一、SPI 通信技术
$ k) \3 d. U3 [& \( n        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。

        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）。

" X, q- F% n4 h$ B* [/ s（1）MISO– Master Input Slave Output，主设备数据输入，从设备数据输出；

（2）MOSI– Master Output Slave Input，主设备数据输出，从设备数据输入；

+ r* h* ~' Q% M: q（3）SCLK – Serial Clock，时钟信号，由主设备产生；

（4）CS – Chip Select，从设备使能信号，由主设备控制。

: K' @: e6 x) U1 a8 H. ^) `        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。


二、SPI通信参配
9 b. d- z) G( t3 r  ?" b! h6 s        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：



         LCD 显示屏针脚定义：

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! \6 R7 t- N% I' i9 F         MCU连接LCD的芯片引脚定义如下：
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         各个引脚的具体参数：



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

        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：
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( ?6 F2 l# O7 c        1）开启SPI1
3 U9 V! l+ j1 N5 R, a; q* M/ `        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
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' Q! d& j1 V2 R& W5 E# E) v         3）开启spi1的中断功能



3 k9 y0 ?% X9 G9 y1 A' X         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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+ F# e! u$ R! H         6）完成配置后，点击保存或生成代码的按钮生成代码
0 }0 W; X/ N0 s& ]! X$ e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。

2 E# u  Q0 Y4 {" h$ Y. B1 z        1）辅助引脚设值
        在oled.h中加入对LCD引脚（GPIO）设值控制函数
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1. //对该位写1或0
   
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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+ }: q' L" i2 M! @        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
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1. /********************************************************************
   , y" Y9 _; [4 f' b& i( W! C# Q5 v; F
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)
   
9. {
   
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. *
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16. *          LcdWriteData
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17. *
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18. *         Function description:
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19. *   Writes a value to a display register
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20. */
    
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. }
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26. 
    
27. /********************************************************************
    
28. *
    
29. *        LcdWriteDataMultiple
    5 r7 ?# e0 l8 K+ X# }
30. *
    
31. *         Function description:
    
32. *   Writes multiple values to a display register.
    
33. */
    
34. void LcdWriteDataMultiple(uint8_t * pData, uint32_t NumItems)
    
35. {
    8 ^2 v- i  ?) B0 A* `3 j
36.           Data_Cmd_State(1);
    
37.           HAL_SPI_Transmit(&hspi1, pData, NumItems, 10);
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38. }

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        3）OLED初始化指令执行
' [! O; q9 [4 y        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 */
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2. struct OLED_function {
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3.   uint8_t cmd;
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4.   uint16_t data;
   
5. };
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6. 
   
7. /* Init script commands */
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8. enum OLED_cmd {
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9.   OLED_START,
   
10.   OLED_END,
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11.   OLED_CMD,
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12.   OLED_DATA,
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13.   OLED_DELAY
    
14. };
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15. //以上可放置头文件中
    $ E% }% c& M4 Y3 v
16. //以下放置源文件中
    
17. //初始化命令集
    
18. static struct OLED_function OLED_cfg_script[] = {
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19.   {OLED_START, OLED_START},
    
20.   {OLED_CMD, 0x11},
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21.   {OLED_DELAY, 120},
    
22.   {OLED_CMD, 0x36},
    
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},
    
29.   {OLED_DATA, 0x00},
    
30.   {OLED_DATA, 0x33},
    
31.   {OLED_DATA, 0x33},
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32.   {OLED_CMD, 0xb7},
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33.   {OLED_DATA, 0x72},
    
34.   {OLED_CMD, 0xbb},
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35.   {OLED_DATA, 0x3d},
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36.   {OLED_CMD, 0xc0},
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37.   {OLED_DATA, 0x2c},
    
38.   {OLED_CMD, 0xc2},
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39.   {OLED_DATA, 0x01},
    
40.   {OLED_CMD, 0xc3},
    
41.   {OLED_DATA, 0x19},
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42.   {OLED_CMD, 0xc4},
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43.   {OLED_DATA, 0x20},
    
44.   {OLED_CMD, 0xc6},
    
45.   {OLED_DATA, 0x0f},
    
46.   {OLED_CMD, 0xd0},
    
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},
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55.   {OLED_DATA, 0x05},
    
56.   {OLED_DATA, 0x2a},
    
57.   {OLED_DATA, 0x33},
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58.   {OLED_DATA, 0x41},
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59.   {OLED_DATA, 0x07},
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60.   {OLED_DATA, 0x13},
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61.   {OLED_DATA, 0x13},
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62.   {OLED_DATA, 0x29},
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63.   {OLED_DATA, 0x2f},
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64.   {OLED_CMD, 0xe1},
    
65.   {OLED_DATA, 0x70},
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66.   {OLED_DATA, 0x03},
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67.   {OLED_DATA, 0x09},
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68.   {OLED_DATA, 0x0a},
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69.   {OLED_DATA, 0x09},
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70.   {OLED_DATA, 0x06},
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71.   {OLED_DATA, 0x2b},
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72.   {OLED_DATA, 0x34},
    
73.   {OLED_DATA, 0x41},
    
74.   {OLED_DATA, 0x07},
    
75.   {OLED_DATA, 0x12},
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76.   {OLED_DATA, 0x14},
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77.   {OLED_DATA, 0x28},
    
78.   {OLED_DATA, 0x2e},
    
79.   {OLED_CMD, 0x21},
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80.   {OLED_CMD, 0x29},
    
81.   {OLED_CMD, 0x2a},
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82.   {OLED_DATA, 0x00},
    
83.   {OLED_DATA, 0x00},
    
84.   {OLED_DATA, 0x00},
    
85.   {OLED_DATA, 0xef},
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86.   {OLED_CMD, 0x2b},
    
87.   {OLED_DATA, 0x00},
    
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. 
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95. static void OLED_run_cfg_script()
    
96. {
    
97.           uint8_t data[2] = {0};
    
98.           int i = 0;
    
99.           int end_script = 0;
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100. 
     
101.           do {
     
102.             switch (OLED_cfg_script[i].cmd) {
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103.             case OLED_START:
     
104.               break;
     
105.             case OLED_CMD:
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106.               data[0] = OLED_cfg_script[i].data & 0xff;
     
107.               LcdWriteReg(data[0]);
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108.               break;
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109.             case OLED_DATA:
     
110.               data[0] = OLED_cfg_script[i].data & 0xff;
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111.               LcdWriteData(data[0]);
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112.               break;
     
113.             case OLED_DELAY:
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114.               HAL_Delay(OLED_cfg_script[i].data);
     
115.               break;
     
116.             case OLED_END:
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117.               end_script = 1;
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118.             }
     
119.             i++;
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120.           } while (!end_script);
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121. }

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        4）oled初始化
- K, u2 |/ r5 I5 F+ P        进行oled屏的初始化函数设计

1. //olde屏重置
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2. static void OLED_reset()
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3. {
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4.           OLED_RST_State(0);
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5.           HAL_Delay(200);
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6.           OLED_RST_State(1);
   
7.           HAL_Delay(150);
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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
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13.           OLED_reset();    //屏重置
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14.           OLED_run_cfg_script();//初始化指令集依次执行脚本函数
    
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
    
17. 
    * i& `5 S4 J  v5 g, W4 t5 z
18.           return HAL_OK;
    
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)
   
2. #define LCD_PIXEL_PER_BLOCK             (LCD_MAX_MEM16_BLOCK >> 1)
   
3. 
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4. static void spec_send_fb(uint16_t color, uint16_t pixel_num)
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5. {
   
6.           uint16_t real_mem[LCD_MAX_MEM16_BLOCK] = {0};
   
7. 
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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);
    2 I5 i3 }' h( g8 D  _
12.           if (pixel_num <= LCD_MAX_MEM16_BLOCK) {
    
13.                   LcdWriteDataMultiple((uint8_t*)real_mem, pixel_num << 1);
    
14.           } else {
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15.                   uint16_t count = pixel_num / LCD_MAX_MEM16_BLOCK;
    2 s1 G' f$ {3 A8 O
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);
    
19.                   }
    
20.                   LcdWriteDataMultiple((uint8_t*)real_mem, remain << 1);
    
21.           }
    $ m1 |7 I% j: `( O% n
22. }
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23. 
    
24. static void OLED_display_picture(void)
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25. {
    + h  `+ ~; V; i4 }/ w
26.   LcdWriteReg(OLED_RAMWR);
    
27.   spec_send_fb(0x0, WIDTH * HEIGHT / 4);
    % w+ O7 `+ d) N
28.   spec_send_fb(0x1111, WIDTH * HEIGHT / 4);
    
29.   spec_send_fb(0x7777, WIDTH * HEIGHT / 4);
    
30.   spec_send_fb(0xeeee, WIDTH * HEIGHT / 4);
    7 k- i' t* z0 @; E. ~2 y3 \
31. }

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  y- r# ?8 J* F5 _4 F; \) F      6）驱动调用
        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 */
   3 X. F: w5 X3 v; b# C7 J6 ]
2. #include "../../ICore/key/key.h"
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3. #include "../../ICore/led/led.h"
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4. #include "../../ICore/print/print.h"
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5. #include "../../ICore/usart/usart.h"
   
6. #include "../../ICore/oled/oled.h"
   
7. /* USER CODE END Includes */
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8. ..............................................
   
9.     /* USER CODE BEGIN 2 */
   
10.   ResetPrintInit(&hlpuart1);
    
11.   HAL_UART_Receive_IT(&hlpuart1,(uint8_t *)&HLPUSART_NewData, 1); //再开启接收中断
    
12.   HLPUSART_RX_STA = 0;
    8 ?$ l% ]/ {8 c' I
13.   OLED_init();
    
14. 
    $ i) K6 B# G  P: G- e
15.   set_led0_val(0);
    $ h* l- l4 ^: s4 d6 R9 i; r
16.   set_led1_val(get_key0_val());
    
17.   /* USER CODE END 2 */
    
18.   /* USER CODE BEGIN WHILE */
    
19.   while (1)
    1 G) _, q8 S, L5 G
20.   {
    
21.     Toggle_led0();
    
22.     /* USER CODE END WHILE */

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        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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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：
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1. /*
   
2. * ASCII.h
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3. *
   8 W  l# p" y9 ]) C$ T5 K8 ~! _
4. *  Created on: Jun 11, 2022
   
5. *      Author: Administrator
   
6. */
   
7. 
   
8. #ifndef OLED_ASCII_H_
   7 L3 |4 K/ k& d5 r/ [
9. #define OLED_ASCII_H_
   . B& Z( E6 h  k* B" l
10. 
    ! ^7 V* B. J# u5 w0 J5 t
11. // ------------------  ASCII字模的数据表 ------------------------ //
    
12. // 码表从0x20~0x7e                                                //
    
13. // 字库:  纵向取模下高位// （调用时要减512）
    
14. // -------------------------------------------------------------- //
    
15. const uint8_t ASCII_8x16[] =  {            // ASCII
    $ r; h6 Z& l8 d# x' Z$ D' Z* e
16.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,  // - -
    
17.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    ) w2 J3 ?5 J" b# I  }7 ^
18. 
    
19.         0x00,0x00,0x38,0xFC,0xFC,0x38,0x00,0x00,  // -!-
    5 Y6 H1 H5 |- n! S) V; X
20.         0x00,0x00,0x00,0x0D,0x0D,0x00,0x00,0x00,
    
21. 
    
22.         0x00,0x0E,0x1E,0x00,0x00,0x1E,0x0E,0x00,  // -"-
    
23.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    
24. 
    
