#include #include #include "esp_camera.h" #include // ===== Wi-Fi settings ===== const char* WIFI_SSID = "xxxxxx"; const char* WIFI_PASS = "xxxxxx"; // ===== XIAO ESP32S3 Sense (OV2640) pin definitions ===== #define PWDN_GPIO_NUM -1 #define RESET_GPIO_NUM -1 #define XCLK_GPIO_NUM 10 #define SIOD_GPIO_NUM 40 #define SIOC_GPIO_NUM 39 #define Y9_GPIO_NUM 48 #define Y8_GPIO_NUM 11 #define Y7_GPIO_NUM 12 #define Y6_GPIO_NUM 14 #define Y5_GPIO_NUM 16 #define Y4_GPIO_NUM 18 #define Y3_GPIO_NUM 17 #define Y2_GPIO_NUM 15 #define VSYNC_GPIO_NUM 38 #define HREF_GPIO_NUM 47 #define PCLK_GPIO_NUM 13 WebServer server(80); void handleRoot() { String html = "" "XIAO Camera" "

XIAO ESP32S3 Sense Camera

" "

Show still image

" "

" ""; server.send(200, "text/html; charset=utf-8", html); } void handleJpg() { WiFiClient client = server.client(); camera_fb_t *fb = esp_camera_fb_get(); if (!fb) { Serial.println("Camera capture failed"); client.println("HTTP/1.1 500 Internal Server Error"); client.println("Content-Type: text/plain"); client.println("Connection: close"); client.println(); client.println("Camera capture failed"); return; } client.println("HTTP/1.1 200 OK"); client.println("Content-Type: image/jpeg"); client.println("Connection: close"); client.println(); client.write(fb->buf, fb->len); esp_camera_fb_return(fb); } 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_VGA; // 640x480 config.jpeg_quality = 12; config.fb_count = 2; config.grab_mode = CAMERA_GRAB_LATEST; esp_err_t err = esp_camera_init(&config); if (err != ESP_OK) { Serial.printf("esp_camera_init failed: 0x%x\n", err); return false; } sensor_t * s = esp_camera_sensor_get(); if (s) { s->set_vflip(s, 1); s->set_brightness(s, 1); s->set_saturation(s, 0); } return true; } void connectWiFi() { WiFi.mode(WIFI_STA); WiFi.begin(WIFI_SSID, WIFI_PASS); Serial.print("Connecting to Wi-Fi"); while (WiFi.status() != WL_CONNECTED) { delay(500); Serial.print("."); } Serial.println(); Serial.print("Wi-Fi connected. IP: "); Serial.println(WiFi.localIP()); } void setup() { Serial.begin(115200); delay(1000); if (!initCamera()) { while (true) { delay(1000); } } connectWiFi(); server.on("/", handleRoot); server.on("/jpg", HTTP_GET, handleJpg); server.begin(); Serial.println("Camera server started"); Serial.println("Open: http://" + WiFi.localIP().toString() + "/"); } void loop() { server.handleClient(); }