一、SPI 通信技术
        显示屏（LCD、OLED）接口一般有I2C、SPI、UART、RGB、LVDS、MIPI、EDP和DP等。一般3.5寸以下的小尺寸LCD屏，显示数据量比较少，普遍采用低速串口，如I2C、SPI、UART。SPI（Serial Peripheral Interface）是全双工，同步的通信总线，以主从方式工作，这种模式通常有一个主设备和一个或多个从设备，需要至少4根线，事实上3根也可以（单向传输时，MISO、MISI取其一），节约了芯片的管脚。
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        这些数据线是MISO（主设备数据输入）、MOSI（主设备数据输出）、SCLK（时钟）、CS（片选）。
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  \$ ?* l2 Z& ]# ^（1）MISO– Master Input Slave Output，主设备数据输入，从设备数据输出；
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（2）MOSI– Master Output Slave Input，主设备数据输出，从设备数据输入；
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7 k. b' p4 }. d/ h2 ]4 T" z  y: D（3）SCLK – Serial Clock，时钟信号，由主设备产生；
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) f+ F' x9 {) H* G（4）CS – Chip Select，从设备使能信号，由主设备控制。

        CS是控制芯片是否被选中的，也就是说只有片选信号为预先规定的使能信号时（高电位或低电位），对此芯片的操作才有效。。SCK提供时钟脉冲，SDI，SDO则基于此脉冲完成数据传输。
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, @: d9 Q1 k/ @5 @7 ~& z8 r二、SPI通信参配
        本文采用的开发板是stm32L496VGT3,该开发板的OLED屏是240*240像素，采用SPI协议通讯，MCU采用4-Line SPI 的接口加上电源、重置等接口，实现 LCD 显示屏控制及输出显示，原理图如下：
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* F7 p: d0 [+ K$ m5 I8 m# i5 ]         LCD 显示屏针脚定义：
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$ U& Y0 k  }, l' A         MCU连接LCD的芯片引脚定义如下：

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1 O; c5 X2 D3 P- \: W$ g) S/ w         各个引脚的具体参数：
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三、SPI设置（cubeMx）
        在cubeIDE基于stm32L496VGT3芯片创建工程，打开界面配置（cubeMx），配置OLED屏的通信相关信息。本文是在一定基础上直接操作
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  ^; b$ v# k5 c  j6 {' s        假设已经做好了时钟配置、lpusart调试输出，先直接设置OLED的SPI接口信息：

        1）开启SPI1
        本文只是纯粹的MCU向OLED屏输出信号，因此选择Transmit Only Master模式。
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         2）添加SPI1的DMA支持



7 N( R2 ^% ]- U7 M' y6 y0 a/ r         3）开启spi1的中断功能
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; ?8 q8 L) c8 L+ N6 B* A+ [         4）设置oled屏控制的辅助引脚、设置名称及调整配置参数
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         5）调整SPI1配置参数


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         6）完成配置后，点击保存或生成代码的按钮生成代码
四、SPI通信及OLED屏点亮
        在ICore目录创建oled文件夹，创建oled.h、oled.c的LCD驱动文件。
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        1）辅助引脚设值
% E$ a4 ~* |0 ?1 _0 `' I        在oled.h中加入对LCD引脚（GPIO）设值控制函数

1. //对该位写1或0
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2. #define Data_Cmd_State(__D_C_State__)        HAL_GPIO_WritePin(LCD_DCX_GPIO_Port, LCD_DCX_Pin, (GPIO_PinState)(__D_C_State__))
   
3. #define OLED_RST_State(__RST_State__)        HAL_GPIO_WritePin(LCD_RST_GPIO_Port, LCD_RST_Pin, (GPIO_PinState)(__RST_State__))
   
4. #define LCD_PWR_State(__PWR_State__)        HAL_GPIO_WritePin(LCD_PWR_GPIO_Port, LCD_PWR_Pin, (GPIO_PinState)(__PWR_State__))

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5 P! Y8 [( B3 p        2）spi1写入数据实现
        通过调用HAL标准库的HAL_SPI_Transmit函数实现对spi1(hspi1)实现写入命令函数或数据写入函数，也提供LcdWriteDataMultiple函数一次写入多个数据

1. /********************************************************************
   
2. *
   
3. *   LcdWriteReg
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4. *
   
5. *         Function description:
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6. *   Sets display register
   
7. */
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8. void LcdWriteReg(uint8_t Data)
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9. {
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10.           Data_Cmd_State(0);
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11.           HAL_SPI_Transmit(&hspi1, &Data, 1, 10);
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12. }
    
13. 
    
14. /********************************************************************
    
15. *
    
16. *          LcdWriteData
    
17. *
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18. *         Function description:
    
19. *   Writes a value to a display register
    
20. */
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21. void LcdWriteData(uint8_t Data)
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22. {
    
23.           Data_Cmd_State(1);
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24.           HAL_SPI_Transmit(&hspi1, &Data, 1, 10);
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25. }
    
26. 
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27. /********************************************************************
    
28. *
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29. *        LcdWriteDataMultiple
    
30. *
    
31. *         Function description:
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32. *   Writes multiple values to a display register.
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33. */
    
34. void LcdWriteDataMultiple(uint8_t * pData, uint32_t NumItems)
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35. {
    
36.           Data_Cmd_State(1);
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37.           HAL_SPI_Transmit(&hspi1, pData, NumItems, 10);
    
38. }

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" `7 T0 c/ w0 w1 B1 E6 s& ^        3）OLED初始化指令执行
$ }# V) E8 ^7 C5 P: h        定义OLED屏的初始化指令集及指令设置函数
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1. /* Init script function */
   
2. struct OLED_function {
   
3.   uint8_t cmd;
   
4.   uint16_t data;
   
5. };
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6. 
   
7. /* Init script commands */
   
8. enum OLED_cmd {
   
9.   OLED_START,
   
10.   OLED_END,
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11.   OLED_CMD,
    
12.   OLED_DATA,
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13.   OLED_DELAY
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14. };
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15. //以上可放置头文件中
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16. //以下放置源文件中
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17. //初始化命令集
    
18. static struct OLED_function OLED_cfg_script[] = {
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19.   {OLED_START, OLED_START},
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20.   {OLED_CMD, 0x11},
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21.   {OLED_DELAY, 120},
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22.   {OLED_CMD, 0x36},
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23.   {OLED_DATA, 0x00},
    
24.   {OLED_CMD, 0x3a},
    
25.   {OLED_DATA, 0x65},
    
26.   {OLED_CMD, 0xb2},
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27.   {OLED_DATA, 0x0c},
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28.   {OLED_DATA, 0x0c},
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29.   {OLED_DATA, 0x00},
    
30.   {OLED_DATA, 0x33},
    
31.   {OLED_DATA, 0x33},
    
32.   {OLED_CMD, 0xb7},
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33.   {OLED_DATA, 0x72},
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34.   {OLED_CMD, 0xbb},
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35.   {OLED_DATA, 0x3d},
    
36.   {OLED_CMD, 0xc0},
    
37.   {OLED_DATA, 0x2c},
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38.   {OLED_CMD, 0xc2},
    
39.   {OLED_DATA, 0x01},
    
40.   {OLED_CMD, 0xc3},
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41.   {OLED_DATA, 0x19},
    
42.   {OLED_CMD, 0xc4},
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43.   {OLED_DATA, 0x20},
    
44.   {OLED_CMD, 0xc6},
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45.   {OLED_DATA, 0x0f},
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46.   {OLED_CMD, 0xd0},
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47.   {OLED_DATA, 0xa4},
    
48.   {OLED_DATA, 0xa1},
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49.   {OLED_CMD, 0xe0},
    
50.   {OLED_DATA, 0x70},
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51.   {OLED_DATA, 0x04},
    
52.   {OLED_DATA, 0x08},
    
53.   {OLED_DATA, 0x09},
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54.   {OLED_DATA, 0x09},
    
55.   {OLED_DATA, 0x05},
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56.   {OLED_DATA, 0x2a},
    
57.   {OLED_DATA, 0x33},
    
58.   {OLED_DATA, 0x41},
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59.   {OLED_DATA, 0x07},
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60.   {OLED_DATA, 0x13},
    
61.   {OLED_DATA, 0x13},
    
62.   {OLED_DATA, 0x29},
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63.   {OLED_DATA, 0x2f},
    
64.   {OLED_CMD, 0xe1},
    
65.   {OLED_DATA, 0x70},
    
66.   {OLED_DATA, 0x03},
    
67.   {OLED_DATA, 0x09},
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68.   {OLED_DATA, 0x0a},
    
69.   {OLED_DATA, 0x09},
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70.   {OLED_DATA, 0x06},
    
71.   {OLED_DATA, 0x2b},
    
72.   {OLED_DATA, 0x34},
    
73.   {OLED_DATA, 0x41},
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74.   {OLED_DATA, 0x07},
    
75.   {OLED_DATA, 0x12},
    
76.   {OLED_DATA, 0x14},
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77.   {OLED_DATA, 0x28},
    
78.   {OLED_DATA, 0x2e},
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79.   {OLED_CMD, 0x21},
    
80.   {OLED_CMD, 0x29},
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81.   {OLED_CMD, 0x2a},
    
82.   {OLED_DATA, 0x00},
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83.   {OLED_DATA, 0x00},
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84.   {OLED_DATA, 0x00},
    
85.   {OLED_DATA, 0xef},
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86.   {OLED_CMD, 0x2b},
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87.   {OLED_DATA, 0x00},
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88.   {OLED_DATA, 0x00},
    
89.   {OLED_DATA, 0x00},
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90.   {OLED_DATA, 0xef},
    
91.   {OLED_CMD, 0x2c},
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92.   {OLED_END, OLED_END},
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93. };
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94. 
    
95. static void OLED_run_cfg_script()
    
96. {
    
97.           uint8_t data[2] = {0};
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98.           int i = 0;
    
99.           int end_script = 0;
    
100. 
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101.           do {
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102.             switch (OLED_cfg_script[i].cmd) {
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103.             case OLED_START:
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104.               break;
     
105.             case OLED_CMD:
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106.               data[0] = OLED_cfg_script[i].data & 0xff;
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107.               LcdWriteReg(data[0]);
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108.               break;
     
109.             case OLED_DATA:
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110.               data[0] = OLED_cfg_script[i].data & 0xff;
     
111.               LcdWriteData(data[0]);
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112.               break;
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113.             case OLED_DELAY:
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114.               HAL_Delay(OLED_cfg_script[i].data);
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115.               break;
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116.             case OLED_END:
     
117.               end_script = 1;
     
118.             }
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119.             i++;
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120.           } while (!end_script);
     
121. }

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. H; D5 O2 @0 |( g4 P8 U        4）oled初始化
        进行oled屏的初始化函数设计

1. //olde屏重置
   
2. static void OLED_reset()
   
3. {
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4.           OLED_RST_State(0);
   
5.           HAL_Delay(200);
   
6.           OLED_RST_State(1);
   
7.           HAL_Delay(150);
   
8. }
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9. //oled屏初始化
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10. int OLED_init()
    
11. {
    
12.           LCD_PWR_State(0);//回显关闭
    
13.           OLED_reset();    //屏重置
    
14.           OLED_run_cfg_script();//初始化指令集依次执行脚本函数
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15.           LCD_PWR_State(1);//回显开启
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16.           OLED_display_picture();//条形码屏幕显示测试
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17. 
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18.           return HAL_OK;
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19. }

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        5）oled屏幕的亮屏（条形码显示）代码

1. #define LCD_MAX_MEM16_BLOCK             (1 << 6)
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2. #define LCD_PIXEL_PER_BLOCK             (LCD_MAX_MEM16_BLOCK >> 1)
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3. 
   
4. static void spec_send_fb(uint16_t color, uint16_t pixel_num)
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5. {
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6.           uint16_t real_mem[LCD_MAX_MEM16_BLOCK] = {0};
   
7. 
   
