Uncaught (in promise) DOMException: A transfer error has occurred. wi…

…ndows workaround
gabonator · Mar 13, 2021 · 5c168b5 · 5c168b5
1 parent 6104442
commit 5c168b5
Showing 1 changed file with 7 additions and 3 deletions.
diff --git a/system/apps_featured/69_webusbosc/web/v3/serial.js b/system/apps_featured/69_webusbosc/web/v3/serial.js
@@ -64,14 +64,18 @@ var serial = {};
         })
         .then(() => this.device_.claimInterface(this.interfaceNumber_))
         .then(() => this.device_.selectAlternateInterface(this.interfaceNumber_, 0))
+        .then(() => {
+          // Windows workaround "Uncaught (in promise) DOMException: A transfer error has occurred."
+          if (window.navigator.userAgent.indexOf("Windows") != -1)
+            return Promise.resolve();
 
-        .then(() => this.device_.controlTransferOut({
+          return this.device_.controlTransferOut({
             'requestType': 'class',
             'recipient': 'interface',
             'request': 0x22,
             'value': 0x01,
-            'index': this.interfaceNumber_}))
-
+            'index': this.interfaceNumber_})
+        })
         .then(() => {
           readLoop();
         });