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diff --git a/lib/usbhost/USB_Host_Shield_2.0/usbhub.h b/lib/usbhost/USB_Host_Shield_2.0/usbhub.h
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+++ b/lib/usbhost/USB_Host_Shield_2.0/usbhub.h
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+/* Copyright (C) 2011 Circuits At Home, LTD. All rights reserved.
+
+This software may be distributed and modified under the terms of the GNU
+General Public License version 2 (GPL2) as published by the Free Software
+Foundation and appearing in the file GPL2.TXT included in the packaging of
+this file. Please note that GPL2 Section 2[b] requires that all works based
+on this software must also be made publicly available under the terms of
+the GPL2 ("Copyleft").
+
+Contact information
+-------------------
+
+Circuits At Home, LTD
+Web : http://www.circuitsathome.com
+e-mail : support@circuitsathome.com
+ */
+#if !defined(__USBHUB_H__)
+#define __USBHUB_H__
+
+#include "Usb.h"
+
+#define USB_DESCRIPTOR_HUB 0x09 // Hub descriptor type
+
+// Hub Requests
+#define bmREQ_CLEAR_HUB_FEATURE USB_SETUP_HOST_TO_DEVICE|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_DEVICE
+#define bmREQ_CLEAR_PORT_FEATURE USB_SETUP_HOST_TO_DEVICE|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_OTHER
+#define bmREQ_CLEAR_TT_BUFFER USB_SETUP_HOST_TO_DEVICE|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_OTHER
+#define bmREQ_GET_HUB_DESCRIPTOR USB_SETUP_DEVICE_TO_HOST|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_DEVICE
+#define bmREQ_GET_HUB_STATUS USB_SETUP_DEVICE_TO_HOST|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_DEVICE
+#define bmREQ_GET_PORT_STATUS USB_SETUP_DEVICE_TO_HOST|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_OTHER
+#define bmREQ_RESET_TT USB_SETUP_HOST_TO_DEVICE|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_OTHER
+#define bmREQ_SET_HUB_DESCRIPTOR USB_SETUP_HOST_TO_DEVICE|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_DEVICE
+#define bmREQ_SET_HUB_FEATURE USB_SETUP_HOST_TO_DEVICE|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_DEVICE
+#define bmREQ_SET_PORT_FEATURE USB_SETUP_HOST_TO_DEVICE|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_OTHER
+#define bmREQ_GET_TT_STATE USB_SETUP_DEVICE_TO_HOST|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_OTHER
+#define bmREQ_STOP_TT USB_SETUP_HOST_TO_DEVICE|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_OTHER
+
+// Hub Class Requests
+#define HUB_REQUEST_CLEAR_TT_BUFFER 8
+#define HUB_REQUEST_RESET_TT 9
+#define HUB_REQUEST_GET_TT_STATE 10
+#define HUB_REQUEST_STOP_TT 11
+
+// Hub Features
+#define HUB_FEATURE_C_HUB_LOCAL_POWER 0
+#define HUB_FEATURE_C_HUB_OVER_CURRENT 1
+#define HUB_FEATURE_PORT_CONNECTION 0
+#define HUB_FEATURE_PORT_ENABLE 1
