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[其他ST产品] STM32驱动0.96寸OLED液晶屏

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 楼主| lxs0026 发表于 2023-8-25 16:16 | 显示全部楼层
例如如果页地址设为B2h，低列地址为03h，而高列地址为00h，那么也就意味着开始列是PAGE2的SEG3，而RAM的获取指针定位到下图中。而输入的数据将会被写入列3的位置。
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 楼主| lxs0026 发表于 2023-8-25 16:16 | 显示全部楼层
2505264e86353b427e.png
所以确定好了显示位置，直接输出字符对应的像素数据数组就好了。
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 楼主| lxs0026 发表于 2023-8-25 16:16 | 显示全部楼层
4.字幕显示原理
字幕显示原理我们用的OLED液晶屏是由12864个发光点阵组成，即分辨率是12864。 ASCII码可以68、88、816像素，汉字一般显示像素为1616。 一般为了显示效果理想，英文和数字常选用8*16像素显示。
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 楼主| lxs0026 发表于 2023-8-25 16:17 | 显示全部楼层
二、 上下或左右的滑动显示长字符
1.水平左右移动
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  1. OLED_WR_Byte(0x2E,OLED_CMD);        //关闭滚动
    

  2. OLED_WR_Byte(0x26,OLED_CMD);        //水平向左或者右滚动 26/27
    

  3. OLED_WR_Byte(0x00,OLED_CMD);        //虚拟字节
    

  4. OLED_WR_Byte(0x00,OLED_CMD);        //起始页 0
    

  5. OLED_WR_Byte(0x07,OLED_CMD);        //滚动时间间隔
    

  6. OLED_WR_Byte(0x07,OLED_CMD);        //终止页 7
    

  7. OLED_WR_Byte(0x00,OLED_CMD);        //虚拟字节
    

  8. OLED_WR_Byte(0xFF,OLED_CMD);        //虚拟字节
    

  9. OLED_WR_Byte(0x2F,OLED_CMD);        //开启滚动
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 楼主| lxs0026 发表于 2023-8-25 16:17 | 显示全部楼层
2.垂直水平滚动
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  1. OLED_WR_Byte(0x2E,OLED_CMD);        //关闭滚动
    

  2. OLED_WR_Byte(0x26,OLED_CMD);        //水平向左或者右滚动 26/27
    

  3. OLED_WR_Byte(0x00,OLED_CMD);        //虚拟字节
    

  4. OLED_WR_Byte(0x00,OLED_CMD);        //起始页 0
    

  5. OLED_WR_Byte(0x07,OLED_CMD);        //滚动时间间隔
    

  6. OLED_WR_Byte(0x07,OLED_CMD);        //终止页 7
    

  7. OLED_WR_Byte(0x00,OLED_CMD);        //虚拟字节
    

  8. OLED_WR_Byte(0xFF,OLED_CMD);        //虚拟字节
    

  9. OLED_WR_Byte(0x2F,OLED_CMD);        //开启滚动
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 楼主| lxs0026 发表于 2023-8-25 16:17 | 显示全部楼层
3.汉字取模
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  1.   0x01,0x00,0x01,0x00,0x7F,0xFC,0x01,0x00,0x3F,0xF8,0x02,0x00,0xFF,0xFE,0x08,0x20,
    

  2.   0x10,0x10,0x2F,0xE8,0xC8,0x26,0x08,0x20,0x0F,0xE0,0x08,0x20,0x08,0x20,0x0F,0xE0,/*"春",0*/
    

  3.   0x00,0x00,0x3F,0xF0,0x20,0x10,0x20,0x10,0x28,0x50,0x24,0x50,0x22,0x90,0x22,0x90,
    

  4.   0x21,0x10,0x21,0x10,0x22,0x90,0x22,0x92,0x24,0x4A,0x48,0x4A,0x40,0x06,0x80,0x02,/*"风",1*/
    

