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#include "esp_camera.h"
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#include "Arduino.h"
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#include "FS.h"
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#include "SD_MMC.h"
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#include "soc/soc.h"
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#include "soc/rtc_cntl_reg.h"
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#include <Preferences.h>   // 推荐替代EEPROM，更稳定
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Preferences prefs;
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#define PWDN_GPIO_NUM     32
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#define RESET_GPIO_NUM    -1
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#define XCLK_GPIO_NUM      0
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#define SIOD_GPIO_NUM     26
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#define SIOC_GPIO_NUM     27
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#define Y9_GPIO_NUM       35
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#define Y8_GPIO_NUM       34
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#define Y7_GPIO_NUM       39
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#define Y6_GPIO_NUM       36
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#define Y5_GPIO_NUM       21
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#define Y4_GPIO_NUM       19
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#define Y3_GPIO_NUM       18
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#define Y2_GPIO_NUM        5
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#define VSYNC_GPIO_NUM    25
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#define HREF_GPIO_NUM     23
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#define PCLK_GPIO_NUM     22
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void setup() {
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  WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG, 0);  // 关闭Brownout检测
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  Serial.begin(115200);
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  // 摄像头配置
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  camera_config_t config;
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  config.ledc_channel = LEDC_CHANNEL_0;
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  config.ledc_timer = LEDC_TIMER_0;
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  config.pin_d0 = Y2_GPIO_NUM;
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  // ...（其余引脚定义同上，省略以节省篇幅）
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  config.xclk_freq_hz = 20000000;
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  config.pixel_format = PIXFORMAT_JPEG;
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  if (psramFound()) {
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    config.frame_size = FRAMESIZE_UXGA;   // 1600x1200
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    config.jpeg_quality = 10;
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    config.fb_count = 2;
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  } else {
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    config.frame_size = FRAMESIZE_SVGA;
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    config.jpeg_quality = 12;
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    config.fb_count = 1;
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  }
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  esp_err_t err = esp_camera_init(&config);
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  if (err != ESP_OK) {
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    Serial.printf("Camera init failed 0x%x\n", err);
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    return;
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  }
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  // SD卡初始化（1-bit模式节省功耗和引脚）
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  if (!SD_MMC.begin("/sdcard", true)) {
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    Serial.println("SD Card Mount Failed");
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    return;
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  }
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  takePicture();  // 首次拍照
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  goToDeepSleep(); // 进入低功耗睡眠
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}
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void takePicture() {
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  camera_fb_t * fb = esp_camera_fb_get();
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  if (!fb) {
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    Serial.println("Camera capture failed");
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    return;
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  }
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  prefs.begin("photo", false);
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  int pictureNumber = prefs.getInt("picNum", 0) + 1;
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  prefs.putInt("picNum", pictureNumber);
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  prefs.end();
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  String path = "/pic_" + String(pictureNumber) + ".jpg";
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  File file = SD_MMC.open(path.c_str(), FILE_WRITE);
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  if (file) {
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    file.write(fb->buf, fb->len);
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    Serial.printf("Picture saved: %s (%d bytes)\n", path.c_str(), fb->len);
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    file.close();
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  }
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  esp_camera_fb_return(fb);
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}
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void goToDeepSleep() {
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  Serial.println("Going to deep sleep for 10 seconds...");
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  esp_sleep_enable_timer_wakeup(10 * 1000000ULL);  // 10秒唤醒
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  esp_deep_sleep_start();
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}
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void loop() {}  // Deep Sleep模式下loop不会执行