+#define HUB_FEATURE_PORT_SUSPEND 2
+#define HUB_FEATURE_PORT_OVER_CURRENT 3
+#define HUB_FEATURE_PORT_RESET 4
+#define HUB_FEATURE_PORT_POWER 8
+#define HUB_FEATURE_PORT_LOW_SPEED 9
+#define HUB_FEATURE_C_PORT_CONNECTION 16
+#define HUB_FEATURE_C_PORT_ENABLE 17
+#define HUB_FEATURE_C_PORT_SUSPEND 18
+#define HUB_FEATURE_C_PORT_OVER_CURRENT 19
+#define HUB_FEATURE_C_PORT_RESET 20
+#define HUB_FEATURE_PORT_TEST 21
+#define HUB_FEATURE_PORT_INDICATOR 22
+
+// Hub Port Test Modes
+#define HUB_PORT_TEST_MODE_J 1
+#define HUB_PORT_TEST_MODE_K 2
+#define HUB_PORT_TEST_MODE_SE0_NAK 3
+#define HUB_PORT_TEST_MODE_PACKET 4
+#define HUB_PORT_TEST_MODE_FORCE_ENABLE 5
+
+// Hub Port Indicator Color
+#define HUB_PORT_INDICATOR_AUTO 0
+#define HUB_PORT_INDICATOR_AMBER 1
+#define HUB_PORT_INDICATOR_GREEN 2
+#define HUB_PORT_INDICATOR_OFF 3
+
+// Hub Port Status Bitmasks
+#define bmHUB_PORT_STATUS_PORT_CONNECTION 0x0001
+#define bmHUB_PORT_STATUS_PORT_ENABLE 0x0002
+#define bmHUB_PORT_STATUS_PORT_SUSPEND 0x0004
+#define bmHUB_PORT_STATUS_PORT_OVER_CURRENT 0x0008
+#define bmHUB_PORT_STATUS_PORT_RESET 0x0010
+#define bmHUB_PORT_STATUS_PORT_POWER 0x0100
+#define bmHUB_PORT_STATUS_PORT_LOW_SPEED 0x0200
+#define bmHUB_PORT_STATUS_PORT_HIGH_SPEED 0x0400
+#define bmHUB_PORT_STATUS_PORT_TEST 0x0800
+#define bmHUB_PORT_STATUS_PORT_INDICATOR 0x1000
+
+// Hub Port Status Change Bitmasks (used one byte instead of two)
+#define bmHUB_PORT_STATUS_C_PORT_CONNECTION 0x0001
+#define bmHUB_PORT_STATUS_C_PORT_ENABLE 0x0002
+#define bmHUB_PORT_STATUS_C_PORT_SUSPEND 0x0004
+#define bmHUB_PORT_STATUS_C_PORT_OVER_CURRENT 0x0008
+#define bmHUB_PORT_STATUS_C_PORT_RESET 0x0010
+
+// Hub Status Bitmasks (used one byte instead of two)
+#define bmHUB_STATUS_LOCAL_POWER_SOURCE 0x01
+#define bmHUB_STATUS_OVER_CURRENT 0x12
+
+// Hub Status Change Bitmasks (used one byte instead of two)
+#define bmHUB_STATUS_C_LOCAL_POWER_SOURCE 0x01
+#define bmHUB_STATUS_C_OVER_CURRENT 0x12
+
+
+// Hub Port Configuring Substates
+#define USB_STATE_HUB_PORT_CONFIGURING 0xb0
+#define USB_STATE_HUB_PORT_POWERED_OFF 0xb1
+#define USB_STATE_HUB_PORT_WAIT_FOR_POWER_GOOD 0xb2
+#define USB_STATE_HUB_PORT_DISCONNECTED 0xb3
+#define USB_STATE_HUB_PORT_DISABLED 0xb4
+#define USB_STATE_HUB_PORT_RESETTING 0xb5
+#define USB_STATE_HUB_PORT_ENABLED 0xb6
+
+// Additional Error Codes
+#define HUB_ERROR_PORT_HAS_BEEN_RESET 0xb1
+
+// The bit mask to check for all necessary state bits
+#define bmHUB_PORT_STATUS_ALL_MAIN ((0UL | bmHUB_PORT_STATUS_C_PORT_CONNECTION | bmHUB_PORT_STATUS_C_PORT_ENABLE | bmHUB_PORT_STATUS_C_PORT_SUSPEND | bmHUB_PORT_STATUS_C_PORT_RESET) << 16) | bmHUB_PORT_STATUS_PORT_POWER | bmHUB_PORT_STATUS_PORT_ENABLE | bmHUB_PORT_STATUS_PORT_CONNECTION | bmHUB_PORT_STATUS_PORT_SUSPEND)
+
+// Bit mask to check for DISABLED state in HubEvent::bmStatus field
