no message

api/application/helpers/function_helper.php

@@ -116,7 +116,7 @@ function lampMqttCmd($sendTopic,$backTopic,$sendData,$timeout = 5,$seq = ''){
     $t = time();
     while($true == 1){
         $true = $mqtt->proc();
-        if ($true != 1){
+        if (!empty($seq) && $true != 1){
             $res = unpack('H*', $true['msg']);
             set_log('set_load','------------');
             set_log('set_load',substr($res[1], 0,2));