STM32F103 SPI软件模拟（SSD1306）

有关SPI通信协议我们在《通信协议-SPI》已经进行了详细的介绍，因此这一节不再重复介绍。

一、软件/硬件`SPI`

想要控制STM32产生SPI方式的通讯，可以采用软件模拟或硬件SPI这两种方式。

1.1 软件模拟

所谓软件模拟，即直接使用CPU内核按照SPI协议的要求控制GPIO输出高低电平。

1.2 硬件`SPI`

硬件SPI是指直接利用STM32芯片中的硬件SPI外设，该硬件SPI外设跟USART串口外设类似，只要配置好对应的寄存器，外设就会产生标准串口协议的时序。

使用它的SPI外设则可以方便地通过外设寄存器产生SPI协议方式的通讯，如初始化好SPI外设后，只需要把某寄存器位置1，那么外设就会控制对应的SCK及MOSI/MISO线自动进行SPI数据传输，而不需要内核直接控制引脚的电平。

相对来说，硬件SPI直接使用外设来控制引脚，可以减轻CPU的负担。不过使用硬件SPI时必须使用某些固定的引脚作为SCL和MOSI/MISO，软件模拟SPI则可以使用任意GPIO引脚，相对比较灵活。

在本开发板中，由于STM32F103RCT6芯片引脚较少，资源比较紧张，在设计硬件时不方便使用硬件SPI指定的引脚连接外部设备，所以在控制程序上这里使用软件模拟SPI的方式。

回到顶部

二、`OLED128x64`（`SSD1306`）

2.1 回顾

有关OLED128x64（SSD1306）可以参考《Mini2440裸机开发之SPI（OLED SSD1306）》小节中的介绍；

在《Mini2440裸机开发之SPI（OLED SSD1306）》我们介绍了SSD1306的常用命令，以及SPI通信方式。

后续我们又在《linux驱动移植-SPI驱动移植（OLED SSD1306）》中介绍了SPI设备驱动的编写，并以OLED SSD1306作为学习SPI的测试设备。

2.2 硬件接线

当SSD1306选定SPI接口方式，SPI引脚定义：

CS：片选信号；连接是STM32F103的PC0引脚；
DC：命令数据选择引脚；连接STM32F103的PC1引脚；
- 0：读写命令；
- 1：读写数据；
RES：模块复位引脚，低电平有效；连接STM32F103的PC2引脚；
D1：MOSI引脚，SPI数据线，主设备输出从设备输入引脚；连接STM32F103的PC3引脚；
D0：SCLK引脚，SPI时钟线；连接STM32F103的PC4引脚；
VCC：电源正极3.3~5V，连接STM32F103的PC5引脚；
GND：电源地，连接STM32F103的PC6引脚。

回到顶部

三、`OLED`源码实现

3.1 `GPIO`初始化

配置PC0~PC6引脚，均配置为通用推挽输出，最大速度2MHZ；

/*******************************************************************************************
 *4线SPI使用说明：
 *VBT 供内部DC-DC电压，3.3~4.3V，如果使用5V电压，为保险起见串一个100~500欧的电阻
 *VCC 供内部逻辑电压 1.8~6V   
 *GND 地

 *BS0 低电平
 *BS1 低电平
 *BS2 低电平

 *CS  片选管脚
 *DC  命令数据选择管脚
 *RES 模块复位管脚 
 *D0（SCLK） ，时钟脚，由MCU控制
 *D1（MOSI） ，主输出从输入数据脚，由MCU控制

 *D2 悬空      
 *D3-D7 ， 低电平 ， 也可悬空，但最好设为低电平
 *RD  低电平 ，也可悬空，但最好设为低电平
 *RW  低电平 ，也可悬空，但最好设为低电平
 *RD  低电平 ，也可悬空，但最好设为低电平   
************************************************************************************************/

//************************************************************12864端口定义*********************************
#define OLED_GND   PCout(6)				 //GND
#define OLED_VCC   PCout(5)				 //VCC
#define OLED_SCL   PCout(4)              //串行时钟线
#define OLED_SDA   PCout(3)              //串行数据线
#define OLED_RST   PCout(2)              //硬复位
#define OLED_DC    PCout(1)              //命令/数据标志 0：读写命令  1：读写数据
#define OLED_CS    PCout(0)              //片选信号

