一、SPI 通信技术
# a* _! B$ ?3 j8 h* o- \; ~        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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# V; A4 @8 N- s3 p3 Y, Q        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）。

（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；

（3）SCLK – Serial Clock，时钟信号，由主设备产生；
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8 H- s0 s! w4 R( x: @$ Y（4）CS – Chip Select，从设备使能信号，由主设备控制。
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        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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二、SPI通信参配
# {& A& I" U5 a        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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         LCD 显示屏针脚定义：

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4 o3 Y4 o& r+ p+ E1 w; ?         MCU连接LCD的芯片引脚定义如下：
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- @! M1 o8 j; O3 c         各个引脚的具体参数：


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& [; @2 B7 h! w! Q 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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        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：

6 W  G% u' Q: D8 B6 m8 r2 y        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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+ O: t, @) L" w6 p; {* }5 T7 [# c         2）添加SPI1的DMA支持
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         3）开启spi1的中断功能


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         4）设置oled屏控制的辅助引脚、设置名称及调整配置参数



* `, q9 Q6 O* p& f: \; x. O. L& P         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
- y; D# x0 B# a+ i2 \- c' f        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
        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__))
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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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' H- |" z! i7 `        2）spi1写入数据实现
  i4 V1 R2 U: y4 ]        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. /********************************************************************
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2. *
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3. *   LcdWriteReg
   
4. *
   
5. *         Function description:
   
6. *   Sets display register
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7. */
   
8. void LcdWriteReg(uint8_t Data)
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9. {
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10.           Data_Cmd_State(0);
    
11.           HAL_SPI_Transmit(&hspi1, &Data, 1, 10);
    
12. }
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13. 
    
14. /********************************************************************
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15. *
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16. *          LcdWriteData
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17. *
    
18. *         Function description:
    
19. *   Writes a value to a display register
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20. */
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21. void LcdWriteData(uint8_t Data)
    
22. {
    
23.           Data_Cmd_State(1);
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24.           HAL_SPI_Transmit(&hspi1, &Data, 1, 10);
    
25. }
    
26. 
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27. /********************************************************************
    
28. *
    
29. *        LcdWriteDataMultiple
    
30. *
    
31. *         Function description:
    
32. *   Writes multiple values to a display register.
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33. */
    
34. void LcdWriteDataMultiple(uint8_t * pData, uint32_t NumItems)
    
35. {
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36.           Data_Cmd_State(1);
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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
        定义OLED屏的初始化指令集及指令设置函数

1. /* Init script function */
   
2. struct OLED_function {
   
3.   uint8_t cmd;
   
4.   uint16_t data;
   
5. };
   
6. 
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7. /* Init script commands */
   
8. enum OLED_cmd {
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9.   OLED_START,
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10.   OLED_END,
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11.   OLED_CMD,
    
12.   OLED_DATA,
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13.   OLED_DELAY
    
14. };
    
15. //以上可放置头文件中
    
16. //以下放置源文件中
    
17. //初始化命令集
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18. static struct OLED_function OLED_cfg_script[] = {
    
19.   {OLED_START, OLED_START},
    
20.   {OLED_CMD, 0x11},
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21.   {OLED_DELAY, 120},
    
22.   {OLED_CMD, 0x36},
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23.   {OLED_DATA, 0x00},
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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},
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30.   {OLED_DATA, 0x33},
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31.   {OLED_DATA, 0x33},
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32.   {OLED_CMD, 0xb7},
    
33.   {OLED_DATA, 0x72},
    
34.   {OLED_CMD, 0xbb},
    
35.   {OLED_DATA, 0x3d},
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36.   {OLED_CMD, 0xc0},
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37.   {OLED_DATA, 0x2c},
    
38.   {OLED_CMD, 0xc2},
    
39.   {OLED_DATA, 0x01},
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40.   {OLED_CMD, 0xc3},
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41.   {OLED_DATA, 0x19},
    
42.   {OLED_CMD, 0xc4},
    
43.   {OLED_DATA, 0x20},
    
44.   {OLED_CMD, 0xc6},
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45.   {OLED_DATA, 0x0f},
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46.   {OLED_CMD, 0xd0},
    
47.   {OLED_DATA, 0xa4},
    
48.   {OLED_DATA, 0xa1},
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49.   {OLED_CMD, 0xe0},
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50.   {OLED_DATA, 0x70},
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51.   {OLED_DATA, 0x04},
    
52.   {OLED_DATA, 0x08},
    
53.   {OLED_DATA, 0x09},
    
54.   {OLED_DATA, 0x09},
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55.   {OLED_DATA, 0x05},
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56.   {OLED_DATA, 0x2a},
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57.   {OLED_DATA, 0x33},
    
58.   {OLED_DATA, 0x41},
    
59.   {OLED_DATA, 0x07},
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60.   {OLED_DATA, 0x13},
    
61.   {OLED_DATA, 0x13},
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62.   {OLED_DATA, 0x29},
    
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},
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69.   {OLED_DATA, 0x09},
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70.   {OLED_DATA, 0x06},
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71.   {OLED_DATA, 0x2b},
    
72.   {OLED_DATA, 0x34},
    
73.   {OLED_DATA, 0x41},
    
74.   {OLED_DATA, 0x07},
    
75.   {OLED_DATA, 0x12},
    
76.   {OLED_DATA, 0x14},
    
77.   {OLED_DATA, 0x28},
    
78.   {OLED_DATA, 0x2e},
    
79.   {OLED_CMD, 0x21},
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80.   {OLED_CMD, 0x29},
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81.   {OLED_CMD, 0x2a},
    
82.   {OLED_DATA, 0x00},
    
83.   {OLED_DATA, 0x00},
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84.   {OLED_DATA, 0x00},
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85.   {OLED_DATA, 0xef},
    
86.   {OLED_CMD, 0x2b},
    
87.   {OLED_DATA, 0x00},
    
88.   {OLED_DATA, 0x00},
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89.   {OLED_DATA, 0x00},
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90.   {OLED_DATA, 0xef},
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91.   {OLED_CMD, 0x2c},
    
92.   {OLED_END, OLED_END},
    
93. };
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94. 
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95. static void OLED_run_cfg_script()
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96. {
    
97.           uint8_t data[2] = {0};
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98.           int i = 0;
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99.           int end_script = 0;
    
100. 
     
101.           do {
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102.             switch (OLED_cfg_script[i].cmd) {
     
103.             case OLED_START:
     
104.               break;
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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:
     
110.               data[0] = OLED_cfg_script[i].data & 0xff;
     
111.               LcdWriteData(data[0]);
     
112.               break;
     
113.             case OLED_DELAY:
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114.               HAL_Delay(OLED_cfg_script[i].data);
     
115.               break;
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116.             case OLED_END:
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117.               end_script = 1;
     
118.             }
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119.             i++;
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120.           } while (!end_script);
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121. }

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8 k  o/ _1 n6 w2 c% n        4）oled初始化
        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()
   
3. {
   
4.           OLED_RST_State(0);
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5.           HAL_Delay(200);
   
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()
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11. {
    
12.           LCD_PWR_State(0);//回显关闭
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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;
    
19. }

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& i% ]- l! c$ T- ~5 L4 V5 U        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. 
   
8.           for (uint16_t i = 0; i < LCD_MAX_MEM16_BLOCK; ++i) {
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9.                   real_mem[i] = color;
   
10.           }
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11.           Data_Cmd_State(GPIO_PIN_SET);
    
12.           if (pixel_num <= LCD_MAX_MEM16_BLOCK) {
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13.                   LcdWriteDataMultiple((uint8_t*)real_mem, pixel_num << 1);
    
14.           } else {
    
15.                   uint16_t count = pixel_num / LCD_MAX_MEM16_BLOCK;
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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.           }
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22. }
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23. 
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24. static void OLED_display_picture(void)
    
25. {
    
26.   LcdWriteReg(OLED_RAMWR);
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27.   spec_send_fb(0x0, WIDTH * HEIGHT / 4);
    
28.   spec_send_fb(0x1111, WIDTH * HEIGHT / 4);
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29.   spec_send_fb(0x7777, WIDTH * HEIGHT / 4);
    
30.   spec_send_fb(0xeeee, WIDTH * HEIGHT / 4);
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31. }

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      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 */
   
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"
   
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;
    
13.   OLED_init();
    
14. 
    
15.   set_led0_val(0);
    
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.   {
    
21.     Toggle_led0();
    
22.     /* USER CODE END WHILE */

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, _" [; g0 E2 j1 G8 v        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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1 J, M! ~. l3 l! R 五、屏幕输出字符串设计
        【1】字符串编码表
/ W0 B" N! |: v9 u2 }" p/ c$ X6 W        在ICore/oled目下字符串编码表ASCII.h，具体如下：
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1. /*
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2. * ASCII.h
   
3. *
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4. *  Created on: Jun 11, 2022
   
5. *      Author: Administrator
   
6. */
   
7. 
   
8. #ifndef OLED_ASCII_H_
   8 t5 Z- v* U" l! g& [; g( c
9. #define OLED_ASCII_H_
   
10. 
    3 J/ l; k7 g6 o$ r8 w3 V
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）
      ~& L  i; y7 K2 q( L
14. // -------------------------------------------------------------- //
    
15. const uint8_t ASCII_8x16[] =  {            // ASCII
    ) {" X- o2 N" G2 K  @9 i
16.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,  // - -
    
17.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    + L/ B: m# A3 `* R
18. 
    % g$ S6 a- D3 m& @- Q* g
19.         0x00,0x00,0x38,0xFC,0xFC,0x38,0x00,0x00,  // -!-
    
20.         0x00,0x00,0x00,0x0D,0x0D,0x00,0x00,0x00,
    
21. 
    2 c8 m& Q. K. n
22.         0x00,0x0E,0x1E,0x00,0x00,0x1E,0x0E,0x00,  // -"-
    
23.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    1 Z1 ?# E& |* l
24. 
    + i# O* \# d) A! C4 h9 @# F
25.         0x20,0xF8,0xF8,0x20,0xF8,0xF8,0x20,0x00,  // -#-
    
26.         0x02,0x0F,0x0F,0x02,0x0F,0x0F,0x02,0x00,
    
27. 
    
28.         0x38,0x7C,0x44,0x47,0x47,0xCC,0x98,0x00,  // -$-
    : A* \/ Y8 T, h9 y9 _. y
29.         0x03,0x06,0x04,0x1C,0x1C,0x07,0x03,0x00,
    - ~+ |# l# N1 F1 U1 X& @
30. 
    
31.         0x30,0x30,0x00,0x80,0xC0,0x60,0x30,0x00,  // -%-
    1 S2 P: g0 M; y4 u4 I
32.         0x0C,0x06,0x03,0x01,0x00,0x0C,0x0C,0x00,
    5 e3 q: n' b( C8 U3 ?) C
33. 
    4 K) H& Q  Z- K7 g: `! C
34.         0x80,0xD8,0x7C,0xE4,0xBC,0xD8,0x40,0x00,  // -&-
    
35.         0x07,0x0F,0x08,0x08,0x07,0x0F,0x08,0x00,
    
36. 
    2 B3 X* G/ p" _; b* g! i9 ?% R7 y
37.         0x00,0x10,0x1E,0x0E,0x00,0x00,0x00,0x00,  // -'-
    
38.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    
39. 
    4 l0 X  w' S2 W2 G( C+ Y; L0 ]1 h
40.         0x00,0x00,0xF0,0xF8,0x0C,0x04,0x00,0x00,  // -(-
    
41.         0x00,0x00,0x03,0x07,0x0C,0x08,0x00,0x00,
    " E" z# R$ t6 H8 h( L( B# f1 }
42. 
    5 E  _# E* X9 j2 J/ u! T
43.         0x00,0x00,0x04,0x0C,0xF8,0xF0,0x00,0x00,  // -)-
    . D' g, y  v1 J2 L. @
44.         0x00,0x00,0x08,0x0C,0x07,0x03,0x00,0x00,
    
45. 
    ; d* [, W2 o3 Z$ `  ~
46.         0x80,0xA0,0xE0,0xC0,0xC0,0xE0,0xA0,0x80,  // -*-
    3 `3 N, [* g) ~" A8 `+ J
47.         0x00,0x02,0x03,0x01,0x01,0x03,0x02,0x00,
    
48. 
    