8.           for (uint16_t i = 0; i < LCD_MAX_MEM16_BLOCK; ++i) {
   
9.                   real_mem[i] = color;
   
10.           }
    
11.           Data_Cmd_State(GPIO_PIN_SET);
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12.           if (pixel_num <= LCD_MAX_MEM16_BLOCK) {
    
13.                   LcdWriteDataMultiple((uint8_t*)real_mem, pixel_num << 1);
    
14.           } else {
    
15.                   uint16_t count = pixel_num / LCD_MAX_MEM16_BLOCK;
    
16.                   uint16_t remain = pixel_num % LCD_MAX_MEM16_BLOCK;
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17.                   for (uint16_t i = 0; i < count; ++i) {
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18.                           LcdWriteDataMultiple((uint8_t*)real_mem, LCD_MAX_MEM16_BLOCK << 1);
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19.                   }
    
20.                   LcdWriteDataMultiple((uint8_t*)real_mem, remain << 1);
    
21.           }
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22. }
    
23. 
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24. static void OLED_display_picture(void)
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25. {
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26.   LcdWriteReg(OLED_RAMWR);
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27.   spec_send_fb(0x0, WIDTH * HEIGHT / 4);
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28.   spec_send_fb(0x1111, WIDTH * HEIGHT / 4);
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29.   spec_send_fb(0x7777, WIDTH * HEIGHT / 4);
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30.   spec_send_fb(0xeeee, WIDTH * HEIGHT / 4);
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31. }

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! m' i% L3 y! C, t
3 H3 k3 P/ a; P0 w" V) D7 P% f: k      6）驱动调用
( Q+ Z& w3 u- p$ h: H! ~' g        基本功能完成后，在main.c文件实现函数调用
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1.   /* USER CODE BEGIN Includes */
   
2. #include "../../ICore/key/key.h"
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3. #include "../../ICore/led/led.h"
   
4. #include "../../ICore/print/print.h"
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5. #include "../../ICore/usart/usart.h"
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6. #include "../../ICore/oled/oled.h"
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7. /* USER CODE END Includes */
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8. ..............................................
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9.     /* USER CODE BEGIN 2 */
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10.   ResetPrintInit(&hlpuart1);
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11.   HAL_UART_Receive_IT(&hlpuart1,(uint8_t *)&HLPUSART_NewData, 1); //再开启接收中断
    
12.   HLPUSART_RX_STA = 0;
    ! |& `% W" g) t4 Q
13.   OLED_init();
    / ~) ?8 q( L& a
14. 
    4 Z$ ?) w2 O& g% D% o
15.   set_led0_val(0);
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16.   set_led1_val(get_key0_val());
    
17.   /* USER CODE END 2 */
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18.   /* USER CODE BEGIN WHILE */
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19.   while (1)
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20.   {
    4 [7 ]7 M7 M0 }, m
21.     Toggle_led0();
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22.     /* USER CODE END WHILE */

复制代码

        7）编译加载到开发板上

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         8）屏幕效果点亮如下：


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6 l. {; x+ W; x5 O  o, F 五、屏幕输出字符串设计
        【1】字符串编码表
        在ICore/oled目下字符串编码表ASCII.h，具体如下：

1. /*
   $ J# m6 @0 h; L; T8 a  i# E2 f
2. * ASCII.h
   8 S6 \* f+ j9 k* W
3. *
   
4. *  Created on: Jun 11, 2022
   
5. *      Author: Administrator
   6 _6 O$ C  H! y
6. */
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7. 
   % w$ a; o: t- d1 `
8. #ifndef OLED_ASCII_H_
   
9. #define OLED_ASCII_H_
   
10. 
    5 E, R4 V, F0 {) u& R
11. // ------------------  ASCII字模的数据表 ------------------------ //
    
12. // 码表从0x20~0x7e                                                //
    5 g  A+ A, Y( S  a+ S& h
13. // 字库:  纵向取模下高位// （调用时要减512）
    ! Y% O/ m( d6 U" V5 q
14. // -------------------------------------------------------------- //
    
15. const uint8_t ASCII_8x16[] =  {            // ASCII
    
16.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,  // - -
    - I, ?# m4 _, n- x; ]% s5 H; N3 h
17.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    
18. 
    1 Y& L: L( U# s0 s. J4 Z
19.         0x00,0x00,0x38,0xFC,0xFC,0x38,0x00,0x00,  // -!-
    
20.         0x00,0x00,0x00,0x0D,0x0D,0x00,0x00,0x00,
    + B0 Q6 v$ i, R  r. b
21. 
    
22.         0x00,0x0E,0x1E,0x00,0x00,0x1E,0x0E,0x00,  // -"-
    $ L, I+ V. N. M3 G4 \1 V& b/ L
23.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    
24. 
    
25.         0x20,0xF8,0xF8,0x20,0xF8,0xF8,0x20,0x00,  // -#-
    : a9 |* f9 n$ U
26.         0x02,0x0F,0x0F,0x02,0x0F,0x0F,0x02,0x00,
    8 n5 A* K- z1 ~3 n% ^* d: N
27. 
    
28.         0x38,0x7C,0x44,0x47,0x47,0xCC,0x98,0x00,  // -$-
    0 i, _0 X0 m5 V8 E4 X( m. ]* q% Q7 j
29.         0x03,0x06,0x04,0x1C,0x1C,0x07,0x03,0x00,
    6 ]7 o: p1 c$ ]. |
30. 
    4 o3 F! N. g* @, E$ {
31.         0x30,0x30,0x00,0x80,0xC0,0x60,0x30,0x00,  // -%-
    - `3 ?$ x6 T' Y* A" }
32.         0x0C,0x06,0x03,0x01,0x00,0x0C,0x0C,0x00,
    
33. 
    % X0 I3 Z2 M7 p4 E
34.         0x80,0xD8,0x7C,0xE4,0xBC,0xD8,0x40,0x00,  // -&-
    
35.         0x07,0x0F,0x08,0x08,0x07,0x0F,0x08,0x00,
    6 }3 s8 y( n5 o- ?" I1 b) N
36. 
    
37.         0x00,0x10,0x1E,0x0E,0x00,0x00,0x00,0x00,  // -'-
    
38.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    
39. 
    
40.         0x00,0x00,0xF0,0xF8,0x0C,0x04,0x00,0x00,  // -(-
    
41.         0x00,0x00,0x03,0x07,0x0C,0x08,0x00,0x00,
    
42. 
    4 w; H6 @# S' K% D7 |; N. n& m5 P
43.         0x00,0x00,0x04,0x0C,0xF8,0xF0,0x00,0x00,  // -)-
    
44.         0x00,0x00,0x08,0x0C,0x07,0x03,0x00,0x00,
    
45. 
    
46.         0x80,0xA0,0xE0,0xC0,0xC0,0xE0,0xA0,0x80,  // -*-
    ( ~1 N) i7 \( o) \* I, \7 \
47.         0x00,0x02,0x03,0x01,0x01,0x03,0x02,0x00,
    / h) m3 _  M! N% C8 J
48. 
    
49.         0x00,0x80,0x80,0xE0,0xE0,0x80,0x80,0x00,  // -+-
    8 Q: `, D2 l7 d
50.         0x00,0x00,0x00,0x03,0x03,0x00,0x00,0x00,
    * {- B5 b1 Z5 |0 p* |5 h
51. 
    
52.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,  // -,-
    & }$ A' f( X' T1 @8 L
53.         0x00,0x00,0x10,0x1E,0x0E,0x00,0x00,0x00,
    " Q9 a* ?1 z- s
54. 
    ( A& ~/ T+ p: E# ~, R
55.         0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x00,  // ---
    
56.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    
57. 
    
58.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,  // -.-
    8 E2 h3 @/ b7 O! r9 b  x" j
59.         0x00,0x00,0x00,0x0C,0x0C,0x00,0x00,0x00,
    
60. 
    ) d' [+ C; `* R9 d- V
61.         0x00,0x00,0x00,0x80,0xC0,0x60,0x30,0x00,  // -/-
    - `( ]( `8 M2 Z  ~: D
62.         0x0C,0x06,0x03,0x01,0x00,0x00,0x00,0x00,
    
63. 
    1 J4 }( b" z0 k" }. I
64.         0xF8,0xFC,0x04,0xC4,0x24,0xFC,0xF8,0x00,  // -0-
    : D1 J6 {6 X" p9 ?9 w
65.         0x07,0x0F,0x09,0x08,0x08,0x0F,0x07,0x00,
    ( g1 V6 Z: f9 Y: d
66. 
    
67.         0x00,0x10,0x18,0xFC,0xFC,0x00,0x00,0x00,  // -1-
    - _9 R+ Z  Y! J6 [$ V- W
68.         0x00,0x08,0x08,0x0F,0x0F,0x08,0x08,0x00,
    
69. 
    
70.         0x08,0x0C,0x84,0xC4,0x64,0x3C,0x18,0x00,  // -2-
    
71.         0x0E,0x0F,0x09,0x08,0x08,0x0C,0x0C,0x00,
    
72. 
    1 L1 ]/ l- t0 F0 ^, m
73.         0x08,0x0C,0x44,0x44,0x44,0xFC,0xB8,0x00,  // -3-
    
74.         0x04,0x0C,0x08,0x08,0x08,0x0F,0x07,0x00,
    ( p7 K) l2 q+ @
75. 
    , [$ v+ a  `( w' b( X4 t+ W
76.         0xC0,0xE0,0xB0,0x98,0xFC,0xFC,0x80,0x00,  // -4-
    
77.         0x00,0x00,0x00,0x08,0x0F,0x0F,0x08,0x00,
    
78. 
      k  ]% t5 [1 X2 F3 W) J
79.         0x7C,0x7C,0x44,0x44,0xC4,0xC4,0x84,0x00,  // -5-
    
80.         0x04,0x0C,0x08,0x08,0x08,0x0F,0x07,0x00,
    " d7 }( {- x' W$ I) v1 ?1 E
81. 
    " t- _. z& f$ v6 ]. d+ D9 d
82.         0xF0,0xF8,0x4C,0x44,0x44,0xC0,0x80,0x00,  // -6-
    $ h1 v0 [1 ~( H4 W) b0 V6 h
83.         0x07,0x0F,0x08,0x08,0x08,0x0F,0x07,0x00,
    6 b2 B$ m  @( i3 J9 c! n' Z
84. 
    - I% m3 f3 C# {9 Z
85.         0x0C,0x0C,0x04,0x84,0xC4,0x7C,0x3C,0x00,  // -7-
    
86.         0x00,0x00,0x0F,0x0F,0x00,0x00,0x00,0x00,
    5 @) |* \5 B# l& h4 |0 A
87. 
    1 Q9 M4 f# |- ~
88.         0xB8,0xFC,0x44,0x44,0x44,0xFC,0xB8,0x00,  // -8-
    
89.         0x07,0x0F,0x08,0x08,0x08,0x0F,0x07,0x00,
    
90. 
    
91.         0x38,0x7C,0x44,0x44,0x44,0xFC,0xF8,0x00,  // -9-
    
92.         0x00,0x08,0x08,0x08,0x0C,0x07,0x03,0x00,
    
93. 
    
94.         0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00,  // -:-
    
95.         0x00,0x00,0x00,0x06,0x06,0x00,0x00,0x00,
    
96. 
    
97.         0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00,  // -;-
    # v7 K( V! t- ]: o/ Y
98.         0x00,0x00,0x08,0x0E,0x06,0x00,0x00,0x00,
    ; r4 @) M) }- F; W$ V6 N
99. 
    6 w. o) [* F0 {" ]3 [$ m
100.         0x00,0x80,0xC0,0x60,0x30,0x18,0x08,0x00,  // -<-
     3 }( r! a$ T, y1 g4 l% q  c
101.         0x00,0x00,0x01,0x03,0x06,0x0C,0x08,0x00,
     
102. 
     
103.         0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x00,  // -=-
     
104.         0x02,0x02,0x02,0x02,0x02,0x02,0x02,0x00,
     
105. 
     ' S; p2 B: `5 y2 b& g
106.         0x00,0x08,0x18,0x30,0x60,0xC0,0x80,0x00,  // ->-
     
107.         0x00,0x08,0x0C,0x06,0x03,0x01,0x00,0x00,
     
108. 
     
109.         0x18,0x1C,0x04,0xC4,0xE4,0x3C,0x18,0x00,  // -?-
     * R0 l/ [& t: ~3 R" t3 ]9 S# n3 O
110.         0x00,0x00,0x00,0x0D,0x0D,0x00,0x00,0x00,
     
111. 
     2 @6 D$ E  C& q3 \+ \- w
112.         0xF0,0xF8,0x08,0xC8,0xC8,0xF8,0xF0,0x00,  // -@-
     , \* q- _- }; r8 y4 z- ]
113.         0x07,0x0F,0x08,0x0B,0x0B,0x0B,0x01,0x00,
     
114. 
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115.         0xE0,0xF0,0x98,0x8C,0x98,0xF0,0xE0,0x00,  // -A-
     
116.         0x0F,0x0F,0x00,0x00,0x00,0x0F,0x0F,0x00,
     
117. 
     
118.         0x04,0xFC,0xFC,0x44,0x44,0xFC,0xB8,0x00,  // -B-
     2 \' T, ~1 D# L+ R# p
119.         0x08,0x0F,0x0F,0x08,0x08,0x0F,0x07,0x00,
     
120. 
     
121.         0xF0,0xF8,0x0C,0x04,0x04,0x0C,0x18,0x00,  // -C-
     " H: w1 a3 @+ A
122.         0x03,0x07,0x0C,0x08,0x08,0x0C,0x06,0x00,
     : a3 X" O/ @( u. s6 c
123. 
     , L6 s6 x4 C  [3 B( M( j
124.         0x04,0xFC,0xFC,0x04,0x0C,0xF8,0xF0,0x00,  // -D-
     
125.         0x08,0x0F,0x0F,0x08,0x0C,0x07,0x03,0x00,
     
126. 
     ) p# k# E0 P3 r: Y% q
127.         0x04,0xFC,0xFC,0x44,0xE4,0x0C,0x1C,0x00,  // -E-
     
128.         0x08,0x0F,0x0F,0x08,0x08,0x0C,0x0E,0x00,
     
129. 
     
130.         0x04,0xFC,0xFC,0x44,0xE4,0x0C,0x1C,0x00,  // -F-
     ' j4 d7 T& j# t( a% m1 \7 V% W
131.         0x08,0x0F,0x0F,0x08,0x00,0x00,0x00,0x00,
     
132. 
     
133.         0xF0,0xF8,0x0C,0x84,0x84,0x8C,0x98,0x00,  // -G-
     
134.         0x03,0x07,0x0C,0x08,0x08,0x07,0x0F,0x00,
     
135. 
     