/*******************************************************************************
 *
 *		Description:  初始化所用到的引脚
 *
 ******************************************************************************/
void OLED12864_GPIO_Init(void)         //初始化所用到的引脚
{
     gpio_init(PC0,GPO_PUSH_PULL_2,HIGH);
     gpio_init(PC1,GPO_PUSH_PULL_2,HIGH);
     gpio_init(PC2,GPO_PUSH_PULL_2,HIGH);
     gpio_init(PC3,GPO_PUSH_PULL_2,HIGH);
     gpio_init(PC4,GPO_PUSH_PULL_2,HIGH);
	 gpio_init(PC5,GPO_PUSH_PULL_2,HIGH);
	 gpio_init(PC6,GPO_PUSH_PULL_2,LOW);
};

3.2 写命令

写命令需要将DC设置为低电平，然后发送一个字节的命令即可；

/*******************************************************************************
 *
 *		Description:  写命令 DC=0   CS=0 CLK上升沿数据传递 
 *					  数据从高位开始写入
 *
 ******************************************************************************/
 void OLED_Wcmd(u8 cmd) 				  //写命令
 {
    u8 i;
    OLED_CS=0;                       //片选
	OLED_DC=0;						 //写命令
    for(i=0;i<8;i++)
	{
	  OLED_SCL=0;
	  if(cmd&0x80)
	     OLED_SDA=1;
	  else
	     OLED_SDA=0;
	  OLED_SCL=1;
	  cmd <<=1;
	}
	OLED_CS=1;						//锁存
 }

3.3 写数据

写数据需要将DC设置为高电平，然后发送一个字节的数据即可；

/*******************************************************************************
 *
 *		Description:  写数据 DC=1   CS=0 CLK上升沿数据传递 
 *					  数据从高位开始写入  
 *
 ******************************************************************************/
 void OLED_Wdata(u8 data) 			  //写数据
 {
    u8 i;
    OLED_CS=0;                       //片选
	OLED_DC=1;						 //写数据
    for(i=0;i<8;i++)
	{
	  OLED_SCL=0;
	  if(data&0x80)
	     OLED_SDA=1;
	  else
	     OLED_SDA=0;
	  OLED_SCL=1;
	  data <<=1;
	}
	OLED_CS=1;						//锁存
 }

3.4 设置`OLED`坐标

设置R坐标需要使用到两个命令：

设置页地址，使用单字节指令： 0xB0H + A[3:0]；
设置列地址，使用单字节指令： 0x00H / 0x10H （低/高）+ A[3:0] ；

实现如下：

/***************************************************************************************************
 *
 *	  Description:  OLED12864设置坐标    一个ASCII字符字符占用6*8    6列8行
 *   		   x ：  设置列地址0~0X7F
 *			   y :  设置页地址0~7 
 *
 **************************************************************************************************/ 
void OLED_Pos(u8 x,u8 y)     			  //坐标设定
{
  OLED_Wcmd(0xB0+y);
  OLED_Wcmd(((x&0xF0)>>4)|0x10);          //设置列地址高四位
  OLED_Wcmd((x&0x0F)|0x01);				  //设置列地址低四位
}

3.5 清屏

清屏需要将OLED所有的页数据清零；

//**************************************清屏*******************************
void OLED_Clear(void)
{
	u8 x;
	u8 y;	
	for(y=0;y<8;y++)
	{
		OLED_Wcmd(0xB0+y);             //选择页
		OLED_Wcmd(0x01);
		OLED_Wcmd(0x10);
		for(x=0;x<0x80;x++)
			OLED_Wdata(0x00);		   //每次清1列
	}
}

