QR Code Recognition

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1#include "VidorGraphics.h"
2#include "VidorCamera.h"
3
4VidorCamera vcam;
5
6#define MAXDIM 10
7
8static uint16_t x[QR_PT_DET_NUM], y[QR_PT_DET_NUM];
9
10struct qrPtn {
11
12  uint16_t x[QR_PT_DET_NUM];
13
14  uint16_t y[QR_PT_DET_NUM];
15};
16
17static qrPtn qrBufferPtn[MAXDIM];
18
19uint16_t count = 0, last;
20
21void setup() {
22
23  Serial.begin(9600);
24
25  // wait for the serial monitor to open,
26
27  // if you are powering the board from a USB charger remove the next line
28
29  while (!Serial);
30
31  if (!FPGA.begin()) {
32
33    Serial.println("Initialization failed!");
34
35    while (1) {}
36
37  }
38
39  /**
40
41    begin() enable the I2C communication and initialize the display for the camera
42
43  */
44
45  if (!vcam.begin()) {
46
47    Serial.println("Camera begin failed");
48
49    while (1) {}
50
51  }
52
53  /**
54
55      qrrec.begin(); enable the QR code recognition
56
57  */
58
59  vcam.qrrec.begin();
60
61  delay(4000);
62
63  Serial.println("Power ON");
64}
65
66void loop()  {
67
68  /**
69
70     qrrec.readQRCode(); get, if available, the coordinates of the QR code in the screen
71
72  */
73
74  vcam.qrrec.readQRCode();
75
76  for (int i = 0; i < QR_PT_DET_NUM; i++) {
77
78    if (vcam.qrrec.qr.pt[i].valid) {
79
80      x[i] = (vcam.qrrec.qr.pt[i].xs + vcam.qrrec.qr.pt[i].xe) / 2;
81
82      y[i] = (vcam.qrrec.qr.pt[i].ys + vcam.qrrec.qr.pt[i].ye) / 2;
83
84      vcam.vgfx.Cross(x[i], y[i], 65535);
85
86    }
87
88  }
89
90  last = count % MAXDIM;
91
92  for (int i = 0; i < QR_PT_DET_NUM; i++) {
93
94    vcam.vgfx.Cross(qrBufferPtn[last].x[i], qrBufferPtn[last].y[i], 0, 0);
95
96    qrBufferPtn[last].x[i] = x[i];
97
98    qrBufferPtn[last].y[i] = y[i];
99
100  }
101
102  count++;
103}