added listDir

cubesatsim/esp32-cam/esp32-cam.ino

@@ -13,8 +13,50 @@ static esp_err_t init_camera();
 #define FORMAT_SPIFFS_IF_FAILED true
 
 camera_fb_t *pic;
-//File inFile;
-//File outFile;
+
+
+// example code from https://github.com/espressif/arduino-esp32/blob/master/libraries/LittleFS/examples/LITTLEFS_test/LITTLEFS_test.ino
+//
+void listDir(fs::FS &fs, const char * dirname, uint8_t levels) {
+  Serial.printf("Listing directory: %s\r\n", dirname);
+
+  File root = fs.open(dirname);
+  if (!root) {
+    Serial.println("- failed to open directory");
+    return;
+  }
+  if (!root.isDirectory()) {
+    Serial.println(" - not a directory");
+    return;
+  }
+
+  File file = root.openNextFile();
+  while (file) {
+    if (file.isDirectory()) {
+      Serial.print("  DIR : ");
+      Serial.println(file.name());
+      if (levels) {
+        listDir(fs, file.name(), levels - 1);
+      }
+    } else {
+      Serial.print("  FILE: ");
+      Serial.print(file.name());
+      Serial.print("\tSIZE: ");
+      Serial.println(file.size());
+    }
+    file = root.openNextFile();
+  }
+}
+
+void deleteFile(fs::FS &fs, const char * path) {
+  Serial.printf("Deleting file: %s\r\n", path);
+  if (fs.remove(path)) {
+    Serial.println("- file deleted");
+  } else {
+    Serial.println("- delete failed");
+  }
+}
+
 
 void setup() {
   // put your setup code here, to run once:
@@ -35,8 +77,8 @@ void setup() {
     Serial.println("SPIFFS Mount Failed");
     return;
   }
-
  }
+ listDir(SPIFFS, "/", 0); 
 }
 
 void loop() {
@@ -69,6 +111,8 @@ void loop() {
   char filename[] = "/cam.bin";
 
   save_camera_image(filename);
+  
+  listDir(SPIFFS, "/", 0);
 
   picosstvpp();