diff --git a/main/main.c b/main/main.c
--- a/main/main.c
+++ b/main/main.c
@@ -9,7 +9,7 @@
 #include "esp_system.h"
 #include "esp_event.h"
 #include "esp_log.h"
-#include "nvs_flash.h"
+#include "flash.h"
 #include "sdkconfig.h"
 #include "osc_control.h"
 #include "wifi.h"
@@ -24,7 +24,6 @@
 // Private variables
 static const char *TAG = "main";
 
-
 // Application entry point
 void app_main(void)
 {
@@ -32,12 +31,18 @@ void app_main(void)
     // usb_cdc_init();
 
     // Initialize NVS
-    esp_err_t ret = nvs_flash_init();
-    if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
-        ESP_ERROR_CHECK(nvs_flash_erase());
-        ret = nvs_flash_init();
-    }
-    ESP_ERROR_CHECK(ret);
+    // esp_err_t ret = nvs_flash_init();
+    // if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
+    //     ESP_ERROR_CHECK(nvs_flash_erase());
+    //     ret = nvs_flash_init();
+    // }
+    // ESP_ERROR_CHECK(ret);
+
+    flash_init();
+    int32_t cnt = flash_read("count");
+    cnt += 1;
+    flash_write("count", cnt);
+
 
     // Initialize display
     display_init();
@@ -64,6 +69,8 @@ void app_main(void)
 
     while(1)
     {
+        // ESP_LOGI(TAG, "cnt=%ld\n", cnt);
+
         vTaskDelay(pdMS_TO_TICKS(100));
     }