+#define bmHUB_PORT_STATE_CHECK_DISABLED (0x0000 | bmHUB_PORT_STATUS_PORT_POWER | bmHUB_PORT_STATUS_PORT_ENABLE | bmHUB_PORT_STATUS_PORT_CONNECTION | bmHUB_PORT_STATUS_PORT_SUSPEND)
+
+// Hub Port States
+#define bmHUB_PORT_STATE_DISABLED (0x0000 | bmHUB_PORT_STATUS_PORT_POWER | bmHUB_PORT_STATUS_PORT_CONNECTION)
+
+// Hub Port Events
+#define bmHUB_PORT_EVENT_CONNECT (((0UL | bmHUB_PORT_STATUS_C_PORT_CONNECTION) << 16) | bmHUB_PORT_STATUS_PORT_POWER | bmHUB_PORT_STATUS_PORT_CONNECTION)
+#define bmHUB_PORT_EVENT_DISCONNECT (((0UL | bmHUB_PORT_STATUS_C_PORT_CONNECTION) << 16) | bmHUB_PORT_STATUS_PORT_POWER)
+#define bmHUB_PORT_EVENT_RESET_COMPLETE (((0UL | bmHUB_PORT_STATUS_C_PORT_RESET) << 16) | bmHUB_PORT_STATUS_PORT_POWER | bmHUB_PORT_STATUS_PORT_ENABLE | bmHUB_PORT_STATUS_PORT_CONNECTION)
+
+#define bmHUB_PORT_EVENT_LS_CONNECT (((0UL | bmHUB_PORT_STATUS_C_PORT_CONNECTION) << 16) | bmHUB_PORT_STATUS_PORT_POWER | bmHUB_PORT_STATUS_PORT_CONNECTION | bmHUB_PORT_STATUS_PORT_LOW_SPEED)
+#define bmHUB_PORT_EVENT_LS_RESET_COMPLETE (((0UL | bmHUB_PORT_STATUS_C_PORT_RESET) << 16) | bmHUB_PORT_STATUS_PORT_POWER | bmHUB_PORT_STATUS_PORT_ENABLE | bmHUB_PORT_STATUS_PORT_CONNECTION | bmHUB_PORT_STATUS_PORT_LOW_SPEED)
+#define bmHUB_PORT_EVENT_LS_PORT_ENABLED (((0UL | bmHUB_PORT_STATUS_C_PORT_CONNECTION | bmHUB_PORT_STATUS_C_PORT_ENABLE) << 16) | bmHUB_PORT_STATUS_PORT_POWER | bmHUB_PORT_STATUS_PORT_ENABLE | bmHUB_PORT_STATUS_PORT_CONNECTION | bmHUB_PORT_STATUS_PORT_LOW_SPEED)
+
+struct HubDescriptor {
+ uint8_t bDescLength; // descriptor length
+ uint8_t bDescriptorType; // descriptor type
+ uint8_t bNbrPorts; // number of ports a hub equiped with
+
+ struct {
+ uint16_t LogPwrSwitchMode : 2;
+ uint16_t CompoundDevice : 1;
+ uint16_t OverCurrentProtectMode : 2;
+ uint16_t TTThinkTime : 2;
+ uint16_t PortIndicatorsSupported : 1;
+ uint16_t Reserved : 8;
+ } __attribute__((packed));
+
+ uint8_t bPwrOn2PwrGood;
+ uint8_t bHubContrCurrent;
+} __attribute__((packed));
+
+struct HubEvent {
+
+ union {
+
+ struct {
+ uint16_t bmStatus; // port status bits
+ uint16_t bmChange; // port status change bits
+ } __attribute__((packed));
+ uint32_t bmEvent;
+ uint8_t evtBuff[4];
+ };
+} __attribute__((packed));
+
+class USBHub : USBDeviceConfig {
+ static bool bResetInitiated; // True when reset is triggered
+
+ USB *pUsb; // USB class instance pointer
+
+ EpInfo epInfo[2]; // interrupt endpoint info structure
+
+ uint8_t bAddress; // address
+ uint8_t bNbrPorts; // number of ports
+ // uint8_t bInitState; // initialization state variable
+ uint32_t qNextPollTime; // next poll time
+ bool bPollEnable; // poll enable flag
+
+ uint8_t CheckHubStatus();
+ uint8_t PortStatusChange(uint8_t port, HubEvent &evt);
+
+public:
+ USBHub(USB *p);
+
+ uint8_t ClearHubFeature(uint8_t fid);