25.         0x20,0xF8,0xF8,0x20,0xF8,0xF8,0x20,0x00,  // -#-
    
26.         0x02,0x0F,0x0F,0x02,0x0F,0x0F,0x02,0x00,
    / I3 c$ s2 e( K
27. 
    8 ?3 O1 k. E( H
28.         0x38,0x7C,0x44,0x47,0x47,0xCC,0x98,0x00,  // -$-
    
29.         0x03,0x06,0x04,0x1C,0x1C,0x07,0x03,0x00,
    
30. 
    
31.         0x30,0x30,0x00,0x80,0xC0,0x60,0x30,0x00,  // -%-
    
32.         0x0C,0x06,0x03,0x01,0x00,0x0C,0x0C,0x00,
    4 D8 v9 F" h( g& o* [
33. 
    % n; \1 M- z' z+ y& E8 @  B
34.         0x80,0xD8,0x7C,0xE4,0xBC,0xD8,0x40,0x00,  // -&-
    % ^9 ]/ x& {' o+ C! k9 `
35.         0x07,0x0F,0x08,0x08,0x07,0x0F,0x08,0x00,
    + f2 p/ g- b9 d* u
36. 
    / J0 s1 H1 @$ W' R5 |* `8 _
37.         0x00,0x10,0x1E,0x0E,0x00,0x00,0x00,0x00,  // -'-
    * M- |3 {. }) f  S0 Y. M; g) q! P
38.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    / n( T( L* Q9 P1 d& N8 w( n
39. 
    2 I3 z! z; I9 y& r$ ?5 M
40.         0x00,0x00,0xF0,0xF8,0x0C,0x04,0x00,0x00,  // -(-
    9 r0 N9 L& x1 h. b) p) V
41.         0x00,0x00,0x03,0x07,0x0C,0x08,0x00,0x00,
    + v+ {  |) g1 F& [: c& o8 y+ k
42. 
    2 _; v0 ]0 C: h1 ?) [( y
43.         0x00,0x00,0x04,0x0C,0xF8,0xF0,0x00,0x00,  // -)-
    " f, f7 i6 m7 t9 D$ W5 {0 h
44.         0x00,0x00,0x08,0x0C,0x07,0x03,0x00,0x00,
    
45. 
    
46.         0x80,0xA0,0xE0,0xC0,0xC0,0xE0,0xA0,0x80,  // -*-
    
47.         0x00,0x02,0x03,0x01,0x01,0x03,0x02,0x00,
    
48. 
    / s3 Q  M8 R: s# |' z% f( H
49.         0x00,0x80,0x80,0xE0,0xE0,0x80,0x80,0x00,  // -+-
    
50.         0x00,0x00,0x00,0x03,0x03,0x00,0x00,0x00,
    
51. 
    
52.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,  // -,-
    ' U- E8 g% o0 R) m
53.         0x00,0x00,0x10,0x1E,0x0E,0x00,0x00,0x00,
    4 S* M  r( R% M2 J+ ]
54. 
    1 C1 S) u: o0 Y6 m) s# G
55.         0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x00,  // ---
    ! M1 ]/ A& s' b7 b& B
56.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    
57. 
    - V% X4 `2 D1 ]  ^3 y# Z! ?
58.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,  // -.-
    
59.         0x00,0x00,0x00,0x0C,0x0C,0x00,0x00,0x00,
    ) }" ~" h' t, X/ c- {
60. 
    $ e' z+ E) W& u" L& O2 D% f, |
61.         0x00,0x00,0x00,0x80,0xC0,0x60,0x30,0x00,  // -/-
    + o: c' E$ O/ ~) O
62.         0x0C,0x06,0x03,0x01,0x00,0x00,0x00,0x00,
      y6 I$ N1 D6 }& i+ I
63. 
    7 Z8 X8 J3 L; w
64.         0xF8,0xFC,0x04,0xC4,0x24,0xFC,0xF8,0x00,  // -0-
    
65.         0x07,0x0F,0x09,0x08,0x08,0x0F,0x07,0x00,
    0 Y" J5 I9 g2 X+ v+ L$ b+ H
66. 
    
67.         0x00,0x10,0x18,0xFC,0xFC,0x00,0x00,0x00,  // -1-
    
68.         0x00,0x08,0x08,0x0F,0x0F,0x08,0x08,0x00,
    # K* R& v4 e) q9 e* ]! x
69. 
    
70.         0x08,0x0C,0x84,0xC4,0x64,0x3C,0x18,0x00,  // -2-
    
71.         0x0E,0x0F,0x09,0x08,0x08,0x0C,0x0C,0x00,
    0 p8 c' a6 T/ a+ X+ @: k0 i* v0 E0 ?
72. 
    & i# m# `' d# j" `
73.         0x08,0x0C,0x44,0x44,0x44,0xFC,0xB8,0x00,  // -3-
    / [3 t! N" Y  b) B' i. o1 }
74.         0x04,0x0C,0x08,0x08,0x08,0x0F,0x07,0x00,
    
75. 
    5 D0 b* W. @' X9 Y1 u+ c# ~
76.         0xC0,0xE0,0xB0,0x98,0xFC,0xFC,0x80,0x00,  // -4-
    ' c9 w$ H) N& E1 v( E1 P# n
77.         0x00,0x00,0x00,0x08,0x0F,0x0F,0x08,0x00,
    & ^0 d6 R! I; y* g0 w+ o% E
78. 
    
79.         0x7C,0x7C,0x44,0x44,0xC4,0xC4,0x84,0x00,  // -5-
    
80.         0x04,0x0C,0x08,0x08,0x08,0x0F,0x07,0x00,
    
81. 
    
82.         0xF0,0xF8,0x4C,0x44,0x44,0xC0,0x80,0x00,  // -6-
    8 C" X2 Z8 @( e5 t6 h
83.         0x07,0x0F,0x08,0x08,0x08,0x0F,0x07,0x00,
    3 a" N' ~& u0 E- |# i' k
84. 
    
85.         0x0C,0x0C,0x04,0x84,0xC4,0x7C,0x3C,0x00,  // -7-
    
86.         0x00,0x00,0x0F,0x0F,0x00,0x00,0x00,0x00,
    7 X! O1 |  o* E
87. 
    
88.         0xB8,0xFC,0x44,0x44,0x44,0xFC,0xB8,0x00,  // -8-
    
89.         0x07,0x0F,0x08,0x08,0x08,0x0F,0x07,0x00,
    
90. 
    4 @( y6 N6 b7 V/ ?: X; f
91.         0x38,0x7C,0x44,0x44,0x44,0xFC,0xF8,0x00,  // -9-
    
92.         0x00,0x08,0x08,0x08,0x0C,0x07,0x03,0x00,
    0 C4 v5 f5 _# c+ I
93. 
    
94.         0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00,  // -:-
    & F% Q  N/ l! z- Q2 y
95.         0x00,0x00,0x00,0x06,0x06,0x00,0x00,0x00,
    
96. 
    - _0 T9 n1 Q- I7 j$ S2 T' }; d- Q
97.         0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00,  // -;-
    4 X# v1 a8 i+ J. S" u
98.         0x00,0x00,0x08,0x0E,0x06,0x00,0x00,0x00,
    
99. 
    # I  K; j6 ^& |/ e' W) d
100.         0x00,0x80,0xC0,0x60,0x30,0x18,0x08,0x00,  // -<-
     
101.         0x00,0x00,0x01,0x03,0x06,0x0C,0x08,0x00,
     1 d$ r, T! V# W6 H
102. 
     ! g2 }/ }. s# Z( J
103.         0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x00,  // -=-
     ) x$ ^" p" W" R; B" F( [( Y( r+ g1 O
104.         0x02,0x02,0x02,0x02,0x02,0x02,0x02,0x00,
     - x7 h# D/ q4 w* F
105. 
     3 }' [, A, v/ u' c1 `' ]1 V
106.         0x00,0x08,0x18,0x30,0x60,0xC0,0x80,0x00,  // ->-
     8 s3 b: ?+ `% h5 Z! Y7 I* |+ \
107.         0x00,0x08,0x0C,0x06,0x03,0x01,0x00,0x00,
     
108. 
     
109.         0x18,0x1C,0x04,0xC4,0xE4,0x3C,0x18,0x00,  // -?-
     
110.         0x00,0x00,0x00,0x0D,0x0D,0x00,0x00,0x00,
     
111. 
     4 c8 ^" |+ t! v. Y! \- m
112.         0xF0,0xF8,0x08,0xC8,0xC8,0xF8,0xF0,0x00,  // -@-
     * Z; v# @  X7 U4 E. s; e2 ^
113.         0x07,0x0F,0x08,0x0B,0x0B,0x0B,0x01,0x00,
     
114. 
     ! v4 P: R0 X8 o8 X$ _# `
115.         0xE0,0xF0,0x98,0x8C,0x98,0xF0,0xE0,0x00,  // -A-
     
116.         0x0F,0x0F,0x00,0x00,0x00,0x0F,0x0F,0x00,
     ! x, h2 C! R# m6 R
117. 
     ! S9 `9 C0 e5 w8 t" s4 f/ E+ `; R
118.         0x04,0xFC,0xFC,0x44,0x44,0xFC,0xB8,0x00,  // -B-
     , k' A! t2 A, g0 A' w" o1 m
119.         0x08,0x0F,0x0F,0x08,0x08,0x0F,0x07,0x00,
     8 v$ J8 \; \! y. h# n* d
120. 
     6 d' J( B% ~" S( }
121.         0xF0,0xF8,0x0C,0x04,0x04,0x0C,0x18,0x00,  // -C-
     
122.         0x03,0x07,0x0C,0x08,0x08,0x0C,0x06,0x00,
     
123. 
     ' F: `, q$ s9 s$ L6 E, y
124.         0x04,0xFC,0xFC,0x04,0x0C,0xF8,0xF0,0x00,  // -D-
     
125.         0x08,0x0F,0x0F,0x08,0x0C,0x07,0x03,0x00,
     + g" A) P. R2 H/ i3 t7 S7 d
126. 
     . P- L' `# m- A- i, C! N! w; c
127.         0x04,0xFC,0xFC,0x44,0xE4,0x0C,0x1C,0x00,  // -E-
     3 O' Q& s. z7 F1 R9 j/ D& ~5 m
128.         0x08,0x0F,0x0F,0x08,0x08,0x0C,0x0E,0x00,
     5 z9 G+ \9 l- c. m  C
129. 
     2 S0 z" T: t- k, p: s0 O) D- ^4 u
130.         0x04,0xFC,0xFC,0x44,0xE4,0x0C,0x1C,0x00,  // -F-
     . P4 A5 K( ?3 z
131.         0x08,0x0F,0x0F,0x08,0x00,0x00,0x00,0x00,
     + j9 f/ M) Q# N" m. K% r0 Q
132. 
     
133.         0xF0,0xF8,0x0C,0x84,0x84,0x8C,0x98,0x00,  // -G-
     4 E! r3 [  P4 z: s
134.         0x03,0x07,0x0C,0x08,0x08,0x07,0x0F,0x00,
     $ m8 r% r! z" L' r9 C. r; z1 w
135. 
     / g1 e3 j7 V* b8 {6 h& J1 f' [
136.         0xFC,0xFC,0x40,0x40,0x40,0xFC,0xFC,0x00,  // -H-
     
137.         0x0F,0x0F,0x00,0x00,0x00,0x0F,0x0F,0x00,
     
138. 
     - Y6 Q9 r# f, F2 T
139.         0x00,0x00,0x04,0xFC,0xFC,0x04,0x00,0x00,  // -I-
     * Z7 j, M4 ?% n( Y8 k! d, b1 K
140.         0x00,0x00,0x08,0x0F,0x0F,0x08,0x00,0x00,
     . J& y( d, g. h! `+ M  |, R( J/ [
141. 
     
142.         0x00,0x00,0x00,0x04,0xFC,0xFC,0x04,0x00,  // -J-
     
143.         0x07,0x0F,0x08,0x08,0x0F,0x07,0x00,0x00,
     ( f- r7 ~3 G" c* ~
144. 
     