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,  // -,-
    3 b  E* o- [! f( X
53.         0x00,0x00,0x10,0x1E,0x0E,0x00,0x00,0x00,
    
54. 
    
55.         0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x00,  // ---
    
56.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    % L- b- S  p8 J+ m9 g5 z7 m
57. 
    " Q5 ?  ]7 c% L$ f
58.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,  // -.-
    
59.         0x00,0x00,0x00,0x0C,0x0C,0x00,0x00,0x00,
    ; _' l$ z- r$ Q& ]. c7 Q2 K4 v
60. 
    
61.         0x00,0x00,0x00,0x80,0xC0,0x60,0x30,0x00,  // -/-
    . s0 w4 L( a: Z' J% _
62.         0x0C,0x06,0x03,0x01,0x00,0x00,0x00,0x00,
    
63. 
    
64.         0xF8,0xFC,0x04,0xC4,0x24,0xFC,0xF8,0x00,  // -0-
    0 _0 e0 r" D8 e$ p+ R, B
65.         0x07,0x0F,0x09,0x08,0x08,0x0F,0x07,0x00,
    
66. 
    
67.         0x00,0x10,0x18,0xFC,0xFC,0x00,0x00,0x00,  // -1-
    0 g( I! k1 t& X( Y* q0 \* a
68.         0x00,0x08,0x08,0x0F,0x0F,0x08,0x08,0x00,
    
69. 
    ( a0 R$ }7 e4 ^1 {& E4 z
70.         0x08,0x0C,0x84,0xC4,0x64,0x3C,0x18,0x00,  // -2-
    / X: w: o( O5 X; |2 n2 V* u
71.         0x0E,0x0F,0x09,0x08,0x08,0x0C,0x0C,0x00,
    
72. 
    : h5 o0 I. l8 r+ v; |
73.         0x08,0x0C,0x44,0x44,0x44,0xFC,0xB8,0x00,  // -3-
    8 L4 F# I: m; N9 P3 r  A
74.         0x04,0x0C,0x08,0x08,0x08,0x0F,0x07,0x00,
    , c% f1 u- w( k* H
75. 
    
76.         0xC0,0xE0,0xB0,0x98,0xFC,0xFC,0x80,0x00,  // -4-
    * _, m2 a. F5 r0 b+ h0 _) F1 a
77.         0x00,0x00,0x00,0x08,0x0F,0x0F,0x08,0x00,
    
78. 
    7 w- k( ~+ M: g# M3 ]/ L
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-
    
83.         0x07,0x0F,0x08,0x08,0x08,0x0F,0x07,0x00,
    
84. 
    5 @- A( ]% [0 ]  ?! m' C. q8 X
85.         0x0C,0x0C,0x04,0x84,0xC4,0x7C,0x3C,0x00,  // -7-
    ( J: F9 e  `+ Y2 a# _. s. s% w% C
86.         0x00,0x00,0x0F,0x0F,0x00,0x00,0x00,0x00,
    ' l) H% l5 o) z7 q/ l" J
87. 
    
88.         0xB8,0xFC,0x44,0x44,0x44,0xFC,0xB8,0x00,  // -8-
    
89.         0x07,0x0F,0x08,0x08,0x08,0x0F,0x07,0x00,
    ) \: V: j: D* B1 R
90. 
    
91.         0x38,0x7C,0x44,0x44,0x44,0xFC,0xF8,0x00,  // -9-
    
92.         0x00,0x08,0x08,0x08,0x0C,0x07,0x03,0x00,
    
93. 
    4 M. @# v+ W5 q
94.         0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00,  // -:-
    ( L- [$ b% t$ X% M: h# r
95.         0x00,0x00,0x00,0x06,0x06,0x00,0x00,0x00,
    
96. 
    ! n% D% Y+ d! a% c6 d" s; f
97.         0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00,  // -;-
    & E6 o! L+ P/ u3 X- V
98.         0x00,0x00,0x08,0x0E,0x06,0x00,0x00,0x00,
    
99. 
    7 V1 X# B& e, q; j8 q0 k- c: s
100.         0x00,0x80,0xC0,0x60,0x30,0x18,0x08,0x00,  // -<-
     % w% }- O, g9 G5 Y$ r
101.         0x00,0x00,0x01,0x03,0x06,0x0C,0x08,0x00,
     4 E, _" {1 D9 Y2 Z5 U
102. 
     
103.         0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x00,  // -=-
     - `3 W7 U1 y; E! X9 ]3 ^& z
104.         0x02,0x02,0x02,0x02,0x02,0x02,0x02,0x00,
     7 P3 e! S& l9 `: k
105. 
     
106.         0x00,0x08,0x18,0x30,0x60,0xC0,0x80,0x00,  // ->-
     
107.         0x00,0x08,0x0C,0x06,0x03,0x01,0x00,0x00,
     ; z' A. U9 x- d+ [
108. 
     
109.         0x18,0x1C,0x04,0xC4,0xE4,0x3C,0x18,0x00,  // -?-
     4 n8 w2 Z9 }  A
110.         0x00,0x00,0x00,0x0D,0x0D,0x00,0x00,0x00,
     6 c4 G1 u/ R! o# P
111. 
     # D' l: {9 b# \' o* y" E9 v
112.         0xF0,0xF8,0x08,0xC8,0xC8,0xF8,0xF0,0x00,  // -@-
     
113.         0x07,0x0F,0x08,0x0B,0x0B,0x0B,0x01,0x00,
     
114. 
     1 o6 g) j- f- ^! A" {
115.         0xE0,0xF0,0x98,0x8C,0x98,0xF0,0xE0,0x00,  // -A-
     4 K) O/ `% |' m/ S! b4 Y- b$ j7 i
116.         0x0F,0x0F,0x00,0x00,0x00,0x0F,0x0F,0x00,
     
117. 
     3 p% F* X4 R: _, r5 E# E: e7 y
118.         0x04,0xFC,0xFC,0x44,0x44,0xFC,0xB8,0x00,  // -B-
     
119.         0x08,0x0F,0x0F,0x08,0x08,0x0F,0x07,0x00,
     
120. 
     
121.         0xF0,0xF8,0x0C,0x04,0x04,0x0C,0x18,0x00,  // -C-
     
122.         0x03,0x07,0x0C,0x08,0x08,0x0C,0x06,0x00,
     6 k2 s, }; o6 F. H% `- F5 e3 q
123. 
     
124.         0x04,0xFC,0xFC,0x04,0x0C,0xF8,0xF0,0x00,  // -D-
     
125.         0x08,0x0F,0x0F,0x08,0x0C,0x07,0x03,0x00,
     : U  N; L+ b6 w0 ?
126. 
     7 t5 z0 j2 \( w  a- t3 W
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-
     9 H( e8 S* D+ a. O! r+ ]5 b* A
131.         0x08,0x0F,0x0F,0x08,0x00,0x00,0x00,0x00,
     
132. 
     0 j% V, N( p1 X# h) L: d
133.         0xF0,0xF8,0x0C,0x84,0x84,0x8C,0x98,0x00,  // -G-
     
134.         0x03,0x07,0x0C,0x08,0x08,0x07,0x0F,0x00,
     5 ?7 |; \5 ?0 X7 b
135. 
     
136.         0xFC,0xFC,0x40,0x40,0x40,0xFC,0xFC,0x00,  // -H-
     
137.         0x0F,0x0F,0x00,0x00,0x00,0x0F,0x0F,0x00,
       K' l, w3 _) Y2 A
138. 
     : N7 [: C* Q4 X  q
139.         0x00,0x00,0x04,0xFC,0xFC,0x04,0x00,0x00,  // -I-
     9 `4 @  _, y6 C7 `( J/ @" ?/ a1 k% x7 J
140.         0x00,0x00,0x08,0x0F,0x0F,0x08,0x00,0x00,
     7 `% C8 \: O9 c, z2 J# w/ @+ x
141. 
     
142.         0x00,0x00,0x00,0x04,0xFC,0xFC,0x04,0x00,  // -J-
     . }; y2 f/ P5 O3 ^- x" A2 Z& o
143.         0x07,0x0F,0x08,0x08,0x0F,0x07,0x00,0x00,
     ! o2 j" E; t+ {/ t
144. 
     
145.         0x04,0xFC,0xFC,0xC0,0xF0,0x3C,0x0C,0x00,  // -K-
     
146.         0x08,0x0F,0x0F,0x00,0x01,0x0F,0x0E,0x00,
     2 h" }% S, T" c8 I5 \7 T
147. 
     ( L! C' r2 _/ M, h2 I
148.         0x04,0xFC,0xFC,0x04,0x00,0x00,0x00,0x00,  // -L-
     ! N6 r  q* k9 w" Q
149.         0x08,0x0F,0x0F,0x08,0x08,0x0C,0x0E,0x00,
     
150. 
     
151.         0xFC,0xFC,0x38,0x70,0x38,0xFC,0xFC,0x00,  // -M-
     
152.         0x0F,0x0F,0x00,0x00,0x00,0x0F,0x0F,0x00,
     9 \6 z9 u$ ~$ {7 r+ k9 _3 k+ m
153. 
     ) J* o! T6 S; d, B& P6 |- ^' C3 d
154.         0xFC,0xFC,0x38,0x70,0xE0,0xFC,0xFC,0x00,  // -N-
     
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-
     
161.         0x08,0x0F,0x0F,0x08,0x00,0x00,0x00,0x00,
     ( A& a! i+ j3 V* q, n
162. 
     
163.         0xF8,0xFC,0x04,0x04,0x04,0xFC,0xF8,0x00,  // -Q-
     
164.         0x07,0x0F,0x08,0x0E,0x3C,0x3F,0x27,0x00,
     8 x) u4 E+ x: o5 T# X/ }
165. 
     
166.         0x04,0xFC,0xFC,0x44,0xC4,0xFC,0x38,0x00,  // -R-
     
167.         0x08,0x0F,0x0F,0x00,0x00,0x0F,0x0F,0x00,
     
168. 
     
169.         0x18,0x3C,0x64,0x44,0xC4,0x9C,0x18,0x00,  // -S-
     
170.         0x06,0x0E,0x08,0x08,0x08,0x0F,0x07,0x00,
     0 b* ?5 L5 }+ S8 P+ K9 G. U0 u
171. 
     6 h3 X' ^3 _4 d% u( G7 M
172.         0x00,0x1C,0x0C,0xFC,0xFC,0x0C,0x1C,0x00,  // -T-
     
173.         0x00,0x00,0x08,0x0F,0x0F,0x08,0x00,0x00,
     
174. 
     
175.         0xFC,0xFC,0x00,0x00,0x00,0xFC,0xFC,0x00,  // -U-
     
176.         0x07,0x0F,0x08,0x08,0x08,0x0F,0x07,0x00,
     / j& V: ^) a. o3 S
177. 
     
