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/**
* \file
*
* \brief Interface of the USB Device Controller (UDC)
*
* Copyright (c) 2009-2015 Atmel Corporation. All rights reserved.
*
* \asf_license_start
*
* \page License
*
* 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. The name of Atmel may not be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 4. This software may only be redistributed and used in connection with an
* Atmel microcontroller product.
*
* THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL 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.
*
* \asf_license_stop
*
*/
/*
* Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
*/
#ifndef _UDC_H_
#define _UDC_H_
#include "conf_usb.h"
#include "usb_protocol.h"
#include "udc_desc.h"
#include "udd.h"
#if USB_DEVICE_VENDOR_ID == 0
# error USB_DEVICE_VENDOR_ID cannot be equal to 0
#endif
#if USB_DEVICE_PRODUCT_ID == 0
# error USB_DEVICE_PRODUCT_ID cannot be equal to 0
#endif
#ifdef __cplusplus
extern "C" {
#endif
/**
* \ingroup usb_device_group
* \defgroup udc_group USB Device Controller (UDC)
*
* The UDC provides a high-level abstraction of the usb device.
* You can use these functions to control the main device state
* (start/attach/wakeup).
*
* \section USB_DEVICE_CONF USB Device Custom configuration
* The following USB Device configuration must be included in the conf_usb.h
* file of the application.
*
* USB_DEVICE_VENDOR_ID (Word)<br>
* Vendor ID provided by USB org (ATMEL 0x03EB).
*
* USB_DEVICE_PRODUCT_ID (Word)<br>
* Product ID (Referenced in usb_atmel.h).
*
* USB_DEVICE_MAJOR_VERSION (Byte)<br>
* Major version of the device
*
* USB_DEVICE_MINOR_VERSION (Byte)<br>
* Minor version of the device
*
* USB_DEVICE_MANUFACTURE_NAME (string)<br>
* ASCII name for the manufacture
*
* USB_DEVICE_PRODUCT_NAME (string)<br>
* ASCII name for the product
*
* USB_DEVICE_SERIAL_NAME (string)<br>
* ASCII name to enable and set a serial number
*
* USB_DEVICE_POWER (Numeric)<br>
* (unit mA) Maximum device power
*
* USB_DEVICE_ATTR (Byte)<br>
* USB attributes available:
* - USB_CONFIG_ATTR_SELF_POWERED
* - USB_CONFIG_ATTR_REMOTE_WAKEUP
* Note: if remote wake enabled then defines remotewakeup callbacks,
* see Table 5-2. External API from UDC - Callback
*
* USB_DEVICE_LOW_SPEED (Only defined)<br>
* Force the USB Device to run in low speed
*
* USB_DEVICE_HS_SUPPORT (Only defined)<br>
* Authorize the USB Device to run in high speed
*
* USB_DEVICE_MAX_EP (Byte)<br>
* Define the maximum endpoint number used by the USB Device.<br>
* This one is already defined in UDI default configuration.
* Ex:
* - When endpoint control 0x00, endpoint 0x01 and
* endpoint 0x82 is used then USB_DEVICE_MAX_EP=2
* - When only endpoint control 0x00 is used then USB_DEVICE_MAX_EP=0
* - When endpoint 0x01 and endpoint 0x81 is used then USB_DEVICE_MAX_EP=1<br>
* (configuration not possible on USBB interface)
* @{
*/
/**
* \brief Authorizes the VBUS event
*
* \return true, if the VBUS monitoring is possible.
*
* \section udc_vbus_monitoring VBus monitoring used cases
*
* The VBus monitoring is used only for USB SELF Power application.
*
* - By default the USB device is automatically attached when Vbus is high
* or when USB is start for devices without internal Vbus monitoring.
* conf_usb.h file does not contains define USB_DEVICE_ATTACH_AUTO_DISABLE.
* \code //#define USB_DEVICE_ATTACH_AUTO_DISABLE \endcode
*
* - Add custom VBUS monitoring. conf_usb.h file contains define
* USB_DEVICE_ATTACH_AUTO_DISABLE:
* \code #define USB_DEVICE_ATTACH_AUTO_DISABLE \endcode
* User C file contains:
* \code
// Authorize VBUS monitoring
if (!udc_include_vbus_monitoring()) {
// Implement custom VBUS monitoring via GPIO or other
}
Event_VBUS_present() // VBUS interrupt or GPIO interrupt or other
{
// Attach USB Device
udc_attach();
}
\endcode
*
* - Case of battery charging. conf_usb.h file contains define
* USB_DEVICE_ATTACH_AUTO_DISABLE:
* \code #define USB_DEVICE_ATTACH_AUTO_DISABLE \endcode
* User C file contains:
* \code
Event VBUS present() // VBUS interrupt or GPIO interrupt or ..
{
// Authorize battery charging, but wait key press to start USB.
}
Event Key press()
{
// Stop batteries charging
// Start USB
udc_attach();
}
\endcode
*/
static inline bool udc_include_vbus_monitoring(void) {
return udd_include_vbus_monitoring();
}
/*! \brief Start the USB Device stack
*/
void udc_start(void);
/*! \brief Stop the USB Device stack
*/
void udc_stop(void);
/**
* \brief Attach device to the bus when possible
*
* \warning If a VBus control is included in driver,
* then it will attach device when an acceptable Vbus
* level from the host is detected.
*/
static inline void udc_attach(void) {
udd_attach();
}
/**
* \brief Detaches the device from the bus
*
* The driver must remove pull-up on USB line D- or D+.
*/
static inline void udc_detach(void) {
udd_detach();
}
/*! \brief The USB driver sends a resume signal called \e "Upstream Resume"
* This is authorized only when the remote wakeup feature is enabled by host.
*/
inline void udc_remotewakeup(void) {
udd_send_remotewakeup();
}
/**
* \brief Returns a pointer on the current interface descriptor
*
* \return pointer on the current interface descriptor.
*/
usb_iface_desc_t UDC_DESC_STORAGE *udc_get_interface_desc(void);
//@}
/**
* \ingroup usb_group
* \defgroup usb_device_group USB Stack Device
*
* This module includes USB Stack Device implementation.
* The stack is divided in three parts:
* - USB Device Controller (UDC) provides USB chapter 9 compliance
* - USB Device Interface (UDI) provides USB Class compliance
* - USB Device Driver (UDD) provides USB Driver for each Atmel MCU
* Many USB Device applications can be implemented on Atmel MCU.
* Atmel provides many application notes for different applications:
* - AVR4900, provides general information about Device Stack
* - AVR4901, explains how to create a new class
* - AVR4902, explains how to create a composite device
* - AVR49xx, all device classes provided in ASF have an application note
*
* A basic USB knowledge is required to understand the USB Device
* Class application notes (HID,MS,CDC,PHDC,...).
* Then, to create an USB device with
* only one class provided by ASF, refer directly to the application note
* corresponding to this USB class. The USB Device application note for
* New Class and Composite is dedicated to advanced USB users.
*
* @{
*/
//! @}
#ifdef __cplusplus
}
#endif
#endif // _UDC_H_
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