.pin_href = CAM_PIN_HREF, .pin_pclk = CAM_PIN_PCLK, .xclk_freq_hz = 20000000, .ledc_timer = LEDC_TIMER_0, .ledc_channel = LEDC_CHANNEL_0, .pixel_format = PIXFORMAT_RGB565, .frame_size = FRAMESIZE_QVGA, // 降低分辨率 .jpeg_quality = 12, .fb_count = 1, .grab_mode = CAMER...