178.         0xFC,0xFC,0x00,0x00,0x00,0xFC,0xFC,0x00,  // -V-
     # j# V( S: k3 i, t0 R) i- e
179.         0x01,0x03,0x06,0x0C,0x06,0x03,0x01,0x00,
     # ^- b8 S- b3 n, H. p8 y
180. 
     % @/ w; t0 s! E, q
181.         0xFC,0xFC,0x00,0x80,0x00,0xFC,0xFC,0x00,  // -W-
     4 m; g8 M- N; x6 O
182.         0x03,0x0F,0x0E,0x03,0x0E,0x0F,0x03,0x00,
     : O9 O/ e: P. F# t- _
183. 
     
184.         0x0C,0x3C,0xF0,0xC0,0xF0,0x3C,0x0C,0x00,  // -X-
     + L  f4 H" ~, V
185.         0x0C,0x0F,0x03,0x00,0x03,0x0F,0x0C,0x00,
     
186. 
     
187.         0x00,0x3C,0x7C,0xC0,0xC0,0x7C,0x3C,0x00,  // -Y-
     2 l0 K9 y! ~  j: `
188.         0x00,0x00,0x08,0x0F,0x0F,0x08,0x00,0x00,
     ( [. f7 h3 `2 s
189. 
     2 j( s% S; a$ ]. S" Y
190.         0x1C,0x0C,0x84,0xC4,0x64,0x3C,0x1C,0x00,  // -Z-
     1 K2 V# J- r  M7 `2 H& d/ {
191.         0x0E,0x0F,0x09,0x08,0x08,0x0C,0x0E,0x00,
     ! [+ n! x* |/ N, ?0 A
192. 
     $ {6 f% G6 t( @
193.         0x00,0x00,0xFC,0xFC,0x04,0x04,0x00,0x00,  // -[-
     + |7 Y9 R7 Z% w: n1 y
194.         0x00,0x00,0x0F,0x0F,0x08,0x08,0x00,0x00,
     % F6 X( D% r; C" L! b/ V' {8 \
195. 
     4 q6 Z& Q. F3 h. e+ _. D5 w7 T
196.         0x38,0x70,0xE0,0xC0,0x80,0x00,0x00,0x00,  // -\-
     
197.         0x00,0x00,0x00,0x01,0x03,0x07,0x0E,0x00,
     
198. 
     
199.         0x00,0x00,0x04,0x04,0xFC,0xFC,0x00,0x00,  // -]-
     8 H- y' x6 O7 l) }
200.         0x00,0x00,0x08,0x08,0x0F,0x0F,0x00,0x00,
     
201. 
     # p/ k- m# U! H. Q
202.         0x08,0x0C,0x06,0x03,0x06,0x0C,0x08,0x00,  // -^-
     * `' r5 E8 X& e: A6 D
203.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
     # u0 T* E& R" x* W1 b1 {) u
204. 
     $ a" ~  z% B- H6 S3 _0 k4 U
205.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,  // -_-
     ) o0 j7 F: [7 ?
206.         0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,
     & S* `$ F# i8 I. F$ }7 _
207. 
     * ~% |4 k8 @# I9 @# ]
208.         0x00,0x00,0x03,0x07,0x04,0x00,0x00,0x00,  // -`-
     - V9 U( I  \: o  k! W5 l5 e6 _
209.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
     
210. 
     * {; k* g8 x3 o$ k( f7 F% c( L& o
211.         0x00,0xA0,0xA0,0xA0,0xE0,0xC0,0x00,0x00,  // -a-
     / B8 c% f* S7 F$ K& {4 O" U* n
212.         0x07,0x0F,0x08,0x08,0x07,0x0F,0x08,0x00,
     & c$ J- H* H7 b! m6 E
213. 
     
214.         0x04,0xFC,0xFC,0x20,0x60,0xC0,0x80,0x00,  // -b-
     
215.         0x08,0x0F,0x07,0x08,0x08,0x0F,0x07,0x00,
       d' |2 K2 T2 P
216. 
     # O2 B, l% E0 p. G3 D2 l
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-
     3 K: L' ]2 E/ q' g. g
221.         0x07,0x0F,0x08,0x08,0x07,0x0F,0x08,0x00,
     $ W" _  N  [5 c0 R
222. 
       D  n' x7 o+ ~
223.         0xC0,0xE0,0xA0,0xA0,0xA0,0xE0,0xC0,0x00,  // -e-
     
224.         0x07,0x0F,0x08,0x08,0x08,0x0C,0x04,0x00,
     ( I4 t. a) @5 o& g) C% b- y) [
225. 
     
226.         0x40,0xF8,0xFC,0x44,0x0C,0x18,0x00,0x00,  // -f-
     , f6 _7 C0 a7 v, _: n$ ^
227.         0x08,0x0F,0x0F,0x08,0x00,0x00,0x00,0x00,
     
228. 
     6 z0 X5 x) x2 V2 ?' j* F- e
229.         0xC0,0xE0,0x20,0x20,0xC0,0xE0,0x20,0x00,  // -g-
     
230.         0x27,0x6F,0x48,0x48,0x7F,0x3F,0x00,0x00,
     
231. 
     
232.         0x04,0xFC,0xFC,0x40,0x20,0xE0,0xC0,0x00,  // -h-
     
233.         0x08,0x0F,0x0F,0x00,0x00,0x0F,0x0F,0x00,
     3 J9 C; l/ G: u5 D( s
234. 
     
235.         0x00,0x00,0x20,0xEC,0xEC,0x00,0x00,0x00,  // -i-
     8 e+ @" T' B6 b3 v* ^5 j: X# R9 H
236.         0x00,0x00,0x08,0x0F,0x0F,0x08,0x00,0x00,
     ! o( i* j0 ^; w/ |- G0 O- S
237. 
     4 g0 b' V3 m! q2 M% ~9 t
238.         0x00,0x00,0x00,0x00,0x20,0xEC,0xEC,0x00,  // -j-
     
239.         0x00,0x30,0x70,0x40,0x40,0x7F,0x3F,0x00,
     
240. 
     7 z( S' ?4 g: M( C. [: _( I/ `9 m) J9 _
241.         0x04,0xFC,0xFC,0x80,0xC0,0x60,0x20,0x00,  // -k-
     
242.         0x08,0x0F,0x0F,0x01,0x03,0x0E,0x0C,0x00,
     ! L% Y6 ?0 {; F8 z* n- t6 l. x
243. 
     
244.         0x00,0x00,0x04,0xFC,0xFC,0x00,0x00,0x00,  // -l-
     4 A% X& R5 ?4 G( K$ t" z0 F
245.         0x00,0x00,0x08,0x0F,0x0F,0x08,0x00,0x00,
     
246. 
     
247.         0xE0,0xE0,0x60,0xC0,0x60,0xE0,0xC0,0x00,  // -m-
     
248.         0x0F,0x0F,0x00,0x0F,0x00,0x0F,0x0F,0x00,
     
249. 
     . K, v; y6 F4 u! [. n
250.         0x20,0xE0,0xC0,0x20,0x20,0xE0,0xC0,0x00,  // -n-
     8 X/ n* C; T  x  G
251.         0x00,0x0F,0x0F,0x00,0x00,0x0F,0x0F,0x00,
     ; |! b9 p4 z( q3 {1 ^* L+ r' D) {
252. 
     6 M4 m' ~5 S/ D" E9 n# _! U
253.         0xC0,0xE0,0x20,0x20,0x20,0xE0,0xC0,0x00,  // -o-
     
254.         0x07,0x0F,0x08,0x08,0x08,0x0F,0x07,0x00,
     
255. 
     
256.         0x20,0xE0,0xC0,0x20,0x20,0xE0,0xC0,0x00,  // -p-
     0 x& c4 }5 w/ G  A" L
257.         0x40,0x7F,0x7F,0x48,0x08,0x0F,0x07,0x00,
     4 ?3 }* N" B/ G5 P
258. 
     
259.         0xC0,0xE0,0x20,0x20,0xC0,0xE0,0x20,0x00,  // -q-
     
260.         0x07,0x0F,0x08,0x48,0x7F,0x7F,0x40,0x00,
     3 f- w# l2 ~( t/ `, W9 ?7 l
261. 
     
262.         0x20,0xE0,0xC0,0x60,0x20,0x60,0xC0,0x00,  // -r-
       P6 S7 E) @# Q/ d4 m  v( M
263.         0x08,0x0F,0x0F,0x08,0x00,0x00,0x00,0x00,
     
264. 
     ! e' z: c" ]( \6 T! H$ ~- Y; r
265.         0x40,0xE0,0xA0,0x20,0x20,0x60,0x40,0x00,  // -s-
     
266.         0x04,0x0C,0x09,0x09,0x0B,0x0E,0x04,0x00,
     
267. 
     ' W/ Z" G& V8 B: z7 L- R  B
268.         0x20,0x20,0xF8,0xFC,0x20,0x20,0x00,0x00,  // -t-
     
269.         0x00,0x00,0x07,0x0F,0x08,0x0C,0x04,0x00,
     
270. 
     , t" F; P- s$ h" a$ ]& a1 k8 |) e
271.         0xE0,0xE0,0x00,0x00,0xE0,0xE0,0x00,0x00,  // -u-
     
272.         0x07,0x0F,0x08,0x08,0x07,0x0F,0x08,0x00,
     
273. 
     . z' U: d) j! l9 ?7 J; N; P+ f
274.         0x00,0xE0,0xE0,0x00,0x00,0xE0,0xE0,0x00,  // -v-
     & ]8 S2 _+ O4 o1 u- o/ \" k
275.         0x00,0x03,0x07,0x0C,0x0C,0x07,0x03,0x00,
     6 c: o  E7 x2 e4 V
276. 
     
277.         0xE0,0xE0,0x00,0x00,0x00,0xE0,0xE0,0x00,  // -w-
     # |- [- m1 P7 ?7 h, ?( Q8 M. T
278.         0x07,0x0F,0x0C,0x07,0x0C,0x0F,0x07,0x00,
       W. b! o; e) F+ O# {- l
279. 
     
280.         0x20,0x60,0xC0,0x80,0xC0,0x60,0x20,0x00,  // -x-
       Z7 _: {" d  u* m" K, v5 N
281.         0x08,0x0C,0x07,0x03,0x07,0x0C,0x08,0x00,
     
282. 
     
283.         0xE0,0xE0,0x00,0x00,0x00,0xE0,0xE0,0x00,  // -y-
     % k, B( [% I) {9 Z
284.         0x47,0x4F,0x48,0x48,0x68,0x3F,0x1F,0x00,
     
285. 
     
286.         0x60,0x60,0x20,0xA0,0xE0,0x60,0x20,0x00,  // -z-
     # v( R6 }9 R7 x, D  U7 X5 h
287.         0x0C,0x0E,0x0B,0x09,0x08,0x0C,0x0C,0x00,
     
288. 
     
289.         0x00,0x40,0x40,0xF8,0xBC,0x04,0x04,0x00,  // -{-
     % g+ D, U2 \3 i5 R+ v7 s, Q$ T4 r
290.         0x00,0x00,0x00,0x07,0x0F,0x08,0x08,0x00,
       C1 X- u: p% Q9 c
291. 
     - I6 ]8 [! F: i4 R! f
292.         0x00,0x00,0x00,0xBC,0xBC,0x00,0x00,0x00,  // -|-
     ) C" o9 t/ Q: W9 o. a& I
293.         0x00,0x00,0x00,0x0F,0x0F,0x00,0x00,0x00,
     ; n  L& }5 O& Z  L* ~' \5 C
294. 
     4 B2 X& P2 D* L/ T( e. r
295.         0x00,0x04,0x04,0xBC,0xF8,0x40,0x40,0x00,  // -}-
     + L% U6 C' @; N0 g  z! d
296.         0x00,0x08,0x08,0x0F,0x07,0x00,0x00,0x00,
     4 s' A0 K7 n6 x# @4 B1 j, ?! o
297. 
     