136.         0xFC,0xFC,0x40,0x40,0x40,0xFC,0xFC,0x00,  // -H-
     + J/ H* K* s( o, M: l# H" q0 D: {3 n
137.         0x0F,0x0F,0x00,0x00,0x00,0x0F,0x0F,0x00,
     7 i+ v' `& h5 {
138. 
     1 a9 t/ E4 _! l" O6 _; L, X
139.         0x00,0x00,0x04,0xFC,0xFC,0x04,0x00,0x00,  // -I-
     
140.         0x00,0x00,0x08,0x0F,0x0F,0x08,0x00,0x00,
     
141. 
     & R; d& n0 e. u
142.         0x00,0x00,0x00,0x04,0xFC,0xFC,0x04,0x00,  // -J-
     ; K+ i% B3 a( j9 b) v* g+ H
143.         0x07,0x0F,0x08,0x08,0x0F,0x07,0x00,0x00,
     
144. 
     
145.         0x04,0xFC,0xFC,0xC0,0xF0,0x3C,0x0C,0x00,  // -K-
     
146.         0x08,0x0F,0x0F,0x00,0x01,0x0F,0x0E,0x00,
     
147. 
     2 c# R& v+ U0 w  o: y
148.         0x04,0xFC,0xFC,0x04,0x00,0x00,0x00,0x00,  // -L-
     
149.         0x08,0x0F,0x0F,0x08,0x08,0x0C,0x0E,0x00,
     
150. 
     8 x! O2 w  M; k' k3 c* A# y
151.         0xFC,0xFC,0x38,0x70,0x38,0xFC,0xFC,0x00,  // -M-
     
152.         0x0F,0x0F,0x00,0x00,0x00,0x0F,0x0F,0x00,
     / @  P' U5 w. G: y+ @
153. 
     
154.         0xFC,0xFC,0x38,0x70,0xE0,0xFC,0xFC,0x00,  // -N-
     + c' Y7 {. j+ V
155.         0x0F,0x0F,0x00,0x00,0x00,0x0F,0x0F,0x00,
     5 k/ i- V' Z: J* D
156. 
     0 C6 ]* f0 m  }, }. s
157.         0xF0,0xF8,0x0C,0x04,0x0C,0xF8,0xF0,0x00,  // -O-
     $ ]$ o# g3 ?# m
158.         0x03,0x07,0x0C,0x08,0x0C,0x07,0x03,0x00,
     
159. 
     
160.         0x04,0xFC,0xFC,0x44,0x44,0x7C,0x38,0x00,  // -P-
     
161.         0x08,0x0F,0x0F,0x08,0x00,0x00,0x00,0x00,
     2 @+ c. u5 S5 k$ M. {' q7 P0 r0 r
162. 
     5 K. T9 Y2 e5 d, ]7 w; t% g# J5 K
163.         0xF8,0xFC,0x04,0x04,0x04,0xFC,0xF8,0x00,  // -Q-
     
164.         0x07,0x0F,0x08,0x0E,0x3C,0x3F,0x27,0x00,
     * ?7 }  L: T( w1 O! a3 {6 |
165. 
     
166.         0x04,0xFC,0xFC,0x44,0xC4,0xFC,0x38,0x00,  // -R-
     * @; ?( o5 R! l- _/ v$ O
167.         0x08,0x0F,0x0F,0x00,0x00,0x0F,0x0F,0x00,
     
168. 
     7 x5 {4 a3 p! i: q# A, O
169.         0x18,0x3C,0x64,0x44,0xC4,0x9C,0x18,0x00,  // -S-
     
170.         0x06,0x0E,0x08,0x08,0x08,0x0F,0x07,0x00,
     ( w  J$ Y/ G4 l" e. D8 s' f
171. 
     
172.         0x00,0x1C,0x0C,0xFC,0xFC,0x0C,0x1C,0x00,  // -T-
     ( p* {0 `4 O* U, p1 s) e5 H3 c4 e
173.         0x00,0x00,0x08,0x0F,0x0F,0x08,0x00,0x00,
     
174. 
     - L3 T. F7 U; ^# c" R
175.         0xFC,0xFC,0x00,0x00,0x00,0xFC,0xFC,0x00,  // -U-
     
176.         0x07,0x0F,0x08,0x08,0x08,0x0F,0x07,0x00,
     7 L8 B1 w# @" \" ^% k0 x
177. 
     
178.         0xFC,0xFC,0x00,0x00,0x00,0xFC,0xFC,0x00,  // -V-
     
179.         0x01,0x03,0x06,0x0C,0x06,0x03,0x01,0x00,
     7 A  o6 i9 Y, ~# e, ~; ]
180. 
     
181.         0xFC,0xFC,0x00,0x80,0x00,0xFC,0xFC,0x00,  // -W-
     
182.         0x03,0x0F,0x0E,0x03,0x0E,0x0F,0x03,0x00,
     
183. 
     & P0 z' z& M$ @0 s7 g& G' E
184.         0x0C,0x3C,0xF0,0xC0,0xF0,0x3C,0x0C,0x00,  // -X-
     
185.         0x0C,0x0F,0x03,0x00,0x03,0x0F,0x0C,0x00,
     
186. 
     
187.         0x00,0x3C,0x7C,0xC0,0xC0,0x7C,0x3C,0x00,  // -Y-
     % j! w6 @8 h( R# k4 D
188.         0x00,0x00,0x08,0x0F,0x0F,0x08,0x00,0x00,
     
189. 
     4 s% r: M* ~) F2 Z+ g' P
190.         0x1C,0x0C,0x84,0xC4,0x64,0x3C,0x1C,0x00,  // -Z-
     % ?" p) Z8 }% v
191.         0x0E,0x0F,0x09,0x08,0x08,0x0C,0x0E,0x00,
     
192. 
     : m" _" b* q' b& r  K) H2 G& Y
193.         0x00,0x00,0xFC,0xFC,0x04,0x04,0x00,0x00,  // -[-
     0 M  g- V- r: [7 b6 P. x5 C
194.         0x00,0x00,0x0F,0x0F,0x08,0x08,0x00,0x00,
     " I- F$ J8 c  O
195. 
     # x2 h# \# \* F
196.         0x38,0x70,0xE0,0xC0,0x80,0x00,0x00,0x00,  // -\-
     3 `% Q( u4 |1 V4 _" ~
197.         0x00,0x00,0x00,0x01,0x03,0x07,0x0E,0x00,
     " @( u3 D; _& ?4 B1 f7 B
198. 
     
199.         0x00,0x00,0x04,0x04,0xFC,0xFC,0x00,0x00,  // -]-
     9 c2 q4 k' U1 @) i# N+ N
200.         0x00,0x00,0x08,0x08,0x0F,0x0F,0x00,0x00,
     
201. 
     8 C3 C! v0 o* w3 X- w
202.         0x08,0x0C,0x06,0x03,0x06,0x0C,0x08,0x00,  // -^-
     3 n/ k/ \3 }' z' \* U  F( j4 A! K9 [
203.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
     
204. 
     
205.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,  // -_-
     2 O2 h+ d* w% I& h9 C5 V
206.         0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,
       H6 J9 t, z' {  y2 T3 A
207. 
     
208.         0x00,0x00,0x03,0x07,0x04,0x00,0x00,0x00,  // -`-
     - A( g' f5 W4 y+ u& W
209.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
     . m* A$ z1 l+ A3 t4 n3 T
210. 
     
211.         0x00,0xA0,0xA0,0xA0,0xE0,0xC0,0x00,0x00,  // -a-
     ! B& W. I) r9 D/ Y
212.         0x07,0x0F,0x08,0x08,0x07,0x0F,0x08,0x00,
     ; `( @$ C! V& L8 C8 e
213. 
     * v% r; h3 v+ a  k3 f/ f
214.         0x04,0xFC,0xFC,0x20,0x60,0xC0,0x80,0x00,  // -b-
     
215.         0x08,0x0F,0x07,0x08,0x08,0x0F,0x07,0x00,
     ' E1 S; w9 [2 F5 T7 S
216. 
     # ?" Y+ r2 A: I3 H
217.         0xC0,0xE0,0x20,0x20,0x20,0x60,0x40,0x00,  // -c-
     6 H; H4 M8 u  m/ |1 s
218.         0x07,0x0F,0x08,0x08,0x08,0x0C,0x04,0x00,
     - ^; S+ ]; I. c9 J% N
219. 
     
220.         0x80,0xC0,0x60,0x24,0xFC,0xFC,0x00,0x00,  // -d-
     
221.         0x07,0x0F,0x08,0x08,0x07,0x0F,0x08,0x00,
     
222. 
     
223.         0xC0,0xE0,0xA0,0xA0,0xA0,0xE0,0xC0,0x00,  // -e-
     
224.         0x07,0x0F,0x08,0x08,0x08,0x0C,0x04,0x00,
       n' `, n0 _: l8 a8 f6 i1 a
225. 
     
226.         0x40,0xF8,0xFC,0x44,0x0C,0x18,0x00,0x00,  // -f-
     
227.         0x08,0x0F,0x0F,0x08,0x00,0x00,0x00,0x00,
     
228. 
     ' h% @; q( S& K: p0 q, q  W
229.         0xC0,0xE0,0x20,0x20,0xC0,0xE0,0x20,0x00,  // -g-
     
230.         0x27,0x6F,0x48,0x48,0x7F,0x3F,0x00,0x00,
     8 n% h3 {" |2 h( t
231. 
     
232.         0x04,0xFC,0xFC,0x40,0x20,0xE0,0xC0,0x00,  // -h-
     
233.         0x08,0x0F,0x0F,0x00,0x00,0x0F,0x0F,0x00,
     
234. 
     9 s  o7 `* ^( o! l( S# z
235.         0x00,0x00,0x20,0xEC,0xEC,0x00,0x00,0x00,  // -i-
     
236.         0x00,0x00,0x08,0x0F,0x0F,0x08,0x00,0x00,
     
237. 
     * K1 A7 Y$ t- O  h% C9 Q
238.         0x00,0x00,0x00,0x00,0x20,0xEC,0xEC,0x00,  // -j-
     
239.         0x00,0x30,0x70,0x40,0x40,0x7F,0x3F,0x00,
       Z7 `/ V. K$ U# i2 B7 G
240. 
     
241.         0x04,0xFC,0xFC,0x80,0xC0,0x60,0x20,0x00,  // -k-
     
242.         0x08,0x0F,0x0F,0x01,0x03,0x0E,0x0C,0x00,
     
243. 
     * \, r  ^" W5 P8 K. W! X
244.         0x00,0x00,0x04,0xFC,0xFC,0x00,0x00,0x00,  // -l-
     
245.         0x00,0x00,0x08,0x0F,0x0F,0x08,0x00,0x00,
     
246. 
     5 c: L' Y( k7 T' F! q; _
247.         0xE0,0xE0,0x60,0xC0,0x60,0xE0,0xC0,0x00,  // -m-
     0 [' y& ]: L; W+ j# o9 ~
248.         0x0F,0x0F,0x00,0x0F,0x00,0x0F,0x0F,0x00,
     
249. 
     2 h% v% `) T+ G# _- V, t2 j
250.         0x20,0xE0,0xC0,0x20,0x20,0xE0,0xC0,0x00,  // -n-
     , A  R, k+ p8 d! }
251.         0x00,0x0F,0x0F,0x00,0x00,0x0F,0x0F,0x00,
     5 z  {5 Z4 F' s- U4 D" [8 C( r7 H
252. 
     2 z6 J( f8 s+ k/ G$ X0 K4 u
253.         0xC0,0xE0,0x20,0x20,0x20,0xE0,0xC0,0x00,  // -o-
     % J# e# {" Z6 y9 p7 r
254.         0x07,0x0F,0x08,0x08,0x08,0x0F,0x07,0x00,
     
255. 
     
256.         0x20,0xE0,0xC0,0x20,0x20,0xE0,0xC0,0x00,  // -p-
     ! R( M9 H0 G/ B) F8 d
257.         0x40,0x7F,0x7F,0x48,0x08,0x0F,0x07,0x00,
     
258. 
     
259.         0xC0,0xE0,0x20,0x20,0xC0,0xE0,0x20,0x00,  // -q-
     
260.         0x07,0x0F,0x08,0x48,0x7F,0x7F,0x40,0x00,
     1 _% f; O7 N9 A2 p* }7 E* a! {
261. 
     , {. B3 F" |& v) [
262.         0x20,0xE0,0xC0,0x60,0x20,0x60,0xC0,0x00,  // -r-
     
263.         0x08,0x0F,0x0F,0x08,0x00,0x00,0x00,0x00,
     
264. 
     - C/ W4 K+ L* C+ n
265.         0x40,0xE0,0xA0,0x20,0x20,0x60,0x40,0x00,  // -s-
     $ l5 M- K% Z6 m) q" }
266.         0x04,0x0C,0x09,0x09,0x0B,0x0E,0x04,0x00,
     & \  a; F% t, r6 y
267. 
     
268.         0x20,0x20,0xF8,0xFC,0x20,0x20,0x00,0x00,  // -t-
     
269.         0x00,0x00,0x07,0x0F,0x08,0x0C,0x04,0x00,
     
270. 
     