  5.   0x10,0x90,0x10,0x90,0x10,0x90,0x12,0x92,0xFD,0x94,0x10,0x98,0x30,0x90,0x39,0x98,
    

  6.   0x56,0x94,0x54,0x92,0x90,0x90,0x10,0x90,0x11,0x12,0x11,0x12,0x12,0x12,0x14,0x0E,/*"桃",2*/
    

  7.   0x01,0x00,0x01,0x00,0x7F,0xFC,0x03,0x80,0x05,0x40,0x09,0x20,0x31,0x18,0xC1,0x06,
    

  8.   0x0F,0xE0,0x00,0x40,0x00,0x80,0xFF,0xFE,0x01,0x00,0x01,0x00,0x05,0x00,0x02,0x00,/*"李",3*/
    

  9.   0x08,0x20,0x08,0x20,0xFF,0xFE,0x08,0x20,0x00,0x00,0x08,0x88,0x08,0x90,0x10,0xA0,
    

  10.   0x30,0xC0,0x50,0x80,0x91,0x80,0x12,0x82,0x14,0x82,0x10,0x82,0x10,0x7E,0x10,0x00,/*"花",4*/
    

  11.   0x00,0x00,0x7F,0xFC,0x08,0x20,0x08,0x20,0x08,0x20,0x08,0x20,0x08,0x20,0xFF,0xFE,
    

  12.   0x08,0x20,0x08,0x20,0x08,0x20,0x08,0x20,0x10,0x20,0x10,0x20,0x20,0x20,0x40,0x20,/*"开",5*/
    

  13.   0x02,0x00,0x01,0x00,0xFF,0xFE,0x08,0x80,0x08,0x80,0x10,0xF8,0x11,0x08,0x31,0x48,
    

  14.   0x52,0x28,0x95,0x10,0x11,0x10,0x10,0xA0,0x10,0x40,0x10,0xA0,0x11,0x18,0x16,0x06,/*"夜",6*/
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 楼主| lxs0026 发表于 2023-8-25 16:17 | 显示全部楼层
4.main函数
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  1. #include "delay.h"
    

  2. #include "sys.h"
    

  3. #include "oled.h"
    

  4. #include "gui.h"
    

  5. #include "test.h"
    

  6. int main(void)
    

  7. {        
    

  8.         delay_init();                           //延时函数初始化          
    

  9.         NVIC_Configuration();            //设置NVIC中断分组2:2位抢占优先级，2位响应优先级         
    

  10.         OLED_Init();                                 //初始化OLED  
    

  11.         OLED_Clear(0);             //清屏（全黑）
    

  12.         OLED_WR_Byte(0x2E,OLED_CMD);        //关闭滚动
    

  13.     OLED_WR_Byte(0x27,OLED_CMD);        //水平向左或者右滚动 26/27
    

  14.     OLED_WR_Byte(0x00,OLED_CMD);        //虚拟字节
    

  15.         OLED_WR_Byte(0x00,OLED_CMD);        //起始页 0
    

  16.         OLED_WR_Byte(0x07,OLED_CMD);        //滚动时间间隔
    

  17.         OLED_WR_Byte(0x07,OLED_CMD);        //终止页 7
    

  18.         OLED_WR_Byte(0x00,OLED_CMD);        //虚拟字节
    

  19.         OLED_WR_Byte(0xFF,OLED_CMD);        //虚拟字节
    

  20.         TEST_MainPage();
    

  21.         OLED_WR_Byte(0x2F,OLED_CMD);        //开启滚动
    

  22. }
    


  23.
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 楼主| lxs0026 发表于 2023-8-25 16:17 | 显示全部楼层
5.显示数据
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  1. void TEST_MainPage(void)
    

  2. {        
    

  3.         //GUI_ShowString(28,0,"Harriet",16,1);
    

  4.         GUI_ShowCHinese(10,20,16,"春风桃李花开夜",1);
    

  5.         //GUI_ShowString(40,32,"64X128",16,1);
    