298.         0x08,0x0C,0x04,0x0C,0x08,0x0C,0x04,0x00,  // -~-
     
299.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
     4 U6 |& J8 ]9 f6 j% K. h
300. 
     ( |0 W# N2 h; [2 c1 N
301.         0x80,0xC0,0x60,0x30,0x60,0xC0,0x80,0x00,  // --
     * D  w2 A1 w! J* v( @- k0 g4 K
302.         0x07,0x07,0x04,0x04,0x04,0x07,0x07,0x00,
     / W+ n; `3 O( ?# S6 F% j
303. };
     
304. 
     
305. #endif /* OLED_ASCII_H_ */

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& g# i* `/ V) \, B; n【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：
: w5 A7 A* A3 ^3 A/ y5 Q6 d. E

1. ！16个8bit的字段的二进制表示如下
   * I" u# k) S3 Z
2. 0X00     0 0 0 0 0 0 0 0
   
3. 0X00     0 0 0 0 0 0 0 0
   % K: O, }; x1 P* K- e
4. 0X38     0 0 1 1 1 0 0 0
   ) {: a' S2 R( u" |7 P
5. 0XFC     1 1 1 1 1 1 0 0
   
6. 0XFC     1 1 1 1 1 1 0 0
   ) P( Y: q4 ^1 n  m3 h
7. 0X38     0 0 1 1 1 0 0 0
   
8. 0X00     0 0 0 0 0 0 0 0
   
9. 0X00     0 0 0 0 0 0 0 0
   
10. 
    
11. 0X00     0 0 0 0 0 0 0 0
    
12. 0X00     0 0 0 0 0 0 0 0
    . S; h( m& J/ N# z2 y2 q# E) R) X
13. 0X00     0 0 0 0 0 0 0 0
    ; X- H" ?( s! [6 t6 w
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
    8 `0 r3 W" ?$ ]; \
17. 0X00     0 0 0 0 0 0 0 0
    4 P7 Z2 `) Y$ h1 ~0 s3 t
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：
3 E  o6 m  O  |/ y* H1 j

1. //将8*8二进制矩阵翻转
   1 P4 t4 P5 b( Q$ l/ O& K
2. 0X000X000X380XFC0XFC0X380X000X00
   # G. d! K8 O2 g6 N
3. 0        0        0        0        0        0        0        0
   - Z3 g# n5 ^3 E; e" i' P( @
4. 0        0        0        0        0        0        0        0
   
5. 0        0        0        1        1        0        0        0
   3 H+ O7 ], C1 l# m# O
6. 0        0        1        1        1        1        0        0
   
7. 0        0        1        1        1        1        0        0
   - R# n0 W. H- @; X, P
8. 0        0        1        1        1        1        0        0
   ) I! g( ?9 Y, Y( S2 s8 Q# m
9. 0        0        0        1        1        0        0        0
   7 ]  i8 j% l3 A# W
10. 0        0        0        1        1        0        0        0
    
11. 0X000X000X000X0D0X0D0X000X000X00
    " E, S: i  |, D0 B3 b7 {
12. 0        0        0        1        1        0        0        0
    
13. 0        0        0        0        0        0        0        0
    ) w) S2 H( _' Y2 [5 h+ J; r5 I! m
14. 0        0        0        1        1        0        0        0
    5 m& K. M; C1 o, j5 `/ c5 k* h" Y
15. 0        0        0        1        1        0        0        0
    
16. 0        0        0        0        0        0        0        0
    ) k# L( R) @" j; n6 M7 b" Z4 x+ q
17. 0        0        0        0        0        0        0        0
    1 u8 w2 x2 ~4 U6 G
18. 0        0        0        0        0        0        0        0
    8 W* B6 t! G' r0 _; |3 {$ h
19. 0        0        0        0        0        0        0        0
    # U. \8 o3 d% P) [. U3 l
20. 
    ! Q8 ]5 m% b9 ~1 n$ J# b: {
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
    * o  W: h3 \4 q
22. 00000000
    
23. 00000000
    ) A' N& q# }5 [/ O
24. 00011000
    5 g" R% }: c" E! L( c% _
25. 00111100
    
26. 00111100
    0 A2 Y9 Z6 F$ y+ m' }6 t
27. 00111100
    ; W0 z( e- K- G' n8 N  `% B# L
28. 00011000
    2 p2 \- i3 _" h: j6 z- B
29. 00011000
    2 y, F8 F$ g9 v
30. 00011000
    5 K; y; ~* S: C: c/ N
31. 00000000
    
32. 00011000
    
33. 00011000
    ! s* l0 J/ ^( z2 {8 J3 B( [
34. 00000000
    5 k! O% @; @5 F2 B% K0 q
35. 00000000
    ! D! A- ^9 S1 v2 n$ y( l6 ?; _
36. 00000000
    
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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" o4 f! l) |( z        （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

# n/ B) j% v+ F. X8 h* k2 e( I# j8 \        现在给出字符8*16二进制矩阵获取代码：
) P; Z  J# @' t5 u, ^; ?# j& o

1. //addr为字符的地址信息
   + R' S' F  u: D% J8 K/ @
2.         uint8_t buffer[16][8]={0};
   7 |3 T6 q6 r# _0 Y
3.         for(uint8_t i=0; i<16; i++)
   
4.         {
   3 o; Q) z' g/ I/ C0 ?; W* A
5.                 uint16_t buf=ASCII_8x16[(addr*16)+i-512];
   
6.                 printf("0X%02X ",buf);
   
7.                 for(uint8_t j=0;j<8;j++){
   2 M, A* F0 l" G; y  B
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
   9 b1 I% b8 V, m- M: r  z3 l' T
9.                         buffer[8*(i/8)+j][i%8]=(0x01&(buf>>j))>0?1:0;
   
10.                 }
    
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");
    
19.         }

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/ s0 h, f# f* @, e        （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：
6 S5 V1 J: W" _) {

& R$ K4 ~0 t( }. e( i
- m/ q8 e  _0 ]6 U 【3】字符串olde输出
1 c* t- r$ P3 l- Q        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
   9 r- ^7 B& C5 {5 v$ u5 D
2. void OLED_DISPLAY_8x16(uint8_t x, uint8_t y, uint16_t w){ //要显示汉字的编号
   0 K. l( v4 g% \& |4 J
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;
   # T: t+ V/ Y# ~1 u9 e+ w# T
5.         uint16_t textData[16][8]={0};
   4 i' B1 r; l  i$ \5 n$ N. x
6. //        uint8_t buffer[16][8]={0};
   8 w5 [# ]) p$ x! `% L
7.         for(uint8_t i=0; i<16; i++)
   
8.         {
   * O0 h. {1 L/ n* Y+ K
9.                 uint16_t buf=ASCII_8x16[(w*16)+i-512];
   2 P! y$ j: q) J3 V
10. //                printf("0X%02X ",buf);
    ( J$ [" ?, e9 Q" ~% a. k
11.                 for(uint8_t j=0;j<8;j++){
    5 ~. |3 \' n. [3 b7 _6 W/ E* n1 P
12. //                        printf("%d ",(0x01&(buf>>j))>0?0x01:0x00);
    ' }3 h! h4 C+ e" H% ?  p+ K
13. //                        buffer[8*(i/8)+j][i%8]=(0x01&(buf>>j))>0?1:0;
    4 K7 h* h9 c0 J: \
14.                         color = (0x01&(buf>>j))>0?LCD_DISP_BLACK:LCD_DISP_BLUE;
    
15.                         textData[8*(i/8)+j][i%8] = color;
    2 g0 x' \7 l6 Z  H0 \. d' Y. U" E
16. //                        OLED_WritePixel(x+i%8,y+8*(i/8)+j,color);//单像素渲染
    
17.                 }
    5 o/ ~# g$ F9 h% \+ X7 a0 l' f* e5 F
18. //                printf("\r\n");
    / d: q4 b) p7 ]0 E1 e- k7 y) k9 L! d1 t
19.         }
    
20.         for(uint8_t i=0; i<16; i++)
    ' S1 x: Z# Y; {% S. U# q
21.         {
    
22.                 OLED_WriteLine(x,y+i,textData[i],8);//列像素渲染
    * }! z# a0 V5 a/ P2 @
23. //                for(uint8_t j=0;j<8;j++){
    
24. //                        printf("%d",buffer[i][j]);
      s" M; g, w" j% v
25. //                }
    " y. f; s- q# O& N
26. //                printf("\r\n");
    , u/ q  ~" U3 U: d" f
27.         }
    
28. }
    7 c1 V% E# \' l# o% {9 B
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
    9 t! E8 F0 t0 }; g4 V& K
34.                 OLED_DISPLAY_8x16(xpos+r*8,ypos,*str++);//显示英文与数字8*16的ASCII码
    6 B( ?- x' y" \( L7 E" _$ X
35.                 r++;
    9 C6 Q2 {- C! ~3 I  n% T
36.     }
    
37. }
    & g1 p" L3 {5 ]
38. //OLED专用的printf函数
    
39. //调用方法：OLED_printf(0,0,"123");
    * x; @6 v0 E" W: g
40. //注意若xpos或ypos过大，并内容较多时，会出现溢出边界
    & u$ \" A8 B' ^8 K7 y, D- x
41. #define line_size 29
    - b' ~2 ~) o6 \/ b
42. #define row_size 16
    
43. void OLED_printf (uint8_t xpos,uint8_t ypos,char *fmt, ...)
    # S6 l; Q2 a& A, u3 b' d
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
    7 Y; F* q& z  j- P% ^! ]! M! N3 Z
46.     uint16_t size=0;
    . U+ n8 N( Z' m  ~' W6 C/ F9 V
47.     uint16_t row = 1+strlen(fmt)/line_size;//暂时没考虑自带换行符号情况
    ; a% o' x; C8 q! u
48. //    printf("row=%d\r\n",row);
    
49.     for(uint16_t i=0;i<row;i++){
    9 E' ^+ F! G# g
50.         va_list arg_ptr;
    
51.         va_start(arg_ptr,fmt);
    # l2 e& \( m6 o9 h& Y: z
52.         vsnprintf(buff, line_size,fmt+i*line_size,arg_ptr);//数据转换
    $ L, e# ?5 _3 p$ q% 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）
    
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
    3 z; z" S+ k5 I3 S% n
56.         va_end(arg_ptr);
    
57.     }
    7 Z+ F% ?. H3 }- `+ R/ j3 L
58. }

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【4】SPI的直接输出和DMA输出区别实现
/ W- z6 d. i) f/ P$ o8 n        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。

+ ]$ d  g' Y0 T8 V% [        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. {
   " s/ V+ y  M0 l, V# r
3.     /* 指定X方向操作区域 */
   $ r% k- W. f  s4 [
4.         LcdWriteReg(0x2a);
   0 |7 G9 B  x  J! O
5.         LcdWriteData(x1 >> 8);
   8 x: r5 b( }: H, z
6.         LcdWriteData(x1);
   
7.         LcdWriteData(x2 >> 8);
   6 _2 W" {  b+ ]
8.         LcdWriteData(x2);
   1 B+ d( p; O, x6 w. y+ Z
9. 
   
10.     /* 指定Y方向操作区域 */
    
11.         LcdWriteReg(0x2b);
    4 |+ W& F4 F. b) T5 m
12.     LcdWriteData(y1 >> 8);
    * R5 P0 G/ H2 K" ~* h6 J% x! @
13.     LcdWriteData(y1);
    
14.     LcdWriteData(y2 >> 8);
    
15.     LcdWriteData(y2);
    
16. 
    
