• STM32 OLED屏幕显示详解

    目录

    1.OLED介绍

    2.OLED如何显示一个点？

    内存管理​编辑​编辑

    页地址模式

    水平地址模式​编辑

    垂直地址模式

    ​编辑

    3.OLED显示图片

    用到的库函数：

    向OLED写命令的封装：

    显示图片代码示例：

    1.OLED介绍

    OLED是有机发光管(Organic Light-Emitting Diode)的缩写，是一种新兴的平面显示屏技术。与传统的LCD显示屏相比，OLED显示屏具有自发光、广视角、高对比度、低功耗、快速响应和可用于绕曲性面板等优点。OLED屏幕可以自发光，所以不需要背光灯，使得屏幕更薄且显示效果更优。常见的OLED屏幕有蓝色、黄色、白色等几种。一个常见的OLED屏幕的大小为0.96寸，像素点为128*64，所以被称为0.96 OLED屏或者12864屏。

    2.OLED如何显示一个点？

    有三种，分别为页地址模式，水平地址模式和垂直地址模式，可以通过一下表格进行配置

    内存管理

    页地址模式

    水平地址模式

    垂直地址模式

    列地址选择

    如果写入0x08（b00001000）会显示什么呢 一个字节负责一个Page的一列显示

    3.OLED显示图片

     用取模软件:

    用到的库函数：

    1. HAL_StatusTypeDef HAL_I2C_Mem_Write(I2C_HandleTypeDef *hi2c,
    2. uint16_t DevAddress,
    3. uint16_t MemAddress,
    4. uint16_t MemAddSize,
    5. uint8_t *pData,
    6. uint16_t Size,
    7. uint32_t Timeout)

    • 参数一：I2C_HandleTypeDef *hi2c，I2C设备句柄
    • 参数二：uint16_t DevAddress，目标器件的地址，七位地址必须左对齐
    • 参数三：uint16_t MemAddress，目标器件的目标寄存器地址
    • 参数四：uint16_t MemAddSize，目标器件内部寄存器地址数据长度
    • 参数五：uint8_t *pData，待写的数据首地址
    • 参数六：uint16_t Size，待写的数据长度
    • 参数七：uint32_t Timeout，超时时间
    • 返回值：HAL_StatusTypeDef，HAL状态（OK，busy，ERROR，TIMEOUT）

    向OLED写命令的封装：

    1. void Oled_Write_Cmd(uint8_t dataCmd)
    2. {
    3.     HAL_I2C_Mem_Write(&hi2c1, 0x78, 0x00, I2C_MEMADD_SIZE_8BIT,&dataCmd, 1, 0xff);
    4. }

    向OLED写数据的封装：

    1. void Oled_Write_Data(uint8_t dataData)
    2. {
    3.     HAL_I2C_Mem_Write(&hi2c1, 0x78, 0x40, I2C_MEMADD_SIZE_8BIT,&dataData, 1, 0xff);
    4. }

