_t Column, uint32_t Number, uint8_t Length)
{
    uint8_t i, SingleNumber;
    for (i = 0; i < Length; i++)
    {
        SingleNumber = Number / OLED_Pow(16, Length - i - 1) % 16;
        if (SingleNumber < 10)
        {
            OLED_ShowChar(Line, Column + i, SingleNumber + '0');
        }
        else
        {
            OLED_ShowChar(Line, Column + i, SingleNumber - 10 + 'A');
        }
    }
}

/**
 * @brief  OLED显示数字（二进制，正数）
 * @param  Line 起始行位置，范围：1~4
 * @param  Column 起始列位置，范围：1~16
 * @param  Number 要显示的数字，范围：0~1111 1111 1111 1111
 * @param  Length 要显示数字的长度，范围：1~16
 * @retval 无
 */
void OLED_ShowBinNum(uint8_t Line, uint8_t Column, uint32_t Number, uint8_t Length)
{
    uint8_t i;
    for (i = 0; i < Length; i++)
    {
        OLED_ShowChar(Line, Column + i, Number / OLED_Pow(2, Length - i - 1) % 2 + '0');
    }
}

/**
 * @brief  OLED初始化
 * @param  无
 * @retval 无
 */
void OLED_Init(void)
{
  

	Delay_ms(100);

    OLED_WriteCommand(0xAE); // 关闭显示

    OLED_WriteCommand(0xD5); // 设置显示时钟分频比/振荡器频率
    OLED_WriteCommand(0x80);

    OLED_WriteCommand(0xA8); // 设置多路复用率
    OLED_WriteCommand(0x3F);

    OLED_WriteCommand(0xD3); // 设置显示偏移
    OLED_WriteCommand(0x00);

    OLED_WriteCommand(0x40); // 设置显示开始行

    OLED_WriteCommand(0xA1); // 设置左右方向，0xA1正常 0xA0左右反置

    OLED_WriteCommand(0xC8); // 设置上下方向，0xC8正常 0xC0上下反置

    OLED_WriteCommand(0xDA); // 设置COM引脚硬件配置
    OLED_WriteCommand(0x12);

    OLED_WriteCommand(0x81); // 设置对比度控制
    OLED_WriteCommand(0xCF);

    OLED_WriteCommand(0xD9); // 设置预充电周期
    OLED_WriteCommand(0xF1);

    OLED_WriteCommand(0xDB); // 设置VCOMH取消选择级别
    OLED_WriteCommand(0x30);

    OLED_WriteCommand(0xA4); // 设置整个显示打开/关闭

    OLED_WriteCommand(0xA6); // 设置正常/倒转显示

    OLED_WriteCommand(0x8D); // 设置充电泵
    OLED_WriteCommand(0x14);

    OLED_WriteCommand(0xAF); // 开启显示

    OLED_Clear(); // OLED清屏
}

oled.h

cs 复制代码

#ifndef __OLED_H
#define __OLED_H

void OLED_Init(void);
void OLED_ShowBinNum(uint8_t Line, uint8_t Column, uint32_t Number, uint8_t Length);
void OLED_ShowHexNum(uint8_t Line, uint8_t Column, uint32_t Number, uint8_t Length);
void OLED_ShowSignedNum(uint8_t Line, uint8_t Column, int32_t Number, uint8_t Length);
void OLED_ShowNum(uint8_t Line, uint8_t Column, uint32_t Number, uint8_t Length);
uint32_t OLED_Pow(uint32_t X, uint32_t Y);
void OLED_ShowString(uint8_t Line, uint8_t Column, char *String);
void OLED_ShowChar(uint8_t Line, uint8_t Column, char Char);
void OLED_Clear(void);
void OLED_SetCursor(uint8_t Y, uint8_t X);
void OLED_WriteData(uint8_t Data);
void OLED_WriteCommand(uint8_t Command);


#endif

oled_font.h(字模可自己加)

cs 复制代码

#ifndef __OLED_FONT_H
#define __OLED_FONT_H

#include <stdint.h>

/*OLED字模库，宽8像素，高16像素*/
const uint8_t OLED_F8x16[][16]=
{
	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
};

#endif

补充知识

软件模拟I2C的优点：

灵活性：软件模拟I2C可以在任意可编程的GPIO口上实现，因此更加灵活，不受硬件限制。适用性：在某些特殊情况下，没有硬件I2C模块或者需要特定的I2C通信功能时，软件模拟I2C可能是唯一的选择。移植性：软件模拟I2C通常可以直接移植到不同的硬件平台上，而不需要对硬件进行修改。

学习和调试：对于初学者来说，通过软件模拟I2C可以更好地理解I2C通信协议的工作原理，以及在调试时可以更容易地监视和控制信号的传输。

软件模拟I2C的缺点：

性能受限：软件模拟I2C通常比硬件I2C慢，并且会消耗更多的CPU资源，可能导致系统性能下降。

时序控制复杂：实现软件模拟I2C需要精确控制时序和延迟，特别是在高速通信时，时序控制可能变得更加复杂。

稳定性差：软件模拟I2C通常更容易受到外部环境的影响，如噪声、干扰等，可能导致通信失败或错误。

硬件I2C的优点

性能高：硬件I2C模块内置于微控制器中，具有专门的硬件电路和指令集来执行I2C通信操作，因此通常具有更高的性能和效率。稳定性好：硬件I2C经过严格的设计和验证，能够提供稳定可靠的通信性能，不容易受到外部干扰的影响。

低功耗：硬件I2C模块通常设计为低功耗模式，能够有效地降低系统功耗。

硬件I2C的缺点：

受硬件限制：硬件I2C模块通常只能使用在特定的GPIO口上，受到硬件限制，缺乏灵活性。

复杂度较高：有时硬件I2C模块的配置和使用可能会较为复杂，需要一定的经验和了解。