145.         0x04,0xFC,0xFC,0xC0,0xF0,0x3C,0x0C,0x00,  // -K-
     7 I' j; o  _: a* m, w* S0 E
146.         0x08,0x0F,0x0F,0x00,0x01,0x0F,0x0E,0x00,
     
147. 
     
148.         0x04,0xFC,0xFC,0x04,0x00,0x00,0x00,0x00,  // -L-
     & j1 l& s* O2 w& |
149.         0x08,0x0F,0x0F,0x08,0x08,0x0C,0x0E,0x00,
     
150. 
     ' P( x( O- i' f) f3 n
151.         0xFC,0xFC,0x38,0x70,0x38,0xFC,0xFC,0x00,  // -M-
     , ]- @/ A$ @. L  w* u+ N
152.         0x0F,0x0F,0x00,0x00,0x00,0x0F,0x0F,0x00,
     
153. 
     
154.         0xFC,0xFC,0x38,0x70,0xE0,0xFC,0xFC,0x00,  // -N-
     " S; s+ \- ]6 ?9 K1 {9 g
155.         0x0F,0x0F,0x00,0x00,0x00,0x0F,0x0F,0x00,
     
156. 
     
157.         0xF0,0xF8,0x0C,0x04,0x0C,0xF8,0xF0,0x00,  // -O-
     
158.         0x03,0x07,0x0C,0x08,0x0C,0x07,0x03,0x00,
     
159. 
     
160.         0x04,0xFC,0xFC,0x44,0x44,0x7C,0x38,0x00,  // -P-
     ; U; c1 B" R; s4 A
161.         0x08,0x0F,0x0F,0x08,0x00,0x00,0x00,0x00,
     
162. 
     
163.         0xF8,0xFC,0x04,0x04,0x04,0xFC,0xF8,0x00,  // -Q-
     
164.         0x07,0x0F,0x08,0x0E,0x3C,0x3F,0x27,0x00,
     
165. 
     ) [: w+ Q+ ?- m9 o  X5 O/ C2 }
166.         0x04,0xFC,0xFC,0x44,0xC4,0xFC,0x38,0x00,  // -R-
     9 L6 `8 O/ p" {3 \
167.         0x08,0x0F,0x0F,0x00,0x00,0x0F,0x0F,0x00,
       r6 a, E2 x+ x
168. 
     
169.         0x18,0x3C,0x64,0x44,0xC4,0x9C,0x18,0x00,  // -S-
     
170.         0x06,0x0E,0x08,0x08,0x08,0x0F,0x07,0x00,
     # s5 C5 g/ D" H" K4 s
171. 
     
172.         0x00,0x1C,0x0C,0xFC,0xFC,0x0C,0x1C,0x00,  // -T-
     
173.         0x00,0x00,0x08,0x0F,0x0F,0x08,0x00,0x00,
     & R2 U3 R& V6 ~- ~* `. [* S. z
174. 
     
175.         0xFC,0xFC,0x00,0x00,0x00,0xFC,0xFC,0x00,  // -U-
     . @6 I7 Z, X- K
176.         0x07,0x0F,0x08,0x08,0x08,0x0F,0x07,0x00,
     3 O. D% U! D' f; J
177. 
     
178.         0xFC,0xFC,0x00,0x00,0x00,0xFC,0xFC,0x00,  // -V-
     
179.         0x01,0x03,0x06,0x0C,0x06,0x03,0x01,0x00,
     / p$ p/ n: L% J
180. 
     
181.         0xFC,0xFC,0x00,0x80,0x00,0xFC,0xFC,0x00,  // -W-
     , W8 G; T3 H; h( N9 A) M
182.         0x03,0x0F,0x0E,0x03,0x0E,0x0F,0x03,0x00,
     3 ?! {/ t8 }) u+ L, f* E* r
183. 
     
184.         0x0C,0x3C,0xF0,0xC0,0xF0,0x3C,0x0C,0x00,  // -X-
     / N3 J, C& ]5 `5 \; Y
185.         0x0C,0x0F,0x03,0x00,0x03,0x0F,0x0C,0x00,
     
186. 
     
187.         0x00,0x3C,0x7C,0xC0,0xC0,0x7C,0x3C,0x00,  // -Y-
     
188.         0x00,0x00,0x08,0x0F,0x0F,0x08,0x00,0x00,
     
189. 
     
190.         0x1C,0x0C,0x84,0xC4,0x64,0x3C,0x1C,0x00,  // -Z-
     % D8 x8 R9 M6 J
191.         0x0E,0x0F,0x09,0x08,0x08,0x0C,0x0E,0x00,
     / }7 ?0 |5 h$ o9 K6 O- w( A9 l- p
192. 
     
193.         0x00,0x00,0xFC,0xFC,0x04,0x04,0x00,0x00,  // -[-
     
194.         0x00,0x00,0x0F,0x0F,0x08,0x08,0x00,0x00,
     6 X8 V. S' a# r& i! G% M! h
195. 
     5 n2 W- M# m% Q7 d: x! q9 I
196.         0x38,0x70,0xE0,0xC0,0x80,0x00,0x00,0x00,  // -\-
     
197.         0x00,0x00,0x00,0x01,0x03,0x07,0x0E,0x00,
     
198. 
     3 F# r$ a; X, g# ?
199.         0x00,0x00,0x04,0x04,0xFC,0xFC,0x00,0x00,  // -]-
     
200.         0x00,0x00,0x08,0x08,0x0F,0x0F,0x00,0x00,
     
201. 
     2 `/ z1 R( q+ {* C. m4 @" K
202.         0x08,0x0C,0x06,0x03,0x06,0x0C,0x08,0x00,  // -^-
     
203.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
     , [# }& G) Z9 Q% y1 k# d& f* w* d/ J
204. 
     
205.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,  // -_-
     
206.         0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,
     ) b! B. ~2 s7 S8 J9 W' ^, B$ W
207. 
     
208.         0x00,0x00,0x03,0x07,0x04,0x00,0x00,0x00,  // -`-
     ' v# O- `# R2 t" S6 _
209.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
     9 S' e/ Y  \* |4 H9 @4 P- r  T
210. 
     ' A% N8 k$ i9 |' d
211.         0x00,0xA0,0xA0,0xA0,0xE0,0xC0,0x00,0x00,  // -a-
     
212.         0x07,0x0F,0x08,0x08,0x07,0x0F,0x08,0x00,
     ' _. x8 F: n, \8 C9 F/ s
213. 
     
214.         0x04,0xFC,0xFC,0x20,0x60,0xC0,0x80,0x00,  // -b-
     3 l  a7 d) Y- F& Z
215.         0x08,0x0F,0x07,0x08,0x08,0x0F,0x07,0x00,
     
216. 
     
217.         0xC0,0xE0,0x20,0x20,0x20,0x60,0x40,0x00,  // -c-
     
218.         0x07,0x0F,0x08,0x08,0x08,0x0C,0x04,0x00,
     
219. 
     
220.         0x80,0xC0,0x60,0x24,0xFC,0xFC,0x00,0x00,  // -d-
     $ K8 E3 I" t1 U2 Q
221.         0x07,0x0F,0x08,0x08,0x07,0x0F,0x08,0x00,
     
222. 
     ' P& F' c+ g9 i, k- p
223.         0xC0,0xE0,0xA0,0xA0,0xA0,0xE0,0xC0,0x00,  // -e-
     
224.         0x07,0x0F,0x08,0x08,0x08,0x0C,0x04,0x00,
     
225. 
     : y1 Y% {. m) {7 l6 e' v
226.         0x40,0xF8,0xFC,0x44,0x0C,0x18,0x00,0x00,  // -f-
     ! T. S) x6 \' B* R
227.         0x08,0x0F,0x0F,0x08,0x00,0x00,0x00,0x00,
     4 k( f% A) Q) J: l' [
228. 
     3 u2 ~" x: R* O4 y" I8 R
229.         0xC0,0xE0,0x20,0x20,0xC0,0xE0,0x20,0x00,  // -g-
     3 i: S; [; m  z( J
230.         0x27,0x6F,0x48,0x48,0x7F,0x3F,0x00,0x00,
     6 V1 N+ F( p7 h) x) i/ Z
231. 
     
232.         0x04,0xFC,0xFC,0x40,0x20,0xE0,0xC0,0x00,  // -h-
     4 }) G6 v5 V5 J  A7 ^
233.         0x08,0x0F,0x0F,0x00,0x00,0x0F,0x0F,0x00,
     
234. 
     3 k9 V* ?! z% D. X1 O9 Q9 Z. N
235.         0x00,0x00,0x20,0xEC,0xEC,0x00,0x00,0x00,  // -i-
     
236.         0x00,0x00,0x08,0x0F,0x0F,0x08,0x00,0x00,
     - f( M& i' S1 m. y( p
237. 
     * L  \. _! x7 N. y0 y* Y+ d
238.         0x00,0x00,0x00,0x00,0x20,0xEC,0xEC,0x00,  // -j-
     
239.         0x00,0x30,0x70,0x40,0x40,0x7F,0x3F,0x00,
     
240. 
     
241.         0x04,0xFC,0xFC,0x80,0xC0,0x60,0x20,0x00,  // -k-
     # t% b/ E3 \0 v7 _  }6 t) t  I
242.         0x08,0x0F,0x0F,0x01,0x03,0x0E,0x0C,0x00,
     1 D# E  `1 Z6 A' Q
243. 
     1 Z8 Y" @% D, i+ P: E2 O
244.         0x00,0x00,0x04,0xFC,0xFC,0x00,0x00,0x00,  // -l-
     * P8 {  Z& ?' R+ `6 j9 \+ b$ a& ]
245.         0x00,0x00,0x08,0x0F,0x0F,0x08,0x00,0x00,
     
246. 
     8 s7 Q7 N1 _" b2 t# a
247.         0xE0,0xE0,0x60,0xC0,0x60,0xE0,0xC0,0x00,  // -m-
     : t* \9 x3 y1 h% L6 ^
248.         0x0F,0x0F,0x00,0x0F,0x00,0x0F,0x0F,0x00,
     
249. 
     # U) q) W5 X, ~, p" [4 e$ I* I5 v- a
250.         0x20,0xE0,0xC0,0x20,0x20,0xE0,0xC0,0x00,  // -n-
     
251.         0x00,0x0F,0x0F,0x00,0x00,0x0F,0x0F,0x00,
     
252. 
     ' B7 Z0 C" v0 U
253.         0xC0,0xE0,0x20,0x20,0x20,0xE0,0xC0,0x00,  // -o-
     ) w" f& R3 m" S0 \+ `* a) X
254.         0x07,0x0F,0x08,0x08,0x08,0x0F,0x07,0x00,
     ) m9 q3 d+ T7 z
255. 
     
256.         0x20,0xE0,0xC0,0x20,0x20,0xE0,0xC0,0x00,  // -p-
     
257.         0x40,0x7F,0x7F,0x48,0x08,0x0F,0x07,0x00,
     
258. 
     9 Z7 B0 ]# D5 q7 s  e$ M
259.         0xC0,0xE0,0x20,0x20,0xC0,0xE0,0x20,0x00,  // -q-
     6 s* a0 a; I0 S/ m* |
260.         0x07,0x0F,0x08,0x48,0x7F,0x7F,0x40,0x00,
     3 r* l+ Q- O4 K( f8 _8 z6 K+ [7 M
261. 
     
262.         0x20,0xE0,0xC0,0x60,0x20,0x60,0xC0,0x00,  // -r-
     
263.         0x08,0x0F,0x0F,0x08,0x00,0x00,0x00,0x00,
     
264. 
     
265.         0x40,0xE0,0xA0,0x20,0x20,0x60,0x40,0x00,  // -s-
       F4 o5 K9 M, `% q) ~9 f* x
266.         0x04,0x0C,0x09,0x09,0x0B,0x0E,0x04,0x00,
     4 T" c/ h( Z) \( m& H
267. 
     
