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Diffstat (limited to 'LUFA/Drivers/USB/LowLevel/Device.h')
| -rw-r--r-- | LUFA/Drivers/USB/LowLevel/Device.h | 247 |
1 files changed, 247 insertions, 0 deletions
diff --git a/LUFA/Drivers/USB/LowLevel/Device.h b/LUFA/Drivers/USB/LowLevel/Device.h new file mode 100644 index 0000000..631c883 --- /dev/null +++ b/LUFA/Drivers/USB/LowLevel/Device.h @@ -0,0 +1,247 @@ +/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2010.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+/*
+ Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+ Permission to use, copy, modify, distribute, and sell this
+ software and its documentation for any purpose is hereby granted
+ without fee, provided that the above copyright notice appear in
+ all copies and that both that the copyright notice and this
+ permission notice and warranty disclaimer appear in supporting
+ documentation, and that the name of the author not be used in
+ advertising or publicity pertaining to distribution of the
+ software without specific, written prior permission.
+
+ The author disclaim all warranties with regard to this
+ software, including all implied warranties of merchantability
+ and fitness. In no event shall the author be liable for any
+ special, indirect or consequential damages or any damages
+ whatsoever resulting from loss of use, data or profits, whether
+ in an action of contract, negligence or other tortious action,
+ arising out of or in connection with the use or performance of
+ this software.
+*/
+
+/** \file
+ * \brief USB device mode definitions.
+ *
+ * This file contains structures, function prototypes and macros related to USB device mode.
+ *
+ * \note This file should not be included directly. It is automatically included as needed by the USB driver
+ * dispatch header located in LUFA/Drivers/USB/USB.h.
+ */
+
+/** \ingroup Group_USB
+ * @defgroup Group_Device Device Management
+ *
+ * USB Device mode related macros and enums. This module contains macros and enums which are used when
+ * the USB controller is initialized in device mode.
+ *
+ * @{
+ */
+
+#ifndef __USBDEVICE_H__
+#define __USBDEVICE_H__
+
+ /* Includes: */
+ #include <avr/io.h>
+ #include <avr/pgmspace.h>
+ #include <avr/eeprom.h>
+
+ #include "../../../Common/Common.h"
+ #include "../HighLevel/StdDescriptors.h"
+ #include "USBInterrupt.h"
+ #include "Endpoint.h"
+
+ /* Preprocessor Checks: */
+ #if (defined(USE_RAM_DESCRIPTORS) && defined(USE_EEPROM_DESCRIPTORS))
+ #error USE_RAM_DESCRIPTORS and USE_EEPROM_DESCRIPTORS are mutually exclusive.
+ #endif
+
+ #if !defined(__INCLUDE_FROM_USB_DRIVER)
+ #error Do not include this file directly. Include LUFA/Drivers/USB/USB.h instead.
+ #endif
+
+ /* Public Interface - May be used in end-application: */
+ /* Macros: */
+ /** \name USB Device Mode Option Masks */
+ //@{
+ #if defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR) || defined(__DOXYGEN__)
+ /** Mask for the Options parameter of the \ref USB_Init() function. This indicates that the
+ * USB interface should be initialized in low speed (1.5Mb/s) mode.
+ *
+ * \note Low Speed mode is not available on all USB AVR models.
+ * \n
+ *
+ * \note Restrictions apply on the number, size and type of endpoints which can be used
+ * when running in low speed mode - refer to the USB 2.0 specification.
+ */
+ #define USB_DEVICE_OPT_LOWSPEED (1 << 0)
+ #endif
+
+ /** Mask for the Options parameter of the \ref USB_Init() function. This indicates that the
+ * USB interface should be initialized in full speed (12Mb/s) mode.
+ */
+ #define USB_DEVICE_OPT_FULLSPEED (0 << 0)
+ //@}
+
+ /* Function Prototypes: */
+ /** Sends a Remote Wakeup request to the host. This signals to the host that the device should
+ * be taken out of suspended mode, and communications should resume.
+ *
+ * Typically, this is implemented so that HID devices (mice, keyboards, etc.) can wake up the
+ * host computer when the host has suspended all USB devices to enter a low power state.
+ *
+ * \note This macro should only be used if the device has indicated to the host that it
+ * supports the Remote Wakeup feature in the device descriptors, and should only be
+ * issued if the host is currently allowing remote wakeup events from the device (i.e.,
+ * the \ref USB_RemoteWakeupEnabled flag is set). When the NO_DEVICE_REMOTE_WAKEUP compile
+ * time option is used, this macro is unavailable.
+ * \n\n
+ *
+ * \note The USB clock must be running for this function to operate. If the stack is initialized with
+ * the \ref USB_OPT_MANUAL_PLL option enabled, the user must ensure that the PLL is running
+ * before attempting to call this function.
+ *
+ * \see \ref Group_Descriptors for more information on the RMWAKEUP feature and device descriptors.
+ */
+ void USB_Device_SendRemoteWakeup(void);
+
+ /* Type Defines: */
+ enum USB_Device_States_t
+ {
+ DEVICE_STATE_Unattached = 0, /**< Internally implemented by the library. This state indicates
+ * that the device is not currently connected to a host.
+ */
+ DEVICE_STATE_Powered = 1, /**< Internally implemented by the library. This state indicates
+ * that the device is connected to a host, but enumeration has not
+ * yet begun.
+ */
+ DEVICE_STATE_Default = 2, /**< Internally implemented by the library. This state indicates
+ * that the device's USB bus has been reset by the host and it is
+ * now waiting for the host to begin the enumeration process.