17.     /* 发送该命令，LCD开始等待接收显存数据 */
    0 a% j6 ~+ N' W3 {% x2 \+ i
18.     LcdWriteReg(0x2C);
    
19. }
    
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)
    $ E' _+ h9 q1 f+ u: R
22. {
    $ c& {, k/ h* V- [  J
23.         LCD_Address_Set(Xpos,Ypos,WIDTH-1,Ypos);
    * w2 Q; h0 l* Q) q& j+ B- ^
24. }
    
25. 
    . ~* ^4 ?- j1 V) C/ J* v+ ]4 y
26. void BSP_LCD_Clear(uint16_t Color)
    . @( F/ t3 s" J% b
27. {
    6 j2 W" e# E) k% _+ B
28.         uint8_t black_gui[480] = {0};
    
29.         memset(black_gui, Color, sizeof(black_gui));
    ! \0 k1 [1 V* {* Q+ E2 Z
30. 
    4 X  A8 B: E3 c/ Q8 w9 Z- `! o
31.         for (uint32_t counter = 0; counter < 240; counter++)
    
32.         {
    1 J, L  O+ l# y* e  y0 x* C
33.                 /* Set Cursor */
    
34.                 OLED_SetCursor(0, counter);
    
35.                 /* Prepare to write to LCD RAM */
    
36.                 OLED_WriteReg(0x2C, (uint8_t*)NULL, 0);
    3 F3 G9 f! k* j9 ~7 C5 ^3 [* |
37.                 /* RAM write data command */
    
38.                 LcdWriteDataMultiple(black_gui, 480);
    
39.         }
    
40. }
    
41. 
    8 o1 l5 l1 u' ~/ t6 E3 d( }
42. extern volatile uint8_t one_frame_done;
    $ _. q8 ^4 z4 x+ D; S
43. void BSP_LCD_Clear_DMA(uint16_t Color)
    0 v: P( N6 K' Y; n) r
44. {
    . l4 S2 B7 C, F* d) I. H: a
45.         uint8_t black_gui_DMA[WIDTH*HEIGHT*2] = {0X00};
    
46.         for(uint32_t i=0; i<WIDTH*HEIGHT; i++)
    * K" V6 d1 G7 x/ [
47.         {
    : A+ X; a' L, \
48.                 black_gui_DMA[2*i]=Color>>8;
    9 H; r5 w2 K8 N' M, c9 d
49.                 black_gui_DMA[2*i+1] = Color;
    1 e4 ~0 Y6 ~: [3 R
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)
    
53.         one_frame_done = 0;
    + O8 a/ \! U# m3 [
54.     /* 指定显存操作地址为全屏*/
    ' E+ P# g* w7 Y, f  M- f
55.     LCD_Address_Set(0, 0, WIDTH - 1, HEIGHT/2 - 1);
    . a. y( a/ p0 J
56.     Data_Cmd_State(1);/* 指定接下来的数据为数据 */
    , i8 ~4 K* T9 A- g' w0 |5 H
57.     /*DMA 写前半屏*/
    
58.     HAL_SPI_Transmit_DMA(&hspi1,black_gui_DMA, WIDTH*HEIGHT);
    ! _" e0 k0 Z( I3 K2 @( b
59.     while(!one_frame_done){/*release cpu and doing something else*/}
    ' ?$ N# \4 D1 b$ F/ Z# M" s
60.         one_frame_done = 0;
    
61.     /* 指定显存操作地址为全屏*/
    
62.     LCD_Address_Set(0, HEIGHT/2, WIDTH - 1, HEIGHT - 1);
    ( P: Y3 E- |. j  v) H* L
63.     Data_Cmd_State(1);/* 指定接下来的数据为数据 */
    9 r* P2 b6 @' Z& {- M; A' |2 m
64.     /*DMA 写后半屏*/
    , s$ s* T1 K: u/ C0 S5 B1 }8 \& w
65.     HAL_SPI_Transmit_DMA(&hspi1,black_gui_DMA+WIDTH*HEIGHT, WIDTH*HEIGHT);
    
66.     while(!one_frame_done){/*release cpu and doing something else*/}
    
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：
# @' B5 w9 _# E+ n& o

1. //spi.c末加上spi的中断回调实现
   8 C* z% m4 r  ]# b4 t) J% l
2. /* USER CODE BEGIN 1 */
   1 B! n" ^' B1 K" C0 P. o
3. volatile uint8_t one_frame_done;
   6 Z' ^! |, X1 A0 B
4. void HAL_SPI_TxCpltCallback(SPI_HandleTypeDef *hspi)
   
5. {
   
6.         one_frame_done = 1;
   
7. }
   
8. /* USER CODE END 1 */
   
9. 
   
10. //用来替换调stm32l4xx_hal_spi.c的弱函数
    " z# R+ V/ H' Q6 P
11. __weak void HAL_SPI_TxCpltCallback(SPI_HandleTypeDef *hspi)
    
12. {
    : E/ f9 N8 [# E9 N! G
13.   /* Prevent unused argument(s) compilation warning */
    
14.   UNUSED(hspi);
    
15. 
    4 Z, Y4 j9 B0 j2 Z
16.   /* NOTE : This function should not be modified, when the callback is needed,
    * I7 V( @% l1 [( O  F8 T
17.             the HAL_SPI_TxCpltCallback should be implemented in the user file
    7 v1 H1 k( F, J" p4 R" D+ P
18.    */
    
19. }

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六、程序编译及测试
        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 */
   + s7 f7 H6 n5 O8 \9 S' `; v4 H0 [
2.   while (1)
   
3.   {
   
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
   
8.           }
   : G4 E" o9 e( V: H; s
9.           if(KEY_0())
   8 w! l- _/ y3 h8 p2 u/ X
10.           {
      u; l1 |7 Z( |4 H
11.                   OLED_printf(10,10,"hello world to stm32!I am an embedded enthusiast.");
    " C) b/ p; y6 j4 d- g" u, n! |' Q
12.                   OLED_printf(10,48,"  STM32CubeIDE is an advanced C/C++ development platform "
    
13.                                   "with peripheral configuration, code generation, code compilation, "
    
14.                                   "and debug features for STM32 micro controllers and microprocessors.");
    2 i0 r  C7 R6 I( F( P0 I/ [* ]3 P8 {1 G
15. //                  OLED_printf(10,10,"!");
    ! V0 }5 N5 s! J% j  [& \9 [- C
16.           }
    
17.           if(KEY_1())
    6 k! L7 |% B0 R5 X# e' ]* j  ]
18.           {
    7 u- O  s0 B! F8 r' B" G
19.                   BSP_LCD_Clear(0xF800);
    
20.                   printf("OLED_Clear\r\n");
    
21.           }
    - ^; x  g& \, m, O0 ]
22.           if(KEY_2())
    - ~( i5 a6 A; e( R$ Q
23.           {
    # {5 {' y1 i' ]
24.                   BSP_LCD_Clear_DMA(LCD_DISP_BLUE);
    
25.                   printf("OLED_Clear_DMA\r\n");
    
26.           }
    4 c  M+ X( S4 ~8 D
27.         Toggle_led0();
    
28.     /* USER CODE END WHILE */

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        编译完成后测试效果如下：

        1）按键key1清屏，发送字符串
  O6 J; B* l5 ]; r3 p

- J/ A# L' @( H. q9 i8 ^: J& m
4 Q+ x+ }+ k: F  x% \
7 J% s% ^" n. X" \4 r/ w/ R
+ Y* l  w5 D$ I. X. p
        2）按键key0，输出一段文字




七、附件
5 b" G" w* ?+ m2 Z        oled.h

1. #ifndef _OLED_H_
     I! B+ H! b' `# `& S+ ~* u
2. #define _OLED_H_
   " {" M0 u9 o( q) B
3. /*
   
4. * for st7789 oled 模组
   * K( Y. B5 J) ~3 C4 @
5. */
   
6. #define WIDTH                240
   : v/ I) K4 b( l- I5 {- w, {9 x- h
7. #define HEIGHT                240
   : x: N! V: ]  f
8. #define BPP                16
   . P: Z, U4 L1 K$ q& @
9. 
   - }% V, ^2 i( V3 k
10. /* Init script function */
    * x& l' J% ~+ Q( {
11. struct OLED_function {
    
12.   uint8_t cmd;
    
13.   uint16_t data;
    . N1 N" c9 _1 u9 V
14. };
    
15. 
    
16. /* Init script commands */
    ' ^6 n* H( f! K
17. enum OLED_cmd {
    
18.   OLED_START,
    3 W  I& ^# @. N
19.   OLED_END,
    ) V$ z; v# {: D# C. M8 U
20.   OLED_CMD,
    
21.   OLED_DATA,
    2 j6 \! ^% V6 o& t* S
22.   OLED_DELAY
    0 g5 }7 l- @' H5 p- P1 I
23. };
    
24. 
    ; O6 H! z6 |. I6 o+ ~
25. /************** 颜色(RGB 5,6,5) **************/
    
26. #define LCD_DISP_RED                    0xF800       //先高字节，后低字节
    
27. #define LCD_DISP_GREEN                  0x07E0
    
28. #define LCD_DISP_BLUE                   0x001F
    
29. #define LCD_DISP_WRITE                  0xFFFF
    ( g2 v  B1 D* D# m" W
30. #define LCD_DISP_BLACK                  0x0000
    
31. #define LCD_DISP_GRAY                   0xEF5D
    
32. #define LCD_DISP_GRAY75                 0x39E7
    
33. #define LCD_DISP_GRAY50                 0x7BEF
    
34. #define LCD_DISP_GRAY25                 0xADB5
    
35. 
    
36. /* oled Commands */
    
37. #define OLED_CASET        0x2A
    
38. #define OLED_RASET        0x2B
    # Q8 }& R* K7 V. M$ k. h
39. #define OLED_RAMWR        0x2C
    
40. #define OLED_RAMRD        0x2E
    
41. 
    
42. //对该位写1或0
    ' y  d; H; z8 H
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__))
    
46. 
    
47. int OLED_init();
    
48. void LcdWriteReg(uint8_t Data);
    3 ?) I6 Z$ ^* `2 V+ D
49. void LcdWriteData(uint8_t Data);
    
50. void LcdWriteDataMultiple(uint8_t * pData, uint32_t NumItems);
    
51. 
    4 J" L7 `9 w) e, [/ {* I3 ]
52. void OLED_WritePixel(uint16_t Xpos, uint16_t Ypos, uint16_t RGBCode);
    + F7 w6 r+ ~% O- n
53. void OLED_WriteLine(uint16_t Xpos, uint16_t Ypos, uint16_t *RGBCode, uint16_t pointNum);
    
54. 
    2 p5 S+ h; {# n2 k' @: L
55. void BSP_LCD_Clear(uint16_t Color);
    
56. void BSP_LCD_Clear_DMA(uint16_t Color);
    * Y  [- Q# K& ~+ E2 f- {
57. void OLED_printf (uint8_t xpos,uint8_t ypos,char *fmt, ...);
    
58. 
    