268.         0x20,0x20,0xF8,0xFC,0x20,0x20,0x00,0x00,  // -t-
     7 f4 S( L4 u/ ]* s8 p% z/ V
269.         0x00,0x00,0x07,0x0F,0x08,0x0C,0x04,0x00,
     - I8 }8 ~, ]" ?, Z
270. 
     
271.         0xE0,0xE0,0x00,0x00,0xE0,0xE0,0x00,0x00,  // -u-
     
272.         0x07,0x0F,0x08,0x08,0x07,0x0F,0x08,0x00,
     & e& P4 g* ]8 Q2 W9 j! y2 ]
273. 
     
274.         0x00,0xE0,0xE0,0x00,0x00,0xE0,0xE0,0x00,  // -v-
     
275.         0x00,0x03,0x07,0x0C,0x0C,0x07,0x03,0x00,
     / t8 {/ t2 a0 f& T) ]
276. 
     ' ~. g) d% n- \6 G
277.         0xE0,0xE0,0x00,0x00,0x00,0xE0,0xE0,0x00,  // -w-
     
278.         0x07,0x0F,0x0C,0x07,0x0C,0x0F,0x07,0x00,
     : M- R" n3 v6 t/ t" _
279. 
     . h; g3 I0 f3 R7 A
280.         0x20,0x60,0xC0,0x80,0xC0,0x60,0x20,0x00,  // -x-
     : D6 \* A8 D7 m9 w" F- x; `
281.         0x08,0x0C,0x07,0x03,0x07,0x0C,0x08,0x00,
     
282. 
     
283.         0xE0,0xE0,0x00,0x00,0x00,0xE0,0xE0,0x00,  // -y-
     , k2 x# u0 `5 l: o
284.         0x47,0x4F,0x48,0x48,0x68,0x3F,0x1F,0x00,
     
285. 
     
286.         0x60,0x60,0x20,0xA0,0xE0,0x60,0x20,0x00,  // -z-
     ! ?! K, \  o" V; [2 }
287.         0x0C,0x0E,0x0B,0x09,0x08,0x0C,0x0C,0x00,
     ' a4 K9 l7 K" k9 y, @
288. 
     
289.         0x00,0x40,0x40,0xF8,0xBC,0x04,0x04,0x00,  // -{-
     
290.         0x00,0x00,0x00,0x07,0x0F,0x08,0x08,0x00,
     : u: I. ~% h+ l( i
291. 
     
292.         0x00,0x00,0x00,0xBC,0xBC,0x00,0x00,0x00,  // -|-
     
293.         0x00,0x00,0x00,0x0F,0x0F,0x00,0x00,0x00,
     
294. 
     
295.         0x00,0x04,0x04,0xBC,0xF8,0x40,0x40,0x00,  // -}-
     5 w. A3 W" O& d; p9 |
296.         0x00,0x08,0x08,0x0F,0x07,0x00,0x00,0x00,
     
297. 
     
298.         0x08,0x0C,0x04,0x0C,0x08,0x0C,0x04,0x00,  // -~-
     
299.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
     ' b3 F8 Y" L* u' L* e9 P
300. 
     + I, p% S' h, B2 `' x
301.         0x80,0xC0,0x60,0x30,0x60,0xC0,0x80,0x00,  // --
     
302.         0x07,0x07,0x04,0x04,0x04,0x07,0x07,0x00,
     
303. };
     
304. 
     
305. #endif /* OLED_ASCII_H_ */

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【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：
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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
   
3. 0X00     0 0 0 0 0 0 0 0
   
4. 0X38     0 0 1 1 1 0 0 0
   0 }) o' @: d5 F& g( _( y
5. 0XFC     1 1 1 1 1 1 0 0
   
6. 0XFC     1 1 1 1 1 1 0 0
   $ n" m  B  }. E) R- A! f# b! s. I
7. 0X38     0 0 1 1 1 0 0 0
   
8. 0X00     0 0 0 0 0 0 0 0
   & z3 J4 t: ]' G/ |8 ?& C
9. 0X00     0 0 0 0 0 0 0 0
   
10. 
    
11. 0X00     0 0 0 0 0 0 0 0
    1 |& X2 J+ |5 l0 a
12. 0X00     0 0 0 0 0 0 0 0
    
13. 0X00     0 0 0 0 0 0 0 0
    1 j" n+ }/ J1 ~; _$ q' `4 P
14. 0X0D     0 0 0 0 1 1 0 1
    
15. 0X0D     0 0 0 0 1 1 0 1
    
16. 0X00     0 0 0 0 0 0 0 0
    
17. 0X00     0 0 0 0 0 0 0 0
    ( n0 ]1 f! v$ U8 [$ y
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：
4 s6 ?$ A: O3 K2 l

1. //将8*8二进制矩阵翻转
   5 A  t1 z, `6 K
2. 0X000X000X380XFC0XFC0X380X000X00
   
3. 0        0        0        0        0        0        0        0
   & z/ c# f! r% c) Y) m/ a
4. 0        0        0        0        0        0        0        0
   # r7 |3 r# {: q, W$ I% d& x
5. 0        0        0        1        1        0        0        0
   5 a1 d( \% z" {$ e% Q2 i. C
6. 0        0        1        1        1        1        0        0
   
7. 0        0        1        1        1        1        0        0
   0 y/ y' _/ W* m1 a# O: b/ Q
8. 0        0        1        1        1        1        0        0
   
9. 0        0        0        1        1        0        0        0
   
10. 0        0        0        1        1        0        0        0
    $ ?7 I  d; p* l/ F
11. 0X000X000X000X0D0X0D0X000X000X00
    ; v' r. k/ `6 c8 M) _
12. 0        0        0        1        1        0        0        0
    
13. 0        0        0        0        0        0        0        0
    
14. 0        0        0        1        1        0        0        0
    ! z7 x9 E/ [! M# H. t
15. 0        0        0        1        1        0        0        0
    
16. 0        0        0        0        0        0        0        0
    
17. 0        0        0        0        0        0        0        0
    
18. 0        0        0        0        0        0        0        0
    
19. 0        0        0        0        0        0        0        0
    
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
    ( |* n3 k. g5 f- Q$ s- d9 {
22. 00000000
    2 Z. E7 Z$ l0 c
23. 00000000
    & ^! N& X: n* S% F
24. 00011000
    ! w( `* L/ i" a& H) C4 L) m
25. 00111100
    , r3 @4 I; y: T7 m, h8 R
26. 00111100
    
27. 00111100
    
28. 00011000
    9 U: N  V( o: F( g5 Z, [8 p) o) n
29. 00011000
    $ K& e/ p% T0 {% f
30. 00011000
    0 Y! [, J2 q- a* b  M9 T8 F: ?
31. 00000000
    
32. 00011000
    
33. 00011000
    - i7 y/ K/ I+ V
34. 00000000
    * M; H3 `# L& I
35. 00000000
    ) f+ }& l0 K4 w/ s6 m# G0 K2 Q$ ?
36. 00000000
    
37. 00000000
    6 x" _9 C# ^& W5 M  c$ {5 J
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
% J% [+ q) v7 _2 `% p' W4 C  P
- A, K/ b/ A8 K7 K. g7 |$ c        现在给出字符8*16二进制矩阵获取代码：
/ Z& B% v" K" w' M$ W' y

1. //addr为字符的地址信息
   ) C% }+ a& v% ^0 I( w1 g/ ]; t$ d
2.         uint8_t buffer[16][8]={0};
   
3.         for(uint8_t i=0; i<16; i++)
   
4.         {
   ' b$ w6 B7 S- q) m
5.                 uint16_t buf=ASCII_8x16[(addr*16)+i-512];
   
6.                 printf("0X%02X ",buf);
   
7.                 for(uint8_t j=0;j<8;j++){
   9 }9 E2 o5 u5 X7 q$ x  G" C) l
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
   # ?. z- H7 N5 M  R  ?2 }( N
9.                         buffer[8*(i/8)+j][i%8]=(0x01&(buf>>j))>0?1:0;
   9 h/ C, q( k& c
10.                 }
    ) \) c% ]( W8 @& q2 u9 Y$ |
11.                 printf("\r\n");
    
12.         }
    
13.         for(uint8_t i=0; i<16; i++)
    
14.         {
    
15.                 for(uint8_t j=0;j<8;j++){
    
16.                         printf("%d",buffer[i][j]);
    
17.                 }
    
18.                 printf("\r\n");
      M8 }/ y6 D9 Y/ y7 G5 K
19.         }

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        （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：

  v$ T- i+ E! u8 G
4 z# f7 `# S7 b" V$ x5 f, |
【3】字符串olde输出
# o- @* J0 b# P        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
   , J; m0 p& M9 z7 D
2. void OLED_DISPLAY_8x16(uint8_t x, uint8_t y, uint16_t w){ //要显示汉字的编号
   + p4 D& ~& a$ V+ F! ]) e. j* V
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.         uint16_t textData[16][8]={0};
   
6. //        uint8_t buffer[16][8]={0};
   6 U( |4 m( G- e
7.         for(uint8_t i=0; i<16; i++)
   1 s8 J2 B* x4 v. p8 O
8.         {
   - [! C1 ^$ _4 [. n4 W% D" R
9.                 uint16_t buf=ASCII_8x16[(w*16)+i-512];
   
10. //                printf("0X%02X ",buf);
    . E. ?2 U4 Q: F# [+ Q+ B  b
11.                 for(uint8_t j=0;j<8;j++){
    
12. //                        printf("%d ",(0x01&(buf>>j))>0?0x01:0x00);
    , X  f1 b$ r5 b3 _$ Q, _3 L
13. //                        buffer[8*(i/8)+j][i%8]=(0x01&(buf>>j))>0?1:0;
    
14.                         color = (0x01&(buf>>j))>0?LCD_DISP_BLACK:LCD_DISP_BLUE;
    ! ~# E4 ?) X( z2 X" O: G
15.                         textData[8*(i/8)+j][i%8] = color;
    : J* e; j$ p( G
16. //                        OLED_WritePixel(x+i%8,y+8*(i/8)+j,color);//单像素渲染
    5 P8 O6 K" X, b$ ^- L! t9 O
17.                 }
    $ k6 f7 q7 j6 A" \3 S8 M
18. //                printf("\r\n");
    
19.         }
    - i( T' X, L0 K: H
20.         for(uint8_t i=0; i<16; i++)
    ! O) L3 b& _; ~  ~. {# ^
21.         {
    
22.                 OLED_WriteLine(x,y+i,textData[i],8);//列像素渲染
    
23. //                for(uint8_t j=0;j<8;j++){
    ; o/ I0 Z, s! B1 m
24. //                        printf("%d",buffer[i][j]);
    8 ]9 e- s- N5 M, Y
25. //                }
    
26. //                printf("\r\n");
    
27.         }
    
28. }
    
29. 
    