+ */
+ DEVICE_STATE_Addressed = 3, /**< Internally implemented by the library. This state indicates
+ * that the device has been addressed by the USB Host, but is not
+ * yet configured.
+ */
+ DEVICE_STATE_Configured = 4, /**< May be implemented by the user project. This state indicates
+ * that the device has been enumerated by the host and is ready
+ * for USB communications to begin.
+ */
+ DEVICE_STATE_Suspended = 5, /**< May be implemented by the user project. This state indicates
+ * that the USB bus has been suspended by the host, and the device
+ * should power down to a minimal power level until the bus is
+ * resumed.
+ */
+ };
+
+ /* Inline Functions: */
+ /** Returns the current USB frame number, when in device mode. Every millisecond the USB bus is active (i.e. enumerated to a host)
+ * the frame number is incremented by one.
+ */
+ static inline uint16_t USB_Device_GetFrameNumber(void)
+ {
+ return UDFNUM;
+ }
+
+ #if !defined(NO_SOF_EVENTS)
+ /** Enables the device mode Start Of Frame events. When enabled, this causes the
+ * \ref EVENT_USB_Device_StartOfFrame() event to fire once per millisecond, synchronized to the USB bus,
+ * at the start of each USB frame when enumerated in device mode.
+ *
+ * \note Not available when the NO_SOF_EVENTS compile time token is defined.
+ */
+ static inline void USB_Device_EnableSOFEvents(void) ATTR_ALWAYS_INLINE;
+ static inline void USB_Device_EnableSOFEvents(void)
+ {
+ USB_INT_Enable(USB_INT_SOFI);
+ }
+
+ /** Disables the device mode Start Of Frame events. When disabled, this stops the firing of the
+ * \ref EVENT_USB_Device_StartOfFrame() event when enumerated in device mode.
+ *
+ * \note Not available when the NO_SOF_EVENTS compile time token is defined.
+ */
+ static inline void USB_Device_DisableSOFEvents(void) ATTR_ALWAYS_INLINE;
+ static inline void USB_Device_DisableSOFEvents(void)
+ {
+ USB_INT_Disable(USB_INT_SOFI);
+ }
+ #endif
+
+ /* Function Prototypes: */
+ /** Function to retrieve a given descriptor's size and memory location from the given descriptor type value,
+ * index and language ID. This function MUST be overridden in the user application (added with full, identical
+ * prototype and name so that the library can call it to retrieve descriptor data.
+ *
+ * \param[in] wValue The type of the descriptor to retrieve in the upper byte, and the index in the
+ * lower byte (when more than one descriptor of the given type exists, such as the
+ * case of string descriptors). The type may be one of the standard types defined
+ * in the DescriptorTypes_t enum, or may be a class-specific descriptor type value.
+ * \param[in] wIndex The language ID of the string to return if the wValue type indicates DTYPE_String,
+ * otherwise zero for standard descriptors, or as defined in a class-specific
+ * standards.
+ * \param[out] DescriptorAddress Pointer to the descriptor in memory. This should be set by the routine to
+ * the address of the descriptor.
+ * \param[out] MemoryAddressSpace A value from the \ref USB_DescriptorMemorySpaces_t enum to indicate the memory
+ * space in which the descriptor is stored. This parameter does not exist when one
+ * of the USE_*_DESCRIPTORS compile time options is used.
+ *
+ * \note By default, the library expects all descriptors to be located in flash memory via the PROGMEM attribute.
+ * If descriptors should be located in RAM or EEPROM instead (to speed up access in the case of RAM, or to
+ * allow the descriptors to be changed dynamically at runtime) either the USE_RAM_DESCRIPTORS or the
+ * USE_EEPROM_DESCRIPTORS tokens may be defined in the project makefile and passed to the compiler by the -D
+ * switch.
+ *
+ * \return Size in bytes of the descriptor if it exists, zero or \ref NO_DESCRIPTOR otherwise.
+ */
+ uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
+ const uint8_t wIndex,
+ const void** const DescriptorAddress
+ #if !defined(USE_FLASH_DESCRIPTORS) && !defined(USE_EEPROM_DESCRIPTORS) && !defined(USE_RAM_DESCRIPTORS)
+ , uint8_t* MemoryAddressSpace
+ #endif
+ ) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+
+ /* Private Interface - For use in library only: */
+ #if !defined(__DOXYGEN__)
+ /* Inline Functions: */
+ #if (defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR))
+ static inline void USB_Device_SetLowSpeed(void) ATTR_ALWAYS_INLINE;
+ static inline void USB_Device_SetLowSpeed(void)
+ {
+ UDCON |= (1 << LSM);
+ }
+
+ static inline void USB_Device_SetFullSpeed(void) ATTR_ALWAYS_INLINE;
+ static inline void USB_Device_SetFullSpeed(void)
+ {
+ UDCON &= ~(1 << LSM);
+ }
+ #endif
+
+ static inline void USB_Device_SetDeviceAddress(const uint8_t Address) ATTR_ALWAYS_INLINE;
+ static inline void USB_Device_SetDeviceAddress(const uint8_t Address)
+ {
+ UDADDR = ((UDADDR & (1 << ADDEN)) | (Address & 0x7F));
+ UDADDR |= (1 << ADDEN);
+ }
+
+ static inline bool USB_Device_IsAddressSet(void) ATTR_ALWAYS_INLINE;
+ static inline bool USB_Device_IsAddressSet(void)
+ {
+ return (UDADDR & (1 << ADDEN));
+ }
+ #endif
+
+#endif
+
+/** @} */
+
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