+ uint8_t ClearPortFeature(uint8_t fid, uint8_t port, uint8_t sel = 0);
+ uint8_t GetHubDescriptor(uint8_t index, uint16_t nbytes, uint8_t *dataptr);
+ uint8_t GetHubStatus(uint16_t nbytes, uint8_t* dataptr);
+ uint8_t GetPortStatus(uint8_t port, uint16_t nbytes, uint8_t* dataptr);
+ uint8_t SetHubDescriptor(uint8_t port, uint16_t nbytes, uint8_t* dataptr);
+ uint8_t SetHubFeature(uint8_t fid);
+ uint8_t SetPortFeature(uint8_t fid, uint8_t port, uint8_t sel = 0);
+
+ void PrintHubStatus();
+
+ uint8_t Init(uint8_t parent, uint8_t port, bool lowspeed);
+ uint8_t Release();
+ uint8_t Poll();
+ void ResetHubPort(uint8_t port);
+
+ virtual uint8_t GetAddress() {
+ return bAddress;
+ };
+
+ virtual bool DEVCLASSOK(uint8_t klass) {
+ return (klass == 0x09);
+ }
+
+};
+
+// Clear Hub Feature
+
+inline uint8_t USBHub::ClearHubFeature(uint8_t fid) {
+ return ( pUsb->ctrlReq(bAddress, 0, bmREQ_CLEAR_HUB_FEATURE, USB_REQUEST_CLEAR_FEATURE, fid, 0, 0, 0, 0, NULL, NULL));
+}
+// Clear Port Feature
+
+inline uint8_t USBHub::ClearPortFeature(uint8_t fid, uint8_t port, uint8_t sel) {
+ return ( pUsb->ctrlReq(bAddress, 0, bmREQ_CLEAR_PORT_FEATURE, USB_REQUEST_CLEAR_FEATURE, fid, 0, ((0x0000 | port) | (sel << 8)), 0, 0, NULL, NULL));
+}
+// Get Hub Descriptor
+
+inline uint8_t USBHub::GetHubDescriptor(uint8_t index, uint16_t nbytes, uint8_t *dataptr) {
+ return ( pUsb->ctrlReq(bAddress, 0, bmREQ_GET_HUB_DESCRIPTOR, USB_REQUEST_GET_DESCRIPTOR, index, 0x29, 0, nbytes, nbytes, dataptr, NULL));
+}
+// Get Hub Status
+
+inline uint8_t USBHub::GetHubStatus(uint16_t nbytes, uint8_t* dataptr) {
+ return ( pUsb->ctrlReq(bAddress, 0, bmREQ_GET_HUB_STATUS, USB_REQUEST_GET_STATUS, 0, 0, 0x0000, nbytes, nbytes, dataptr, NULL));
+}
+// Get Port Status
+
+inline uint8_t USBHub::GetPortStatus(uint8_t port, uint16_t nbytes, uint8_t* dataptr) {
+ return ( pUsb->ctrlReq(bAddress, 0, bmREQ_GET_PORT_STATUS, USB_REQUEST_GET_STATUS, 0, 0, port, nbytes, nbytes, dataptr, NULL));
+}
+// Set Hub Descriptor
+
+inline uint8_t USBHub::SetHubDescriptor(uint8_t port, uint16_t nbytes, uint8_t* dataptr) {
+ return ( pUsb->ctrlReq(bAddress, 0, bmREQ_SET_HUB_DESCRIPTOR, USB_REQUEST_SET_DESCRIPTOR, 0, 0, port, nbytes, nbytes, dataptr, NULL));
+}
+// Set Hub Feature
+
+inline uint8_t USBHub::SetHubFeature(uint8_t fid) {
+ return ( pUsb->ctrlReq(bAddress, 0, bmREQ_SET_HUB_FEATURE, USB_REQUEST_SET_FEATURE, fid, 0, 0, 0, 0, NULL, NULL));
+}
+// Set Port Feature
+
+inline uint8_t USBHub::SetPortFeature(uint8_t fid, uint8_t port, uint8_t sel) {
+ return ( pUsb->ctrlReq(bAddress, 0, bmREQ_SET_PORT_FEATURE, USB_REQUEST_SET_FEATURE, fid, 0, (((0x0000 | sel) << 8) | port), 0, 0, NULL, NULL));
+}
+
+void PrintHubPortStatus(USB *usbptr, uint8_t addr, uint8_t port, bool print_changes = false);
+
+#endif // __USBHUB_H__