30. //用于OLED_printf函数专用的显示程序
    
31. void OLED_printf_US(uint8_t xpos,uint8_t ypos,uint8_t *str,uint8_t i){
    
32.         uint8_t r=0;
    
33.         while(i != r){//i是长度值，当显示到i之后退出
    
34.                 OLED_DISPLAY_8x16(xpos+r*8,ypos,*str++);//显示英文与数字8*16的ASCII码
    
35.                 r++;
    7 F: D) p3 i! M, m* W# r7 b9 K
36.     }
    % {6 D# s, ], O
37. }
    , D: q* U9 i  D& U5 W
38. //OLED专用的printf函数
    , |# E& R& |& Y, @+ e0 t/ K
39. //调用方法：OLED_printf(0,0,"123");
    / ^  A% l8 t" f
40. //注意若xpos或ypos过大，并内容较多时，会出现溢出边界
    8 ]* G3 L+ p3 a- j) c
41. #define line_size 29
    2 l! ?8 _( i- H/ b% m2 K, d
42. #define row_size 16
    
43. void OLED_printf (uint8_t xpos,uint8_t ypos,char *fmt, ...)
    " I: k6 x0 o4 `+ Z
44. {
    
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
    
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
    
48. //    printf("row=%d\r\n",row);
    
49.     for(uint16_t i=0;i<row;i++){
    
50.         va_list arg_ptr;
    " y' {& x. J/ w* J
51.         va_start(arg_ptr,fmt);
    - R  G& w* u8 |+ K" F- k% `$ n
52.         vsnprintf(buff, line_size,fmt+i*line_size,arg_ptr);//数据转换
    9 y( _. m# x( x
53.         size=strlen(buff);                                        //得出数据长度
    & I; l- z. L- r: h2 I# N
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）
    % }+ a3 l, ]0 n
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
    ! I9 D' C0 j7 y% Q; Y
56.         va_end(arg_ptr);
    
57.     }
    6 m& k# b7 z& {5 b1 ^$ J$ ]
58. }

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【4】SPI的直接输出和DMA输出区别实现
        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. {
   8 A. U3 V8 @4 Z4 Z$ v. T) @. P
3.     /* 指定X方向操作区域 */
   
4.         LcdWriteReg(0x2a);
   
5.         LcdWriteData(x1 >> 8);
   7 a( ]5 w4 {/ ]0 D
6.         LcdWriteData(x1);
   
7.         LcdWriteData(x2 >> 8);
   
8.         LcdWriteData(x2);
   
9. 
   : w: q- B8 G2 U, x
10.     /* 指定Y方向操作区域 */
    , v+ w5 Z' @$ y  |
11.         LcdWriteReg(0x2b);
    % @- ?( R* M% P, F, X/ u
12.     LcdWriteData(y1 >> 8);
    : }! J7 X& U3 d/ j) t. }* w
13.     LcdWriteData(y1);
    . \4 P" d: M3 w0 c- ~+ _
14.     LcdWriteData(y2 >> 8);
    6 T7 t8 u4 o5 `2 A/ C  C* U& j# a
15.     LcdWriteData(y2);
    * u7 o; `5 [# c/ [# U+ D
16. 
    , ?& Y$ Y) b2 [' N, v8 ^
17.     /* 发送该命令，LCD开始等待接收显存数据 */
    
18.     LcdWriteReg(0x2C);
    + `5 }$ o& ?- s% N
19. }
    # j/ g$ o2 ]( c6 D
20. //指定位置，绘制一行像素直到屏幕右侧
    
21. void OLED_SetCursor(uint16_t Xpos, uint16_t Ypos)
    
22. {
    0 O+ M8 D  x3 k
23.         LCD_Address_Set(Xpos,Ypos,WIDTH-1,Ypos);
    ) ]  W6 v+ E" Z, [9 o$ @
24. }
    5 \  S1 L' Q# P$ _% w
25. 
    1 V# W9 e6 ?+ c( g5 ^1 f5 D2 R
26. void BSP_LCD_Clear(uint16_t Color)
    ; D3 O6 ?0 _- H- L; a. w4 g
27. {
    
28.         uint8_t black_gui[480] = {0};
    
29.         memset(black_gui, Color, sizeof(black_gui));
    ! X3 F2 A/ [3 v: O
30. 
    
31.         for (uint32_t counter = 0; counter < 240; counter++)
    
32.         {
    9 ?+ }. F' L% `! P9 E. n
33.                 /* Set Cursor */
    
34.                 OLED_SetCursor(0, counter);
    5 i4 h2 ~* S, B
35.                 /* Prepare to write to LCD RAM */
    - `5 P2 l3 [8 w
36.                 OLED_WriteReg(0x2C, (uint8_t*)NULL, 0);
    ) s: H0 p, I1 d2 T" H$ N
37.                 /* RAM write data command */
    6 R+ }7 f) K8 m! T
38.                 LcdWriteDataMultiple(black_gui, 480);
    
39.         }
    
40. }
    
41. 
    0 N0 [" L" M, @" \; P4 ^( u
42. extern volatile uint8_t one_frame_done;
    
43. void BSP_LCD_Clear_DMA(uint16_t Color)
      {5 ~" I: Z- F1 P% q) C; |0 o& m( h
44. {
    : [8 ~( {. u/ J- S, L" j
45.         uint8_t black_gui_DMA[WIDTH*HEIGHT*2] = {0X00};
    ) L2 K' S5 N" ~" i  d$ U8 f+ E% z
46.         for(uint32_t i=0; i<WIDTH*HEIGHT; i++)
    
47.         {
    
48.                 black_gui_DMA[2*i]=Color>>8;
    . j& M! u9 z! M  n
49.                 black_gui_DMA[2*i+1] = Color;
    1 B, D  ^+ k- e; [2 I' w
50.         }
    
51.         printf("0X%02x%02x\r\n",black_gui_DMA[0],black_gui_DMA[1]);
    
52.         //需要分两次写入HAL_SPI_Transmit_DMA写入缓存大小uint16_t(0xfff,65535)
    - n& ?  i3 u" R/ ]! O
53.         one_frame_done = 0;
    2 V" m& F$ `& \+ S2 d$ G5 o
54.     /* 指定显存操作地址为全屏*/
    
55.     LCD_Address_Set(0, 0, WIDTH - 1, HEIGHT/2 - 1);
    ( N4 w& G3 k: D9 F
56.     Data_Cmd_State(1);/* 指定接下来的数据为数据 */
    ! g/ }/ B8 N+ i* ~
57.     /*DMA 写前半屏*/
    
58.     HAL_SPI_Transmit_DMA(&hspi1,black_gui_DMA, WIDTH*HEIGHT);
    2 C1 L, q3 I6 v8 e- c7 B3 a- M7 e
59.     while(!one_frame_done){/*release cpu and doing something else*/}
    
60.         one_frame_done = 0;
    : Q  Q# Q0 ?' }3 b3 _" s% m/ u4 N
61.     /* 指定显存操作地址为全屏*/
    
62.     LCD_Address_Set(0, HEIGHT/2, WIDTH - 1, HEIGHT - 1);
    : L" s. C) G) w: V  a$ Y! I/ ?: \
63.     Data_Cmd_State(1);/* 指定接下来的数据为数据 */
    
64.     /*DMA 写后半屏*/
    
65.     HAL_SPI_Transmit_DMA(&hspi1,black_gui_DMA+WIDTH*HEIGHT, WIDTH*HEIGHT);
    ; D- `0 ^. j4 c
66.     while(!one_frame_done){/*release cpu and doing something else*/}
    
67. }

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) N1 M0 D$ g$ j, O4 G+ G; w        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：
1 {% k7 M4 [" \- g5 b

1. //spi.c末加上spi的中断回调实现
   ' m0 m7 W1 h8 P8 I  r
2. /* USER CODE BEGIN 1 */
   , g- u5 H% L6 f/ \8 s' E
3. volatile uint8_t one_frame_done;
   . N5 ^6 Z2 k7 {2 ~- y
4. void HAL_SPI_TxCpltCallback(SPI_HandleTypeDef *hspi)
   . d- X& v3 g9 l! m3 S: v- |& I
5. {
     R% Y7 {6 v$ }5 [- Y/ O: D
6.         one_frame_done = 1;
   
7. }
   ! G/ c7 |4 b6 [' O* z
8. /* USER CODE END 1 */
   
9. 
   # A7 [) ^9 w9 r3 A
10. //用来替换调stm32l4xx_hal_spi.c的弱函数
    
11. __weak void HAL_SPI_TxCpltCallback(SPI_HandleTypeDef *hspi)
    
12. {
    3 ^: P+ D/ V( o" i0 o4 B3 {
13.   /* Prevent unused argument(s) compilation warning */
    ' x* }+ x  B$ B" E
14.   UNUSED(hspi);
    
15. 
    
16.   /* NOTE : This function should not be modified, when the callback is needed,
    
17.             the HAL_SPI_TxCpltCallback should be implemented in the user file
    
18.    */
    $ k, ~( V* `; S
19. }

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六、程序编译及测试
8 _+ t6 X% ]9 D- I0 Z2 R: l) Q7 B        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。

1. /* USER CODE BEGIN WHILE */
   4 ]4 p5 x- T  f# e7 b+ C0 r- w
2.   while (1)
   
3.   {
   & I# @! R+ h6 ?! g+ R9 D9 ?
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);
   ! k# b$ O5 D, [/ s8 l
6.                   HLPUSART_RX_STA=0;//接收错误,重新开始
   6 T; d/ |' P6 K" M; h; A! f; K
7.                   HAL_Delay(100);//等待
   
8.           }
   & G) u1 }3 ^; `9 E
9.           if(KEY_0())
   4 b6 D' `  v+ ]
10.           {
    & ]2 y% K( k# v5 B6 I# y" L
11.                   OLED_printf(10,10,"hello world to stm32!I am an embedded enthusiast.");
    
12.                   OLED_printf(10,48,"  STM32CubeIDE is an advanced C/C++ development platform "
    
13.                                   "with peripheral configuration, code generation, code compilation, "
    5 o* h9 W+ Q5 X
14.                                   "and debug features for STM32 micro controllers and microprocessors.");
    
15. //                  OLED_printf(10,10,"!");
    
16.           }
    . T- H, h9 `$ N
17.           if(KEY_1())
    
18.           {
    
19.                   BSP_LCD_Clear(0xF800);
      k& Q; s+ C" x* \
20.                   printf("OLED_Clear\r\n");
    5 j/ V; r! h* g* h! f/ u
21.           }
    ; I; J0 n& x  E% o/ H* q
22.           if(KEY_2())
    % T; i- O3 Q+ j2 k# {
23.           {
    
24.                   BSP_LCD_Clear_DMA(LCD_DISP_BLUE);
    
25.                   printf("OLED_Clear_DMA\r\n");
    $ m$ C# |; I" S. \
26.           }
    
27.         Toggle_led0();
    
28.     /* USER CODE END WHILE */

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0 e1 W3 S! ]! Z3 V0 |, Z        编译完成后测试效果如下：

        1）按键key1清屏，发送字符串


& c& E5 C9 \* `2 S1 R, r0 |
* Y1 i7 k) y9 q  C7 _& d  @& \6 V


# a1 j# w0 l- J. p: z% n# Q        2）按键key0，输出一段文字
0 l. _  O7 L2 u4 S( r
5 u+ \) w$ D: @
0 a  E6 R/ o4 [+ M$ a* x6 o2 e) A

" e6 S% s7 |9 k- ^5 X 七、附件
        oled.h
! F  [0 x0 v$ \6 h& e

1. #ifndef _OLED_H_
   
2. #define _OLED_H_
   1 }- V( W. r. M7 E5 E* p* L/ e8 `
3. /*
   
4. * for st7789 oled 模组
   
5. */
   
6. #define WIDTH                240
   . s) U0 n% t$ _! g
7. #define HEIGHT                240
   
8. #define BPP                16
   # |3 {0 Y0 @- `9 L3 U2 n- f
9. 
   
10. /* Init script function */
    9 f/ ?) z: f  v  I, b
11. struct OLED_function {
    
12.   uint8_t cmd;
    2 h  M, _8 D1 G; O, x8 G
13.   uint16_t data;
    
14. };
    
15. 
    0 s+ b: |) V0 D) g4 _9 E! }) F
16. /* Init script commands */
    
17. enum OLED_cmd {
    
18.   OLED_START,
    
19.   OLED_END,
    
20.   OLED_CMD,
    6 e+ Z* \* B  M
21.   OLED_DATA,
    # {, N( ~. E$ Q* Y, ~# R9 j
22.   OLED_DELAY
    ; w# J0 R3 R$ ^' F9 Z5 }
23. };
    
24. 
    