59. #endif /* __oled_H */

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oled.c

1. #include "stm32l4xx_hal.h"
   
2. #include <stdio.h>
   ( m( v' P: m0 ^% L( K- Q8 i
3. #include <stdlib.h>
   
4. #include <string.h>
   7 s6 X( D, s, M' i& M
5. #include <stdarg.h>
     U0 m2 b; f! w' ~. P: p% J" M
6. #include "main.h"
   ( d3 i3 g! b: \! _
7. #include "ASCII.h"
   6 w7 s% p/ U$ C9 q
8. #include "oled.h"
   ' u: C. W& |$ A/ S8 X, ~
9. 
   2 A% v1 F7 K1 Q4 }- U9 U
10. extern SPI_HandleTypeDef hspi1;
    / w: [4 B, H( J- ~9 B( j: ?
11. //初始化命令集
    ) J+ A: p: i- l* ~+ X
12. static struct OLED_function OLED_cfg_script[] = {
    
13.   {OLED_START, OLED_START},
    
14.   {OLED_CMD, 0x11},
    ' h0 k  S5 e/ d9 F5 ]+ j1 P3 O
15.   {OLED_DELAY, 120},
    % B7 p; k- j2 k4 V2 `, t. L
16.   {OLED_CMD, 0x36},
    
17.   {OLED_DATA, 0x00},
    / U* w$ _5 U# D' f# p
18.   {OLED_CMD, 0x3a},
    ; w1 J' N7 X9 D0 ~( x
19.   {OLED_DATA, 0x65},
    
20.   {OLED_CMD, 0xb2},
    ) g$ Z+ g% X! \$ R7 N: U
21.   {OLED_DATA, 0x0c},
    . F4 P, t& R; d7 u
22.   {OLED_DATA, 0x0c},
    1 g" h9 v# c- \( U, z: p" a1 i! d$ ^
23.   {OLED_DATA, 0x00},
      U: M; G% z7 k( k! T" Z
24.   {OLED_DATA, 0x33},
    ' s5 j! o, N. ]& I8 @4 @2 \
25.   {OLED_DATA, 0x33},
    + h# P- g+ U3 i  i
26.   {OLED_CMD, 0xb7},
    1 N; f  d/ R" w# m$ V: A& H( y7 ?& T
27.   {OLED_DATA, 0x72},
    # U& ^7 e6 r# v; D# f6 v  T* d
28.   {OLED_CMD, 0xbb},
    . A' n" u4 F8 ?& p" q8 ?" S
29.   {OLED_DATA, 0x3d},
    - Q: h3 \* J  S# q- \
30.   {OLED_CMD, 0xc0},
    
31.   {OLED_DATA, 0x2c},
    
32.   {OLED_CMD, 0xc2},
    ! b1 Y$ @# E# ^
33.   {OLED_DATA, 0x01},
    
34.   {OLED_CMD, 0xc3},
    
35.   {OLED_DATA, 0x19},
    ! ?% I6 L* F' S
36.   {OLED_CMD, 0xc4},
    
37.   {OLED_DATA, 0x20},
    5 ]) l, Y$ n8 g% ~& |  O/ V
38.   {OLED_CMD, 0xc6},
    
39.   {OLED_DATA, 0x0f},
    
40.   {OLED_CMD, 0xd0},
    6 U, g* s* [/ o4 g* h7 n5 ^
41.   {OLED_DATA, 0xa4},
      [4 O* t+ m: S; Y. K
42.   {OLED_DATA, 0xa1},
    
43.   {OLED_CMD, 0xe0},
    
44.   {OLED_DATA, 0x70},
    ) H' s6 K  T4 `' l& ~7 V
45.   {OLED_DATA, 0x04},
    # P7 Q+ N' `# F( p# u0 g' \8 t
46.   {OLED_DATA, 0x08},
    ( g3 M) x2 S6 V9 Q) ^  f% W/ [
47.   {OLED_DATA, 0x09},
    4 l3 b, s- u; B2 o0 t! J
48.   {OLED_DATA, 0x09},
    8 o) \( x3 a& c
49.   {OLED_DATA, 0x05},
    % Y2 y* O8 _4 a- u* x% q
50.   {OLED_DATA, 0x2a},
    % h8 F7 M4 c, D% F2 r( S: v
51.   {OLED_DATA, 0x33},
    $ f8 s7 y* t: \3 v! a; s( q
52.   {OLED_DATA, 0x41},
    " a* i3 a; D; X
53.   {OLED_DATA, 0x07},
    
54.   {OLED_DATA, 0x13},
    
55.   {OLED_DATA, 0x13},
    # c  {7 X2 w7 Q5 t, W- m1 a% a
56.   {OLED_DATA, 0x29},
    2 c4 _: d. L9 o6 x/ O& p: d
57.   {OLED_DATA, 0x2f},
    4 C. _1 w% b7 V0 k# [6 e
58.   {OLED_CMD, 0xe1},
    
59.   {OLED_DATA, 0x70},
    
60.   {OLED_DATA, 0x03},
    , T! w4 Q: ^* c+ j
61.   {OLED_DATA, 0x09},
    ; J( @# {. ^( b) q
62.   {OLED_DATA, 0x0a},
    
63.   {OLED_DATA, 0x09},
    ; M3 @2 z9 q3 P$ C( X+ k- H3 n8 M& R
64.   {OLED_DATA, 0x06},
    0 f6 ~+ i1 y" T3 E
65.   {OLED_DATA, 0x2b},
    ; z; \1 \& X7 t8 k& v9 ]0 t$ |! `
66.   {OLED_DATA, 0x34},
    % X. M1 s/ s0 b
67.   {OLED_DATA, 0x41},
    % o% O5 G/ L! @! x  L! R
68.   {OLED_DATA, 0x07},
    
69.   {OLED_DATA, 0x12},
    
70.   {OLED_DATA, 0x14},
    
71.   {OLED_DATA, 0x28},
    
72.   {OLED_DATA, 0x2e},
    2 h9 F+ I4 T+ S' T- C, {# [
73.   {OLED_CMD, 0x21},
    
74.   {OLED_CMD, 0x29},
    
75.   {OLED_CMD, 0x2a},
    , h& a+ W& w+ U4 K9 ~8 R9 I4 u
76.   {OLED_DATA, 0x00},
    
77.   {OLED_DATA, 0x00},
    
78.   {OLED_DATA, 0x00},
    
79.   {OLED_DATA, 0xef},
    5 i# S- f1 j7 N% G1 J
80.   {OLED_CMD, 0x2b},
    
81.   {OLED_DATA, 0x00},
    5 ?( a' r+ P; i$ B/ y' y! I& q
82.   {OLED_DATA, 0x00},
    ( v/ G! k% M$ o+ u
83.   {OLED_DATA, 0x00},
    3 Y: @0 _( {" E8 q5 K0 `
84.   {OLED_DATA, 0xef},
    ! M- z" h3 C" F5 t! [* J
85.   {OLED_CMD, 0x2c},
    
86.   {OLED_END, OLED_END},
    7 j' g1 S, W0 V, |# w0 a. `
87. };
    
88. 
    
89. static void OLED_run_cfg_script()
      U" g& t& G% V1 K
90. {
    
91.           uint8_t data[2] = {0};
    7 Q. x: c7 {# T, q, n) \3 B
92.           int i = 0;
    , B6 o3 \3 ^2 U8 b: p# H" b  r
93.           int end_script = 0;
    " I; M5 Z2 [4 ?3 B$ H" G* a9 b
94. 
    * T, _6 z* H( ]
95.           do {
    
96.             switch (OLED_cfg_script[i].cmd) {
    ! e/ k" ?: i  T+ }# x2 Q: X2 k
97.             case OLED_START:
    
98.               break;
    
99.             case OLED_CMD:
    * |0 H% e$ {2 O9 L
100.               data[0] = OLED_cfg_script[i].data & 0xff;
     6 x5 h7 A. p0 B5 _
101.               LcdWriteReg(data[0]);
     
102.               break;
     
103.             case OLED_DATA:
     
104.               data[0] = OLED_cfg_script[i].data & 0xff;
     
105.               LcdWriteData(data[0]);
     ( r( D* N2 E5 l5 s
106.               break;
     
107.             case OLED_DELAY:
     
108.               HAL_Delay(OLED_cfg_script[i].data);
     ( E# @/ {) \7 O: `' }2 k' @
109.               break;
     
110.             case OLED_END:
     
111.               end_script = 1;
     
112.             }
     
113.             i++;
     % C. V' r  a% {1 C  X0 r
114.           } while (!end_script);
     
115. }
     
116. 
     6 V( X- U0 b$ ~3 X" d* q
117. static void OLED_reset()
     3 X- U/ K3 J  W$ u/ e- \( r9 z
118. {
     
119.           OLED_RST_State(0);
     % B7 n! E6 b# Y$ l9 S/ ?
120.           HAL_Delay(200);
     , m$ _0 I5 \8 E7 q) q% T
121.           OLED_RST_State(1);
     , T$ q& F( i/ f" b. o# e
122.           HAL_Delay(150);
     , j+ G1 I' d' l6 y& v
123. }
     
124. 
     
125. #define LCD_MAX_MEM16_BLOCK             (1 << 6)
     
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 x: f; }6 Y9 O5 f  y
129. {
     2 ]! S& j+ D- U2 z- _
130.           uint16_t real_mem[LCD_MAX_MEM16_BLOCK] = {0};
     5 @1 U& T3 q& @6 o2 Y
131. 
     
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);
     
136.           Data_Cmd_State(GPIO_PIN_SET);
     
137.           if (pixel_num <= LCD_MAX_MEM16_BLOCK) {
     " h( ^! C. K# e, X
138.                   LcdWriteDataMultiple((uint8_t*)real_mem, pixel_num << 1);
     
139.           } else {
       n6 g5 A1 k8 U; f/ i1 H
140.                   uint16_t count = pixel_num / LCD_MAX_MEM16_BLOCK;
     ! Q3 Q& r& U& s3 i. @  h% N
141.                   uint16_t remain = pixel_num % LCD_MAX_MEM16_BLOCK;
     
142.                   for (uint16_t i = 0; i < count; ++i) {
       x( g2 E* O- p: F0 F
143.                           LcdWriteDataMultiple((uint8_t*)real_mem, LCD_MAX_MEM16_BLOCK << 1);
     * Y( @! f. y! }' E  R
144.                   }
     9 Y/ q% Q8 p4 `. U7 ?2 D
145.                   LcdWriteDataMultiple((uint8_t*)real_mem, remain << 1);
     
146.           }
     
147. }
     
148. 
     5 Z+ Y+ X. h# M; y
149. static void OLED_display_picture(void)
     $ Z5 n$ m/ B% c- z1 m0 b
150. {
     5 s1 c( |; f  o& P& k2 I5 p
151.   LcdWriteReg(OLED_RAMWR);
     
152.   spec_send_fb(0x0, WIDTH * HEIGHT / 4);
       o+ \7 l7 K. G. D' h/ ^7 h( n2 o
153.   spec_send_fb(0x1111, WIDTH * HEIGHT / 4);
     6 j; D  G6 a) q8 a) j9 B3 M
154.   spec_send_fb(0x7777, WIDTH * HEIGHT / 4);
     
155.   spec_send_fb(0xeeee, WIDTH * HEIGHT / 4);
     ( a, C& ~% T+ c) j! H3 @$ w
156. }
     : _2 N4 v$ F1 \* j  c
157. 
     ! F* i+ s9 e. E* T
158. 
     , K6 ~9 X4 S: g/ h
159. int OLED_init()
     7 ?# j, v3 Y6 G: e5 I" s9 [: g
160. {
     . q8 H7 t+ }" A; ?/ m/ D
161.           LCD_PWR_State(0);//回显关闭
     
162.           OLED_reset();
     
163.           OLED_run_cfg_script();
     
164.           LCD_PWR_State(1);//回显开启
     
165.           OLED_display_picture();
     
166. 
     1 F$ a1 X0 F1 {! H% Q& ^# q
167.           return HAL_OK;
     
168. }
     
169. 
     4 a% i" ]- v: K  a# s8 o
170. void OLED_WriteReg(uint8_t Command, uint8_t *Parameters, uint8_t NbParameters)
     
171. {
     / g$ U# L, P# h& L' a
172.           /* Send command */
     
173.           LcdWriteReg(Command);
     
174. 
     