271.         0xE0,0xE0,0x00,0x00,0xE0,0xE0,0x00,0x00,  // -u-
     
272.         0x07,0x0F,0x08,0x08,0x07,0x0F,0x08,0x00,
     
273. 
     ) x6 b/ Q7 `: V$ ?
274.         0x00,0xE0,0xE0,0x00,0x00,0xE0,0xE0,0x00,  // -v-
     
275.         0x00,0x03,0x07,0x0C,0x0C,0x07,0x03,0x00,
     0 j9 ?% N/ b3 r. W
276. 
     , A* P9 {0 h- H
277.         0xE0,0xE0,0x00,0x00,0x00,0xE0,0xE0,0x00,  // -w-
     
278.         0x07,0x0F,0x0C,0x07,0x0C,0x0F,0x07,0x00,
     - Y( Y2 n" \$ {5 S& F
279. 
     : T6 _( Z2 ^' ~* w9 g  }, {
280.         0x20,0x60,0xC0,0x80,0xC0,0x60,0x20,0x00,  // -x-
     0 w0 X( |& x; H; L! O3 C3 `
281.         0x08,0x0C,0x07,0x03,0x07,0x0C,0x08,0x00,
     
282. 
     
283.         0xE0,0xE0,0x00,0x00,0x00,0xE0,0xE0,0x00,  // -y-
     
284.         0x47,0x4F,0x48,0x48,0x68,0x3F,0x1F,0x00,
     
285. 
     
286.         0x60,0x60,0x20,0xA0,0xE0,0x60,0x20,0x00,  // -z-
     
287.         0x0C,0x0E,0x0B,0x09,0x08,0x0C,0x0C,0x00,
     
288. 
     
289.         0x00,0x40,0x40,0xF8,0xBC,0x04,0x04,0x00,  // -{-
     + |: Z, g1 J6 ]
290.         0x00,0x00,0x00,0x07,0x0F,0x08,0x08,0x00,
     8 b% ~. Z7 S0 P# w2 a
291. 
     1 g1 i! l: Q: M( J; A+ J& W+ X
292.         0x00,0x00,0x00,0xBC,0xBC,0x00,0x00,0x00,  // -|-
     9 ?4 R& F* t4 H" g) N4 h" s
293.         0x00,0x00,0x00,0x0F,0x0F,0x00,0x00,0x00,
     
294. 
     
295.         0x00,0x04,0x04,0xBC,0xF8,0x40,0x40,0x00,  // -}-
     
296.         0x00,0x08,0x08,0x0F,0x07,0x00,0x00,0x00,
     
297. 
     1 h  z" Y6 ?" |* @, ?, Y+ w8 L
298.         0x08,0x0C,0x04,0x0C,0x08,0x0C,0x04,0x00,  // -~-
     
299.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
     ; \9 t- ?  ?6 d. }
300. 
       K& Y/ ]- [4 |  O: U+ {9 n$ w" D
301.         0x80,0xC0,0x60,0x30,0x60,0xC0,0x80,0x00,  // --
     
302.         0x07,0x07,0x04,0x04,0x04,0x07,0x07,0x00,
     % A% G: K0 K" `' |
303. };
     
304. 
       \" z6 e8 `, N: D8 r0 f9 C
305. #endif /* OLED_ASCII_H_ */

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& _( Q3 b" v& h$ x2 y5 W* Z7 d" {. b6 ]) R【2】将创建屏幕打印函数，输出显示字符串能力
        （1）首选了解ASCII_8x16字库表如何使用的，例如我们取"!"为例：

1. ！16个8bit的字段的二进制表示如下
   
2. 0X00     0 0 0 0 0 0 0 0
   & D0 Z, F* }9 Z* r& v
3. 0X00     0 0 0 0 0 0 0 0
   
4. 0X38     0 0 1 1 1 0 0 0
   ; e  S) @# _" E: L" y& B
5. 0XFC     1 1 1 1 1 1 0 0
   ; ]$ \# S- H/ e9 H0 S6 }
6. 0XFC     1 1 1 1 1 1 0 0
   9 M) y$ b% O) {/ t; P$ M
7. 0X38     0 0 1 1 1 0 0 0
   " H8 _  c! N; k% ]0 K
8. 0X00     0 0 0 0 0 0 0 0
   
9. 0X00     0 0 0 0 0 0 0 0
   5 G8 [3 K7 i, [5 x
10. 
    2 x- \/ N& |: k8 a  b! w
11. 0X00     0 0 0 0 0 0 0 0
    
12. 0X00     0 0 0 0 0 0 0 0
    " d, @+ L8 F& `$ `# T4 B) W
13. 0X00     0 0 0 0 0 0 0 0
    + N+ E, ^  e6 Q6 b; s8 Y
14. 0X0D     0 0 0 0 1 1 0 1
    
15. 0X0D     0 0 0 0 1 1 0 1
    : t' R+ G  p- J2 m! V( Z
16. 0X00     0 0 0 0 0 0 0 0
    
17. 0X00     0 0 0 0 0 0 0 0
    & p1 n$ M4 V  G; f0 E, x9 ^6 i/ {
18. 0X00     0 0 0 0 0 0 0 0

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        （2）将划分为前8*8和后8*8的的二进制矩阵，将8*8矩阵做逆时针（90度）翻转，将翻转后矩阵进行紧凑（去掉空格），这些“1”组成了一个大的“！”字符如下：
8 G2 m+ U0 h9 w! _, U  e+ w

1. //将8*8二进制矩阵翻转
   
2. 0X000X000X380XFC0XFC0X380X000X00
   0 S2 q. u* n. c. t+ s6 C  v' R% h
3. 0        0        0        0        0        0        0        0
   " B6 j- r2 F+ c6 H
4. 0        0        0        0        0        0        0        0
   % r8 `$ j+ d: `* o" \3 Q$ \
5. 0        0        0        1        1        0        0        0
   
6. 0        0        1        1        1        1        0        0
     _$ ]8 G3 q  P
7. 0        0        1        1        1        1        0        0
   # e" Z; Q7 k) D% u- v- i. R
8. 0        0        1        1        1        1        0        0
   
9. 0        0        0        1        1        0        0        0
   + P0 w" F  L& B* t) `2 W- L- }
10. 0        0        0        1        1        0        0        0
    * p1 ]- ]/ h. t) Y" r! e6 K
11. 0X000X000X000X0D0X0D0X000X000X00
    
12. 0        0        0        1        1        0        0        0
    
13. 0        0        0        0        0        0        0        0
    5 @* a  `. o0 J2 a1 ^  U1 k
14. 0        0        0        1        1        0        0        0
    * v- C/ M- Y2 l. {% s
15. 0        0        0        1        1        0        0        0
    $ J5 \" q5 w  `4 ^) B
16. 0        0        0        0        0        0        0        0
    9 ~, r- I8 }# ^3 h9 y" g4 |- m
17. 0        0        0        0        0        0        0        0
    
18. 0        0        0        0        0        0        0        0
    4 d8 l9 D! O. i# f+ W8 O# ?
19. 0        0        0        0        0        0        0        0
    $ I! N& c6 N4 ]0 F; v6 O& t
20. 
    
21. 将上述矩阵进行紧凑（去掉空格），这些“1”组成了一个大的“！”字符
    
22. 00000000
    
23. 00000000
    
24. 00011000
    ) T) ?2 B3 @. O2 I+ o9 R/ K
25. 00111100
    . ~+ ?5 V& L7 m
26. 00111100
    
27. 00111100
    
28. 00011000
    / a$ u' m4 y: _3 R) X0 l: {- K
29. 00011000
    
30. 00011000
    
31. 00000000
    
32. 00011000
    3 Z" l' m6 @$ g( \- D# l$ ?
33. 00011000
    
34. 00000000
    + \2 d5 V( P3 W; H
35. 00000000
    
36. 00000000
    - o  G2 L$ C$ Y. @/ L) d2 ?
37. 00000000
    
38. //显然，在代码实现中，每个字符就是8*16像素的二进制矩阵，我们将“1”的绘制前景色，“0”的绘制背景色，就能显示字符

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        （3）显然，在代码实现中，每个字符就是8*16像素的二进制矩阵，我们将“1”的绘制前景色，“0”的绘制背景色，就能显示字符
% X# X, x$ s3 N2 y% _, f5 t: g
        现在给出字符8*16二进制矩阵获取代码：

1. //addr为字符的地址信息
   * r6 k: u1 F4 f; g) l* z
2.         uint8_t buffer[16][8]={0};
   # ?# T3 f8 v) y% M8 S6 v+ ~
3.         for(uint8_t i=0; i<16; i++)
   2 h) M1 s5 F) m& Z% h1 s6 S2 L# }  I& @
4.         {
   / f8 p) D$ q% e6 A  b
5.                 uint16_t buf=ASCII_8x16[(addr*16)+i-512];
   
6.                 printf("0X%02X ",buf);
   
7.                 for(uint8_t j=0;j<8;j++){
   & Y1 B  n1 K3 V4 K* n: I: d
8.                         printf("%d ",(0x01&(buf>>j))>0?0x01:0x00);//注意这里低字节开始取值,与前面分析的就刚好反至了,但原理是一样的
   & a7 I% A0 l' L, e
9.                         buffer[8*(i/8)+j][i%8]=(0x01&(buf>>j))>0?1:0;
   
10.                 }
    
11.                 printf("\r\n");
    ) F, Q# s/ j7 w7 }
12.         }
    
13.         for(uint8_t i=0; i<16; i++)
    
14.         {
    * v5 N5 X9 y8 o
15.                 for(uint8_t j=0;j<8;j++){
    + B( d( ]5 M: P3 L/ M1 V
16.                         printf("%d",buffer[i][j]);
    
17.                 }
    
18.                 printf("\r\n");
    + Y2 n. Y; }. Y% X$ t( F5 \- l9 D# X
19.         }

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5 G. ~3 }: W. ~+ t* Y3 W        （4）测试“！”输出如下，妥妥的一个!，需要注意的是，下图第一部分的打印输出，由于我们打印时从低字节位开始取数，和前面分析（步骤（1）是从高位取数）的呈现出反至效果：

  M( Q, c/ F. @$ a

' B2 E' \% i' P) R( X2 _ 【3】字符串olde输出
        知道一个字符如何在屏幕输出，那么一个字符串输出就是逐个8*16的像素格子渲染输出，具体代码设置如下，OLED_printf实现在屏幕指定位置开始，打印输出字符串，字符串如果过大，将更换到下一行（即y方向下移16像素，屏幕左上角位置为0,0，向右为X轴方向递增，向下位Y轴方向递增），因此该函数会将输入的字符串进行切分成多行。OLED_DISPLAY_8x16函数用于在oled屏幕上输出一个字符的8*16像素绘制。OLED_printf_US测试通过调研OLED_DISPLAY_8x16实现一行字符的输出。

1. //显示英文与数字8*16的ASCII码
   
2. void OLED_DISPLAY_8x16(uint8_t x, uint8_t y, uint16_t w){ //要显示汉字的编号
   
3. //        printf("x=%d,y=%d,w=0X%04X w*16-512=%d\r\n",x,y,w,w*16-512);
   
4.         uint16_t color = 0;
   5 U5 l5 K, k. q
5.         uint16_t textData[16][8]={0};
   ; @. h3 M3 X; H" ?
6. //        uint8_t buffer[16][8]={0};
   " q0 ^( ]' i, Q
7.         for(uint8_t i=0; i<16; i++)
     C. F) d+ P. a
8.         {
   
9.                 uint16_t buf=ASCII_8x16[(w*16)+i-512];
   , F5 j+ R! G$ @4 G! H
10. //                printf("0X%02X ",buf);
    
11.                 for(uint8_t j=0;j<8;j++){
    
12. //                        printf("%d ",(0x01&(buf>>j))>0?0x01:0x00);
    . E; c+ ]$ b8 l) ~
13. //                        buffer[8*(i/8)+j][i%8]=(0x01&(buf>>j))>0?1:0;
    ! V/ m: R, i9 u, i
14.                         color = (0x01&(buf>>j))>0?LCD_DISP_BLACK:LCD_DISP_BLUE;
    - {  z& K2 V; y& ~
15.                         textData[8*(i/8)+j][i%8] = color;
    0 t" m, p% I& K
16. //                        OLED_WritePixel(x+i%8,y+8*(i/8)+j,color);//单像素渲染
    
17.                 }
    6 s& b8 b+ o+ ?" ]  m
18. //                printf("\r\n");
    0 P- U3 d& J# s% A
19.         }
    + s7 x2 F8 X' q8 l
20.         for(uint8_t i=0; i<16; i++)
    + C' ]7 X4 y/ d
21.         {
    
22.                 OLED_WriteLine(x,y+i,textData[i],8);//列像素渲染
    $ ~# ^3 l8 P" G5 z; Z
23. //                for(uint8_t j=0;j<8;j++){
    + j7 V/ u. T* ?2 n; s
24. //                        printf("%d",buffer[i][j]);
    
25. //                }
    ; \) d- X; m' O2 D5 k7 R" B" T
26. //                printf("\r\n");
    
27.         }
    $ ^" b( o% M  l( q  k+ J
28. }
    ' l3 u& y# T2 O* N
29. 
    5 R6 s- F" Y2 a0 E) T+ {, I
30. //用于OLED_printf函数专用的显示程序
    : t1 q8 h' h5 f; R; h
31. void OLED_printf_US(uint8_t xpos,uint8_t ypos,uint8_t *str,uint8_t i){
    
32.         uint8_t r=0;
    3 K6 p7 _2 D4 X
33.         while(i != r){//i是长度值，当显示到i之后退出
      ]3 v' A( x2 y8 A9 |3 s0 `
34.                 OLED_DISPLAY_8x16(xpos+r*8,ypos,*str++);//显示英文与数字8*16的ASCII码
    
35.                 r++;
    
36.     }
    
37. }
    : t# `7 h8 g; x5 m; G
38. //OLED专用的printf函数
    ) T1 n" Q' a) k# D: W; }# N
39. //调用方法：OLED_printf(0,0,"123");
    . J: @& }* ?. A* L
40. //注意若xpos或ypos过大，并内容较多时，会出现溢出边界
    & o5 i3 o3 s. Z2 z) E% I
41. #define line_size 29
    
42. #define row_size 16
    . _( [' I; i; [  A, Q
43. void OLED_printf (uint8_t xpos,uint8_t ypos,char *fmt, ...)
    