25. /************** 颜色(RGB 5,6,5) **************/
    # q2 t( o7 o" _6 p+ N. l! N
26. #define LCD_DISP_RED                    0xF800       //先高字节，后低字节
    
27. #define LCD_DISP_GREEN                  0x07E0
    + u1 G/ u6 }; {3 T9 z. M
28. #define LCD_DISP_BLUE                   0x001F
    , p" }( |' u  t( {0 Q- v
29. #define LCD_DISP_WRITE                  0xFFFF
    ( j9 E3 E3 c. @: w# e. U
30. #define LCD_DISP_BLACK                  0x0000
    / z7 n! m6 t2 Z
31. #define LCD_DISP_GRAY                   0xEF5D
    
32. #define LCD_DISP_GRAY75                 0x39E7
    
33. #define LCD_DISP_GRAY50                 0x7BEF
    % d: W7 P% t5 H- C1 B
34. #define LCD_DISP_GRAY25                 0xADB5
    . L3 Z' |$ C6 \1 {2 g5 t2 ]
35. 
    
36. /* oled Commands */
    
37. #define OLED_CASET        0x2A
    
38. #define OLED_RASET        0x2B
    1 V0 _, x$ X# P! C, W4 ?, A4 M
39. #define OLED_RAMWR        0x2C
    
40. #define OLED_RAMRD        0x2E
    # B$ @6 y9 R/ L% g' h" R7 Q
41. 
    
42. //对该位写1或0
    ) J# @( Y! u* v  z) h; G
43. #define Data_Cmd_State(__D_C_State__)        HAL_GPIO_WritePin(LCD_DCX_GPIO_Port, LCD_DCX_Pin, (GPIO_PinState)(__D_C_State__))
    
44. #define OLED_RST_State(__RST_State__)        HAL_GPIO_WritePin(LCD_RST_GPIO_Port, LCD_RST_Pin, (GPIO_PinState)(__RST_State__))
    
45. #define LCD_PWR_State(__PWR_State__)        HAL_GPIO_WritePin(LCD_PWR_GPIO_Port, LCD_PWR_Pin, (GPIO_PinState)(__PWR_State__))
    + g6 L8 h3 ]/ |# Q
46. 
    
47. int OLED_init();
    ( j, Z7 H/ m* D4 i
48. void LcdWriteReg(uint8_t Data);
    ( K' [7 P9 {( h0 l* G* ]
49. void LcdWriteData(uint8_t Data);
    3 Z* z0 K  |2 [# V0 f/ l1 f
50. void LcdWriteDataMultiple(uint8_t * pData, uint32_t NumItems);
    
51. 
    
52. void OLED_WritePixel(uint16_t Xpos, uint16_t Ypos, uint16_t RGBCode);
    ; p" C% r$ L! c2 Q
53. void OLED_WriteLine(uint16_t Xpos, uint16_t Ypos, uint16_t *RGBCode, uint16_t pointNum);
    # ?# b; i! u% Q# z1 ]/ }/ X6 s' h( x
54. 
    
55. void BSP_LCD_Clear(uint16_t Color);
    ; r7 H" P! G1 i/ G2 @2 x  D7 D
56. void BSP_LCD_Clear_DMA(uint16_t Color);
    5 h3 {# x  V6 N4 C3 W3 U; N  t
57. void OLED_printf (uint8_t xpos,uint8_t ypos,char *fmt, ...);
    : E8 C- b8 V9 z5 u  U
58. 
    ; G. M& T% u1 G& R8 k3 @) B7 p4 I& ^
59. #endif /* __oled_H */

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oled.c
7 t9 d5 c: v- t: L

1. #include "stm32l4xx_hal.h"
   ) d- t, V* D" \8 v
2. #include <stdio.h>
   ( l3 K' A" u! H/ z  [
3. #include <stdlib.h>
   
4. #include <string.h>
   
5. #include <stdarg.h>
   0 c$ K0 V, |4 `9 r; z
6. #include "main.h"
   5 o. s5 f1 c$ S1 j* ?7 w2 T
7. #include "ASCII.h"
   ) o# {, F$ B# {4 |
8. #include "oled.h"
   6 Y5 {0 [+ D( e1 A7 c! C( `; P
9. 
   
10. extern SPI_HandleTypeDef hspi1;
    
11. //初始化命令集
    * B3 T- ]. D: Q, F1 F
12. static struct OLED_function OLED_cfg_script[] = {
    
13.   {OLED_START, OLED_START},
    : W% v' k4 k) @+ ~1 w& G+ q5 g
14.   {OLED_CMD, 0x11},
    : y/ [3 b4 S8 l! [
15.   {OLED_DELAY, 120},
    
16.   {OLED_CMD, 0x36},
    " c$ R% u! X8 h7 o2 O: x" n4 j
17.   {OLED_DATA, 0x00},
    * d4 R4 H  L7 A& f0 _; v
18.   {OLED_CMD, 0x3a},
    
19.   {OLED_DATA, 0x65},
    
20.   {OLED_CMD, 0xb2},
    
21.   {OLED_DATA, 0x0c},
    
22.   {OLED_DATA, 0x0c},
    
23.   {OLED_DATA, 0x00},
    
24.   {OLED_DATA, 0x33},
    
25.   {OLED_DATA, 0x33},
    
26.   {OLED_CMD, 0xb7},
    ' @" \8 V0 _; P2 R
27.   {OLED_DATA, 0x72},
    
28.   {OLED_CMD, 0xbb},
    2 V9 u* ?% `5 [+ C4 Q! Z2 T
29.   {OLED_DATA, 0x3d},
    0 n4 M! v# ^  L
30.   {OLED_CMD, 0xc0},
    4 D" Z% ?1 y- T3 q
31.   {OLED_DATA, 0x2c},
    
32.   {OLED_CMD, 0xc2},
    
33.   {OLED_DATA, 0x01},
    $ \2 w( p$ ]% p4 Y, Y3 \
34.   {OLED_CMD, 0xc3},
    
35.   {OLED_DATA, 0x19},
    
36.   {OLED_CMD, 0xc4},
    ( ]4 {% u; ^# v0 _* F4 d
37.   {OLED_DATA, 0x20},
    
38.   {OLED_CMD, 0xc6},
    
39.   {OLED_DATA, 0x0f},
    
40.   {OLED_CMD, 0xd0},
    
41.   {OLED_DATA, 0xa4},
    2 j/ u/ `/ Z& u7 j! s7 G+ I: \: l
42.   {OLED_DATA, 0xa1},
      I* w2 ^0 D; P. Z6 B! C( O
43.   {OLED_CMD, 0xe0},
    
44.   {OLED_DATA, 0x70},
    
45.   {OLED_DATA, 0x04},
    . V6 u; \! f# Q
46.   {OLED_DATA, 0x08},
    
47.   {OLED_DATA, 0x09},
    8 m+ i0 p2 F" s
48.   {OLED_DATA, 0x09},
    
49.   {OLED_DATA, 0x05},
    ) R- T, G" G# k+ d2 ?
50.   {OLED_DATA, 0x2a},
    
51.   {OLED_DATA, 0x33},
    
52.   {OLED_DATA, 0x41},
    
53.   {OLED_DATA, 0x07},
    ( G; @3 c3 i9 [1 `! e! p+ ?* q
54.   {OLED_DATA, 0x13},
      F( ~) h, D4 z! e- Y
55.   {OLED_DATA, 0x13},
    " `9 y. [/ \/ |
56.   {OLED_DATA, 0x29},
    
57.   {OLED_DATA, 0x2f},
    
58.   {OLED_CMD, 0xe1},
    
59.   {OLED_DATA, 0x70},
    
60.   {OLED_DATA, 0x03},
    1 @* n, }$ |! p9 @3 x" G
61.   {OLED_DATA, 0x09},
    
62.   {OLED_DATA, 0x0a},
    
63.   {OLED_DATA, 0x09},
    
64.   {OLED_DATA, 0x06},
    0 E; ]" P) G' L$ y: O
65.   {OLED_DATA, 0x2b},
    : R# Q; p$ Y& J3 b% N
66.   {OLED_DATA, 0x34},
    
67.   {OLED_DATA, 0x41},
    0 l2 B$ R% ~# e9 E: S5 D
68.   {OLED_DATA, 0x07},
    
69.   {OLED_DATA, 0x12},
    
70.   {OLED_DATA, 0x14},
    ; k" B8 ?4 V+ b" i4 I  Y
71.   {OLED_DATA, 0x28},
    
72.   {OLED_DATA, 0x2e},
    
73.   {OLED_CMD, 0x21},
      L9 d5 m9 R6 }: g9 T5 S( p8 j
74.   {OLED_CMD, 0x29},
    
75.   {OLED_CMD, 0x2a},
    ; p% t2 k/ }, P
76.   {OLED_DATA, 0x00},
    
77.   {OLED_DATA, 0x00},
    
78.   {OLED_DATA, 0x00},
    
79.   {OLED_DATA, 0xef},
    7 \$ @5 J' |, ]. c" P
80.   {OLED_CMD, 0x2b},
    6 o$ x* `0 B$ Z! `$ R) [+ a# a; U' Z
81.   {OLED_DATA, 0x00},
    
82.   {OLED_DATA, 0x00},
    
83.   {OLED_DATA, 0x00},
    + l8 X! \" ^: B7 r+ c! N
84.   {OLED_DATA, 0xef},
    
85.   {OLED_CMD, 0x2c},
    
86.   {OLED_END, OLED_END},
    ( R: l! d2 j9 U# B  n5 H
87. };
    - Z( ~9 u0 a0 C8 |- E% E) i$ }7 N
88. 
    
89. static void OLED_run_cfg_script()
    5 ?, g1 G# l& S0 C9 d% W; W
90. {
    
91.           uint8_t data[2] = {0};
    9 k, K- H, l( _. ?  H( I
92.           int i = 0;
    : u) ~" _  j9 j" j" g7 i
93.           int end_script = 0;
    6 S. r% C+ P/ g1 u
94. 
    
95.           do {
    # k  |8 i5 a; H5 L% [( D0 N( ?+ t
96.             switch (OLED_cfg_script[i].cmd) {
    
97.             case OLED_START:
    
98.               break;
    
99.             case OLED_CMD:
    , `5 H6 V  V2 t& T9 S
100.               data[0] = OLED_cfg_script[i].data & 0xff;
     
101.               LcdWriteReg(data[0]);
     ; J1 W# q0 z* D; P  L4 q; k
102.               break;
     * n! m$ N. V- V( z
103.             case OLED_DATA:
     - z7 X* s* i8 ?9 t: y1 P
104.               data[0] = OLED_cfg_script[i].data & 0xff;
     
105.               LcdWriteData(data[0]);
     / U6 u$ {- Z! |2 {+ E) W& Y
106.               break;
     
107.             case OLED_DELAY:
     
108.               HAL_Delay(OLED_cfg_script[i].data);
     
109.               break;
     
110.             case OLED_END:
     9 K/ P( _: d3 W$ `$ ^( q+ m
111.               end_script = 1;
     4 D  j( D" \  B: ~0 L1 Z
112.             }
     # L6 _) V% b3 P; S
113.             i++;
     . V6 H) A0 y) j8 }- G/ |! c
114.           } while (!end_script);
     % z) q4 h: w1 G* r1 i% E) S
115. }
     6 Z6 M8 Y8 L' F& K% o; J
116. 
     7 b. T6 ^3 t  X1 a2 r  A' A
117. static void OLED_reset()
     
118. {
     , F8 @8 ?$ U1 E# r# v8 k+ V
119.           OLED_RST_State(0);
     % K  [- L4 N+ ?0 X
120.           HAL_Delay(200);
     ' t; O# C( K) U
121.           OLED_RST_State(1);
     $ ]  u6 X6 L$ {0 f
122.           HAL_Delay(150);
     6 y( W1 {! Z  ^( J% [- V7 m4 ^- e' {6 \
123. }
     2 B) r' d- O* y. O
124. 
     
