Bug fixes - Build fails on ESP32, ESP32S3 without BSP leads to image capture failure

Author: ShardulNalegave

examples/person_detection/main/idf_component.yml

@@ -2,6 +2,7 @@ dependencies:
   espressif/esp-tflite-micro:
     version: "*"
     override_path: "../../../"
+  espressif/esp32-camera: ~2.0.5
   espressif/esp32_s2_kaluga_kit:
     rules:
       - if: "$TFLITE_USE_BSP_KALUGA == 1"

examples/person_detection/main/image_provider.cc

@@ -17,9 +17,12 @@ limitations under the License.
 #include "freertos/FreeRTOS.h"
 #include "freertos/task.h"
 
+#if (CONFIG_TFLITE_USE_BSP)
+#include "bsp/esp-bsp.h"
+#endif
+
 #include "esp_heap_caps.h"
 #include "esp_log.h"
-#include "bsp/esp-bsp.h"
 
 #include "app_camera_esp.h"
 #include "esp_camera.h"
@@ -125,6 +128,8 @@ TfLiteStatus GetImage(int image_width, int image_height, int channels, int8_t* i
   for (int i = 0; i < image_width * image_height; i++) {
     image_data[i] = ((uint8_t *) fb->buf)[i] ^ 0x80;
   }
+
+  esp_camera_fb_return(fb);
 #endif // DISPLAY_SUPPORT
   /* here the esp camera can give you grayscale image directly */
   return kTfLiteOk;

examples/person_detection/main/main_functions.cc

@@ -112,8 +112,10 @@ void setup() {
     return;
   }
 
+#if DISPLAY_SUPPORT
   create_gui();
-#endif
+#endif // DISPLAY_SUPPORT
+#endif // CLI_ONLY_INFERENCE
 }
 
 #ifndef CLI_ONLY_INFERENCE
@@ -143,7 +145,7 @@ void loop() {
   RespondToDetection(person_score_f, no_person_score_f);
   vTaskDelay(1); // to avoid watchdog trigger
 }
-#endif
+#endif // CLI_ONLY_INFERENCE
 
 #if defined(COLLECT_CPU_STATS)
   long long total_time = 0;