GIGA Display Shield Camera Connector Guide

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1#define ARDUCAM_CAMERA_HM01B0

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1#include "arducam_dvp.h"
2#include "Arduino_H7_Video.h"
3#include "dsi.h"
4#include "SDRAM.h"
5
6// This example only works with Greyscale cameras (due to the palette + resize&rotate algo)
7#define ARDUCAM_CAMERA_HM01B0
8
9#ifdef ARDUCAM_CAMERA_HM01B0
10#include "Himax_HM01B0/himax.h"
11HM01B0 himax;
12Camera cam(himax);
13#define IMAGE_MODE CAMERA_GRAYSCALE
14#elif defined(ARDUCAM_CAMERA_HM0360)
15#include "Himax_HM0360/hm0360.h"
16HM0360 himax;
17Camera cam(himax);
18#define IMAGE_MODE CAMERA_GRAYSCALE
19#elif defined(ARDUCAM_CAMERA_OV767X)
20#include "OV7670/ov767x.h"
21// OV7670 ov767x;
22OV7675 ov767x;
23Camera cam(ov767x);
24#define IMAGE_MODE CAMERA_RGB565
25#elif defined(ARDUCAM_CAMERA_GC2145)
26#include "GC2145/gc2145.h"
27GC2145 galaxyCore;
28Camera cam(galaxyCore);
29#define IMAGE_MODE CAMERA_RGB565
30#endif
31
32// The buffer used to capture the frame
33FrameBuffer fb;
34// The buffer used to rotate and resize the frame
35FrameBuffer outfb;
36// The buffer used to rotate and resize the frame
37Arduino_H7_Video Display(800, 480, GigaDisplayShield);
38
39void blinkLED(uint32_t count = 0xFFFFFFFF)
40{
41  pinMode(LED_BUILTIN, OUTPUT);
42  while (count--) {
43    digitalWrite(LED_BUILTIN, LOW);  // turn the LED on (HIGH is the voltage level)
44    delay(50);                       // wait for a second
45    digitalWrite(LED_BUILTIN, HIGH); // turn the LED off by making the voltage LOW
46    delay(50);                       // wait for a second
47  }
48}
49
50uint32_t palette[256];
51
52void setup() {
53  // Init the cam QVGA, 30FPS
54  if (!cam.begin(CAMERA_R320x240, IMAGE_MODE, 30)) {
55    blinkLED();
56  }
57
58  // Setup the palette to convert 8 bit greyscale to 32bit greyscale
59  for (int i = 0; i < 256; i++) {
60    palette[i] = 0xFF000000 | (i << 16) | (i << 8) | i;
61  }
62
63  Display.begin();
64
65  if (IMAGE_MODE == CAMERA_GRAYSCALE) {
66    dsi_configueCLUT((uint32_t*)palette);
67  }
68  outfb.setBuffer((uint8_t*)SDRAM.malloc(1024 * 1024));
69
70  // clear the display (gives a nice black background)
71  dsi_lcdClear(0);
72  dsi_drawCurrentFrameBuffer();
73  dsi_lcdClear(0);
74  dsi_drawCurrentFrameBuffer();
75}
76
77#define HTONS(x)    (((x >> 8) & 0x00FF) | ((x << 8) & 0xFF00))
78
79void loop() {
80
81  // Grab frame and write to another framebuffer
82  if (cam.grabFrame(fb, 3000) == 0) {
83
84    // double the resolution and transpose (rotate by 90 degrees) in the same step
85    // this only works if the camera feed is 320x240 and the area where we want to display is 640x480
86    for (int i = 0; i < 320; i++) {
87      for (int j = 0; j < 240; j++) {
88        if (IMAGE_MODE == CAMERA_GRAYSCALE) {
89          ((uint8_t*)outfb.getBuffer())[j * 2 + (i * 2) * 480] = ((uint8_t*)fb.getBuffer())[i + j * 320];
90          ((uint8_t*)outfb.getBuffer())[j * 2 + (i * 2) * 480 + 1] = ((uint8_t*)fb.getBuffer())[i + j * 320];
91          ((uint8_t*)outfb.getBuffer())[j * 2 + (i * 2 + 1) * 480] = ((uint8_t*)fb.getBuffer())[i + j * 320];
92          ((uint8_t*)outfb.getBuffer())[j * 2 + (i * 2 + 1) * 480 + 1] = ((uint8_t*)fb.getBuffer())[i + j * 320];
93        } else {
94          ((uint16_t*)outfb.getBuffer())[j * 2 + (i * 2) * 480] = HTONS(((uint16_t*)fb.getBuffer())[i + j * 320]);
95          ((uint16_t*)outfb.getBuffer())[j * 2 + (i * 2) * 480 + 1] = HTONS(((uint16_t*)fb.getBuffer())[i + j * 320]);
96          ((uint16_t*)outfb.getBuffer())[j * 2 + (i * 2 + 1) * 480] = HTONS(((uint16_t*)fb.getBuffer())[i + j * 320]);
97          ((uint16_t*)outfb.getBuffer())[j * 2 + (i * 2 + 1) * 480 + 1] = HTONS(((uint16_t*)fb.getBuffer())[i + j * 320]);
98        }
99      }
100    }
101    dsi_lcdDrawImage((void*)outfb.getBuffer(), (void*)dsi_getCurrentFrameBuffer(), 480, 640, IMAGE_MODE == CAMERA_GRAYSCALE ? DMA2D_INPUT_L8 : DMA2D_INPUT_RGB565);
102    dsi_drawCurrentFrameBuffer();
103  } else {
104    blinkLED(20);
105  }
106}