125. #define LCD_MAX_MEM16_BLOCK             (1 << 6)
       k* h( l' U0 O1 o
126. #define LCD_PIXEL_PER_BLOCK             (LCD_MAX_MEM16_BLOCK >> 1)
     
127. 
     
128. static void spec_send_fb(uint16_t color, uint16_t pixel_num)
     0 }. |6 r6 d$ C/ e7 p& l
129. {
       F4 p" B- @, A! J4 t5 N
130.           uint16_t real_mem[LCD_MAX_MEM16_BLOCK] = {0};
     3 w/ g6 m9 ^- [0 ]
131. 
     ' s& W' T; p: T( \+ f7 u
132.           for (uint16_t i = 0; i < LCD_MAX_MEM16_BLOCK; ++i) {
     
133.                   real_mem[i] = color;
     
134.           }
     
135. //          HAL_GPIO_WritePin(LCD_DCX_GPIO_Port, LCD_DCX_Pin, GPIO_PIN_SET);
     : L% Z. Q. y# Y+ N8 B* F
136.           Data_Cmd_State(GPIO_PIN_SET);
     
137.           if (pixel_num <= LCD_MAX_MEM16_BLOCK) {
     
138.                   LcdWriteDataMultiple((uint8_t*)real_mem, pixel_num << 1);
     
139.           } else {
     
140.                   uint16_t count = pixel_num / LCD_MAX_MEM16_BLOCK;
     + r* A; J, `4 Z4 N+ D2 N
141.                   uint16_t remain = pixel_num % LCD_MAX_MEM16_BLOCK;
     ! x% T  U5 F# P* I" j7 p* _
142.                   for (uint16_t i = 0; i < count; ++i) {
     
143.                           LcdWriteDataMultiple((uint8_t*)real_mem, LCD_MAX_MEM16_BLOCK << 1);
     
144.                   }
     
145.                   LcdWriteDataMultiple((uint8_t*)real_mem, remain << 1);
     3 @  u, k$ {& r, ^; {
146.           }
     
147. }
     8 v& |+ \3 I  y8 ?% C
148. 
     . x* G* c" L* S2 n: L, w
149. static void OLED_display_picture(void)
     
150. {
     6 h: `0 W1 v  E3 H" [0 g) l
151.   LcdWriteReg(OLED_RAMWR);
     
152.   spec_send_fb(0x0, WIDTH * HEIGHT / 4);
     
153.   spec_send_fb(0x1111, WIDTH * HEIGHT / 4);
     
154.   spec_send_fb(0x7777, WIDTH * HEIGHT / 4);
     / @+ @& d9 A3 t. V
155.   spec_send_fb(0xeeee, WIDTH * HEIGHT / 4);
     
156. }
     . T% o9 q) X6 \4 ~( v% d  p
157. 
     $ s$ L2 ~  p# |$ h! O; u
158. 
       l5 S8 e& m2 x' u# A, P
159. int OLED_init()
     1 b: y6 ^4 w. w# a" g( G
160. {
     * Y# U1 k! b# O0 I. V
161.           LCD_PWR_State(0);//回显关闭
     6 t" i+ r+ }5 n. d1 t3 `. t4 N
162.           OLED_reset();
     
163.           OLED_run_cfg_script();
     ' ~( c8 ^0 C* r  Q
164.           LCD_PWR_State(1);//回显开启
     
165.           OLED_display_picture();
     3 J( t) f( y2 l7 Z, I! W
166. 
     
167.           return HAL_OK;
     / X/ j7 O' T. n& z4 v( L$ W
168. }
     
169. 
     3 V, [# |9 p* k) c( R
170. void OLED_WriteReg(uint8_t Command, uint8_t *Parameters, uint8_t NbParameters)
     
171. {
     
172.           /* Send command */
     
173.           LcdWriteReg(Command);
     
174. 
     
175.           /* Send command's parameters if any */
     9 \' s9 J1 |  Q6 u, b
176.           for (uint8_t i=0; i<NbParameters; i++)
     , Z/ \2 c1 f  r+ u
177.           {
     
178.             LcdWriteData(Parameters[i]);
       j! k- Q/ k' {9 Z3 B
179.           }
     
180. }
     
181. 
     
182. static void LCD_Address_Set(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2)
     - m& e% u, S! ^! o( f2 ^
183. {
     
184.     /* 指定X方向操作区域 */
     " n0 [6 N9 B5 R
185.         LcdWriteReg(0x2a);
     . N* L! H3 s7 V4 `
186.         LcdWriteData(x1 >> 8);
     3 j) Q- f1 Q; P6 {. V9 J
187.         LcdWriteData(x1);
     ! h& e/ u$ y1 [0 @5 Z; X6 ~9 ~  [
188.         LcdWriteData(x2 >> 8);
     3 }1 J8 [2 S, z6 A. t! c, L- o9 w! u
189.         LcdWriteData(x2);
     
190. 
     , J1 o, ?6 `  d$ m7 s
191.     /* 指定Y方向操作区域 */
     0 v2 i) V: W1 k+ z
192.         LcdWriteReg(0x2b);
     
193.     LcdWriteData(y1 >> 8);
     
194.     LcdWriteData(y1);
     
195.     LcdWriteData(y2 >> 8);
     
196.     LcdWriteData(y2);
     
197. 
     
198.     /* 发送该命令，LCD开始等待接收显存数据 */
     
199.     LcdWriteReg(0x2C);
     
200. }
     
201. 
     
202. void OLED_SetCursor(uint16_t Xpos, uint16_t Ypos)
     
203. {
     ) b' U1 t6 Y; I% ?/ t. v: Q3 R
204.         LCD_Address_Set(Xpos,Ypos,WIDTH-1,Ypos);
     
205. }
     
206. 
     
207. void BSP_LCD_Clear(uint16_t Color)
     5 Y- \9 L7 L- R4 n6 x# ?
208. {
     ! p1 E3 e3 |7 y( y  o& o+ t
209.         uint8_t black_gui[480] = {0};
     
210.         memset(black_gui, Color, sizeof(black_gui));
     
211. 
     
212.         for (uint32_t counter = 0; counter < 240; counter++)
     
213.         {
     % E% y+ t' a1 F) I8 O2 V: T+ b' {; t
214.                 /* Set Cursor */
     + P8 ^/ n; \5 d3 k" L% |
215.                 OLED_SetCursor(0, counter);
     
216.                 /* Prepare to write to LCD RAM */
     
217.                 OLED_WriteReg(0x2C, (uint8_t*)NULL, 0);
     
218.                 /* RAM write data command */
     
219.                 LcdWriteDataMultiple(black_gui, 480);
     % S( m4 F5 o+ P; D( l
220.         }
     # g! G" d" X$ B0 G. U8 I. e
221. }
     
222. 
     % n: p' ?6 b# x% k0 \; W$ \
223. extern volatile uint8_t one_frame_done;
     4 S9 P1 h( X0 C! h3 c7 g
224. void BSP_LCD_Clear_DMA(uint16_t Color)
     
225. {
     
226.         uint8_t black_gui_DMA[WIDTH*HEIGHT*2] = {0X00};
     8 l/ f7 @& {1 U7 U4 V7 W1 J' l
227.         for(uint32_t i=0; i<WIDTH*HEIGHT; i++)
     
228.         {
     + T/ i8 ~2 J; T2 t0 A4 O% b/ s) a
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)
     
234.         one_frame_done = 0;
     9 C2 Z  v& @: t# Z
235.     /* 指定显存操作地址为全屏*/
     
236.     LCD_Address_Set(0, 0, WIDTH - 1, HEIGHT/2 - 1);
     5 C% B& ^, N" s$ Z+ ~& r
237.     Data_Cmd_State(1);/* 指定接下来的数据为数据 */
     & ~* X6 l% K, A! W
238.     /*DMA 写前半屏*/
     
239.     HAL_SPI_Transmit_DMA(&hspi1,black_gui_DMA, WIDTH*HEIGHT);
     * S- A" E) A% {2 R4 h
240.     while(!one_frame_done){/*release cpu and doing something else*/}
     
241.         one_frame_done = 0;
     # q4 @" N3 r# r/ N( @
242.     /* 指定显存操作地址为全屏*/
     % D4 S, A1 q, V4 c! {0 {
243.     LCD_Address_Set(0, HEIGHT/2, WIDTH - 1, HEIGHT - 1);
     $ {' \" ~0 \0 z$ I6 g! v# z
244.     Data_Cmd_State(1);/* 指定接下来的数据为数据 */
     ) \, m. [" N8 R" n+ h8 W* L
245.     /*DMA 写后半屏*/
     
246.     HAL_SPI_Transmit_DMA(&hspi1,black_gui_DMA+WIDTH*HEIGHT, WIDTH*HEIGHT);
     5 h) w; ]9 E9 r: {
247.     while(!one_frame_done){/*release cpu and doing something else*/}
     ; O, J2 w% _/ o1 n* U" Q- L$ O
248. }
     
249. 
     0 j$ D2 N3 N( Y8 \1 u# V. w! A# U
250. //显示英文与数字8*16的ASCII码
     2 s. n% X' F( ?/ B0 U& K2 v7 T9 W7 z
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);
     
253.         uint16_t color = 0;
     ) |+ X" B/ n8 K- p( v
254.         uint16_t textData[16][8]={0};
     
255. //        uint8_t buffer[16][8]={0};
     & _4 g1 D8 c( s' d
256.         for(uint8_t i=0; i<16; i++)
     . |" R  k) X9 C; X5 [) k
257.         {
     
258.                 uint16_t buf=ASCII_8x16[(w*16)+i-512];
     
259. //                printf("0X%02X ",buf);
       G/ S) n4 h5 @7 J, M
260.                 for(uint8_t j=0;j<8;j++){
     
261. //                        printf("%d ",(0x01&(buf>>j))>0?0x01:0x00);
     
262. //                        buffer[8*(i/8)+j][i%8]=(0x01&(buf>>j))>0?1:0;
     8 N. ]+ |' ]- J" m$ e9 H
263.                         color = (0x01&(buf>>j))>0?LCD_DISP_BLACK:LCD_DISP_BLUE;
     % o$ }% Z$ s1 m$ R; v3 C
264.                         textData[8*(i/8)+j][i%8] = color;
     2 s/ [9 w4 g/ ], B
265. //                        OLED_WritePixel(x+i%8,y+8*(i/8)+j,color);//单像素渲染
     
266.                 }
     8 F+ X- n& X5 Y# K8 G# V9 e
267. //                printf("\r\n");
     
268.         }
     5 }1 F- g8 L! z5 l' R
269.         for(uint8_t i=0; i<16; i++)
     
270.         {
     
271.                 OLED_WriteLine(x,y+i,textData[i],8);//列像素渲染
     + H+ D. E" C2 e/ C& d' y6 E3 J) m
272. //                for(uint8_t j=0;j<8;j++){
     
273. //                        printf("%d",buffer[i][j]);
     
274. //                }
       T: W' _0 c# Y  ~8 o
275. //                printf("\r\n");
     
276.         }
     
277. }
     
278. 
     1 n, C/ I# S- f: z
279. //用于OLED_printf函数专用的显示程序
     " n5 u$ m; T+ E( q
280. void OLED_printf_US(uint8_t xpos,uint8_t ypos,uint8_t *str,uint8_t i){
     
281.         uint8_t r=0;
     
282.         while(i != r){//i是长度值，当显示到i之后退出
     # r* }4 n% S( s/ ~
283.                 OLED_DISPLAY_8x16(xpos+r*8,ypos,*str++);//显示英文与数字8*16的ASCII码
     6 D5 F) G1 |( |; V
284.                 r++;
     
285.     }
     
286. }
     / n( L  E, K" F# m" r
287. //OLED专用的printf函数
     
288. //调用方法：OLED_printf(0,0,"123");
     " Y3 H7 c4 n) _3 c4 x6 ~
289. //注意若xpos或ypos过大，并内容较多时，会出现溢出边界
     * j4 t6 f" i6 {
290. #define line_size 29
     
291. #define row_size 16
     
292. void OLED_printf (uint8_t xpos,uint8_t ypos,char *fmt, ...)
     ( y+ ]7 X$ ]% K7 E2 w; x
293. {
     ) e' ^- o# R4 h& V7 a5 t0 Q6 O" W3 z
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
     
295.     uint16_t size=0;
     
296.     uint16_t row = 1+strlen(fmt)/line_size;//暂时没考虑自带换行符号情况
     
297. //    printf("row=%d\r\n",row);
     
298.     for(uint16_t i=0;i<row;i++){
       e8 y' w5 ]: Y# @7 W$ @  V
299.         va_list arg_ptr;
     % j3 a" k; V; o1 T
300.         va_start(arg_ptr,fmt);
     : n- k& X! Y: y) m4 |- d! d
301.         vsnprintf(buff, line_size,fmt+i*line_size,arg_ptr);//数据转换
     ) I. x4 B) b. _9 A
302.         size=strlen(buff);                                        //得出数据长度
     
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）
     + ]/ _7 h2 J2 g0 Q% I) Y
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
     
305.         va_end(arg_ptr);
     * m9 f* Y0 S" E& a
306.     }
     
307. }
     
308. 
     