3.6 `OLED`初始化

初始化代码如下所示，这里我们就不深究每个命令的含义了，具体查看数据手册；

/***************************************************************************************************
 *
 *	  Description:  OLED12864初始化
 *
 *
**************************************************************************************************/ 
 void OLED12864_Init(void)			  //初始化配置
 {
   OLED_SCL=1;
   OLED_CS=0;
   OLED_RST=0;
   delay_ms(50);              //复位
   OLED_RST=1;
   OLED_Wcmd(0xAE);            //显示关     
   OLED_Wcmd(0x00)   ;         //设置列低位地址
   OLED_Wcmd(0x10);            //设置列高位地址
   OLED_Wcmd(0x40);            //--set start line address  Set Mapping RAM Display Start Line (0x00~0x3F)
   OLED_Wcmd(0X81);            //设置对比度   
   OLED_Wcmd(0xCF);            //值越大 越亮  
   OLED_Wcmd(0xA1);            //设置列左右反置     0xa0左右反置 0xa1正常
   OLED_Wcmd(0xC8);            //设置行上下反置     0xc0上下反置 0xc8正常
   OLED_Wcmd(0xA6);            //设置正常显示
   OLED_Wcmd(0x20);            //设置页地址模式 (0x00/0x01/0x02)
   OLED_Wcmd(0x02);            
   OLED_Wcmd(0x8D);			   //设置电荷磊开关
   OLED_Wcmd(0x14);			   //电荷磊开
   OLED_Wcmd(0xA4);            //字符显示开关 0xA4：开  0xA5：关
   OLED_Wcmd(0xA6);            // 背景色显示开关  0xA6:关   0xA7:开
   OLED_Wcmd(0xAF);            //显示开 
   OLED_Clear();               //初始清屏
   OLED_Pos(0,0);  
 }

3.7 显示字符

关于字符的显示原理这里不重复介绍了，具体可以查看《Mini2440裸机开发之LCD编程（GB2312、ASCII字库制作）》。

/******************************************************************************
 *
 *		 oled128x64点阵  分为八页  每页128个字符	  一页中的每一列即一个字符（8位） 共128列
                         每次写入一个字符  即写入一页中的一列    从上到下依次为D0~D7
						 采用串行SPI方式写入   是从高位（D7）到低位(D0)依次写入
 *		 初始化步骤：1.关闭显示
 					 2.设置对比度
                     3.设置页地址
					 4.设置列地址
					 5.电荷磊设置
					 6.显示开
					 7.清屏 写入'\0'
 *
 *
 ****************************************************************************/


/*****************************************************************************************************
 *
 *		从ASCII 0x20 开始的点阵    一个字节占6行8列 
 *					   取模方式    列行式 低位在前  
 *
 *
 *****************************************************************************************************/
const u8 ASCII6x8[][6] =
{
    { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },   // sp		  ASCII 0x20
    { 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
};