44. {
    + k: X$ Z$ A5 I$ |
45.     char buff[line_size];  //用于存放转换后的数据 [长度],限定30字符长度，每个字符8像素宽度，屏幕宽240
    $ b( j7 ^: \2 m) Y! ^, a' f+ ?
46.     uint16_t size=0;
    
47.     uint16_t row = 1+strlen(fmt)/line_size;//暂时没考虑自带换行符号情况
    ! I  n' B4 Q5 z1 m
48. //    printf("row=%d\r\n",row);
    . `; i) z6 @0 y
49.     for(uint16_t i=0;i<row;i++){
    
50.         va_list arg_ptr;
    , U7 E  x  ^5 I& E% a. Z, [% G
51.         va_start(arg_ptr,fmt);
    ( [( \' P1 D2 \( Y
52.         vsnprintf(buff, line_size,fmt+i*line_size,arg_ptr);//数据转换
    , N" B- E+ i3 \5 R0 B
53.         size=strlen(buff);                                        //得出数据长度
    
54.         if(strlen(buff)>line_size)size=line_size;                        //如果长度大于最大值，则长度等于最大值（多出部分忽略）
    ( V  s) w( I* [, g0 c
55.         OLED_printf_US(xpos,ypos+i*row_size,(uint8_t *)buff,size);//最终调用OLED专用的printf函数来显示
    * s, P- @5 B% C% O1 U
56.         va_end(arg_ptr);
    ) b6 R7 J% Z" p" g$ j+ z. I
57.     }
    
58. }

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/ ]( f: E& t) O. R8 C; c【4】SPI的直接输出和DMA输出区别实现
" M+ E$ z# f& v8 d" _: r  T4 b        设置两个清屏函数BSP_LCD_Clear和BSP_LCD_Clear_DMA，一个采用HAL_SPI_Transmit写入数据显示，前面所述都是这种方式（通过调用LcdWriteData、LcdWriteDataMultiple，这个函数采用HAL_SPI_Transmit实现的），一个调用HAL_SPI_Transmit_DMA写入数据显示。

        BSP_LCD_Clear实现就是调用LcdWriteDataMultiple绘制240行的线，BSP_LCD_Clear_DMA实现就是分为两个半屏绘制（HAL_SPI_Transmit_DMA的接收数据组大小类型是uint16_t，最大支持0xfff,65535）。

1. static void LCD_Address_Set(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2)
   
2. {
   
3.     /* 指定X方向操作区域 */
   7 \% m& ?/ {1 Y+ Q9 E
4.         LcdWriteReg(0x2a);
   : c' U( A# i# ^  N) v2 v
5.         LcdWriteData(x1 >> 8);
   
6.         LcdWriteData(x1);
   . c: ]3 ^* m* T0 H2 d) @9 F
7.         LcdWriteData(x2 >> 8);
   
8.         LcdWriteData(x2);
   
9. 
   5 v- z1 v! g4 d# W/ A! P3 C
10.     /* 指定Y方向操作区域 */
    
11.         LcdWriteReg(0x2b);
    
12.     LcdWriteData(y1 >> 8);
    # s2 X7 i9 A9 S
13.     LcdWriteData(y1);
    
14.     LcdWriteData(y2 >> 8);
    - x& b; X7 {, l+ B) U5 G6 h( ^
15.     LcdWriteData(y2);
    
16. 
    : a0 D2 X( |: S4 C# [
17.     /* 发送该命令，LCD开始等待接收显存数据 */
    5 L& }- q' O) m3 C3 B8 C5 C' x- l9 {
18.     LcdWriteReg(0x2C);
    4 `# J2 X, w* k' X& n1 L! G
19. }
    
20. //指定位置，绘制一行像素直到屏幕右侧
    * `8 Q8 t, B3 P/ H/ K
21. void OLED_SetCursor(uint16_t Xpos, uint16_t Ypos)
    
22. {
    ( f9 p# S$ v. @8 ]8 U
23.         LCD_Address_Set(Xpos,Ypos,WIDTH-1,Ypos);
    
24. }
    
25. 
    
26. void BSP_LCD_Clear(uint16_t Color)
    
27. {
    
28.         uint8_t black_gui[480] = {0};
    ( L4 q- F7 f3 }# Y) H
29.         memset(black_gui, Color, sizeof(black_gui));
    
30. 
    & O! ^6 @# v: K
31.         for (uint32_t counter = 0; counter < 240; counter++)
    9 ^1 b. p7 R3 M. P- d/ j
32.         {
    
33.                 /* Set Cursor */
    " k; v2 d6 G4 j3 N! _
34.                 OLED_SetCursor(0, counter);
    ' r' J" a% v) E2 o; J7 V3 x  w) f
35.                 /* Prepare to write to LCD RAM */
    8 W  g' x. n! E" d! C8 F; V
36.                 OLED_WriteReg(0x2C, (uint8_t*)NULL, 0);
    , U& t9 I2 J" y
37.                 /* RAM write data command */
    
38.                 LcdWriteDataMultiple(black_gui, 480);
    ! h' b* e; t& ^
39.         }
    # h6 q) p- g! G# K
40. }
    
41. 
    
42. extern volatile uint8_t one_frame_done;
    7 a9 Q( s# f$ U* x
43. void BSP_LCD_Clear_DMA(uint16_t Color)
    9 P  v! D" m/ J+ ]# {2 _
44. {
    
45.         uint8_t black_gui_DMA[WIDTH*HEIGHT*2] = {0X00};
      s! o' |2 |7 T7 W$ K# q% _
46.         for(uint32_t i=0; i<WIDTH*HEIGHT; i++)
    4 @# i' C- L8 K# N4 R
47.         {
    
48.                 black_gui_DMA[2*i]=Color>>8;
    
49.                 black_gui_DMA[2*i+1] = Color;
    
50.         }
    5 i! ?& `: A3 P/ t
51.         printf("0X%02x%02x\r\n",black_gui_DMA[0],black_gui_DMA[1]);
    7 g8 D0 O  D) M1 O
52.         //需要分两次写入HAL_SPI_Transmit_DMA写入缓存大小uint16_t(0xfff,65535)
    
53.         one_frame_done = 0;
    9 ~, N& Q8 I) k  X# A  j& A+ w
54.     /* 指定显存操作地址为全屏*/
    
55.     LCD_Address_Set(0, 0, WIDTH - 1, HEIGHT/2 - 1);
    
56.     Data_Cmd_State(1);/* 指定接下来的数据为数据 */
    
57.     /*DMA 写前半屏*/
    ; u# z# [4 n  Z8 X7 C
58.     HAL_SPI_Transmit_DMA(&hspi1,black_gui_DMA, WIDTH*HEIGHT);
    $ Z1 O( M# J4 i+ J0 U; P
59.     while(!one_frame_done){/*release cpu and doing something else*/}
    
60.         one_frame_done = 0;
    ) O& K8 W, h9 ~+ `
61.     /* 指定显存操作地址为全屏*/
    3 z. j* T1 T2 Z* P! [1 P- V
62.     LCD_Address_Set(0, HEIGHT/2, WIDTH - 1, HEIGHT - 1);
    & g( O  n1 J8 s" u+ B
63.     Data_Cmd_State(1);/* 指定接下来的数据为数据 */
    4 y4 }0 _4 ?2 p+ y6 p% B/ Z" k( n
64.     /*DMA 写后半屏*/
    
65.     HAL_SPI_Transmit_DMA(&hspi1,black_gui_DMA+WIDTH*HEIGHT, WIDTH*HEIGHT);
    
66.     while(!one_frame_done){/*release cpu and doing something else*/}
    $ C$ p1 L. A- d  \# Q+ K2 g
67. }

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        前文3.3小节，已经开启了SPI的外部中断功能，则SPI的回调函数会被调用。one_frame_done是一个全局变量，在spi.c中定义，需要在spi.c加上HAL_SPI_TxCpltCallback的函数，用来替换stm32l4xx_hal_spi.c文件的spi中断回调实现：
4 ]; ~" l0 k; b7 {. v

1. //spi.c末加上spi的中断回调实现
   5 n9 v: |4 m  F5 m, b2 z
2. /* USER CODE BEGIN 1 */
   # K7 G/ z& ?/ A
3. volatile uint8_t one_frame_done;
   3 m4 j/ k/ w  i' f& r* m
4. void HAL_SPI_TxCpltCallback(SPI_HandleTypeDef *hspi)
   
5. {
   1 B0 d4 G7 o) F3 W; _5 }* f: l' `
6.         one_frame_done = 1;
   
7. }
   
8. /* USER CODE END 1 */
   : O6 {' q; P4 q( }, w; a- c
9. 
   ! `$ O7 l6 S  a
10. //用来替换调stm32l4xx_hal_spi.c的弱函数
    / p* L% K9 R+ A3 S" E$ C9 n0 L
11. __weak void HAL_SPI_TxCpltCallback(SPI_HandleTypeDef *hspi)
    
12. {
    
13.   /* Prevent unused argument(s) compilation warning */
    
14.   UNUSED(hspi);
    3 c# v, G+ k7 ~7 l( m) d
15. 
      x7 A, D1 M5 k) X/ q4 L( `
16.   /* NOTE : This function should not be modified, when the callback is needed,
    7 ^0 j* q0 w, a# i
17.             the HAL_SPI_TxCpltCallback should be implemented in the user file
    
18.    */
    0 \- b. s+ Z' L" I" g( A; s) M
19. }

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' _. ?( s6 N2 M/ ], C" c六、程序编译及测试
# k# s* U( w( F. B  z+ O" Z0 l, f- V        在main.c中加入按键功能，一个按键直接写入方式清屏（黑屏），一个按键DMA写入方式清屏（蓝屏幕），一个按键实现屏幕输出一段文字，另外通过串口发送字符串，实现在屏幕输出显示。
' q/ a9 l5 L& }/ _. o8 e

1. /* USER CODE BEGIN WHILE */
   
2.   while (1)
   7 M4 Y: u+ k8 p9 h% L% G* O; S/ G
3.   {
   $ C1 c" o( w# O# a) ?
4.           if(HLPUSART_RX_STA&0xC000){//溢出或换行，重新开始
   
5.                   OLED_printf(10,10,"%.*s",HLPUSART_RX_STA&0X0FFF, HLPUSART_RX_BUF);
   
6.                   HLPUSART_RX_STA=0;//接收错误,重新开始
   
7.                   HAL_Delay(100);//等待
   4 d9 _3 D4 F4 U1 i
8.           }
   
9.           if(KEY_0())
   , k; O6 m/ i9 h( ^* I" l0 ^% m+ h8 H6 k
10.           {
    # i( P; L# O- B5 ^9 d( [
11.                   OLED_printf(10,10,"hello world to stm32!I am an embedded enthusiast.");
    / {; M0 y, \- c
12.                   OLED_printf(10,48,"  STM32CubeIDE is an advanced C/C++ development platform "
    7 z: O; m( ?3 }# k, {
13.                                   "with peripheral configuration, code generation, code compilation, "
    0 S2 M8 h3 ~3 p' c
14.                                   "and debug features for STM32 micro controllers and microprocessors.");
    8 J8 X/ D$ s4 ^' G
15. //                  OLED_printf(10,10,"!");
    
16.           }
    
17.           if(KEY_1())
    - v- a+ C- P8 K0 i" P0 g( G
18.           {
    
19.                   BSP_LCD_Clear(0xF800);
    % g* H4 j; |1 `8 I7 Y  U
20.                   printf("OLED_Clear\r\n");
    
21.           }
    & c0 w. {- [( M: Z( O5 q
22.           if(KEY_2())
    & d- s. l- p# u: I2 e$ n
23.           {
    ) e4 C- d$ \: b, ]6 E0 E
24.                   BSP_LCD_Clear_DMA(LCD_DISP_BLUE);
    ( C1 [7 p* j1 Z6 |. Y1 ?# C9 S
25.                   printf("OLED_Clear_DMA\r\n");
    
26.           }
    % r7 w6 x6 c. ^# z. B9 m
27.         Toggle_led0();
    
28.     /* USER CODE END WHILE */

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        编译完成后测试效果如下：
; l8 m. K+ \8 n7 w) H! V
* A0 K, R3 h! }/ }7 B, G3 y. Z        1）按键key1清屏，发送字符串

+ x: t  h0 Q. t9 g


! C) Z* m& Z7 d7 a2 r& l8 o

        2）按键key0，输出一段文字

9 Z- k" S5 |  ?6 b7 \; T
! ^# e6 \+ a, J6 v/ {: P& Q

! M1 M6 P! }7 ]0 ]) l 七、附件
6 n7 ]; A# h: q        oled.h
/ U% @3 b- J0 H. V* x# f

1. #ifndef _OLED_H_
   
2. #define _OLED_H_
   
3. /*
   / p4 z0 s) h& ^4 `* H
4. * for st7789 oled 模组
   9 O) n, U5 k' h( f) }1 E
5. */
   
6. #define WIDTH                240
   6 Z0 F' `7 ^# S' Z. I
7. #define HEIGHT                240
   7 E6 t8 ^6 g/ P
8. #define BPP                16
   , f# p, H" m6 ~( R
9. 
   
