Added deep sleep at the end with a 1 minute timer

Client/main/main.cpp

@@ -1,6 +1,8 @@
 #include <cassert>
 #include <cstdio>
 
+#include "sdkconfig.h"
+
 #include "esp_event.h"
 #include "esp_log.h"
 #include "esp_system.h"
@@ -8,8 +10,7 @@
 #include "freertos/task.h"
 #include "nvs.h"
 #include "nvs_flash.h"
-#include "sdkconfig.h"
-
+#include "esp_sleep.h"
 #include "epd.hpp"
 #include "led.hpp"
 #include "network.hpp"
@@ -88,4 +89,11 @@ extern "C" void app_main()
     disconnect_wifi();
     shutdown_network();
   }
+
+  ESP_LOGI(TAG, "Waiting 5 seconds before deep sleep...");
+  vTaskDelay(pdMS_TO_TICKS(5000));
+
+  ESP_LOGI(TAG, "Entering Deep Sleep for 60 seconds...");
+  esp_sleep_enable_timer_wakeup(60ULL * 1000000ULL);
+  esp_deep_sleep_start();
 }