<MCU默认为空>

app/src/main/java/com/wdkl/callingmainnurse/common/Constants.java

@@ -318,7 +318,7 @@ public class Constants {
     /**
      * 单片机版本号  add by waderson 20190708
      */
-    public static String MCU_VERSION_NUMBER = "NULL";
+    public static String MCU_VERSION_NUMBER = "";
     /**
      * 是否是免提状态  add by waderson 20190802
      */