10. /* Init script function */
    " r% \1 a6 h' o$ o, e
11. struct OLED_function {
    
12.   uint8_t cmd;
    
13.   uint16_t data;
    
14. };
    - H& p% Z+ C( P$ P2 a; Q# j6 X( [5 a
15. 
    
16. /* Init script commands */
    
17. enum OLED_cmd {
    9 O3 G% W# Z: y+ C) M6 u
18.   OLED_START,
    
19.   OLED_END,
    
20.   OLED_CMD,
    0 h; ^; K4 Z+ W/ K3 Y" X  l
21.   OLED_DATA,
    : o$ a1 T9 g3 _2 c4 _9 C
22.   OLED_DELAY
    ' A( w8 |: L6 E; g- C
23. };
    * I4 r/ T8 v$ _7 r8 N5 i3 E
24. 
    
25. /************** 颜色(RGB 5,6,5) **************/
    ( S& Z- Z8 O- P
26. #define LCD_DISP_RED                    0xF800       //先高字节，后低字节
    " G( i0 B0 r- s8 Y. m4 r& g6 h
27. #define LCD_DISP_GREEN                  0x07E0
    ) K' [9 S. Z  z: k
28. #define LCD_DISP_BLUE                   0x001F
    - \9 A9 O! O- Q$ u
29. #define LCD_DISP_WRITE                  0xFFFF
    
30. #define LCD_DISP_BLACK                  0x0000
    9 ^3 I8 C: t. a8 f$ h$ e; u/ c# G! A
31. #define LCD_DISP_GRAY                   0xEF5D
    
32. #define LCD_DISP_GRAY75                 0x39E7
    % A9 Y& M" D) v7 M- K
33. #define LCD_DISP_GRAY50                 0x7BEF
    8 c4 E5 w& ]! d3 J; u% [
34. #define LCD_DISP_GRAY25                 0xADB5
    
35. 
    
36. /* oled Commands */
    7 Y! R7 }5 R% ]& z4 y% _# k4 a# K
37. #define OLED_CASET        0x2A
    
38. #define OLED_RASET        0x2B
    
39. #define OLED_RAMWR        0x2C
    % u/ W7 S, p6 j! b0 A1 S( {
40. #define OLED_RAMRD        0x2E
    
41. 
    
42. //对该位写1或0
    
43. #define Data_Cmd_State(__D_C_State__)        HAL_GPIO_WritePin(LCD_DCX_GPIO_Port, LCD_DCX_Pin, (GPIO_PinState)(__D_C_State__))
    & a0 a9 d1 i5 W& |2 C
44. #define OLED_RST_State(__RST_State__)        HAL_GPIO_WritePin(LCD_RST_GPIO_Port, LCD_RST_Pin, (GPIO_PinState)(__RST_State__))
    / P4 E: F' |, k: T1 {
45. #define LCD_PWR_State(__PWR_State__)        HAL_GPIO_WritePin(LCD_PWR_GPIO_Port, LCD_PWR_Pin, (GPIO_PinState)(__PWR_State__))
    
46. 
    
47. int OLED_init();
    2 Y, l) ^4 ^! s
48. void LcdWriteReg(uint8_t Data);
    ; K0 O( G+ R* m/ W' J3 a
49. void LcdWriteData(uint8_t Data);
    - R5 H  t6 ?  o1 U
50. void LcdWriteDataMultiple(uint8_t * pData, uint32_t NumItems);
    
51. 
    
52. void OLED_WritePixel(uint16_t Xpos, uint16_t Ypos, uint16_t RGBCode);
    
53. void OLED_WriteLine(uint16_t Xpos, uint16_t Ypos, uint16_t *RGBCode, uint16_t pointNum);
    
54. 
    7 b9 g3 n; _6 s3 B
55. void BSP_LCD_Clear(uint16_t Color);
    
56. void BSP_LCD_Clear_DMA(uint16_t Color);
    
57. void OLED_printf (uint8_t xpos,uint8_t ypos,char *fmt, ...);
    
58. 
    
59. #endif /* __oled_H */

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oled.c
: j" G9 J3 b! `7 j/ u

1. #include "stm32l4xx_hal.h"
   9 P' @# s) T' A- y  e& j1 Z
2. #include <stdio.h>
   
3. #include <stdlib.h>
   
4. #include <string.h>
   
5. #include <stdarg.h>
   1 W8 A6 e* i) j6 N
6. #include "main.h"
   
7. #include "ASCII.h"
   
8. #include "oled.h"
   
9. 
   . ~* D  K: P" `/ N% b6 V2 i, L
10. extern SPI_HandleTypeDef hspi1;
    8 c$ [, d& K/ f2 b1 m% p
11. //初始化命令集
    4 R+ R5 F3 M* n; Y3 j
12. static struct OLED_function OLED_cfg_script[] = {
    
13.   {OLED_START, OLED_START},
    
14.   {OLED_CMD, 0x11},
    6 o  D' I4 `; s
15.   {OLED_DELAY, 120},
    
16.   {OLED_CMD, 0x36},
    
17.   {OLED_DATA, 0x00},
    + U/ }) x6 x6 M. w# y" s
18.   {OLED_CMD, 0x3a},
    
19.   {OLED_DATA, 0x65},
    
20.   {OLED_CMD, 0xb2},
    
21.   {OLED_DATA, 0x0c},
    : O# K/ t0 j1 V8 W4 `
22.   {OLED_DATA, 0x0c},
    5 X8 F, I4 Y0 m6 C
23.   {OLED_DATA, 0x00},
    9 h; E/ z! r( w* Z
24.   {OLED_DATA, 0x33},
    : t3 Q0 v1 Y: B+ |9 [/ m
25.   {OLED_DATA, 0x33},
    / ]# c. [* y2 [* i! X
26.   {OLED_CMD, 0xb7},
    7 |$ O# r9 K# O9 ~
27.   {OLED_DATA, 0x72},
    
28.   {OLED_CMD, 0xbb},
    - g# z9 V9 X0 O
29.   {OLED_DATA, 0x3d},
    
30.   {OLED_CMD, 0xc0},
    5 W1 a, U- L+ Q1 ^
31.   {OLED_DATA, 0x2c},
    + B, X3 j% j4 i$ P) Y$ f5 V# a, v
32.   {OLED_CMD, 0xc2},
    ; S, h( M! a; o+ m( n
33.   {OLED_DATA, 0x01},
    
34.   {OLED_CMD, 0xc3},
    ; g( Q6 P. G" x$ N1 z
35.   {OLED_DATA, 0x19},
    0 r% o4 n( O& b
36.   {OLED_CMD, 0xc4},
    
37.   {OLED_DATA, 0x20},
    
38.   {OLED_CMD, 0xc6},
    
39.   {OLED_DATA, 0x0f},
    - E) j8 L& o# M* M& I
40.   {OLED_CMD, 0xd0},
    0 G5 Y/ |( j  z
41.   {OLED_DATA, 0xa4},
    
42.   {OLED_DATA, 0xa1},
    , ?, @! d* J. i
43.   {OLED_CMD, 0xe0},
    - \& j; r/ y8 R8 x- }- R
44.   {OLED_DATA, 0x70},
    
45.   {OLED_DATA, 0x04},
    ( _% j6 z7 y# F2 d
46.   {OLED_DATA, 0x08},
    8 P% l. g$ n; Z% a9 A1 M8 v4 n
47.   {OLED_DATA, 0x09},
    
48.   {OLED_DATA, 0x09},
    9 l% [$ ^, Z) m
49.   {OLED_DATA, 0x05},
    1 K8 X: Y% ~, d5 D/ b8 o* O  S
50.   {OLED_DATA, 0x2a},
    
51.   {OLED_DATA, 0x33},
    7 X1 T3 Q/ L' `
52.   {OLED_DATA, 0x41},
    
53.   {OLED_DATA, 0x07},
    # k( I" l; {3 Z' V. S
54.   {OLED_DATA, 0x13},
    ( T8 o! \) y# p: s1 d. L$ s
55.   {OLED_DATA, 0x13},
    4 A7 _' f7 W% G2 v% y2 }
56.   {OLED_DATA, 0x29},
    
57.   {OLED_DATA, 0x2f},
    1 m8 E, X4 z8 Y2 p, V: i% }0 P
58.   {OLED_CMD, 0xe1},
    7 c# t# d4 Q& {
59.   {OLED_DATA, 0x70},
    
60.   {OLED_DATA, 0x03},
    
61.   {OLED_DATA, 0x09},
    
62.   {OLED_DATA, 0x0a},
    % P0 F% E7 b9 M7 s: r  P. e% x0 U
63.   {OLED_DATA, 0x09},
    ! }0 y1 U7 w) C7 h% O) F+ H
64.   {OLED_DATA, 0x06},
    
65.   {OLED_DATA, 0x2b},
    2 V- J4 O+ C2 D; ^5 d
66.   {OLED_DATA, 0x34},
    & W; ^- \' A; W' h/ r9 q8 f: Q1 m8 y
67.   {OLED_DATA, 0x41},
    " Y! D( [1 @* k* k/ n4 S. I
68.   {OLED_DATA, 0x07},
    
69.   {OLED_DATA, 0x12},
    
70.   {OLED_DATA, 0x14},
    ! [2 Y6 c, o8 I& h% o& H
71.   {OLED_DATA, 0x28},
    
72.   {OLED_DATA, 0x2e},
    
73.   {OLED_CMD, 0x21},
    
74.   {OLED_CMD, 0x29},
    
75.   {OLED_CMD, 0x2a},
    ( v% }1 B% A! `6 k  D
76.   {OLED_DATA, 0x00},
    
77.   {OLED_DATA, 0x00},
    % L! f5 S; f! L" U6 U- E
78.   {OLED_DATA, 0x00},
    " M/ u& b7 K2 G( G6 S+ T: j+ i
79.   {OLED_DATA, 0xef},
    3 G: ~1 O0 w8 S& {& F
80.   {OLED_CMD, 0x2b},
    9 {' {2 g( W1 j0 N
81.   {OLED_DATA, 0x00},
    
82.   {OLED_DATA, 0x00},
    
83.   {OLED_DATA, 0x00},
    
84.   {OLED_DATA, 0xef},
    % _- G. n( D# |
85.   {OLED_CMD, 0x2c},
    + E4 q& v4 K+ b
86.   {OLED_END, OLED_END},
    
87. };
    
88. 
    3 V- C4 V# x' \/ u$ k( D  P' v% u
89. static void OLED_run_cfg_script()
    7 g6 a+ V& c' E% e( v
90. {
    % N" x# w9 d# g  ?+ ?
91.           uint8_t data[2] = {0};
    
92.           int i = 0;
    1 Q6 p* k+ I( ~( j( R
93.           int end_script = 0;
    ! P7 _* a  @8 e, O" ^& {6 ^
94. 
    + k3 d3 a8 T8 A  T2 ?9 R
95.           do {
    ) m: \* D" `( s5 `
96.             switch (OLED_cfg_script[i].cmd) {
    4 o# W7 R3 Q/ G2 `7 k, }  c
97.             case OLED_START:
    " c' T2 v" c* v; H/ U
98.               break;
    
99.             case OLED_CMD:
    . O! j4 B% P3 C) ^6 H( z
100.               data[0] = OLED_cfg_script[i].data & 0xff;
     * Q' g: f7 }3 L; k2 [7 i
101.               LcdWriteReg(data[0]);
     
102.               break;
     8 u6 J! s! b& [- [& W: Y. f. ?& c
103.             case OLED_DATA:
     
104.               data[0] = OLED_cfg_script[i].data & 0xff;
     % L; K: E; f% e* t# K
105.               LcdWriteData(data[0]);
     
106.               break;
     $ q( X. S  X( b3 w7 [5 ^+ `4 Y
107.             case OLED_DELAY:
     6 X5 U( R3 q9 h$ M. T# ~5 a' X+ f. Y: Q
108.               HAL_Delay(OLED_cfg_script[i].data);
     
109.               break;
     7 }2 R3 Z3 j* c+ X( h. x& @
110.             case OLED_END:
     
111.               end_script = 1;
     ( R. ~' m$ o# ^# Z5 U) p3 _
112.             }
     
113.             i++;
     
114.           } while (!end_script);
     
115. }
     2 |# M6 F) P; M3 D& U
116. 
     6 l" C4 h; N( O0 p) F" a  E( Z
117. static void OLED_reset()
     ( {  X4 n5 g& C
118. {
     
119.           OLED_RST_State(0);
     # x2 k+ K: [; |2 b; c$ g0 q( B( G" j
120.           HAL_Delay(200);
     
121.           OLED_RST_State(1);
     / v- @1 r' P) u8 g  ]
122.           HAL_Delay(150);
     
123. }
     
124. 
     
125. #define LCD_MAX_MEM16_BLOCK             (1 << 6)
     
126. #define LCD_PIXEL_PER_BLOCK             (LCD_MAX_MEM16_BLOCK >> 1)
     $ f. {0 [9 a% \8 I
127. 
     
