【急求！！！】 一个arduino控制频率发生器的问题。

Robbie

    因为要弄个比较特殊的频率发生器，而且要求实时显示输出状态， 第一时间就想到了arduino。 和朋友讨论后，朋友说很简单，  然后写了一段程序，程序如下。

1. 
   
2. float ontime =100;
   
3. float bps =50;
   
4. float offtime =(1000000.0/bps)-ontime;
   
5. int time=0;
   
6. unsigned long currentMicros;
   
7. long previousMicros = 0;
   
8. int i=1;
   
9. 
   
10. void setup(){
    
11. 
    
12.   pinMode(3,OUTPUT);//out put
    
13.   pinMode(9,INPUT);// input +ontime
    
14.   pinMode(8,INPUT);// input -ontime
    
15.   pinMode(10,INPUT);// input +bps
    
16.   pinMode(11,INPUT);// input -bps
    
17. }
    
18. 
    
19. void loop()
    
20. 
    
21. {
    
22.   if(digitalRead(9)==LOW)
    
23. {
    
24.     if(ontime<750)
    
25.    {
    
26.      ontime=ontime+0.1;
    
27.      offtime =(1000000.0/bps)-ontime;
    
28.     }   
    
29.   }
    
30.   
    
31.    if(digitalRead(8)==LOW)
    
32.   {
    
33.     if(ontime>10)
    
34.    {
    
35.      ontime=ontime-0.1;
    
36.      offtime =(1000000.0/bps)-ontime;
    
37.     }
    
38.   }
    
39.   
    
40.    if(digitalRead(10)==LOW)
    
41.   {
    
42.     if(bps<1000)
    
43.    {
    
44.      bps=bps+0.05;
    
45.      offtime =(1000000.0/bps)-ontime;
    
46.     }
    
47.   }
    
48.   
    
49.    if(digitalRead(11)==LOW)
    
50.   {
    
51.     if(bps>10)
    
52.    {
    
53.      bps=bps-0.05;
    
54.      offtime =(1000000.0/bps)-ontime;
    
55.     }
    
56.   }
    
57.   
    
58.   currentMicros = micros();//read present time
    
59.   time = currentMicros - previousMicros;
    
60.   
    
61.   if(i==1)
    
62.   {
    
63.   if(time>ontime)
    
64.   {
    
65.     previousMicros = currentMicros;//clean time difference
    
66.     time=0;
    
67.     turnoff();
    
68.     i=0;
    
69.     }
    
70.   }
    
71.   
    
72. if(i==0)
    
73. {
    
74. if(time>offtime)
    
75.     {
    
76.       previousMicros = currentMicros;//clean time difference
    
77.       time=0;
    
78.       turnon();   
    
79.       i=1;   
    
80.     }   
    
81. }
    
82. }
    
83. 
    
84. void turnon()
    
85. {
    
86.   digitalWrite(3,HIGH);
    
87. }
    
88. 
    
89. void turnoff()
    
90. {
    
91.   digitalWrite(3,LOW);
    
92. }

复制代码

烧上去，的确能用了。 输出达到要求。

但是还差显示呢。。。

我自己弄了U8G的库 ， 然后写好开机画面， 显示的内容。

然后，程序变成了这样。

1. #include <U8glib.h>
   
2. U8GLIB_ST7920_128X64_4X u8g(A0, 13, 12);
   
3. int hold=0;
   
4. float ontime =100;
   
5. float bps =10;
   
6. float offtime =(1000000.0/bps)-ontime;
   
7. float duty =ontime/(1000000.0/bps)*100;
   
8. int time=0;
   
9. unsigned long currentMicros;
   
10. long previousMicros = 0;
    
11. int i=1;
    
12. int output=3;
    
13. int key_oadd=9;
    
14. int key_osub=8;
    
15. int key_badd=10;
    
16. int key_bsub=11;
    
17. 
    
18. const uint8_t L[] PROGMEM = {
    
19. 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    
20. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    
21. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    
22. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x00,0x00,0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    
23. 0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x00,0x00,0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x00,0x00,0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x00,0x00,0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x00,0x00,0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    
24. 0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x00,0x00,0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    
25. 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    
26. 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    
27. 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    
28. 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFD,0xF4,0x71,0x74,0x22,0x18,0x83,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x45,0xEF,0x75,0xF6,0xD3,0xEF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x44,0x4F,0x75,0xF6,0x99,0xEF,0xFF,0xFF,0xFF,
    
29. 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x45,0xCF,0x04,0x76,0x3C,0xEF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x45,0xEF,0x75,0xF6,0x9E,0x6F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x44,0x71,0x75,0xE2,0xD8,0xEF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    
30. 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    
31. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x78,0x40,0x12,0x00,0x87,0x00,0x80,0x00,0x00,0x00,0x80,0x00,0x00,0x00,0x00,0x00,
    
32. 0x44,0x00,0x02,0x00,0x82,0x00,0x80,0x00,0x00,0x00,0x80,0x00,0x00,0x00,0x00,0x00,0x42,0x47,0x97,0xB8,0x82,0x59,0xE6,0x2A,0xA2,0x59,0xC6,0x28,0x00,0x00,0x00,0x00,0x42,0x48,0x92,0x04,0x82,0x64,0x89,0x33,0x22,0x64,0x89,0x30,0x00,0x00,0x00,0x00,0x42,0x48,0x92,0x1C,0x82,0x44,0x8F,0x22,0x22,0x44,0x8F,0x20,0x00,0x00,0x00,0x00,
    
33. 0x42,0x48,0x92,0x24,0x82,0x44,0x88,0x22,0x22,0x44,0x88,0x20,0x00,0x00,0x00,0x00,0x44,0x49,0x92,0x24,0x82,0x44,0x88,0x22,0x26,0x44,0x88,0x20,0x00,0x00,0x00,0x00,0x78,0x46,0x91,0x9C,0x87,0x44,0x67,0x22,0x1A,0x78,0x67,0x20,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x40,0x00,0x00,0x00,0x00,0x00,0x00,
    
34. 0x00,0x0F,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x40,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    
35. };
    
36. 
    
