单片机与pc串口实验

1. #include<reg52.h>
   
2. #define uchar unsigned char
   
3. #define uint unsigned int
   
4. uchar code SEG7[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
   
5. sbit D=P1^0;
   
6. //========
   
7. uchar code as[]=" Receving Data:\0";
   
8. uchar a=0x30,b;
   
9. //=========
   
10. void init(void)
    
11. {
    
12. TMOD=0x20;
    
13. TH1=0xfd;
    
14. TL1=0xfd;
    
15. SCON=0x50;
    
16. TR1=1;
    
17. ES=1;
    
18. EA=1;
    
19. }
    
20. //=========
    
21. void delay(uint k)
    
22. {
    
23. uint i,j;
    
24. for(i=0;i<k;i++){
    
25. for(j=0;j<121;j++)
    
26. {;}}
    
27. }
    
28. //==========
    
29. void main(void)
    
30. {uchar i;
    
31. init();
    
32. while(1)
    
33. {
    
34. D=1;P0=SEG7[(a-0x30)/10];D=0;P2=0x7f;delay(2);
    
35. D=1;P0=SEG7[(a-0x30)%10];D=0;P2=0xbf;delay(2);
    
36. if(RI)
    
37. {
    
38. RI=0;i=0;
    
39. while(as[i]!='\0'){SBUF=as[i];while(!TI);TI=0;i++;}   
    
40. SBUF=b;while(!TI);TI=0;
    
41. EA=1;
    
42.         }
    
43. }
    
44. }
    
45. //=========
    
46. void serial_serve(void) interrupt 4
    
47. {
    
48. a=SBUF;
    
49. b=a;
    
50. EA=0;
    
51. }

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再来一个复杂点的

1. #include<reg52.h>
   
2. #define uchar unsigned char
   
3. #define uint unsigned int
   
4. //======================
   
5. uchar code SEG7[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
   
6. uchar code ACT[4]={0xfe,0xfd,0xfb,0xf7};
   
7. sbit D=P3^7;
   
8. //====================
   
9. sbit D0=P1^0;
   
10. sbit D1=P1^1;
    
11. sbit D2=P1^2;
    
12. sbit D3=P1^3;
    
13. sbit D4=P1^4;
    
14. sbit D5=P1^5;
    
15. sbit D6=P1^6;
    
16. sbit D7=P1^7;
    
17. #define ON 0
    
18. #define OFF 1
    
19. uchar a[2];
    
20. uchar cnt;
    
21. bit outflag;
    
22. //================
    
23. void delay(uint k)
    
24. {
    
25. uint i,j;
    
26. for(i=0;i<k;i++){
    
27. for(j=0;j<121;j++)
    
28. {;}}
    
29. }
    
30. //============
    
31. void init(void)
    
32. {
    
33. TMOD=0x20;
    
34. TH1=0xfd;
    
35. TL1=0xfd;
    
36. SCON=0x50;
    
37. TR1=1;
    
38. ES=1;
    
39. EA=1;
    
40. }
    
41. //==============
    
42. void main(void)
    
43. {
    
44. init();
    
45. while(1)
    
46. {
    
47. D=1;P0=SEG7[a[0]];D=0;P2=ACT[1];delay(2);
    
48. D=1;P0=SEG7[a[1]];D=0;P2=ACT[0];delay(2);
    
49. if(outflag==1)
    
50. {
    
51. switch(a[0])
    
52. {
    
53. case 1:if(a[1]==1)D0=ON;else D0=OFF;break;
    
54. case 2:if(a[1]==1)D1=ON;else D1=OFF;break;
    
55. case 3:if(a[1]==1)D2=ON;else D2=OFF;break;
    
56. case 4:if(a[1]==1)D3=ON;else D3=OFF;break;
    
57. case 5:if(a[1]==1)D4=ON;else D4=OFF;break;
    
58. case 6:if(a[1]==1)D5=ON;else D5=OFF;break;
    
59. case 7:if(a[1]==1)D6=ON;else D6=OFF;break;
    
60. case 8:if(a[1]==1)D7=ON;else D7=OFF;break;
    
61. default:break;
    
62. }
    
63. outflag=0;
    
64.      }
    
65.   }
    
66. }
    
67. //==============
    
68. void serial_serve(void) interrupt 4
    
69. {
    
70. uchar temp;
    
71. RI=0;
    
72. EA=0;
    
73. temp=SBUF;
    
74. switch(cnt)
    
75. {
    
76. case 0:if(temp=='#')cnt=1;else outflag=0;break;
    
77. case 1:if((temp>0x30)&&(temp<0x39)){a[0]=temp-0x30;cnt=2;}
    
78. else outflag=0;break;
    
79. case 2:if(temp=='(')cnt=3;
    
80. else outflag=0;break;
    
81. case 3:if((temp>=0x30)&&(temp<=0x38)){a[1]=temp-0x30;cnt=4;}
    
82. else outflag=0;break;
    
83. case 4:if(temp==')'){cnt=0;outflag=1;}
    
84. else outflag=0;break;
    
85. default:break;
    
86. }
    
87. EA=1;
    
88. }

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请问这个后来实现的效果截图有吗