fix(vs373): missing function (readResultStatus)

Author: milesight-sway

VS_Series/VS373/VS373_Decoder.js

@@ -26,7 +26,7 @@ function Decoder(bytes, port) {
 function milesightDeviceDecode(bytes) {
     var decoded = {};
 
-    for (var i = 0; i < bytes.length;) {
+    for (var i = 0; i < bytes.length; ) {
         var channel_id = bytes[i++];
         var channel_type = bytes[i++];
 
@@ -302,10 +302,12 @@ function handle_downlink_response_ext(code, channel_type, bytes, offset) {
         offset += 1;
 
         if (result_value !== 0) {
+            var request = decoded;
             decoded = {};
             decoded.device_response_result = {};
             decoded.device_response_result.channel_type = channel_type;
-            decoded.device_response_result.result = readResultStatus(bytes[offset]);
+            decoded.device_response_result.result = readResultStatus(result_value);
+            decoded.device_response_result.request = request;
         }
     }
 
@@ -316,6 +318,11 @@ function hasResultFlag(code) {
     return code === 0xf8;
 }
 
+function readResultStatus(status) {
+    var status_map = { 0: "success", 1: "forbidden", 2: "invalid parameter" };
+    return getValue(status_map, status);
+}
+
 function readProtocolVersion(bytes) {
     var major = (bytes & 0xf0) >> 4;
     var minor = bytes & 0x0f;