/*****************************************************************************************************
 *
 *		从ASCII 0x20 开始的点阵    一个字节16行8列 
 *					   取模方式    列行式 低位在前  
 *
 *
 ***************************************************************************************************/
const u8  ASCII16x8[][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,//016
  0x00,0x10,0x10,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//117
  0x00,0x70,0x08,0x08,0x08,0x88,0x70,0x00,0x00,0x30,0x28,0x24,0x22,0x21,0x30,0x00,//218
  0x00,0x30,0x08,0x88,0x88,0x48,0x30,0x00,0x00,0x18,0x20,0x20,0x20,0x11,0x0E,0x00,//319
  0x00,0x00,0xC0,0x20,0x10,0xF8,0x00,0x00,0x00,0x07,0x04,0x24,0x24,0x3F,0x24,0x00,//420
  0x00,0xF8,0x08,0x88,0x88,0x08,0x08,0x00,0x00,0x19,0x21,0x20,0x20,0x11,0x0E,0x00,//521
  0x00,0xE0,0x10,0x88,0x88,0x18,0x00,0x00,0x00,0x0F,0x11,0x20,0x20,0x11,0x0E,0x00,//622
  0x00,0x38,0x08,0x08,0xC8,0x38,0x08,0x00,0x00,0x00,0x00,0x3F,0x00,0x00,0x00,0x00,//723
  0x00,0x70,0x88,0x08,0x08,0x88,0x70,0x00,0x00,0x1C,0x22,0x21,0x21,0x22,0x1C,0x00,//824
  0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x00,0x31,0x22,0x22,0x11,0x0F,0x00,//925
  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,//A33
  0x08,0xF8,0x88,0x88,0x88,0x70,0x00,0x00,0x20,0x3F,0x20,0x20,0x20,0x11,0x0E,0x00,//B34
  0xC0,0x30,0x08,0x08,0x08,0x08,0x38,0x00,0x07,0x18,0x20,0x20,0x20,0x10,0x08,0x00,//C35
  0x08,0xF8,0x08,0x08,0x08,0x10,0xE0,0x00,0x20,0x3F,0x20,0x20,0x20,0x10,0x0F,0x00,//D36
  0x08,0xF8,0x88,0x88,0xE8,0x08,0x10,0x00,0x20,0x3F,0x20,0x20,0x23,0x20,0x18,0x00,//E37
  0x08,0xF8,0x88,0x88,0xE8,0x08,0x10,0x00,0x20,0x3F,0x20,0x00,0x03,0x00,0x00,0x00,//F38
  0xC0,0x30,0x08,0x08,0x08,0x38,0x00,0x00,0x07,0x18,0x20,0x20,0x22,0x1E,0x02,0x00,//G39
  0x08,0xF8,0x08,0x00,0x00,0x08,0xF8,0x08,0x20,0x3F,0x21,0x01,0x01,0x21,0x3F,0x20,//H40
  0x00,0x08,0x08,0xF8,0x08,0x08,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//I41
  0x00,0x00,0x08,0x08,0xF8,0x08,0x08,0x00,0xC0,0x80,0x80,0x80,0x7F,0x00,0x00,0x00,//J42
  0x08,0xF8,0x88,0xC0,0x28,0x18,0x08,0x00,0x20,0x3F,0x20,0x01,0x26,0x38,0x20,0x00,//K43
  0x08,0xF8,0x08,0x00,0x00,0x00,0x00,0x00,0x20,0x3F,0x20,0x20,0x20,0x20,0x30,0x00,//L44
  0x08,0xF8,0xF8,0x00,0xF8,0xF8,0x08,0x00,0x20,0x3F,0x00,0x3F,0x00,0x3F,0x20,0x00,//M45
  0x08,0xF8,0x30,0xC0,0x00,0x08,0xF8,0x08,0x20,0x3F,0x20,0x00,0x07,0x18,0x3F,0x00,//N46
  0xE0,0x10,0x08,0x08,0x08,0x10,0xE0,0x00,0x0F,0x10,0x20,0x20,0x20,0x10,0x0F,0x00,//O47
  0x08,0xF8,0x08,0x08,0x08,0x08,0xF0,0x00,0x20,0x3F,0x21,0x01,0x01,0x01,0x00,0x00,//P48
  0xE0,0x10,0x08,0x08,0x08,0x10,0xE0,0x00,0x0F,0x18,0x24,0x24,0x38,0x50,0x4F,0x00,//Q49
  0x08,0xF8,0x88,0x88,0x88,0x88,0x70,0x00,0x20,0x3F,0x20,0x00,0x03,0x0C,0x30,0x20,//R50
  0x00,0x70,0x88,0x08,0x08,0x08,0x38,0x00,0x00,0x38,0x20,0x21,0x21,0x22,0x1C,0x00,//S51
  0x18,0x08,0x08,0xF8,0x08,0x08,0x18,0x00,0x00,0x00,0x20,0x3F,0x20,0x00,0x00,0x00,//T52
  0x08,0xF8,0x08,0x00,0x00,0x08,0xF8,0x08,0x00,0x1F,0x20,0x20,0x20,0x20,0x1F,0x00,//U53
  0x08,0x78,0x88,0x00,0x00,0xC8,0x38,0x08,0x00,0x00,0x07,0x38,0x0E,0x01,0x00,0x00,//V54
  0xF8,0x08,0x00,0xF8,0x00,0x08,0xF8,0x00,0x03,0x3C,0x07,0x00,0x07,0x3C,0x03,0x00,//W55
  0x08,0x18,0x68,0x80,0x80,0x68,0x18,0x08,0x20,0x30,0x2C,0x03,0x03,0x2C,0x30,0x20,//X56
  0x08,0x38,0xC8,0x00,0xC8,0x38,0x08,0x00,0x00,0x00,0x20,0x3F,0x20,0x00,0x00,0x00,//Y57
  0x10,0x08,0x08,0x08,0xC8,0x38,0x08,0x00,0x20,0x38,0x26,0x21,0x20,0x20,0x18,0x00,//Z58
  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,//a65
