adding nvs_flash_init in sketch

Author: andreagilardoni

main/sketch.ino.cpp

@@ -31,6 +31,7 @@ extern "C" {
   #include <sys/types.h>
   #include <dirent.h>
   #include "esp_partition.h"
+  #include "nvs_flash.h"
 }
 
 #include <Arduino.h>
@@ -92,6 +93,7 @@ void setupBluetooth();
 
 void setup() {
   setDebug(debug);
+  nvs_flash_init();
 
   // put SWD and SWCLK pins connected to SAMD as inputs
   pinMode(15, INPUT);