#include "esp_camera.h"

// 适用于 AI Thinker ESP32-CAM 的引脚配置
#define PWDN_GPIO_NUM    -1
#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

void setup() {
  Serial.begin(115200);
  delay(2000);  // 等待串口稳定
  Serial.println();
  Serial.println("==== ESP32-CAM 摄像头初始化测试开始 ====");

  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_sscb_sda = SIOD_GPIO_NUM;
  config.pin_sscb_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;

  // 设置最兼容参数，适用于测试是否能正常初始化
  config.frame_size = FRAMESIZE_QQVGA; // 160x120 最低分辨率
  config.jpeg_quality = 12;            // 最低画质（最高压缩）
  config.fb_count = 1;

  Serial.println("初始化摄像头...");
  esp_err_t err = esp_camera_init(&config);
  if (err != ESP_OK) {
    Serial.printf("❌ 摄像头初始化失败，错误代码: 0x%x\n", err);
    while (true) delay(1000);  // 卡死提示错误
  }

  Serial.println("✅ 摄像头初始化成功！");

  // 拍照测试
  Serial.println("拍照测试中...");
  camera_fb_t* fb = esp_camera_fb_get();
  if (!fb) {
    Serial.println("❌ 拍照失败，未获取图像帧");
  } else {
    Serial.printf("📷 拍照成功，图像大小：%d 字节\n", fb->len);
    esp_camera_fb_return(fb);
  }

  Serial.println("==== 摄像头测试完成 ====");
}

void loop() {
  // 空循环，不执行其他任务
}