37. void draw( )  
    
38. {
    
39. u8g.drawStr(0,12,"Digital interrupter");
    
40. u8g.drawLine(0,20,76,20); u8g.drawLine(0,21,76,21);
    
41. u8g.drawLine(77,19,101,7); u8g.drawLine(77,20,101,8);
    
42. u8g.drawLine(102,7,127,7); u8g.drawLine(102,8,127,8);
    
43. u8g.drawStr(6,30,"bps:");
    
44. u8g.setPrintPos( 85, 30);
    
45. u8g.print(bps);
    
46. u8g.drawStr(6,45,"ontime:");
    
47. u8g.drawStr(118,45,"us");
    
48. u8g.setPrintPos( 85, 45);
    
49. u8g.print(ontime);
    
50. u8g.drawStr(6,60,"duty");
    
51. u8g.drawStr(28,60,"cycle:");
    
52. u8g.drawStr(118,60,"%");
    
53. u8g.setPrintPos( 85, 60);
    
54. u8g.print(duty);
    
55. 
    
56. }
    
57. 
    
58. void turnon()
    
59. {
    
60.   digitalWrite(output,HIGH);
    
61. }
    
62. void turnoff()
    
63. {
    
64.   digitalWrite(output,LOW);
    
65. }
    
66. 
    
67. void setup(){
    
68.   pinMode(output,OUTPUT);//out put
    
69.   pinMode(key_oadd,INPUT);// input +ontime
    
70.   pinMode(key_osub,INPUT);// input -ontime
    
71.   pinMode(key_badd,INPUT);// input +bps
    
72.   pinMode(key_bsub,INPUT);// input -bps
    
73. 
    
74.    u8g.setFont(u8g_font_5x7);
    
75.     u8g.firstPage();  
    
76.    do {
    
77.     u8g.drawBitmapP( 0, 0, 16, 64, L);
    
78.     }
    
79.    while( u8g.nextPage() );
    
80.    delay(5000);
    
81. }
    
82. 
    
83. void loop()
    
84. {
    
85.   if(digitalRead(key_oadd)==LOW)
    
86.   {
    
87.     if(ontime<750)
    
88.     {ontime=ontime+0.05;
    
89.    offtime =(1000000.0/bps)-ontime;
    
90.    duty =ontime/(1000000.0/bps)*100;//refresh
    
91.     }   
    
92.   }
    
93.   
    
94.    if(digitalRead(key_osub)==LOW)
    
95.   {
    
96.     if(ontime>10)
    
97.     {ontime=ontime-0.05;
    
98.    offtime =(1000000.0/bps)-ontime;
    
99.    duty =ontime/(1000000.0/bps)*100;//refresh
    
100.     }
     
101.   }
     
102.   
     
103.    if(digitalRead(key_badd)==LOW)
     
104.   {
     
105.     if(bps<1000)
     
106.     {bps=bps+0.05;
     
107.    offtime =(1000000.0/bps)-ontime;
     
108.    duty =ontime/(1000000.0/bps)*100;//refresh
     
109.     }
     
110.   }
     
111.   
     
112.    if(digitalRead(key_bsub)==LOW)
     
113.   {
     
114.     if(bps>10)
     
115.     {bps=bps-0.05;
     
116.    offtime =(1000000.0/bps)-ontime;
     
117.    duty =ontime/(1000000.0/bps)*100;//refresh
     
118.     }
     
119.   }
     
120.   
     
121.   currentMicros = micros();//read present time
     
122.   time = currentMicros - previousMicros;
     
123.   
     
124.   if(i==1)
     
125.   {
     
126.   if(time>ontime)
     
127.   {
     
128.     previousMicros = currentMicros;//clean time difference
     
129.     time=0;
     
130.     turnoff();
     
131.     i=0;
     
132.     }
     
133.   }
     
134.   
     
135. if(i==0)
     
136. {
     
137. if(time>offtime)
     
138.     {
     
139.       previousMicros = currentMicros;//clean time difference
     
140.       time=0;
     
141.       turnon();   
     
142.       i=1;   
     
143.     }   
     
144. }
     
145. if(hold==0)
     
146.    {
     
147.      u8g.firstPage( );  
     
148.      do
     
149.      {
     
150.        draw( );
     
151.      }
     
152.      while( u8g.nextPage( ));
     
153.    }  
     
154. }

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然后，做出来效果是这样，


虽然显示是正常了，可是输出完全不是这么一回事（无输出？ 或者各种奇怪的输出。。。）。。。   
朋友说是要加上中断了，不然12864的刷新会影响输出。。。

大神求救\("▔□▔)/！！！

hi55234

u8g，俺心中的痛啊，这库加默认sd库是可以显示了，也能存储了，可是
~~~~

模拟口读取的值就走样了~~~~

看楼主没用SD库，难道也是模拟口取值有问题~~~