175.           /* Send command's parameters if any */
     & F- x5 p1 {, M( O  H
176.           for (uint8_t i=0; i<NbParameters; i++)
       D) Q& c4 s5 @, Z; `) R9 w
177.           {
     . m- Z% U8 }" ]8 O& @
178.             LcdWriteData(Parameters[i]);
     
179.           }
     / {: ^! T* `3 ?: M' f
180. }
     
181. 
     
182. static void LCD_Address_Set(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2)
     
183. {
     
184.     /* 指定X方向操作区域 */
     
185.         LcdWriteReg(0x2a);
     ) w5 F, o1 {  H- |
186.         LcdWriteData(x1 >> 8);
     ( R$ Z* n$ L9 B
187.         LcdWriteData(x1);
     * Z. w) p' F% f) D, o5 t
188.         LcdWriteData(x2 >> 8);
     
189.         LcdWriteData(x2);
     
190. 
     * u4 g% S& |/ v
191.     /* 指定Y方向操作区域 */
     
192.         LcdWriteReg(0x2b);
     
193.     LcdWriteData(y1 >> 8);
     8 L9 N2 r# ^, R/ [# Z1 A
194.     LcdWriteData(y1);
     
195.     LcdWriteData(y2 >> 8);
     & [% j+ y4 p' g, x5 B" ^# c0 |
196.     LcdWriteData(y2);
     
197. 
     0 f  Z" h# ]! D: O2 D- N! Y- L) y
198.     /* 发送该命令，LCD开始等待接收显存数据 */
     
199.     LcdWriteReg(0x2C);
     
200. }
     
201. 
     4 c/ o3 }% g' H- L1 Q3 Q1 `1 C
202. void OLED_SetCursor(uint16_t Xpos, uint16_t Ypos)
     2 w5 l, R$ S7 c2 y7 p4 c2 Z3 v
203. {
     
204.         LCD_Address_Set(Xpos,Ypos,WIDTH-1,Ypos);
     2 g. Z! e4 a% ^# p
205. }
     
206. 
     ) T- X" c$ Y" n4 E8 x6 }' i
207. void BSP_LCD_Clear(uint16_t Color)
     % n8 P$ R* w' `% I4 L/ n
208. {
     , }! a5 A  W2 ^8 x
209.         uint8_t black_gui[480] = {0};
     
210.         memset(black_gui, Color, sizeof(black_gui));
     - H3 z* b. _* ^+ Y: P9 G
211. 
     
212.         for (uint32_t counter = 0; counter < 240; counter++)
     5 S) s$ X1 W. j# h  ]) ~% k$ m
213.         {
     
214.                 /* Set Cursor */
     6 G( P; v3 }! @  @5 y( S* _
215.                 OLED_SetCursor(0, counter);
     # }$ Z, V9 Q* p8 F7 u
216.                 /* Prepare to write to LCD RAM */
     
217.                 OLED_WriteReg(0x2C, (uint8_t*)NULL, 0);
     , z. Z# l: |2 s8 ]  t
218.                 /* RAM write data command */
     + q/ f6 j4 ?- C" `
219.                 LcdWriteDataMultiple(black_gui, 480);
     
220.         }
     
221. }
     
222. 
     : v4 c! Z! ^$ K+ Q
223. extern volatile uint8_t one_frame_done;
     
224. void BSP_LCD_Clear_DMA(uint16_t Color)
     ' s  c& [7 o; h+ `4 f% x
225. {
     
226.         uint8_t black_gui_DMA[WIDTH*HEIGHT*2] = {0X00};
     
227.         for(uint32_t i=0; i<WIDTH*HEIGHT; i++)
     ( Z7 C9 ^$ V1 ], ?
228.         {
     
229.                 black_gui_DMA[2*i]=Color>>8;
     " l7 g/ E" @3 }7 x
230.                 black_gui_DMA[2*i+1] = Color;
     2 z# O! ~* F. r' K3 E& S
231.         }
     
232.         printf("0X%02x%02x\r\n",black_gui_DMA[0],black_gui_DMA[1]);
     % i! I1 C8 V* C" b& S$ M2 C
233.         //需要分两次写入HAL_SPI_Transmit_DMA写入缓存大小uint16_t(0xfff,65535)
     - ^  g8 s9 u5 E& F  T
234.         one_frame_done = 0;
     ! y# I9 u& ?3 A
235.     /* 指定显存操作地址为全屏*/
     
236.     LCD_Address_Set(0, 0, WIDTH - 1, HEIGHT/2 - 1);
     ; M$ s+ C5 E0 P
237.     Data_Cmd_State(1);/* 指定接下来的数据为数据 */
     ) _# u- ~* k4 T" Y8 d
238.     /*DMA 写前半屏*/
     
239.     HAL_SPI_Transmit_DMA(&hspi1,black_gui_DMA, WIDTH*HEIGHT);
     # A4 g0 a; I" R5 d) @& n
240.     while(!one_frame_done){/*release cpu and doing something else*/}
     
241.         one_frame_done = 0;
     
242.     /* 指定显存操作地址为全屏*/
     . v5 _7 R9 X7 G& l3 c0 \
243.     LCD_Address_Set(0, HEIGHT/2, WIDTH - 1, HEIGHT - 1);
     
244.     Data_Cmd_State(1);/* 指定接下来的数据为数据 */
     0 Q9 p+ f2 ~  I" C/ S
245.     /*DMA 写后半屏*/
     / z# S* T# k; _  Q# f; P
246.     HAL_SPI_Transmit_DMA(&hspi1,black_gui_DMA+WIDTH*HEIGHT, WIDTH*HEIGHT);
     
247.     while(!one_frame_done){/*release cpu and doing something else*/}
     $ D! E6 \' b6 j1 Y6 k
248. }
     - h4 Y1 e  Y9 t! C: j! J% ^
249. 
     
250. //显示英文与数字8*16的ASCII码
     
251. void OLED_DISPLAY_8x16(uint8_t x, uint8_t y, uint16_t w){ //要显示汉字的编号
     - ?1 t; a% ?% ^; H2 |  z
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;
     1 e+ Z! n* \: D; y( ^
254.         uint16_t textData[16][8]={0};
     0 `$ N9 n) M9 A& a# u" F4 ]" G
255. //        uint8_t buffer[16][8]={0};
     
256.         for(uint8_t i=0; i<16; i++)
     1 r" E" S9 v/ G9 B3 w4 w& ^
257.         {
     
258.                 uint16_t buf=ASCII_8x16[(w*16)+i-512];
     ! O* m9 p% u& Y$ c/ ]; f) |4 q2 U
259. //                printf("0X%02X ",buf);
     . \: q* t- B& A
260.                 for(uint8_t j=0;j<8;j++){
     
261. //                        printf("%d ",(0x01&(buf>>j))>0?0x01:0x00);
     6 K6 `) T3 E0 s' f& x
262. //                        buffer[8*(i/8)+j][i%8]=(0x01&(buf>>j))>0?1:0;
     + i9 S2 a: P  j
263.                         color = (0x01&(buf>>j))>0?LCD_DISP_BLACK:LCD_DISP_BLUE;
     
264.                         textData[8*(i/8)+j][i%8] = color;
     ) }* ]* C' L- C9 ^( Q
265. //                        OLED_WritePixel(x+i%8,y+8*(i/8)+j,color);//单像素渲染
     
266.                 }
     0 R" v8 a  i+ L
267. //                printf("\r\n");
     
268.         }
     2 O3 ]' G/ W8 \; G4 B4 W
269.         for(uint8_t i=0; i<16; i++)
     
270.         {
     3 c, @! \! r3 K# \; ]# o
271.                 OLED_WriteLine(x,y+i,textData[i],8);//列像素渲染
     4 [- E  S+ D2 |
272. //                for(uint8_t j=0;j<8;j++){
     
273. //                        printf("%d",buffer[i][j]);
     . E# [( n. l* q6 c& T2 m) P
274. //                }
     
275. //                printf("\r\n");
     
276.         }
     
277. }
     ' N# ^; v2 M; G! i
278. 
     
279. //用于OLED_printf函数专用的显示程序
     # m* J' C6 s& }
280. void OLED_printf_US(uint8_t xpos,uint8_t ypos,uint8_t *str,uint8_t i){
     . _8 _. }/ `6 M8 Y) _
281.         uint8_t r=0;
     
282.         while(i != r){//i是长度值，当显示到i之后退出
     
283.                 OLED_DISPLAY_8x16(xpos+r*8,ypos,*str++);//显示英文与数字8*16的ASCII码
     / e/ R4 d# X5 t: d' ?
284.                 r++;
     7 |+ C  R1 q: z+ N) e0 Y
285.     }
     + Q" R) {; N. E; Y7 Q7 p
286. }
     
287. //OLED专用的printf函数
     
288. //调用方法：OLED_printf(0,0,"123");
     $ D+ u5 L( }! ^' [
289. //注意若xpos或ypos过大，并内容较多时，会出现溢出边界
     ( |- K: a* N& B; e
290. #define line_size 29
     * r; }3 \& B8 m! e- C# ]6 F# d
291. #define row_size 16
     
292. void OLED_printf (uint8_t xpos,uint8_t ypos,char *fmt, ...)
     ( p7 S3 c8 o0 {& @
293. {
     2 ^+ a/ s: \4 i% u. `" U; N5 Q/ y
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;
     & b0 O, [& X* F0 _4 G' \! c& Z6 z5 P
296.     uint16_t row = 1+strlen(fmt)/line_size;//暂时没考虑自带换行符号情况
     7 }) M, B; `$ H! A
297. //    printf("row=%d\r\n",row);
     9 k3 V, F$ n0 N3 F& T5 X1 p. p8 M& B
298.     for(uint16_t i=0;i<row;i++){
     
299.         va_list arg_ptr;
     ! p+ L( S; Q! L0 e0 z, t$ J( x0 E. u
300.         va_start(arg_ptr,fmt);
     + V& m" Z0 j' a( T  P) X
301.         vsnprintf(buff, line_size,fmt+i*line_size,arg_ptr);//数据转换
     & O" o) Y) Q5 N2 ?  ]
302.         size=strlen(buff);                                        //得出数据长度
     0 z! B3 f/ G7 V8 p7 |: g
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）
     , K- @4 e( r; G  k
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);
     9 `; G0 o6 R  @: D; D
306.     }
     
307. }
     5 [5 r. C7 K5 O
308. 
     
309. void OLED_WritePixel(uint16_t Xpos, uint16_t Ypos, uint16_t data)
     1 d& o7 m* b, u% s9 |. B
310. {
     + Y2 f1 C0 V) H7 k2 h
311.           uint8_t dataB = 0;
     
312. 
     
313.           /* Set Cursor */
     ) ]; l; j) _( V# M6 G
314.           OLED_SetCursor(Xpos, Ypos);
     % B& y, r- N" w) L7 l
315. 
     
316.           /* Prepare to write to LCD RAM */
     ) H" [' |# x( d  G) ]4 t
317.           OLED_WriteReg(0x2C, (uint8_t*)NULL, 0);   /* RAM write data command */
     7 B$ D, f4 \+ Q' H" t& w
318. 
     