    接线：

    •  SCL -- PB6
    •  SDA -- PB7

    显示图片代码示例：

    1. #include "main.h"
    2. #include "i2c.h"
    3. #include "gpio.h"
    4.  
    5.  
    6. void Oled_Write_Cmd(uint8_t dataCmd)
    7. {
    8. 	
    9. 	HAL_I2C_Mem_Write(&hi2c1, 0x78, 0x00, I2C_MEMADD_SIZE_8BIT,
    10. 										&dataCmd, 1, 0xff);
    11. }
    12.  
    13. void Oled_Write_Data(uint8_t dataData)
    14. {
    15. 	HAL_I2C_Mem_Write(&hi2c1, 0x78, 0x40, I2C_MEMADD_SIZE_8BIT,
    16. 										&dataData, 1, 0xff);
    17. }
    18.  
    19. void Oled_Init(void){
    20. 	Oled_Write_Cmd(0xAE);//--display off
    21. 	Oled_Write_Cmd(0x00);//---set low column address
    22. 	Oled_Write_Cmd(0x10);//---set high column address
    23. 	Oled_Write_Cmd(0x40);//--set start line address  
    24. 	Oled_Write_Cmd(0xB0);//--set page address
    25. 	Oled_Write_Cmd(0x81); // contract control
    26. 	Oled_Write_Cmd(0xFF);//--128   
    27. 	Oled_Write_Cmd(0xA1);//set segment remap 
    28. 	Oled_Write_Cmd(0xA6);//--normal / reverse
    29. 	Oled_Write_Cmd(0xA8);//--set multiplex ratio(1 to 64)
    30. 	Oled_Write_Cmd(0x3F);//--1/32 duty
    31. 	Oled_Write_Cmd(0xC8);//Com scan direction
    32. 	Oled_Write_Cmd(0xD3);//-set display offset
    33. 	Oled_Write_Cmd(0x00);//
    34. 	
    35. 	Oled_Write_Cmd(0xD5);//set osc division
    36. 	Oled_Write_Cmd(0x80);//
    37. 	
    38. 	Oled_Write_Cmd(0xD8);//set area color mode off
    39. 	Oled_Write_Cmd(0x05);//
    40. 	
    41. 	Oled_Write_Cmd(0xD9);//Set Pre-Charge Period
    42. 	Oled_Write_Cmd(0xF1);//
    43. 	
    44. 	Oled_Write_Cmd(0xDA);//set com pin configuartion
    45. 	Oled_Write_Cmd(0x12);//
    46. 	
    47. 	Oled_Write_Cmd(0xDB);//set Vcomh
    48. 	Oled_Write_Cmd(0x30);//
    49. 	
    50. 	Oled_Write_Cmd(0x8D);//set charge pump enable
    51. 	Oled_Write_Cmd(0x14);//
    52. 	
    53. 	Oled_Write_Cmd(0xAF);//--turn on oled panel		
    54. }
    55.  
    56. void Oled_Screen_Clear(void){
    57. 	char i,n;
    58. 	Oled_Write_Cmd (0x20);                    //set memory addressing mode
    59. 	Oled_Write_Cmd (0x02);                    //page addressing mode
    60.  
    61. 	for(i=0;i<8;i++){
    62. 		Oled_Write_Cmd(0xb0+i);              
    63. 		Oled_Write_Cmd(0x00);                 
    64. 		Oled_Write_Cmd(0x10);                 
    65. 		for(n=0;n<128;n++)Oled_Write_Data(0x00); 			
    66. 	}	
    67. }
    68.  
    69. //用取模软件生成
    70. unsigned char bmpImager[] = {
    71.  
    72. /*--  调入了一幅图像：D:\无标题.bmp  --*/
    73. /*--  宽度x高度=128x64  --128x8x8*/
    74. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    75. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    76. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    77. 0x00,0x00,0xF0,0x08,0x0C,0x04,0x06,0x06,0x0C,0x04,0x0C,0xFC,0x1C,0x74,0xFC,0xF8,
    78. 0xF0,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    79. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    80. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    81. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    82. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    83. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    84. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    85. 0x00,0x00,0x01,0x07,0x04,0x88,0xF8,0x08,0x08,0x0C,0x06,0x01,0x00,0x00,0x01,0x1F,
    86. 0x7F,0xFF,0xDC,0xF8,0xE0,0xC0,0x40,0xC0,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    87. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    88. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    89. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    90. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    91. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    92. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xE0,0x10,0x18,0x08,0x0C,
    93. 0x04,0x04,0x06,0x02,0x01,0x01,0x00,0x00,0x00,0x00,0xFF,0x00,0x00,0x00,0x00,0x00,
    94. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    95. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    96. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    97. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    98. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    99. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    100. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3F,0x60,0xC0,0x80,0x80,
    101. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3F,0xE0,0x00,0x00,0x00,0x00,