  0x08,0xF8,0x00,0x80,0x80,0x00,0x00,0x00,0x00,0x3F,0x11,0x20,0x20,0x11,0x0E,0x00,//b66
  0x00,0x00,0x00,0x80,0x80,0x80,0x00,0x00,0x00,0x0E,0x11,0x20,0x20,0x20,0x11,0x00,//c67
  0x00,0x00,0x00,0x80,0x80,0x88,0xF8,0x00,0x00,0x0E,0x11,0x20,0x20,0x10,0x3F,0x20,//d68
  0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x1F,0x22,0x22,0x22,0x22,0x13,0x00,//e69
  0x00,0x80,0x80,0xF0,0x88,0x88,0x88,0x18,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//f70
  0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x6B,0x94,0x94,0x94,0x93,0x60,0x00,//g71
  0x08,0xF8,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x3F,0x21,0x00,0x00,0x20,0x3F,0x20,//h72
  0x00,0x80,0x98,0x98,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//i73
  0x00,0x00,0x00,0x80,0x98,0x98,0x00,0x00,0x00,0xC0,0x80,0x80,0x80,0x7F,0x00,0x00,//j74
  0x08,0xF8,0x00,0x00,0x80,0x80,0x80,0x00,0x20,0x3F,0x24,0x02,0x2D,0x30,0x20,0x00,//k75
  0x00,0x08,0x08,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//l76
  0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x20,0x3F,0x20,0x00,0x3F,0x20,0x00,0x3F,//m77
  0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x3F,0x21,0x00,0x00,0x20,0x3F,0x20,//n78
  0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x1F,0x20,0x20,0x20,0x20,0x1F,0x00,//o79
  0x80,0x80,0x00,0x80,0x80,0x00,0x00,0x00,0x80,0xFF,0xA1,0x20,0x20,0x11,0x0E,0x00,//p80
  0x00,0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x0E,0x11,0x20,0x20,0xA0,0xFF,0x80,//q81
  0x80,0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x20,0x20,0x3F,0x21,0x20,0x00,0x01,0x00,//r82
  0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x33,0x24,0x24,0x24,0x24,0x19,0x00,//s83
  0x00,0x80,0x80,0xE0,0x80,0x80,0x00,0x00,0x00,0x00,0x00,0x1F,0x20,0x20,0x00,0x00,//t84
  0x80,0x80,0x00,0x00,0x00,0x80,0x80,0x00,0x00,0x1F,0x20,0x20,0x20,0x10,0x3F,0x20,//u85
  0x80,0x80,0x80,0x00,0x00,0x80,0x80,0x80,0x00,0x01,0x0E,0x30,0x08,0x06,0x01,0x00,//v86
  0x80,0x80,0x00,0x80,0x00,0x80,0x80,0x80,0x0F,0x30,0x0C,0x03,0x0C,0x30,0x0F,0x00,//w87
  0x00,0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x31,0x2E,0x0E,0x31,0x20,0x00,//x88
  0x80,0x80,0x80,0x00,0x00,0x80,0x80,0x80,0x80,0x81,0x8E,0x70,0x18,0x06,0x01,0x00,//y89
  0x00,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x21,0x30,0x2C,0x22,0x21,0x30,0x00,//z90
  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
};
/*****************************************************************************************************
 *
 *		从ASCII 0x20 开始的点阵    一个字节8行16列 
 *					   取模方式    列行式 低位在前  
 *
 *
 ***************************************************************************************************/
const u8 CHINESE8x16[][16]=
{
  0x00,0x00,0x20,0x28,0x24,0x94,0xB4,0x5C,0x32,0x54,0x54,0x54,0x14,0x10,0x10,0x00,   /*"安",0*/
  0x00,0x00,0x14,0x7C,0x0A,0x78,0x5C,0x6A,0x54,0x6A,0x58,0x26,0x5A,0x40,0x40,0x00,   /*"徽",1*/
  0x00,0x00,0x40,0x54,0x3C,0x04,0x44,0x5C,0x74,0x7C,0x54,0x4A,0x4E,0x46,0x40,0x00,   /*"理",2*/
  0x00,0x00,0x40,0x40,0x40,0x44,0x44,0x24,0x5C,0x44,0x44,0x40,0x40,0x40,0x00,0x00,   /*"工",3*/
  0x00,0x00,0x00,0x00,0x50,0x48,0x28,0x1E,0x28,0x28,0x48,0x48,0x40,0x40,0x00,0x00,   /*"大",4*/
  0x00,0x00,0x08,0x28,0x28,0x2A,0x28,0x9A,0x6E,0x2C,0x27,0x24,0x24,0x04,0x00,0x00,   /*"学",5*/
  0x00,0x40,0x48,0x28,0x18,0x2C,0x40,0x48,0x34,0x2A,0x48,0x4C,0x40,0x40,0x00,0x00,   /*"欢",6*/
  0x00,0x00,0x40,0x3A,0x48,0x40,0x5C,0x54,0x4A,0x7E,0x44,0x44,0x5C,0x40,0x00,0x00,   /*"迎",7*/
  0x00,0x10,0x10,0x08,0x7C,0x02,0x28,0x08,0x04,0x8A,0x78,0x08,0x04,0x24,0x00,0x00,   /*"你",8*/
};

