esp-camera报错cam_hal: FB-SIZE: 115200 != 129600怎么解决？

469 CIS

问答对人有帮助，内容完整，我也想知道答案 0 我在适配一个新的CIS，这颗输出的格式是raw，大小为480270，所以dma node size 为2880，图片fb_size为129600，程序将它计算为9次拷贝，一次的大小为14400，我在esp32-camera的基础上修改了很多内容，目前的问题是出在cam_hal中的cam_task，程序期待的是有9次IN_SUC_EOF中断，但是每次只收到8次，也就是在came_task中只拷贝了8次，所以得到的大小为115200（离正确的129600差14400），测量过sensor的波形，其pclk为6.4MHZ，一共有270个行同步信号，每个行同步信号内有480个pclk信号. 我使用的是esp32s3-eye，主程序如下： `extern "C" void app_main() { #if CONFIG_CAMERA_MODULE_ESP_EYE \|\| CONFIG_CAMERA_MODULE_ESP32_CAM_BOARD / IO13, IO14 is designed for JTAG by default, * to use it as generalized input, * firstly declair it as pullup input / gpio_config_t conf; conf.mode = GPIO_MODE_INPUT; conf.pull_up_en = GPIO_PULLUP_ENABLE; conf.pull_down_en = GPIO_PULLDOWN_DISABLE; conf.intr_type = GPIO_INTR_DISABLE; conf.pin_bit_mask = 1LL << 13; gpio_config(&conf); conf.pin_bit_mask = 1LL << 14; gpio_config(&conf); #endif camera_config_t config; config.ledc_channel = LEDC_CHANNEL_0; config.ledc_timer = LEDC_TIMER_0; config.pin_d0 = CAMERA_PIN_D0; config.pin_d1 = CAMERA_PIN_D1; config.pin_d2 = CAMERA_PIN_D2; config.pin_d3 = CAMERA_PIN_D3; config.pin_d4 = CAMERA_PIN_D4; config.pin_d5 = CAMERA_PIN_D5; config.pin_d6 = CAMERA_PIN_D6; config.pin_d7 = CAMERA_PIN_D7; config.pin_xclk = CAMERA_PIN_XCLK; config.pin_pclk = CAMERA_PIN_PCLK; config.pin_vsync = CAMERA_PIN_VSYNC; config.pin_href = CAMERA_PIN_HREF; config.pin_sscb_sda = CAMERA_PIN_SIOD; config.pin_sscb_scl = CAMERA_PIN_SIOC; config.pin_pwdn = CAMERA_PIN_PWDN; config.pin_reset = CAMERA_PIN_RESET; config.xclk_freq_hz = 24000000; config.pixel_format = PIXFORMAT_GRAYSCALE; config.frame_size = FRAMESIZE_480X270; config.jpeg_quality = 12; config.fb_count = 2; config.fb_location = CAMERA_FB_IN_PSRAM; config.grab_mode = CAMERA_GRAB_WHEN_EMPTY; // camera init esp_err_t err = esp_camera_init(&config); if (err != ESP_OK) { ESP_LOGE(TAG, "Camera init failed with error 0x%x", err); return; } vTaskDelay(2000 / portTICK_RATE_MS); while (1) { ESP_LOGW(TAG, "Taking picture..."); camera_fb_t pic = esp_camera_fb_get(); ESP_LOGW(TAG, "pic addr: %p ", pic->buf); // use pic->buf to access the image ESP_LOGW(TAG, "Picture taken! Its size was: %zu bytes", pic->len); esp_camera_fb_return(pic); // vTaskDelay(5000 / portTICK_RATE_MS); } }` 为了进一步调试，我修改了cam_hal中的buf_size检查，将尺寸不合规的frame的en也置为0，得到了如下输出： I (00:00:09.711) cam_hal: FB-SIZE: 115200 != 129600 W (00:00:09.712) example:take_picture: pic addr: 0x3d8009c8 W (00:00:09.712) example:take_picture: Picture taken! Its size was: 115200 bytes W (00:00:09.712) example:take_picture: Taking picture... I (00:00:09.741) cam_hal: FB-SIZE: 115200 != 129600 W (00:00:09.741) example:take_picture: pic addr: 0x3d82040c W (00:00:09.741) example:take_picture: Picture taken! Its size was: 115200 bytes W (00:00:09.742) example:take_picture: Taking picture... I (00:00:09.770) cam_hal: FB-SIZE: 115200 != 129600 W (00:00:09.770) example:take_picture: pic addr: 0x3d8009c8 W (00:00:09.771) example:take_picture: Picture taken! Its size was: 115200 bytes W (00:00:09.771) example:take_picture: Taking picture... I (00:00:09.799) cam_hal: FB-SIZE: 115200 != 129600 看起来像最后一个包的时候，程序还没来得及读到14400个字节，v信号就来了。实在想不出来问题出在哪。当程序运行到这一行时的cam_obj: ` frame_buffer_event->len += ll_cam_memcpy(cam_obj, &frame_buffer_event->buf[frame_buffer_event->len], &cam_obj->dma_buffer[(cnt % cam_obj->dma_half_buffer_cnt) * cam_obj->dma_half_buffer_size], cam_obj->dma_half_buffer_size);` 0
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