  6.         delay_ms(1500);                
    

  7.         delay_ms(1500);
    

  8. }
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 楼主| lxs0026 发表于 2023-8-25 16:18 | 显示全部楼层
6.运行结果
2035064e863c33b586.png
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 楼主| lxs0026 发表于 2023-8-25 16:18 | 显示全部楼层
三、 显示AHT20的温度和湿度
1.显示温湿度代码


复制
  1. void read_AHT20(void)
    

  2. {
    

  3. uint8_t   i;
    

  4. for(i=0; i<6; i++)
    

  5. {
    

  6. readByte[i]=0;
    

  7. }
    


  8. 

  9. //-------------
    

  10. I2C_Start();
    

  11. I2C_WriteByte(0x71);
    

  12. ack_status = Receive_ACK();
    

  13. readByte[0]= I2C_ReadByte();
    

  14. Send_ACK();
    

  15. readByte[1]= I2C_ReadByte();
    

  16. Send_ACK();
    


  17. 

  18. readByte[2]= I2C_ReadByte();
    

  19. Send_ACK();
    


  20. 

  21. readByte[3]= I2C_ReadByte();
    

  22. Send_ACK();
    


  23. 

  24. readByte[4]= I2C_ReadByte();
    

  25. Send_ACK();
    

  26. readByte[5]= I2C_ReadByte();
    

  27. SendNot_Ack();
    

  28. //Send_ACK();
    


  29. 

  30. I2C_Stop();
    


  31. 

  32. //--------------
    

  33. if( (readByte[0] & 0x68) == 0x08 )
    

  34. {
    

  35. H1 = readByte[1];
    

  36. H1 = (H1<<8) | readByte[2];
    

  37. H1 = (H1<<8) | readByte[3];
    

  38. H1 = H1>>4;
    


  39. 

  40. H1 = (H1*1000)/1024/1024;
    


  41. 

  42. T1 = readByte[3];
    

  43. T1 = T1 & 0x0000000F;
    

  44. T1 = (T1<<8) | readByte[4];
    

  45. T1 = (T1<<8) | readByte[5];
    


  46. 

  47. T1 = (T1*2000)/1024/1024 - 500;
    


  48. 

  49. AHT20_OutData[0] = (H1>>8) & 0x000000FF;
    

  50. AHT20_OutData[1] = H1 & 0x000000FF;
    


  51. 

  52. AHT20_OutData[2] = (T1>>8) & 0x000000FF;
    

  53. AHT20_OutData[3] = T1 & 0x000000FF;
    

  54. }
    

  55. else
    

  56. {
    

  57. AHT20_OutData[0] = 0xFF;
    

  58. AHT20_OutData[1] = 0xFF;
    


  59. 

  60. AHT20_OutData[2] = 0xFF;
    

  61. AHT20_OutData[3] = 0xFF;
    

  62. printf("lyy");
    


  63. 

  64. }
    

  65. /*通过串口显示采集得到的温湿度
    

  66. printf("\r\n");
    

  67. printf("温度:%d%d.%d",T1/100,(T1/10)%10,T1%10);
    

  68. printf("湿度:%d%d.%d",H1/100,(H1/10)%10,H1%10);
    

  69. printf("\r\n");*/
    

  70. t=T1/10;
    

  71. t1=T1%10;
    

  72. a=(float)(t+t1*0.1);
    

  73. h=H1/10;
    

  74. h1=H1%10;
    

  75. b=(float)(h+h1*0.1);
    

  76. sprintf(strTemp,"%.1f",a);   //调用Sprintf函数把DHT11的温度数据格式化到字符串数组变量strTemp中  
    

  77.     sprintf(strHumi,"%.1f",b);    //调用Sprintf函数把DHT11的湿度数据格式化到字符串数组变量strHumi中  
    

