/* HocLapTrinhRobot G3 03 - Ket noi camera va xem anh dau tien Board: ESP32-CAM AI Thinker Hardware: OV2640 camera, WiFi 2.4GHz */ #include #include #include "esp_camera.h" const char *WIFI_SSID = "TenMangWiFi"; const char *WIFI_PASSWORD = "MatKhauWiFi"; #define PWDN_GPIO_NUM 32 #define RESET_GPIO_NUM -1 #define XCLK_GPIO_NUM 0 #define SIOD_GPIO_NUM 26 #define SIOC_GPIO_NUM 27 #define Y9_GPIO_NUM 35 #define Y8_GPIO_NUM 34 #define Y7_GPIO_NUM 39 #define Y6_GPIO_NUM 36 #define Y5_GPIO_NUM 21 #define Y4_GPIO_NUM 19 #define Y3_GPIO_NUM 18 #define Y2_GPIO_NUM 5 #define VSYNC_GPIO_NUM 25 #define HREF_GPIO_NUM 23 #define PCLK_GPIO_NUM 22 WebServer server(80); uint32_t frameCount = 0; bool initCamera() { camera_config_t config; config.ledc_channel = LEDC_CHANNEL_0; config.ledc_timer = LEDC_TIMER_0; config.pin_d0 = Y2_GPIO_NUM; config.pin_d1 = Y3_GPIO_NUM; config.pin_d2 = Y4_GPIO_NUM; config.pin_d3 = Y5_GPIO_NUM; config.pin_d4 = Y6_GPIO_NUM; config.pin_d5 = Y7_GPIO_NUM; config.pin_d6 = Y8_GPIO_NUM; config.pin_d7 = Y9_GPIO_NUM; config.pin_xclk = XCLK_GPIO_NUM; config.pin_pclk = PCLK_GPIO_NUM; config.pin_vsync = VSYNC_GPIO_NUM; config.pin_href = HREF_GPIO_NUM; config.pin_sccb_sda = SIOD_GPIO_NUM; config.pin_sccb_scl = SIOC_GPIO_NUM; config.pin_pwdn = PWDN_GPIO_NUM; config.pin_reset = RESET_GPIO_NUM; config.xclk_freq_hz = 20000000; config.pixel_format = PIXFORMAT_JPEG; config.frame_size = FRAMESIZE_QVGA; config.jpeg_quality = 12; config.fb_count = 1; config.grab_mode = CAMERA_GRAB_LATEST; esp_err_t err = esp_camera_init(&config); Serial.print("camera init="); Serial.println(err == ESP_OK ? "OK" : "FAILED"); return err == ESP_OK; } void connectWifi() { WiFi.mode(WIFI_STA); WiFi.begin(WIFI_SSID, WIFI_PASSWORD); Serial.print("wifi connecting"); unsigned long started = millis(); while (WiFi.status() != WL_CONNECTED && millis() - started < 15000) { Serial.print("."); delay(250); } Serial.println(); if (WiFi.status() == WL_CONNECTED) { Serial.print("camera url=http://"); Serial.print(WiFi.localIP()); Serial.println("/jpg"); } else { Serial.println("wifi=FAILED"); } } void handleRoot() { String html = ""; html += "G3 Camera

G3 Camera First Frame

"; html += "

Refresh the image to capture a new frame.

"; html += "

Open JPEG only

"; server.send(200, "text/html", html); } void handleJpg() { camera_fb_t *frame = esp_camera_fb_get(); if (!frame) { server.send(500, "text/plain", "camera capture failed"); Serial.println("frame=FAILED"); return; } frameCount++; Serial.print("frame="); Serial.print(frameCount); Serial.print(" bytes="); Serial.println(frame->len); server.sendHeader("Cache-Control", "no-store"); server.send_P(200, "image/jpeg", (const char *)frame->buf, frame->len); esp_camera_fb_return(frame); } void setupRoutes() { server.on("/", handleRoot); server.on("/jpg", HTTP_GET, handleJpg); server.begin(); Serial.println("web server=STARTED"); } void setup() { Serial.begin(115200); delay(500); WiFi.persistent(false); WiFi.setSleep(false); bool cameraOk = initCamera(); connectWifi(); setupRoutes(); Serial.println(cameraOk ? "G3 03 camera ready" : "G3 03 camera needs hardware check"); } void loop() { server.handleClient(); }

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