128. static void spec_send_fb(uint16_t color, uint16_t pixel_num)
     - G6 I0 }, J* S# r1 D$ _+ R6 ]/ l
129. {
     * \8 g" r- E/ p0 j0 g% H
130.           uint16_t real_mem[LCD_MAX_MEM16_BLOCK] = {0};
     
131. 
     
132.           for (uint16_t i = 0; i < LCD_MAX_MEM16_BLOCK; ++i) {
     ; A  q6 V1 Y( u
133.                   real_mem[i] = color;
     
134.           }
     
135. //          HAL_GPIO_WritePin(LCD_DCX_GPIO_Port, LCD_DCX_Pin, GPIO_PIN_SET);
       n" O- U5 l+ y' F1 X8 v* x
136.           Data_Cmd_State(GPIO_PIN_SET);
     
137.           if (pixel_num <= LCD_MAX_MEM16_BLOCK) {
     6 N  q* ]" G8 n. i% r. k
138.                   LcdWriteDataMultiple((uint8_t*)real_mem, pixel_num << 1);
     
139.           } else {
     
140.                   uint16_t count = pixel_num / LCD_MAX_MEM16_BLOCK;
     
141.                   uint16_t remain = pixel_num % LCD_MAX_MEM16_BLOCK;
     ( C) ^& W. o: K6 w/ p! x
142.                   for (uint16_t i = 0; i < count; ++i) {
     
143.                           LcdWriteDataMultiple((uint8_t*)real_mem, LCD_MAX_MEM16_BLOCK << 1);
     
144.                   }
     0 }2 {- p3 H& e' b4 e
145.                   LcdWriteDataMultiple((uint8_t*)real_mem, remain << 1);
     6 `1 N- q9 I- q3 h9 k+ B
146.           }
     0 t) A3 w; @6 X3 e) W$ M
147. }
     1 ]' ?& p: G, E% l8 G0 C. Q
148. 
     
149. static void OLED_display_picture(void)
     1 k3 w7 a) S' Y5 ?' I2 T
150. {
     3 f; y& ^5 ~0 q7 r3 g) p
151.   LcdWriteReg(OLED_RAMWR);
     6 w( N, W! B, W- t6 S0 p
152.   spec_send_fb(0x0, WIDTH * HEIGHT / 4);
     
153.   spec_send_fb(0x1111, WIDTH * HEIGHT / 4);
     % L; b1 U  r7 O
154.   spec_send_fb(0x7777, WIDTH * HEIGHT / 4);
     
155.   spec_send_fb(0xeeee, WIDTH * HEIGHT / 4);
     % @6 l) `4 \3 J6 E' v3 \! P
156. }
     
157. 
     
158. 
     
159. int OLED_init()
     - O6 L( |7 B5 I3 J
160. {
     . P0 m! l: _$ X9 _8 V
161.           LCD_PWR_State(0);//回显关闭
     
162.           OLED_reset();
     
163.           OLED_run_cfg_script();
     3 m: q, E# E# R; K3 y9 I# v
164.           LCD_PWR_State(1);//回显开启
     , z7 C3 b: t/ T% t; g
165.           OLED_display_picture();
     
166. 
     + I2 Y+ T8 ^8 H9 @
167.           return HAL_OK;
     - a# k% p2 s% T: H% X# @3 z
168. }
     
169. 
     . G5 K* q7 a- f) j" s3 z
170. void OLED_WriteReg(uint8_t Command, uint8_t *Parameters, uint8_t NbParameters)
     ) S- c% m; R2 y0 v4 A( \
171. {
     2 s7 A# R+ t" _4 u9 e
172.           /* Send command */
     
173.           LcdWriteReg(Command);
     
174. 
     & A5 f1 A7 b5 s: G
175.           /* Send command's parameters if any */
     7 E( N' }, b5 k) _5 ^7 L5 x% h
176.           for (uint8_t i=0; i<NbParameters; i++)
     
177.           {
     
178.             LcdWriteData(Parameters[i]);
     
179.           }
     ; p3 r' f  x6 p9 E2 k' |1 `0 ]
180. }
     # y8 F% |9 y4 D# R
181. 
     6 k! A; ^2 \3 x$ K
182. static void LCD_Address_Set(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2)
     ) B0 ~' T0 q) w/ S# s
183. {
     ) t4 w$ j6 F  w7 b( W4 P2 p
184.     /* 指定X方向操作区域 */
     ' d+ u4 q7 v7 B* x6 n: B
185.         LcdWriteReg(0x2a);
     
186.         LcdWriteData(x1 >> 8);
     ; z4 c! i" k2 Y; v
187.         LcdWriteData(x1);
     # }- N( D- M$ w$ a: o% M: Z
188.         LcdWriteData(x2 >> 8);
       s7 }$ ]" d# t* \2 F& N. b
189.         LcdWriteData(x2);
     
190. 
     
191.     /* 指定Y方向操作区域 */
     
192.         LcdWriteReg(0x2b);
     
193.     LcdWriteData(y1 >> 8);
     
194.     LcdWriteData(y1);
     8 m* ?4 H  F/ m/ N/ S' \3 G; H  t
195.     LcdWriteData(y2 >> 8);
     3 |- u: r& ]  ?6 N* R- M
196.     LcdWriteData(y2);
     + Y, m) [% K; r2 h8 p) H5 S! A% w
197. 
     
198.     /* 发送该命令，LCD开始等待接收显存数据 */
     # s/ P8 p* c4 G" H) g% h
199.     LcdWriteReg(0x2C);
     + b7 [3 @$ b9 |
200. }
     
201. 
     
202. void OLED_SetCursor(uint16_t Xpos, uint16_t Ypos)
     
203. {
     7 b8 n7 C" t5 l0 v
204.         LCD_Address_Set(Xpos,Ypos,WIDTH-1,Ypos);
     7 }, Z- |7 P) A  v+ x# S( X
205. }
     
206. 
     5 Y0 ]/ {: ]* C& C
207. void BSP_LCD_Clear(uint16_t Color)
       T. f; H0 E5 y# b
208. {
     / p: J4 o/ z8 [- C0 c  M6 X% ]) N
209.         uint8_t black_gui[480] = {0};
     : G- j5 Q0 m, ~, {
210.         memset(black_gui, Color, sizeof(black_gui));
     . K0 }1 I1 S* I
211. 
     " |+ @# e1 h% [; _+ t  [
212.         for (uint32_t counter = 0; counter < 240; counter++)
     ( h: ~, V4 E: R$ J6 t
213.         {
     
214.                 /* Set Cursor */
     
215.                 OLED_SetCursor(0, counter);
     
216.                 /* Prepare to write to LCD RAM */
     
217.                 OLED_WriteReg(0x2C, (uint8_t*)NULL, 0);
     ' y4 W% ]4 y, ^  h
218.                 /* RAM write data command */
     
219.                 LcdWriteDataMultiple(black_gui, 480);
     # p9 i& ^- r5 R
220.         }
     
221. }
     
222. 
     8 v6 x8 p3 m' R' a) `
223. extern volatile uint8_t one_frame_done;
     : F6 f; q: J. A- C. f% y" W4 \
224. void BSP_LCD_Clear_DMA(uint16_t Color)
     
225. {
     
226.         uint8_t black_gui_DMA[WIDTH*HEIGHT*2] = {0X00};
     
227.         for(uint32_t i=0; i<WIDTH*HEIGHT; i++)
     
228.         {
     " C9 @6 u/ M/ Y1 Z$ v2 D
229.                 black_gui_DMA[2*i]=Color>>8;
     
230.                 black_gui_DMA[2*i+1] = Color;
     
231.         }
     
232.         printf("0X%02x%02x\r\n",black_gui_DMA[0],black_gui_DMA[1]);
     
233.         //需要分两次写入HAL_SPI_Transmit_DMA写入缓存大小uint16_t(0xfff,65535)
     % c; v  s  u' y) ]! y0 ]  t
234.         one_frame_done = 0;
     
235.     /* 指定显存操作地址为全屏*/
     ) `6 _  k9 e' N4 J# j! N
236.     LCD_Address_Set(0, 0, WIDTH - 1, HEIGHT/2 - 1);
     
237.     Data_Cmd_State(1);/* 指定接下来的数据为数据 */
     , \- }. U6 {4 k- z
238.     /*DMA 写前半屏*/
     
239.     HAL_SPI_Transmit_DMA(&hspi1,black_gui_DMA, WIDTH*HEIGHT);
     * T. |# _3 {4 q0 ]! p& N
240.     while(!one_frame_done){/*release cpu and doing something else*/}
     / X7 G, \3 S4 h+ ]& X; K
241.         one_frame_done = 0;
     ' z" H9 N  x1 a" E2 U
242.     /* 指定显存操作地址为全屏*/
     * C4 `% b8 M' V  H
243.     LCD_Address_Set(0, HEIGHT/2, WIDTH - 1, HEIGHT - 1);
     * S1 t5 b8 M. }" f/ M. L
244.     Data_Cmd_State(1);/* 指定接下来的数据为数据 */
     
245.     /*DMA 写后半屏*/
     - W: v9 P7 N' b% ^" @
246.     HAL_SPI_Transmit_DMA(&hspi1,black_gui_DMA+WIDTH*HEIGHT, WIDTH*HEIGHT);
     
247.     while(!one_frame_done){/*release cpu and doing something else*/}
     5 u" X4 y1 W! z$ b7 `: i% ^
248. }
     , p. f& P( r" D* T5 P, Z! z3 ?
249. 
     ( l0 o) Y5 ?$ M, V8 I. G. c9 u8 d9 r" M
250. //显示英文与数字8*16的ASCII码
     / A4 D: g5 X  E# p9 g; S( c
251. void OLED_DISPLAY_8x16(uint8_t x, uint8_t y, uint16_t w){ //要显示汉字的编号
     
252. //        printf("x=%d,y=%d,w=0X%04X w*16-512=%d\r\n",x,y,w,w*16-512);
     5 _  z, N5 E0 \
253.         uint16_t color = 0;
     " n# Z/ ]# u# _/ q; i$ R1 o
254.         uint16_t textData[16][8]={0};
     
255. //        uint8_t buffer[16][8]={0};
     
256.         for(uint8_t i=0; i<16; i++)
     
257.         {
     
258.                 uint16_t buf=ASCII_8x16[(w*16)+i-512];
     
259. //                printf("0X%02X ",buf);
     - h4 c* B3 I- E- t) e1 [( I
260.                 for(uint8_t j=0;j<8;j++){
     
261. //                        printf("%d ",(0x01&(buf>>j))>0?0x01:0x00);
     8 M, r! u8 L  b) _: C' K) q
262. //                        buffer[8*(i/8)+j][i%8]=(0x01&(buf>>j))>0?1:0;
     
263.                         color = (0x01&(buf>>j))>0?LCD_DISP_BLACK:LCD_DISP_BLUE;
     . @1 _* b7 E2 v& P4 ^
264.                         textData[8*(i/8)+j][i%8] = color;
     
265. //                        OLED_WritePixel(x+i%8,y+8*(i/8)+j,color);//单像素渲染
     , r+ r0 N2 J8 O- y1 f+ ^- N
266.                 }
     9 ]' ^0 l- u: Y: ^, _
267. //                printf("\r\n");
     
268.         }
     9 b/ d7 Q+ A+ W# U5 S
269.         for(uint8_t i=0; i<16; i++)
     
270.         {
     , _% p% ~4 o) `( s+ j
271.                 OLED_WriteLine(x,y+i,textData[i],8);//列像素渲染
     $ k/ o! }# L! J
272. //                for(uint8_t j=0;j<8;j++){
     ' E, H! w9 N+ Y4 v5 B$ T
273. //                        printf("%d",buffer[i][j]);
     3 r- H2 {) }/ ^9 a5 Y* y2 `
274. //                }
     
275. //                printf("\r\n");
     6 a0 `  D" d' |- p6 {  O  M! a
276.         }
     
277. }
     
278. 
     ' C1 j/ m, `  U; K0 ]) I1 R
279. //用于OLED_printf函数专用的显示程序
     
280. void OLED_printf_US(uint8_t xpos,uint8_t ypos,uint8_t *str,uint8_t i){
     ( `3 n' m8 n/ P
281.         uint8_t r=0;
     
282.         while(i != r){//i是长度值，当显示到i之后退出
     ; V  R1 A, Y5 c& x$ a5 L8 M
283.                 OLED_DISPLAY_8x16(xpos+r*8,ypos,*str++);//显示英文与数字8*16的ASCII码
     
284.                 r++;
     7 M5 Y1 A! n- ?
285.     }
     
286. }
     
287. //OLED专用的printf函数
     
288. //调用方法：OLED_printf(0,0,"123");
     3 a/ k$ e. H/ v
289. //注意若xpos或ypos过大，并内容较多时，会出现溢出边界
     7 m: e, I9 M8 ^
290. #define line_size 29
     
291. #define row_size 16
     
292. void OLED_printf (uint8_t xpos,uint8_t ypos,char *fmt, ...)
     3 ~- L7 C5 ~8 ~& W
293. {
     
294.     char buff[line_size];  //用于存放转换后的数据 [长度],限定30字符长度，每个字符8像素宽度，屏幕宽240
     : B8 Q& r+ B' V
295.     uint16_t size=0;
     5 G, ]4 X: u' l" r
296.     uint16_t row = 1+strlen(fmt)/line_size;//暂时没考虑自带换行符号情况
     0 P! l) U9 K3 ~
297. //    printf("row=%d\r\n",row);
     + b$ f' T/ g6 e$ F& |; p; S) c
298.     for(uint16_t i=0;i<row;i++){
     
299.         va_list arg_ptr;
     5 W; `. M$ p& S0 H; J) a- m
300.         va_start(arg_ptr,fmt);
     
301.         vsnprintf(buff, line_size,fmt+i*line_size,arg_ptr);//数据转换
     
302.         size=strlen(buff);                                        //得出数据长度
     . O6 n% p; C( H5 s7 G6 Y
303.         if(strlen(buff)>line_size)size=line_size;                        //如果长度大于最大值，则长度等于最大值（多出部分忽略）
     
304.         OLED_printf_US(xpos,ypos+i*row_size,(uint8_t *)buff,size);//最终调用OLED专用的printf函数来显示
     # ~9 `5 Y. I; t4 l) a6 N1 r1 J# f
305.         va_end(arg_ptr);
     ) }- S9 ?$ {( Z; m3 r
306.     }
     
307. }
     
308. 
     
