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| 1 | +/* |
| 2 | + * This example shows how to capture images from the camera and send them over Web Serial. |
| 3 | + * |
| 4 | + * There is a companion web app that receives the images and displays them in a canvas. |
| 5 | + * It can be found in the "extras" folder of this library. |
| 6 | + * The on-board LED lights up while the image is being sent over serial. |
| 7 | + * |
| 8 | + * Instructions: |
| 9 | + * 1. Make sure the correct camera is selected in the #include section below by uncommenting the correct line.
| 10 | + * 2. Upload this sketch to your camera-equipped board. |
| 11 | + * 3. Open the web app in a browser (Chrome or Edge) by opening the index.html file in the "extras" folder. |
| 12 | + * |
| 13 | + * Initial author: Sebastian Romero @sebromero |
| 14 | + */ |
| 15 | + |
| 16 | +#include "camera.h" |
| 17 | + |
| 18 | +#ifdef ARDUINO_NICLA_VISION |
| 19 | + #include "gc2145.h" |
| 20 | + GC2145 galaxyCore; |
| 21 | + Camera cam(galaxyCore); |
| 22 | + #define IMAGE_MODE CAMERA_RGB565 |
| 23 | +#elif defined(ARDUINO_PORTENTA_H7_M7) |
| 24 | + // uncomment the correct camera in use |
| 25 | + #include "hm0360.h" |
| 26 | + HM0360 himax; |
| 27 | + // #include "himax.h"; |
| 28 | + // HM01B0 himax; |
| 29 | + Camera cam(himax); |
| 30 | + #define IMAGE_MODE CAMERA_GRAYSCALE |
| 31 | +#elif defined(ARDUINO_GIGA) |
| 32 | + #include "ov767x.h" |
| 33 | + // uncomment the correct camera in use |
| 34 | + OV7670 ov767x; |
| 35 | + // OV7675 ov767x; |
| 36 | + Camera cam(ov767x); |
| 37 | + #define IMAGE_MODE CAMERA_RGB565 |
| 38 | +#else |
| 39 | +#error "This board is unsupported." |
| 40 | +#endif |
| 41 | + |
| 42 | +/* |
| 43 | +Other buffer instantiation options: |
| 44 | + FrameBuffer fb(0x30000000); |
| 45 | + FrameBuffer fb(320,240,2); |
| 46 | +
|
| 47 | +If resolution higher than 320x240 is required, please use external RAM via |
| 48 | + #include "SDRAM.h" |
| 49 | + FrameBuffer fb(SDRAM_START_ADDRESS); |
| 50 | + ... |
| 51 | + // and adding in setup() |
| 52 | + SDRAM.begin(); |
| 53 | +*/ |
| 54 | +#define CHUNK_SIZE 512 // Size of chunks in bytes |
| 55 | +#define RESOLUTION CAMERA_R320x240 |
| 56 | +FrameBuffer fb; |
| 57 | + |
| 58 | +unsigned long lastUpdate = 0; |
| 59 | + |
| 60 | +void blinkLED(uint32_t count = 0xFFFFFFFF) { |
| 61 | + while (count--) { |
| 62 | + digitalWrite(LED_BUILTIN, LOW); // turn the LED on (HIGH is the voltage level) |
| 63 | + delay(50); // wait for a second |
| 64 | + digitalWrite(LED_BUILTIN, HIGH); // turn the LED off by making the voltage LOW |
| 65 | + delay(50); // wait for a second |
| 66 | + } |
| 67 | +} |
| 68 | + |
| 69 | +void setup() { |
| 70 | + pinMode(LED_BUILTIN, OUTPUT); |
| 71 | + |
| 72 | + // Init the cam QVGA, 30FPS |
| 73 | + if (!cam.begin(RESOLUTION, IMAGE_MODE, 30)) { |
| 74 | + blinkLED(); |
| 75 | + } |
| 76 | + |
| 77 | + blinkLED(5); |
| 78 | +} |
| 79 | + |
| 80 | +void sendFrame(){ |
| 81 | + // Grab frame and write to serial |
| 82 | + if (cam.grabFrame(fb, 3000) == 0) { |
| 83 | + byte* buffer = fb.getBuffer(); |
| 84 | + size_t bufferSize = cam.frameSize(); |
| 85 | + digitalWrite(LED_BUILTIN, LOW); |
| 86 | + |
| 87 | + // Split buffer into chunks |
| 88 | + for(size_t i = 0; i < bufferSize; i += CHUNK_SIZE) { |
| 89 | + size_t chunkSize = min(bufferSize - i, CHUNK_SIZE); |
| 90 | + Serial.write(buffer + i, chunkSize); |
| 91 | + Serial.flush(); |
| 92 | + delay(1); // Optional: Add a small delay to allow the receiver to process the chunk |
| 93 | + } |
| 94 | + |
| 95 | + digitalWrite(LED_BUILTIN, HIGH); |
| 96 | + } else { |
| 97 | + blinkLED(20); |
| 98 | + } |
| 99 | +} |
| 100 | + |
| 101 | +void sendCameraConfig(){ |
| 102 | + Serial.write(IMAGE_MODE); |
| 103 | + Serial.write(RESOLUTION); |
| 104 | + Serial.flush(); |
| 105 | + delay(1); |
| 106 | +} |
| 107 | + |
| 108 | +void loop() { |
| 109 | + if(!Serial) { |
| 110 | + Serial.begin(115200); |
| 111 | + while(!Serial); |
| 112 | + } |
| 113 | + |
| 114 | + if(!Serial.available()) return; |
| 115 | + |
| 116 | + byte request = Serial.read(); |
| 117 | + |
| 118 | + switch(request){ |
| 119 | + case 1: |
| 120 | + sendFrame(); |
| 121 | + break; |
| 122 | + case 2: |
| 123 | + sendCameraConfig(); |
| 124 | + break; |
| 125 | + } |
| 126 | + |
| 127 | +} |
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