From 50ae401566a27d265000618d236225a0ec2f2008 Mon Sep 17 00:00:00 2001
From: Kristian Sloth Lauszus <lauszus@gmail.com>
Date: Sun, 6 Dec 2015 18:35:16 +0100
Subject: [PATCH] Print error message if a USB Hub is detected in the BTD class

This is useful as some Bluetooth dongles have a hub inside

Fixes #187
---
 BTD.cpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/BTD.cpp b/BTD.cpp
index 075f5ed1..b3b41a7f 100755
--- a/BTD.cpp
+++ b/BTD.cpp
@@ -101,6 +101,9 @@ uint8_t BTD::ConfigureDevice(uint8_t parent, uint8_t port, bool lowspeed) {
                 return USB_ERROR_OUT_OF_ADDRESS_SPACE_IN_POOL;
         }
 
+        if (udd->bDeviceClass == 0x09) // Some dongles have an USB hub inside
+                goto FailHub;
+
         epInfo[0].maxPktSize = udd->bMaxPacketSize0; // Extract Max Packet Size from device descriptor
         epInfo[1].epAddr = udd->bNumConfigurations; // Steal and abuse from epInfo structure to save memory
 
@@ -109,6 +112,15 @@ uint8_t BTD::ConfigureDevice(uint8_t parent, uint8_t port, bool lowspeed) {
 
         return USB_ERROR_CONFIG_REQUIRES_ADDITIONAL_RESET;
 
+FailHub:
+#ifdef DEBUG_USB_HOST
+        Notify(PSTR("\r\nPlease create a hub instance in your code: \"USBHub Hub1(&Usb);\""), 0x80);
+#endif
+        pUsb->setAddr(bAddress, 0, 0); // Reset address
+        rcode = USB_DEV_CONFIG_ERROR_DEVICE_NOT_SUPPORTED;
+        Release();
+        return rcode;
+
 FailGetDevDescr:
 #ifdef DEBUG_USB_HOST
         NotifyFailGetDevDescr(rcode);