309. void OLED_WritePixel(uint16_t Xpos, uint16_t Ypos, uint16_t data)
     9 c% J+ z$ @1 g$ W$ g$ p* y) p" n
310. {
     
311.           uint8_t dataB = 0;
     ! t0 z- J! e3 r& R1 D4 D
312. 
     + |4 [0 W6 U# c( A/ _; ?
313.           /* Set Cursor */
     
314.           OLED_SetCursor(Xpos, Ypos);
     ) f% j5 C7 z" h  ~2 s+ |, X3 Z
315. 
     
316.           /* Prepare to write to LCD RAM */
     
317.           OLED_WriteReg(0x2C, (uint8_t*)NULL, 0);   /* RAM write data command */
     
318. 
     & n! j- \3 w- H5 U
319.           /* Write RAM data */
     
320.           dataB = (uint8_t)(data >> 8);
     3 t( v% s+ g9 ]1 o6 n1 ^( U2 u
321.           LcdWriteData(dataB);
     
322.           dataB = (uint8_t)data;
     
323.           LcdWriteData(dataB);
     ) I/ e4 g5 I; n; U" a
324. }
     
325. 
     
326. uint8_t endian_buffer[480];
     ! w% J4 u4 I6 T0 o; c
327. 
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328. void OLED_WriteLine(uint16_t Xpos, uint16_t Ypos, uint16_t *RGBCode, uint16_t pointNum)
     
329. {
     
330.           /* Set Cursor */
     
331.           OLED_SetCursor(Xpos, Ypos);
     
332. 
     
333.           /* Prepare to write to LCD RAM */
     ( u, Q5 ?" V& P4 v+ n
334.           OLED_WriteReg(0x2C, (uint8_t*)NULL, 0);   /* RAM write data command */
     * x2 o/ X* s- ]7 F$ W* S8 U' X, h
335. 
     1 W/ }8 I" F7 T5 u% Z7 G
336.           for (uint16_t i = 0; i < pointNum; i++) {
     
337.             endian_buffer[2*i] = (uint8_t)(RGBCode[i] >> 8);
     8 O7 G) i" ?9 n) j+ ]; Y& }
338.             endian_buffer[2*i + 1] = (uint8_t)RGBCode[i];
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339.           }
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340. 
     $ |; K. I* m1 G/ F! ~' I* _
341.           /* Write RAM data */
     
342.           LcdWriteDataMultiple(endian_buffer, pointNum*2);
     / p. S4 b! |. O/ t# _# i
343. }
     
344. 
     
345. /********************************************************************
     7 P; |4 _# t- S, y* h3 X
346. *
     
347. *   LcdWriteReg
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348. *
     ( E$ ]$ m# ^. `# |
349. *         Function description:
     
350. *   Sets display register
     ) ^' ?; @- F1 `1 W! K/ k/ S* L  d1 f
351. */
     
352. void LcdWriteReg(uint8_t Data)
     
353. {
     
354.           Data_Cmd_State(0);
     
355.           HAL_SPI_Transmit(&hspi1, &Data, 1, 10);
     
356. }
     
357. 
     7 N+ a  ~0 G- v3 t
358. /********************************************************************
     " m' \# T/ A" H2 }! F
359. *
     # e/ S9 q+ P  \3 L7 F
360. *          LcdWriteData
     
361. *
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362. *         Function description:
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363. *   Writes a value to a display register
     / ]9 R- k/ R8 C& d) t: }
364. */
     
365. void LcdWriteData(uint8_t Data)
     4 m6 Z9 k% x) m
366. {
     - |9 ?% D) y. V' `0 W% n
367.           Data_Cmd_State(1);
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368.           HAL_SPI_Transmit(&hspi1, &Data, 1, 10);
     
369. }
     
370. 
     
371. /********************************************************************
     
372. *
     
373. *        LcdWriteDataMultiple
     
374. *
     
375. *         Function description:
     * P' \* n! g/ y2 u$ @
376. *   Writes multiple values to a display register.
     
377. */
     
378. void LcdWriteDataMultiple(uint8_t * pData, uint32_t NumItems)
     
379. {
     
380.           Data_Cmd_State(1);
     
381.           HAL_SPI_Transmit(&hspi1, pData, NumItems, 10);
     
382. }

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ASCII.h源码前文已给出，mian.c部分源码：

1. /* USER CODE END Header */
   1 t4 L8 y3 I+ A2 x% S
2. /* Includes ------------------------------------------------------------------*/
   ) b3 ?  p9 L0 j8 F( t
3. #include "main.h"
   
4. #include "dcmi.h"
   
5. #include "dma.h"
   
6. #include "i2c.h"
   
7. #include "usart.h"
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8. #include "spi.h"
   0 f2 \; j' Q& z. c* q
9. #include "gpio.h"
   # B* c- z; g3 M) t; d
10. 
    
11. /* Private includes ----------------------------------------------------------*/
    
12. /* USER CODE BEGIN Includes */
    
13. #include "../../ICore/key/key.h"
    9 K6 y8 B) ~% h; a! w4 I5 y) q( w
14. #include "../../ICore/led/led.h"
    
15. #include "../../ICore/print/print.h"
    * w: O" A, q, J: f8 L
16. #include "../../ICore/usart/usart.h"
    : I2 b( Z9 L3 n: p1 N
17. #include "../../ICore/oled/oled.h"
    , q0 ?' A+ E7 _  o
18. /* USER CODE END Includes */
    2 y% t  {# K1 o* {' y
19. 
    
20. /* Private typedef -----------------------------------------------------------*/
    4 \+ q7 A/ F& K, \7 r
21. /* USER CODE BEGIN PTD */
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22. 
    1 \7 F1 r, y8 p( t7 [& [. w( L
23. /* USER CODE END PTD */
    ' {& O# ^$ z4 W, F3 }7 o
24. 
    % }' G' U! X% |: F7 {. K
25. /* Private define ------------------------------------------------------------*/
    
26. /* USER CODE BEGIN PD */
    
27. /* USER CODE END PD */
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28. 
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29. /* Private macro -------------------------------------------------------------*/
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30. /* USER CODE BEGIN PM */
    
31. 
    
32. /* USER CODE END PM */
    
33. 
    3 e+ C9 H9 y* g
34. /* Private variables ---------------------------------------------------------*/
    
35. 
    
36. /* USER CODE BEGIN PV */
    
37. 
    
38. /* USER CODE END PV */
    
39. 
    
40. /* Private function prototypes -----------------------------------------------*/
    3 x* @& P5 \3 d' c# R" Y& `! o
41. void SystemClock_Config(void);
    6 ^$ P8 T- H9 c+ ^
42. /* USER CODE BEGIN PFP */
    * N# m3 D7 Z6 ~1 z) v2 Y+ ]
43. 
    ! m6 S2 P& V% }4 ~, p& C/ D. J5 t
44. /* USER CODE END PFP */
    0 ^; w3 e+ f# h
45. 
    * ^. S* B1 o$ ~. h4 U6 ?
46. /* Private user code ---------------------------------------------------------*/
      o+ }, v% r: _: M. i6 I
47. /* USER CODE BEGIN 0 */
    8 x: D$ }! A" `! `
48. //volatile uint8_t data1[LCD_RAM_SIZE];
    . u) ^( ]0 a! m
49. //volatile uint8_t data2[LCD_RAM_SIZE];
    , i- g" G( T' a0 W
50. //extern volatile uint8_t one_frame_done;
    
51. /* USER CODE END 0 */
    
52. 
    
53. /**
    3 K, I, I) }& m0 x* t+ ~5 B0 D
54.   * @brief  The application entry point.
    ! D( }* l- d3 y1 O+ C4 y9 J4 O
55.   * @retval int
    : n- a) b$ a( }+ s
56.   */
    # Q( J# o. n* m5 e" r* k; j6 b
57. int main(void)
    " j( N# v% |1 v9 S; x6 j, ~% m3 b
58. {
      e! h* @. T9 l& ]  N6 f
59.   /* USER CODE BEGIN 1 */
    
60. 
    & ]6 w6 d0 v' t
61.   /* USER CODE END 1 */
    ) V) N. E" w: p. Z$ j
62. 
    - _* E7 ^7 O* K' S1 k6 K
63.   /* MCU Configuration--------------------------------------------------------*/
    
64. 
    
65.   /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
    9 Z' J0 g' n. `% c- R- V, ?5 S- f) @
66.   HAL_Init();
    
67. 
    
68.   /* USER CODE BEGIN Init */
    
69. 
    
70.   /* USER CODE END Init */
    4 i5 Q/ G% Y7 [# Y9 J' b
71. 
    
72.   /* Configure the system clock */
    0 O. o' N8 {, H. T
73.   SystemClock_Config();
    
74. 
    
75.   /* USER CODE BEGIN SysInit */
    
76. 
    
77.   /* USER CODE END SysInit */
    # `! m7 G* Z  v4 L$ X/ o# B
78. 
      G8 H! O, }; e4 ^% t+ I
79.   /* Initialize all configured peripherals */
    4 {) X4 z1 J. A$ w5 H) m5 C% M! a
80.   MX_GPIO_Init();
    & a) S! J7 F$ p" q6 N
81.   MX_DMA_Init();
    
82.   MX_LPUART1_UART_Init();
    
83.   MX_SPI1_Init();
    " B2 @" n1 d2 h) y/ ?2 L: Z6 u# Q
84.   /* USER CODE BEGIN 2 */
    4 [% a, v2 P& y
85.   ResetPrintInit(&hlpuart1);
    6 J( z6 P, k- h& A
86.   HAL_UART_Receive_IT(&hlpuart1,(uint8_t *)&HLPUSART_NewData, 1); //再开启接收中断
    
87.   HLPUSART_RX_STA = 0;
    & t) t- r2 [! s2 P! P
88.   OLED_init();
    4 o, Q7 O( P2 f, U! {% s
89.   //
    & |) h% s, n3 F0 c5 z/ G0 m
90.   set_led0_val(0);
    
91.   set_led1_val(get_key0_val());
    . d1 b; y4 b8 k% n* c# M. b
92.   /* USER CODE END 2 */
    
93. 
    
94.   /* Infinite loop */
    
95.   /* USER CODE BEGIN WHILE */
    & t: x3 z  \& j6 D) V0 N
96.   while (1)
    
97.   {
    ( M0 e" v" a6 }: Y! `# j
98.           if(HLPUSART_RX_STA&0xC000){//溢出或换行，重新开始
    9 m1 _+ D: q( h( r9 v; `9 |
99.                   OLED_printf(10,10,"%.*s",HLPUSART_RX_STA&0X0FFF, HLPUSART_RX_BUF);
    
100.                   HLPUSART_RX_STA=0;//接收错误,重新开始
     2 w6 u% n: P' v- x
101.                   HAL_Delay(100);//等待
     
102.           }
     
103.           if(KEY_0())
     9 K, S6 t% L  I' P* @
104.           {
     ; C5 f2 K: k% d( }  V0 e
105.                   OLED_printf(10,10,"hello world to stm32!I am an embedded enthusiast.");
     : c0 s( b9 c. J2 a+ b- w- L
106.                   OLED_printf(10,48,"  STM32CubeIDE is an advanced C/C++ development platform "
     
107.                                   "with peripheral configuration, code generation, code compilation, "
     
108.                                   "and debug features for STM32 micro controllers and microprocessors.");
     
109. //                  OLED_printf(10,10,"!");
     , Y! N0 j* I9 x0 A! M
110.           }
     
111.           if(KEY_1())
     
112.           {
     
113.                   BSP_LCD_Clear(0xF800);
     ) G1 s% H1 q# F% a' K
114.                   printf("OLED_Clear\r\n");
     
115.           }
     
116.           if(KEY_2())
     
117.           {
     4 N! q8 H. o' z! i8 \
118.                   BSP_LCD_Clear_DMA(LCD_DISP_BLUE);
     
119.                   printf("OLED_Clear_DMA\r\n");
     
120.           }
     # H' q$ M, _8 d3 L
121.         Toggle_led0();
     7 |8 Q/ R5 t0 e" z5 D, ]; u
122.     /* USER CODE END WHILE */
     ( G5 W* N* \& Z
123. 
     
124.     /* USER CODE BEGIN 3 */
     
125.   }
     
126.   /* USER CODE END 3 */
     / t1 k4 n: w0 y! o6 }$ i( m
127. }

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