标题: 为什么单片机+LCD1602无法显示?并且P0.5端口有问题，怎么解决？ [打印本页]

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作者: IJLG    时间: 2020-3-24 13:25
标题: 为什么单片机+LCD1602无法显示?并且P0.5端口有问题，怎么解决？

1. #define LCD_DB P0
   
2. sbit LCD_E=P2^0;
   
3. sbit LCD_RW=P2^1;
   
4. sbit LCD_RS=P2^2;
   
5. u8 disp[]=" dripping speed ";
   
6. 
   
7. void LCD_init()
   
8. {
   
9. LCD_write_command(0x38);  
   
10. LCD_write_command(0x0c);  
    
11. LCD_write_command(0x06);  
    
12. LCD_write_command(0x01);
    
13. LCD_write_command(0x80);
    
14. }
    
15. 
    
16. void LCD_write_command(unsigned char com)
    
17. {
    
18. LCD_E=0;   
    
19. LCD_RS=0;
    
20. [color=#007000][backcolor=rgb(255, 255, 255)][font=Tahoma,] LCD[/font][/backcolor][/color]_RW=0;
    
21. LCD_DB=com;
    
22. delay(1000);
    
23. LCD_E=1;
    
24. delay(5000)
    
25. LCD_E=0;
    
26. }
    
27. 
    
28. void LCD_write_data(unsigned char dat)
    
29. {
    
30. LCD_E=0;
    
31. LCD_RS=1;
    
32. LCD_RW=0;
    
33. LCD_DB=dat
    
34. delay(1000);
    
35. LCD_E=1
    
36. delay(5000)
    
37. LCD_E=0;
    
38. }
    
39.          
    
40. void main()
    
41. {
    
42. u8 i;
    
43. LCD_init();
    
44. for(i=0;i<16;i++)
    
45. {
    
46.   LCD_write_data(disp[i]);
    
47. }
    
48. while(1);
    
49. }

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