  78. GUI_ShowCHinese(16,00,16,"温湿度显示",1);
    

  79. GUI_ShowCHinese(16,20,16,"温度",1);
    

  80. GUI_ShowString(53,20,strTemp,16,1);
    

  81. GUI_ShowCHinese(16,38,16,"湿度",1);
    

  82. GUI_ShowString(53,38,strHumi,16,1);
    

  83. delay_ms(1500); 
    

  84. delay_ms(1500);
    

  85. }
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 楼主| lxs0026 发表于 2023-8-25 16:19 | 显示全部楼层
2.添加点阵字
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  1. "温",0x00,0x00,0x23,0xF8,0x12,0x08,0x12,0x08,0x83,0xF8,0x42,0x08,0x42,0x08,0x13,0xF8,
    

  2.   0x10,0x00,0x27,0xFC,0xE4,0xA4,0x24,0xA4,0x24,0xA4,0x24,0xA4,0x2F,0xFE,0x00,0x00,/*"温",0*/
    

  3.         "度",0x01,0x00,0x00,0x80,0x3F,0xFE,0x22,0x20,0x22,0x20,0x3F,0xFC,0x22,0x20,0x22,0x20,
    

  4.   0x23,0xE0,0x20,0x00,0x2F,0xF0,0x24,0x10,0x42,0x20,0x41,0xC0,0x86,0x30,0x38,0x0E,/*"度",0*/
    

  5.         "湿",0x00,0x00,0x27,0xF8,0x14,0x08,0x14,0x08,0x87,0xF8,0x44,0x08,0x44,0x08,0x17,0xF8,
    

  6.   0x11,0x20,0x21,0x20,0xE9,0x24,0x25,0x28,0x23,0x30,0x21,0x20,0x2F,0xFE,0x00,0x00,/*"湿",0*/
    

  7.         "显",0x00,0x00,0x1F,0xF0,0x10,0x10,0x10,0x10,0x1F,0xF0,0x10,0x10,0x10,0x10,0x1F,0xF0,
    

  8.   0x04,0x40,0x44,0x44,0x24,0x44,0x14,0x48,0x14,0x50,0x04,0x40,0xFF,0xFE,0x00,0x00,/*"显",0*/
    

  9.         "示",0x00,0x00,0x3F,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0xFE,0x01,0x00,
    

  10.   0x01,0x00,0x11,0x10,0x11,0x08,0x21,0x04,0x41,0x02,0x81,0x02,0x05,0x00,0x02,0x00,/*"示",0*/
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 楼主| lxs0026 发表于 2023-8-25 16:19 | 显示全部楼层
3.main函数
复制
  1. #include "delay.h"
    

  2. #include "usart.h"
    

  3. #include "bsp_i2c.h"
    

  4. #include "sys.h"
    


  5. 

  6. #include "oled.h"
    

  7. #include "gui.h"
    

  8. #include "test.h"
    


  9. 

  10. int main(void)
    

  11. {        
    

  12.         delay_init();                           //延时函数初始化              
    

  13.         uart_init(115200);         
    

  14.         IIC_Init();
    

  15.                   
    

  16.         NVIC_Configuration();            //设置NVIC中断分组2:2位抢占优先级，2位响应优先级         
    

  17.         OLED_Init();                                 //初始化OLED  
    

  18.         OLED_Clear(0); 
    

  19.         while(1)
    

  20.         {
    

  21.                 //printf("温度湿度显示");
    

  22.                 read_AHT20_once();
    

  23.                 OLED_Clear(0); 
    

  24.                 delay_ms(1500);
    

  25.   }
    

  26. }
    


  27. 


  28. 


  29.
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 楼主| lxs0026 发表于 2023-8-25 16:19 | 显示全部楼层
4.运行结果
3985564e864120f420.png
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tian111 发表于 2023-8-25 22:00 | 显示全部楼层
先得实现一个向SSD1306写入一个字节的函数
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daichaodai 发表于 2023-8-26 09:15 来自手机 | 显示全部楼层
OLED功耗低，显示效果好。
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