【Arduino】168种传感器模块系列实验（123）---P10V706LED屏模组

eagler8

1. #define LIN_OUT 1
   
2. #define FHT_N 128 // set to 256 point fht 128
   
3. 
   
4. #include <FHT.h> // include the library
   
5. #include <SPI.h>
   
6. #include <DMD.h>        //
   
7. #include <TimerOne.h>   //
   
8. #include "SystemFont5x7.h"
   
9. #include "Arial_black_16.h"
   
10. 
    
11. #define DISPLAYS_ACROSS 1
    
12. #define DISPLAYS_DOWN 1
    
13. DMD dmd(DISPLAYS_ACROSS, DISPLAYS_DOWN);
    
14. 
    
15. //-------------------------------------------------------------------------------
    
16. // Change this to MONO to for a one-channel full-display or STEREO for two-channel
    
17. //
    
18. String displayType = "MONO";
    
19. //
    
20. // Change this to MONO to for a one-channel full-display or STEREO for two-channel
    
21. //-------------------------------------------------------------------------------
    
22. 
    
23. byte sampleR[64]; //64
    
24. byte sampleL[64];
    
25. unsigned long startTime, endTime, oldTime;
    
26. String displayText = "DY";
    
27. String sampleSet;
    
28. int displaySize;
    
29. 
    
30. void ScanDMD()
    
31. {
    
32.   dmd.scanDisplayBySPI();
    
33. }
    
34. 
    
35. void setup() {
    
36. 
    
37.   if (displayType == "MONO") {displaySize = 32;} else {displaySize = 16;}
    
38.   
    
39.   //TIMSK0 = 0; // turn off timer0 for lower jitter
    
40.   ADCSRA = 0xe7; // set the adc to free running mode
    
41.   ADMUX = 0x45; // use adc5
    
42.   DIDR0 = 0x20; // turn off the digital input for adc5
    
43. 
    
44.   Timer1.initialize( 5000 );           //period in microseconds to call ScanDMD. Anything longer than 5000 (5ms) and you can see flicker.
    
45.   Timer1.attachInterrupt( ScanDMD );   //attach the Timer1 interrupt to ScanDMD which goes to dmd.scanDisplayBySPI()
    
46.   dmd.clearScreen( true );   //true is normal (all pixels off), false is negative (all pixels on)
    
47. 
    
48.   dmd.selectFont(Arial_Black_16); // show off who wrote the app... :p
    
49.   dmd.drawString(6,1,"DY",2,GRAPHICS_NORMAL);
    
50.   delay(3000);
    
51.   dmd.drawString(6,1,"CJ",2,GRAPHICS_NORMAL);
    
52.   delay(3000);
    
53.   dmd.selectFont(SystemFont5x7);
    
54.   dmd.drawString(2,0,"Audio",5,GRAPHICS_NORMAL);
    
55.   dmd.drawString(2,9,"Analy",5,GRAPHICS_NORMAL);
    
56.   delay(3000);
    
57. 
    
58. }
    
59. 
    
60. void loop() {
    
61. 
    
62.   startTime = millis();
    
63.   sampleSet = "L";
    
64.   sampleInput();
    
65.   sampleFix();
    
66.   if (displaySize == 16) {
    
67.     sampleSet = "R";
    
68.     sampleInput();
    
69.     sampleFix();
    
70.   }
    
71.   drawSpectrum();
    
72.   endTime = millis();
    
73. }
    
74. 
    
75. void drawSpectrum () {
    
76. 
    
77.   if (displaySize == 16) {
    
78.     dmd.clearScreen(true);
    
79.     for (int disX; disX < 16; disX++) {
    
80.       dmd.drawLine (disX, 16, disX, 16-sampleL[disX+1], GRAPHICS_NORMAL );
    
81.       dmd.drawLine (17+disX, 16, 17+disX, 16-sampleR[disX+1], GRAPHICS_NORMAL );
    
82.     }
    
83.   }
    
84.   else {
    
85.     dmd.clearScreen(true);
    
86.     for (int disX; disX < 33; disX++) {
    
87.       dmd.drawLine (disX, 16, disX, 16-sampleL[disX+1], GRAPHICS_NORMAL );
    
88.     }
    
89.   }
    
90. }
    
91. 
    
92. void sampleInput() {
    
93.   cli();  // UDRE interrupt slows this way down on arduino1.0
    
94.   for (int x=0; x<FHT_N; x++) {
    
95.     while(!(ADCSRA & 0x10)); // wait for adc to be ready
    
96.     ADCSRA = 0xf5; // restart adc
    
97.     if (sampleSet == "L") {
    
98.       ADMUX = 0x45; // use adc5
    
99.     } else {
    
100.       ADMUX = 0x44; // use adc4
     
101.     }
     
102.     byte m = ADCL; // fetch adc data
     
103.     byte j = ADCH;
     
104.     int k = (j << 8) | m; // form into an int 8
     
105.     k -= 0x0200; // form into a signed int
     
106.     k <<= 6; // form into a 16b signed int 6
     
107.     fht_input[x] = k; // put real data into bins
     
108.   }
     
109.   sei();
     
110.   fht_window(); // window the data for better frequency response
     
111.   fht_reorder(); // reorder the data before doing the fht
     
112.   fht_run(); // process the data in the fht
     
113.   fht_mag_lin();
     
114. 
     
115. }
     
116. 
     
117. void sampleFix() {
     
118. 
     
119.   int newPos;
     
120.   float fhtCount, tempY;
     
121.   for (int x=0; x < displaySize; x++) {
     
122.     fhtCount = FHT_N/2;  // 2
     
123.     newPos = x * (fhtCount / displaySize); // single channel half-display 15-LED wide
     
124.     tempY = fht_lin_out[newPos];
     
125.     if (sampleSet == "L") {
     
126.     sampleL[x] = ((tempY/256)*16); // single channel full 16 LED high
     
127.     } else {
     
128.     sampleR[x] = ((tempY/256)*16); // single channel full 16 LED high
     
129.     }
     
130.   }  
     
131. }

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eagler8