added sleep test

cubesatsim/esp32-cam-send-jpeg-serial/esp32-cam-send-jpeg-serial.ino

@@ -175,8 +175,12 @@ void deleteFile(fs::FS &fs, const char * path) {
 
 void setup() {
 
-  delay(5000);  
-
+//  delay(5000);  
+        
+  #define uS_TO_S_FACTOR 1000000ULL  /* Conversion factor for micro seconds to seconds */
+  #define TIME_TO_SLEEP  10        /* Time ESP32 will go to sleep (in seconds) */
+  esp_sleep_enable_timer_wakeup(TIME_TO_SLEEP * uS_TO_S_FACTOR);  // testing sleep
+       
   Serial.begin(115200);
 
   initialize_camera();