Use the hardware random number generator

components/lua/lua-5.3/luaconf.h

@@ -74,6 +74,11 @@
 # define LUA_FLOAT_TYPE LUA_FLOAT_FLOAT
 #endif
 
+#define L_RANDMAX 2147483647
+extern uint32_t esp_random(void);
+#define l_rand()	  (esp_random() & L_RANDMAX)
+#define l_srand(x)  
+
 /*
 ** Configuration for Paths.
 **

components/modules/ble.c

@@ -928,13 +928,10 @@ static int lble_init(lua_State *L) {
   }
 
   if (!seen1800) {
-    printf("about to call gap_init\n");
     ble_svc_gap_init();
   }
-  printf("about to call gatt_init\n");
   ble_svc_gatt_init();
 
-  printf("about to call gatts_start\n");
   ble_gatts_start();
 
   inited = RUNNING;

components/modules/file.c

@@ -543,7 +543,6 @@ static int file_putfile( lua_State* L )
   // Warning this code C calls other file_* routines to avoid duplication code.  These
   // use Lua stack addressing of arguments, so this does Lua stack maniplation to
   // align these
-  int ret_cnt = 0;
   lua_settop(L, 2);
   lua_pushvalue(L, 2); //dup contents onto the ToS [3]
   lua_pushliteral(L, "w+");