    102. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    103. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    104. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    105. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    106. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    107. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    108. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
    109. 0x03,0x06,0x1C,0xF0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x07,0xFC,0x00,0x00,
    110. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x08,0x08,0x88,0xE8,0x38,0x0E,0x09,0x08,
    111. 0x08,0x88,0xE8,0x18,0x08,0x08,0x08,0x00,0x00,0xFF,0x89,0x89,0x89,0xFF,0x00,0xFF,
    112. 0x89,0x89,0x89,0x89,0xFF,0x00,0x00,0x04,0x04,0x84,0x74,0x6F,0xA4,0x24,0x24,0x24,
    113. 0x24,0xA4,0x64,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    114. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    115. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    116. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    117. 0x00,0x80,0xF0,0x1F,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x7F,0x00,0x00,
    118. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x10,0x10,0x10,0x08,0x09,0x09,0x06,0x06,
    119. 0x06,0x05,0x08,0x08,0x10,0x10,0x00,0x00,0x0C,0x03,0x10,0x10,0x10,0x1F,0x18,0x07,
    120. 0x00,0x00,0x10,0x10,0x1F,0x00,0x10,0x08,0x06,0x11,0x10,0x08,0x09,0x0A,0x06,0x06,
    121. 0x0B,0x08,0x10,0x10,0x10,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    122. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    123. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    124. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xF0,
    125. 0x1E,0x03,0x00,0x00,0xC0,0x60,0x30,0x0C,0x04,0x06,0x02,0x01,0x01,0x00,0x00,0x00,
    126. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    127. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    128. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    129. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    130. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    131. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    132. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x03,
    133. 0x1E,0x60,0x78,0x0F,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    134. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    135. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    136. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    137. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    138.  
    139.  
    140. };
    141.  
    142. void Oled_Show_Image(unsigned char *image)
    143. {
    144. 	unsigned char i; 
    145. 	unsigned int j;
    146. 	
    147. 	for(i=0;i<8;i++){
    148. 		Oled_Write_Cmd(0xB0 + i);//page0--page7
    149. 		//每个page从0列
    150. 		Oled_Write_Cmd(0x00);
    151. 		Oled_Write_Cmd(0x10);
    152. 		//0到127列，依次写入0，每写入数据，列地址自动偏移
    153. 		for(j = 128 * i; j<(128 * (i+1));j++){
    154. 			Oled_Write_Data(image[j]);
    155. 		}
    156. 	}
    157. }
    158.  
    159.  
    160. int main(void)
    161. {
    162.   /* USER CODE BEGIN 1 */
    163.  
    164.   /* USER CODE END 1 */
    165.  
    166.   /* MCU Configuration--------------------------------------------------------*/
    167.  
    168.   /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
    169.   HAL_Init();
    170.  
    171.   /* USER CODE BEGIN Init */
    172.  
    173.   /* USER CODE END Init */
    174.  
    175.   /* Configure the system clock */
    176.   SystemClock_Config();
    177.  
    178.   /* USER CODE BEGIN SysInit */
    179.  
    180.   /* USER CODE END SysInit */
    181.  
    182.   /* Initialize all configured peripherals */
    183.   MX_GPIO_Init();
    184.   MX_I2C1_Init();
    185.   /* USER CODE BEGIN 2 */
    186. 	//1. OLED初始化
    187. 	Oled_Init();
    188. 	//2. 选择一个位置
    189. 	//2.1 确认页寻址模式
    190. 	Oled_Write_Cmd(0x20);
    191. 	Oled_Write_Cmd(0x02);
    192. 	Oled_Screen_Clear();
    193. 	Oled_Show_Image(bmpImager);
    194.   /* USER CODE END 2 */
    195.  
    196.   /* Infinite loop */
    197.   /* USER CODE BEGIN WHILE */
    198.   while (1)
    199.   {
    200.     /* USER CODE END WHILE */
    201.  
    202.     /* USER CODE BEGIN 3 */
    203.   }
    204.   /* USER CODE END 3 */
    205. }
    206.  
    207.

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  • 原文地址：https://blog.csdn.net/m0_74712453/article/details/132891942