亲爱的读者和支持者们，自动博客加入了打赏功能，陆陆续续收到了各位老铁的打赏。在此，我想由衷地感谢每一位对我们博客的支持和打赏。你们的慷慨与支持，是我们前行的动力与源泉。

日期	姓名	金额
2023-09-06	*源	19
2023-09-11	*朝科	88
2023-09-21	*号	5
2023-09-16	*真	60
2023-10-26	*通	9.9
2023-11-04	*慎	0.66
2023-11-24	*恩	0.01
2023-12-30	I*B	1
2024-01-28	*兴	20
2024-02-01	QYing	20
2024-02-11	*督	6
2024-02-18	一*x	1
2024-02-20	c*l	18.88
2024-01-01	*I	5
2024-04-08	*程	150
2024-04-18	*超	20
2024-04-26	.*V	30
2024-05-08	D*W	5
2024-05-29	*辉	20
2024-05-30	*雄	10
2024-06-08	*:	10
2024-06-23	小狮子	666
2024-06-28	*s	6.66
2024-06-29	*炼	1
2024-06-30	*!	1
2024-07-08	*方	20
2024-07-18	A*1	6.66
2024-07-31	*北	12
2024-08-13	*基	1
2024-08-23	n*s	2
2024-09-02	*源	50
2024-09-04	*J	2
2024-09-06	*强	8.8
2024-09-09	*波	1
2024-09-10	*口	1
2024-09-10	*波	1
2024-09-12	*波	10
2024-09-18	*明	1.68
2024-09-26	B*h	10
2024-09-30	岁	10
2024-10-02	M*i	1
2024-10-14	*朋	10
2024-10-22	*海	10
2024-10-23	*南	10
2024-10-26	*节	6.66
2024-10-27	*o	5
2024-10-28	W*F	6.66
2024-10-29	R*n	6.66
2024-11-02	*球	6
2024-11-021	*鑫	6.66
2024-11-25	*沙	5
2024-11-29	C*n	2.88

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大奥特曼打小怪兽

STM32F103 SPI软件模拟（SSD1306）

一、软件/硬件`SPI`

1.1 软件模拟

1.2 硬件`SPI`

二、`OLED128x64`（`SSD1306`）

2.1 回顾

2.2 硬件接线

三、`OLED`源码实现

3.1 `GPIO`初始化

3.2 写命令

3.3 写数据

3.4 设置`OLED`坐标

3.5 清屏

3.6 `OLED`初始化

3.7 显示字符

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大奥特曼打小怪兽

STM32F103 SPI软件模拟（SSD1306）

一、软件/硬件SPI

1.1 软件模拟

1.2 硬件SPI

二、OLED128x64（SSD1306）

2.1 回顾

2.2 硬件接线

三、OLED源码实现

3.1 GPIO初始化

3.2 写命令

3.3 写数据

3.4 设置OLED坐标

3.5 清屏

3.6 OLED初始化

3.7 显示字符

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一、软件/硬件`SPI`

1.2 硬件`SPI`

二、`OLED128x64`（`SSD1306`）

三、`OLED`源码实现

3.1 `GPIO`初始化

3.4 设置`OLED`坐标

3.6 `OLED`初始化