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diff --git a/src/host/usbh.h b/src/host/usbh.h
new file mode 100644
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+/**************************************************************************/
+/*!
+    @file     usbh.h
+    @author   hathach (tinyusb.org)
+
+    @section LICENSE
+
+    Software License Agreement (BSD License)
+
+    Copyright (c) 2013, hathach (tinyusb.org)
+    All rights reserved.
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions are met:
+    1. Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in the
+    documentation and/or other materials provided with the distribution.
+    3. Neither the name of the copyright holders nor the
+    names of its contributors may be used to endorse or promote products
+    derived from this software without specific prior written permission.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
+    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+    DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
+    DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+    INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+    LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION HOWEVER CAUSED AND
+    ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+    INCLUDING NEGLIGENCE OR OTHERWISE ARISING IN ANY WAY OUT OF THE USE OF THIS
+    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+    This file is part of the tinyusb stack.
+*/
+/**************************************************************************/
+
+/** \ingroup group_usbh USB Host Core (USBH)
+ *  @{ */
+
+#ifndef _TUSB_USBH_H_
+#define _TUSB_USBH_H_
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+//--------------------------------------------------------------------+
+// INCLUDE
+//--------------------------------------------------------------------+
+#include "osal/osal.h" // TODO refractor move to common.h ?
+#include "hcd.h"
+
+//--------------------------------------------------------------------+
+// MACRO CONSTANT TYPEDEF
+//--------------------------------------------------------------------+
+typedef enum tusb_interface_status_{
+  TUSB_INTERFACE_STATUS_READY = 0,
+  TUSB_INTERFACE_STATUS_BUSY,
+  TUSB_INTERFACE_STATUS_COMPLETE,
+  TUSB_INTERFACE_STATUS_ERROR,
+  TUSB_INTERFACE_STATUS_INVALID_PARA
+} tusb_interface_status_t;
+
+typedef struct {
+  uint8_t class_code;
+
+  void (* const init) (void);
+  bool (* const open)(uint8_t rhport, uint8_t dev_addr, tusb_desc_interface_t const * itf_desc, uint16_t* outlen);
+  void (* const isr) (uint8_t dev_addr, uint8_t ep_addr, xfer_result_t result, uint32_t len);
+  void (* const close) (uint8_t);
+} host_class_driver_t;
+//--------------------------------------------------------------------+
+// INTERNAL OBJECT & FUNCTION DECLARATION
+//--------------------------------------------------------------------+
+
+//--------------------------------------------------------------------+
+// APPLICATION API
+//--------------------------------------------------------------------+
+//tusb_error_t tusbh_configuration_set     (uint8_t dev_addr, uint8_t configure_number) ATTR_WARN_UNUSED_RESULT;
+tusb_device_state_t tuh_device_get_state (uint8_t dev_addr) ATTR_WARN_UNUSED_RESULT ATTR_PURE;
+static inline bool tuh_device_is_configured(uint8_t dev_addr) ATTR_ALWAYS_INLINE ATTR_WARN_UNUSED_RESULT ATTR_PURE;
+static inline bool tuh_device_is_configured(uint8_t dev_addr)
+{
+  return tuh_device_get_state(dev_addr) == TUSB_DEVICE_STATE_CONFIGURED;
+}
+
+//--------------------------------------------------------------------+
+// APPLICATION CALLBACK
+//--------------------------------------------------------------------+
+ATTR_WEAK uint8_t tuh_device_attached_cb (tusb_desc_device_t const *p_desc_device)  ATTR_WARN_UNUSED_RESULT;
+
+/** Callback invoked when device is mounted (configured) */
+ATTR_WEAK void tuh_mount_cb (uint8_t dev_addr);
+
+/** Callback invoked when device is unmounted (bus reset/unplugged) */
+ATTR_WEAK void tuh_umount_cb(uint8_t dev_addr);
+
+//--------------------------------------------------------------------+
+// CLASS-USBH & INTERNAL API
+//--------------------------------------------------------------------+
+#ifdef _TINY_USB_SOURCE_FILE_
+
+bool usbh_init(void);
+void usbh_task(void* param);
+
+bool usbh_control_xfer (uint8_t dev_addr, tusb_control_request_t* request, uint8_t* data);
+
+#endif
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif /* _TUSB_USBH_H_ */
+
+/** @} */