309. void OLED_WritePixel(uint16_t Xpos, uint16_t Ypos, uint16_t data)
     & Y$ z$ L" L! k; ?' A" T8 x+ j  o
310. {
     
311.           uint8_t dataB = 0;
     
312. 
     
313.           /* Set Cursor */
     . b; B% X# g' X5 l1 H9 T
314.           OLED_SetCursor(Xpos, Ypos);
     1 t4 `0 {" s% Y
315. 
     
316.           /* Prepare to write to LCD RAM */
     0 _$ h6 B' B0 I4 M) i- M% g
317.           OLED_WriteReg(0x2C, (uint8_t*)NULL, 0);   /* RAM write data command */
     4 H: O2 E" M$ ]
318. 
     3 _+ C/ A2 Y- _! p; H9 R/ v
319.           /* Write RAM data */
     " M! i9 R* c5 S+ R2 f  W
320.           dataB = (uint8_t)(data >> 8);
     
321.           LcdWriteData(dataB);
     
322.           dataB = (uint8_t)data;
     3 y0 k, k  u; C  a$ @3 @8 x) }
323.           LcdWriteData(dataB);
     
324. }
     " y/ f7 [+ C- y( O4 N: n6 h* ?$ {% c' v% Q
325. 
     
326. uint8_t endian_buffer[480];
     
327. 
     2 o! {" N5 Y4 z1 W" o  \
328. void OLED_WriteLine(uint16_t Xpos, uint16_t Ypos, uint16_t *RGBCode, uint16_t pointNum)
     
329. {
     - d9 I& c( _! X+ v. Z$ U$ Q
330.           /* Set Cursor */
     : n, X  B3 W# h& [
331.           OLED_SetCursor(Xpos, Ypos);
     3 A/ r( d! q1 H2 c4 D
332. 
     ( ?; ]! `4 B, b" H; q
333.           /* Prepare to write to LCD RAM */
     
334.           OLED_WriteReg(0x2C, (uint8_t*)NULL, 0);   /* RAM write data command */
     
335. 
     + `: M8 B; p$ ?/ t
336.           for (uint16_t i = 0; i < pointNum; i++) {
     
337.             endian_buffer[2*i] = (uint8_t)(RGBCode[i] >> 8);
     
338.             endian_buffer[2*i + 1] = (uint8_t)RGBCode[i];
     5 \! u! D' w! p! s2 o' C( {4 ?
339.           }
     
340. 
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341.           /* Write RAM data */
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342.           LcdWriteDataMultiple(endian_buffer, pointNum*2);
     
343. }
     
344. 
     
345. /********************************************************************
     
346. *
     
347. *   LcdWriteReg
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348. *
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349. *         Function description:
     
350. *   Sets display register
     
351. */
     
352. void LcdWriteReg(uint8_t Data)
     
353. {
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354.           Data_Cmd_State(0);
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355.           HAL_SPI_Transmit(&hspi1, &Data, 1, 10);
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356. }
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357. 
     
358. /********************************************************************
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359. *
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360. *          LcdWriteData
     
361. *
     
362. *         Function description:
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363. *   Writes a value to a display register
     
364. */
     
365. void LcdWriteData(uint8_t Data)
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366. {
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367.           Data_Cmd_State(1);
     
368.           HAL_SPI_Transmit(&hspi1, &Data, 1, 10);
     
369. }
     
370. 
     
371. /********************************************************************
     
372. *
     
373. *        LcdWriteDataMultiple
     
374. *
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375. *         Function description:
     
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);
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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 */
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2. /* Includes ------------------------------------------------------------------*/
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3. #include "main.h"
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4. #include "dcmi.h"
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5. #include "dma.h"
   
6. #include "i2c.h"
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7. #include "usart.h"
   
8. #include "spi.h"
   
9. #include "gpio.h"
   
10. 
    
11. /* Private includes ----------------------------------------------------------*/
    
12. /* USER CODE BEGIN Includes */
    
13. #include "../../ICore/key/key.h"
    + k8 y  z# ~4 n; A' {
14. #include "../../ICore/led/led.h"
    
15. #include "../../ICore/print/print.h"
    
16. #include "../../ICore/usart/usart.h"
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17. #include "../../ICore/oled/oled.h"
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18. /* USER CODE END Includes */
    
19. 
    
20. /* Private typedef -----------------------------------------------------------*/
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21. /* USER CODE BEGIN PTD */
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22. 
    
23. /* USER CODE END PTD */
    
24. 
    
25. /* Private define ------------------------------------------------------------*/
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26. /* USER CODE BEGIN PD */
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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. 
    ) l+ B+ a4 @& T% I7 r, z9 t
32. /* USER CODE END PM */
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33. 
    
34. /* Private variables ---------------------------------------------------------*/
    
35. 
    
36. /* USER CODE BEGIN PV */
    
37. 
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38. /* USER CODE END PV */
    
39. 
    % ]6 W/ G% R' C
40. /* Private function prototypes -----------------------------------------------*/
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41. void SystemClock_Config(void);
    ! T& E/ Q8 T- ^8 J" c5 T8 z+ e/ @9 T& }
42. /* USER CODE BEGIN PFP */
    
43. 
    & `! i( K- O5 q8 Q# C% s$ k6 r
44. /* USER CODE END PFP */
    
45. 
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46. /* Private user code ---------------------------------------------------------*/
    ) ~$ U" Q* ?, [/ i3 [+ R& d# ^6 u* ?
47. /* USER CODE BEGIN 0 */
    
48. //volatile uint8_t data1[LCD_RAM_SIZE];
    
49. //volatile uint8_t data2[LCD_RAM_SIZE];
    
50. //extern volatile uint8_t one_frame_done;
    % H" r# T5 M4 a! a  o/ w" j# @
51. /* USER CODE END 0 */
    ; Q8 j3 {. J  c# l) W# \1 Y, n
52. 
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53. /**
    
54.   * @brief  The application entry point.
    
55.   * @retval int
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56.   */
    
57. int main(void)
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58. {
    ) ]' W6 @0 R: {2 _5 N
59.   /* USER CODE BEGIN 1 */
    
60. 
    
61.   /* USER CODE END 1 */
    
62. 
    * V3 A- ~) |1 y4 a. v
63.   /* MCU Configuration--------------------------------------------------------*/
    
64. 
    
65.   /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
    % B0 f% I! O( z+ }! k6 X
66.   HAL_Init();
    * p; B$ F8 S8 ]+ f9 ?
67. 
    4 W# P! I) U1 o. u/ G% ^) Y6 q
68.   /* USER CODE BEGIN Init */
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69. 
    
70.   /* USER CODE END Init */
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71. 
    
72.   /* Configure the system clock */
    
73.   SystemClock_Config();
    % p0 L9 L1 H! w2 k5 D
74. 
    
75.   /* USER CODE BEGIN SysInit */
    
76. 
    
77.   /* USER CODE END SysInit */
    ' R. r: T! a5 Z
78. 
    
79.   /* Initialize all configured peripherals */
    4 n" f; y; m/ K7 O; ]+ U
80.   MX_GPIO_Init();
    
81.   MX_DMA_Init();
    
82.   MX_LPUART1_UART_Init();
    
83.   MX_SPI1_Init();
    $ F5 t# J6 g% c9 G
84.   /* USER CODE BEGIN 2 */
    
85.   ResetPrintInit(&hlpuart1);
    
86.   HAL_UART_Receive_IT(&hlpuart1,(uint8_t *)&HLPUSART_NewData, 1); //再开启接收中断
    $ L# u7 h$ w( Q# k
87.   HLPUSART_RX_STA = 0;
    
88.   OLED_init();
    
89.   //
    
90.   set_led0_val(0);
    
91.   set_led1_val(get_key0_val());
    
92.   /* USER CODE END 2 */
    
93. 
    3 W. x2 M7 o0 B2 k7 ^$ c
94.   /* Infinite loop */
    ' `0 l6 J; C( c( w, F) e
95.   /* USER CODE BEGIN WHILE */
      V  F" R; ~& i
96.   while (1)
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97.   {
    1 R. i: u6 Q( ~+ A
98.           if(HLPUSART_RX_STA&0xC000){//溢出或换行，重新开始
    8 N" c  @( J& `- s
99.                   OLED_printf(10,10,"%.*s",HLPUSART_RX_STA&0X0FFF, HLPUSART_RX_BUF);
    6 `. s# g/ v5 v- W& J8 |7 n2 t4 J
100.                   HLPUSART_RX_STA=0;//接收错误,重新开始
     
101.                   HAL_Delay(100);//等待
     9 ?* v4 p, j4 V) r* x
102.           }
     5 r% U& e& q# `
103.           if(KEY_0())
     
104.           {
     8 o9 {4 z" p: S. `# q1 O5 `5 T
105.                   OLED_printf(10,10,"hello world to stm32!I am an embedded enthusiast.");
     
106.                   OLED_printf(10,48,"  STM32CubeIDE is an advanced C/C++ development platform "
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107.                                   "with peripheral configuration, code generation, code compilation, "
     
108.                                   "and debug features for STM32 micro controllers and microprocessors.");
     
109. //                  OLED_printf(10,10,"!");
     ' O! U5 v. ]0 _4 l1 B$ H
110.           }
     
111.           if(KEY_1())
     ) m* _4 k: Z$ X9 F4 M& S: Q" W6 W
112.           {
     
113.                   BSP_LCD_Clear(0xF800);
     * R0 e/ O2 c8 t% A
114.                   printf("OLED_Clear\r\n");
     
115.           }
     ' l. ]& X5 n7 i2 R) T
116.           if(KEY_2())
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117.           {
     ' z9 c* d( j* r- }9 i, k
118.                   BSP_LCD_Clear_DMA(LCD_DISP_BLUE);
     
119.                   printf("OLED_Clear_DMA\r\n");
     
120.           }
     
121.         Toggle_led0();
     
122.     /* USER CODE END WHILE */
     % ], y; R- @* z9 E6 F. T
123. 
     
124.     /* USER CODE BEGIN 3 */
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125.   }
     + v; ?  C2 y* W2 S, q$ c! Y
126.   /* USER CODE END 3 */
     
127. }

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