319.           /* Write RAM data */
     
320.           dataB = (uint8_t)(data >> 8);
     0 ^  @9 z" Q$ z+ c+ ~  H: R  @
321.           LcdWriteData(dataB);
     & E5 H& g3 u: y' d( z  R7 b
322.           dataB = (uint8_t)data;
       t9 E( j0 t8 _% a
323.           LcdWriteData(dataB);
     
324. }
     
325. 
     
326. uint8_t endian_buffer[480];
     
327. 
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328. void OLED_WriteLine(uint16_t Xpos, uint16_t Ypos, uint16_t *RGBCode, uint16_t pointNum)
     
329. {
     2 `% M. w$ D/ A' ?+ ~
330.           /* Set Cursor */
     
331.           OLED_SetCursor(Xpos, Ypos);
     " l* {; A- O* V! l9 `9 A
332. 
     
333.           /* Prepare to write to LCD RAM */
     
334.           OLED_WriteReg(0x2C, (uint8_t*)NULL, 0);   /* RAM write data command */
     1 g9 o2 r, `; `3 R8 [6 O! a$ M
335. 
     
336.           for (uint16_t i = 0; i < pointNum; i++) {
     * b$ Q; r: L  L- L
337.             endian_buffer[2*i] = (uint8_t)(RGBCode[i] >> 8);
     
338.             endian_buffer[2*i + 1] = (uint8_t)RGBCode[i];
     ' M. a8 \8 e* ]2 F3 ?* [% c% C
339.           }
     
340. 
     7 Z. h' N/ W! q. A, d3 c
341.           /* Write RAM data */
     
342.           LcdWriteDataMultiple(endian_buffer, pointNum*2);
     
343. }
     2 j* [% W5 c6 k) O
344. 
     
345. /********************************************************************
     4 Y) L8 ?' E) j
346. *
     / H# V7 d6 \  i0 A# H) \
347. *   LcdWriteReg
     
348. *
     ' m+ I# b# q7 i0 U3 `
349. *         Function description:
     ( a7 P, P; ?4 E1 ~  B& p
350. *   Sets display register
     
351. */
     7 ~3 ~' t/ J2 i2 W! e( d
352. void LcdWriteReg(uint8_t Data)
     : e+ H1 U# R' z; Z  R" I
353. {
     
354.           Data_Cmd_State(0);
     
355.           HAL_SPI_Transmit(&hspi1, &Data, 1, 10);
     2 [" h. f2 {7 [+ _
356. }
     
357. 
     
358. /********************************************************************
     ; Y" B8 O- r' Q1 o4 P0 b1 q
359. *
     
360. *          LcdWriteData
     
361. *
     
362. *         Function description:
     . u2 Y9 \+ U2 b  i
363. *   Writes a value to a display register
     
364. */
     4 ~0 [$ N! ^# [
365. void LcdWriteData(uint8_t Data)
     
366. {
     
367.           Data_Cmd_State(1);
     % T: P' x& h2 ~* a
368.           HAL_SPI_Transmit(&hspi1, &Data, 1, 10);
     . T) r7 T' g, N
369. }
     
370. 
     ! W; u7 z) l. D5 `
371. /********************************************************************
     
372. *
     
373. *        LcdWriteDataMultiple
     * o0 ?3 S' S2 G! N
374. *
     
375. *         Function description:
     
376. *   Writes multiple values to a display register.
     4 r9 a( G+ x2 D6 r; s& j2 m8 t
377. */
     % W! O. v# [8 p- h# K
378. void LcdWriteDataMultiple(uint8_t * pData, uint32_t NumItems)
     + n9 Z, f" R0 ^+ H# n" @
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 */
   ' ~. B* L, p+ p
2. /* Includes ------------------------------------------------------------------*/
   8 E3 z- E! [5 u
3. #include "main.h"
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4. #include "dcmi.h"
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5. #include "dma.h"
   
6. #include "i2c.h"
   
7. #include "usart.h"
   
8. #include "spi.h"
   
9. #include "gpio.h"
   
10. 
    
11. /* Private includes ----------------------------------------------------------*/
    / Y- T) w' [' _. p% ~) F
12. /* USER CODE BEGIN Includes */
    : p- `! v8 ]2 E  M/ v2 q' b7 Z/ w
13. #include "../../ICore/key/key.h"
    * w2 G% T6 a8 W. m
14. #include "../../ICore/led/led.h"
    
15. #include "../../ICore/print/print.h"
    
16. #include "../../ICore/usart/usart.h"
    6 x5 O" z2 z4 Q3 q7 j$ J
17. #include "../../ICore/oled/oled.h"
    
18. /* USER CODE END Includes */
    4 Z6 ]; p( n+ w! T  B1 m! Q
19. 
    
20. /* Private typedef -----------------------------------------------------------*/
    4 P4 V! f7 k6 ?$ N+ ~
21. /* USER CODE BEGIN PTD */
    # G9 F" h- ^/ c
22. 
    
23. /* USER CODE END PTD */
    
24. 
    ; c3 [$ N6 D+ n2 s$ I* k5 G5 V
25. /* Private define ------------------------------------------------------------*/
    
26. /* USER CODE BEGIN PD */
    
27. /* USER CODE END PD */
    1 G' w4 m0 V( ?/ c9 c
28. 
    ) b/ j* ~# W5 j; b
29. /* Private macro -------------------------------------------------------------*/
    
30. /* USER CODE BEGIN PM */
    
31. 
    ; a- T6 C8 c$ U8 d
32. /* USER CODE END PM */
      |* n. I7 ^* b) u) [
33. 
    * B- d( u2 S& ]6 g  u* k% s
34. /* Private variables ---------------------------------------------------------*/
    9 K; s1 z; A/ m
35. 
    
36. /* USER CODE BEGIN PV */
    & C( G. K* m( Q8 x( a
37. 
    6 \+ O1 n; c  W# ^
38. /* USER CODE END PV */
    
39. 
    
40. /* Private function prototypes -----------------------------------------------*/
    , c; T' C8 g% B& @
41. void SystemClock_Config(void);
    
42. /* USER CODE BEGIN PFP */
    4 m4 Y0 A' l2 x3 t( Z% i0 t2 n
43. 
    
44. /* USER CODE END PFP */
    
45. 
    
46. /* Private user code ---------------------------------------------------------*/
    2 b) T( C$ ]# F+ z. A& R( r* g
47. /* USER CODE BEGIN 0 */
    
48. //volatile uint8_t data1[LCD_RAM_SIZE];
    
49. //volatile uint8_t data2[LCD_RAM_SIZE];
    8 p7 `8 W& t9 @8 N
50. //extern volatile uint8_t one_frame_done;
    , p/ J1 ]7 A6 ?7 i' _* X# o, W" T
51. /* USER CODE END 0 */
    
52. 
    . Y6 G0 G" P$ ~" ?* A$ }1 S- `
53. /**
    1 Q* e# q4 M6 ^! R& z$ F9 d
54.   * @brief  The application entry point.
    , {$ T$ Y! o6 t. i! A( O
55.   * @retval int
    
56.   */
    ' j7 e; P$ m; _2 L& U
57. int main(void)
    
58. {
    
59.   /* USER CODE BEGIN 1 */
    7 I9 I$ |! Y" z5 m& z% ?3 l
60. 
    
61.   /* USER CODE END 1 */
    9 D' v: D9 {  B! ?8 q. }
62. 
    1 |, ?: P* S2 d% E: n
63.   /* MCU Configuration--------------------------------------------------------*/
    
64. 
    
65.   /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
    + d* Q- q4 ^. c! E) a
66.   HAL_Init();
    + a- E$ |( ]& a' `+ [) Y
67. 
    5 Q3 r1 ~, F( U  C' B) k0 F
68.   /* USER CODE BEGIN Init */
    
69. 
    
70.   /* USER CODE END Init */
    # L" J) d* Y  Z+ z& A  I% ?
71. 
    
72.   /* Configure the system clock */
    - g4 [' v4 W3 @! c$ Z, G/ R
73.   SystemClock_Config();
    . _& s0 Z4 T5 H9 o  p1 [
74. 
    : I3 ~) U& E$ ]! e/ V
75.   /* USER CODE BEGIN SysInit */
    0 `. F* I% D+ k! u! g
76. 
    0 X2 G3 c1 U; N
77.   /* USER CODE END SysInit */
    & c( {' A( r; X( }1 Y
78. 
    ; W6 T5 a' \1 R% x; e- v! h
79.   /* Initialize all configured peripherals */
    5 F. K8 F  c' O" S& _* a
80.   MX_GPIO_Init();
    
81.   MX_DMA_Init();
    - j5 N# U  s  m% L$ E, R
82.   MX_LPUART1_UART_Init();
    
83.   MX_SPI1_Init();
    
84.   /* USER CODE BEGIN 2 */
    $ ]  Y( s) q/ j1 ^; g; Y4 H
85.   ResetPrintInit(&hlpuart1);
    
86.   HAL_UART_Receive_IT(&hlpuart1,(uint8_t *)&HLPUSART_NewData, 1); //再开启接收中断
    ) B2 W8 W6 P8 o/ |( f  l
87.   HLPUSART_RX_STA = 0;
    
88.   OLED_init();
    
89.   //
    
90.   set_led0_val(0);
    & o( j) `* y) i
91.   set_led1_val(get_key0_val());
    ( H$ S3 T7 f5 c0 {
92.   /* USER CODE END 2 */
    & ^. B9 ^* s& x, g6 j7 Z* U# a$ }" X
93. 
    
94.   /* Infinite loop */
    
95.   /* USER CODE BEGIN WHILE */
    - A9 z5 f, E* B4 t1 G
96.   while (1)
    
97.   {
    9 D) }  R; y  u( `
98.           if(HLPUSART_RX_STA&0xC000){//溢出或换行，重新开始
    . F$ s% [2 K% x" _  _/ y
99.                   OLED_printf(10,10,"%.*s",HLPUSART_RX_STA&0X0FFF, HLPUSART_RX_BUF);
    / o& B7 [  l- |- ~! I+ y
100.                   HLPUSART_RX_STA=0;//接收错误,重新开始
     & d0 B  h0 H$ W& P* _3 s, T8 K. m
101.                   HAL_Delay(100);//等待
     3 w# I: r4 J7 j4 D
102.           }
     
103.           if(KEY_0())
     
104.           {
     
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 "
     
107.                                   "with peripheral configuration, code generation, code compilation, "
     % g5 |4 |& _: B" p% o6 P9 y6 j5 l) a
108.                                   "and debug features for STM32 micro controllers and microprocessors.");
     - l3 }' g+ S* ^9 f
109. //                  OLED_printf(10,10,"!");
     - S/ @* j/ N0 [/ s
110.           }
     
111.           if(KEY_1())
     
112.           {
     
113.                   BSP_LCD_Clear(0xF800);
     
114.                   printf("OLED_Clear\r\n");
     : q" O* ~  A; i2 b: F
115.           }
     
116.           if(KEY_2())
     4 C: N, C5 e- r2 _( N; N
117.           {
     & [$ B% X3 j! Q
118.                   BSP_LCD_Clear_DMA(LCD_DISP_BLUE);
     ) M7 z/ J, S% I* L: J
119.                   printf("OLED_Clear_DMA\r\n");
     $ J9 b  J; B* g1 J: R1 x) n# ?
120.           }
     
121.         Toggle_led0();
     
122.     /* USER CODE END WHILE */
     
123. 
     
124.     /* USER CODE BEGIN 3 */
     
125.   }
     1 O5 d* m+ U3 r8 R
126.   /* USER CODE END 3 */
     
127. }

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