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author | Jack Humbert <jack.humb@gmail.com> | 2017-07-07 21:33:29 +0200 |
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committer | GitHub <noreply@github.com> | 2017-07-07 21:33:29 +0200 |
commit | 9de443cbf10ac41bc15762c9c83f138f51dd3b9a (patch) | |
tree | d8ddcb428e0b7d9773a1e52c42b60bdca2658beb /lib/lufa/LUFA/Drivers/USB/Core/XMEGA/USBController_XMEGA.h | |
parent | 88b3d051b21cb1ddacc6353c5d59b19f03f3a242 (diff) | |
parent | 1c26468ad5a0701e244c99cbcbc547c93b75d515 (diff) | |
download | qmk_firmware-9de443cbf10ac41bc15762c9c83f138f51dd3b9a.tar.gz qmk_firmware-9de443cbf10ac41bc15762c9c83f138f51dd3b9a.tar.xz |
Merge pull request #1471 from qmk/lufa_lib
Update LUFA and move it to /lib/lufa
Diffstat (limited to 'lib/lufa/LUFA/Drivers/USB/Core/XMEGA/USBController_XMEGA.h')
-rw-r--r-- | lib/lufa/LUFA/Drivers/USB/Core/XMEGA/USBController_XMEGA.h | 313 |
1 files changed, 313 insertions, 0 deletions
diff --git a/lib/lufa/LUFA/Drivers/USB/Core/XMEGA/USBController_XMEGA.h b/lib/lufa/LUFA/Drivers/USB/Core/XMEGA/USBController_XMEGA.h new file mode 100644 index 000000000..6bab03a7d --- /dev/null +++ b/lib/lufa/LUFA/Drivers/USB/Core/XMEGA/USBController_XMEGA.h @@ -0,0 +1,313 @@ +/* + LUFA Library + Copyright (C) Dean Camera, 2017. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2017 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 disclaims 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 Controller definitions for the AVR XMEGA microcontrollers. + * \copydetails Group_USBManagement_XMEGA + * + * \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_USBManagement + * \defgroup Group_USBManagement_XMEGA USB Interface Management (XMEGA) + * \brief USB Controller definitions for the AVR XMEGA microcontrollers. + * + * Functions, macros, variables, enums and types related to the setup and management of the USB interface. + * + * @{ + */ + +#ifndef __USBCONTROLLER_XMEGA_H__ +#define __USBCONTROLLER_XMEGA_H__ + + /* Includes: */ + #include "../../../../Common/Common.h" + #include "../USBMode.h" + #include "../Events.h" + #include "../USBTask.h" + #include "../USBInterrupt.h" + + /* Private Interface - For use in library only: */ + #if !defined(__DOXYGEN__) + /* Macros: */ + #if defined(MAX_ENDPOINT_INDEX) + #define ENDPOINT_TABLE_COUNT (MAX_ENDPOINT_INDEX + 1) + #else + #define ENDPOINT_TABLE_COUNT 16 + #endif + + /* Type Defines: */ + typedef struct + { + struct + { + USB_EP_t OUT; + USB_EP_t IN; + } Endpoints[ENDPOINT_TABLE_COUNT]; + uint16_t FrameNum; + } ATTR_PACKED USB_EndpointTable_t; + + /* External Variables: */ + extern uint8_t USB_EndpointTable[]; + #endif + + /* Includes: */ + #if defined(USB_CAN_BE_DEVICE) || defined(__DOXYGEN__) + #include "../Device.h" + #include "../Endpoint.h" + #include "../DeviceStandardReq.h" + #include "../EndpointStream.h" + #endif + + /* Enable C linkage for C++ Compilers: */ + #if defined(__cplusplus) + extern "C" { + #endif + + /* Preprocessor Checks and Defines: */ + #if !defined(__INCLUDE_FROM_USB_DRIVER) + #error Do not include this file directly. Include LUFA/Drivers/USB/USB.h instead. + #endif + + #if !defined(F_USB) + #error F_USB is not defined. You must define F_USB to the frequency of the unprescaled USB controller clock in your project makefile. + #endif + + #if ((F_USB % 6000000) || (F_USB < 6000000)) + #error Invalid F_USB specified. F_USB must be a multiple of 6MHz for USB Low Speed operation, and a multiple of 48MHz for Full Speed operation. + #endif + + /* Public Interface - May be used in end-application: */ + /* Macros: */ + /** \name USB Controller Option Masks */ + //@{ + /** Sets the USB bus interrupt priority level to be low priority. The USB bus interrupt is used for Start of Frame events, bus suspend + * and resume events, bus reset events and other events related to the management of the USB bus. + */ + #define USB_OPT_BUSEVENT_PRILOW ((0 << 2) | (0 << 1)) + + /** Sets the USB bus interrupt priority level to be medium priority. The USB bus interrupt is used for Start of Frame events, bus suspend + * and resume events, bus reset events and other events related to the management of the USB bus. + */ + #define USB_OPT_BUSEVENT_PRIMED ((0 << 2) | (1 << 1)) + + /** Sets the USB bus interrupt priority level to be high priority. The USB bus interrupt is used for Start of Frame events, bus suspend + * and resume events, bus reset events and other events related to the management of the USB bus. + */ + #define USB_OPT_BUSEVENT_PRIHIGH ((1 << 2) | (0 << 1)) + + /** Sets the USB controller to source its clock from the internal RC 32MHz clock, once it has been DFLL calibrated to 48MHz. */ + #define USB_OPT_RC32MCLKSRC (0 << 3) + + /** Sets the USB controller to source its clock from the internal PLL. */ + #define USB_OPT_PLLCLKSRC (1 << 3) + //@} + + #if !defined(USB_STREAM_TIMEOUT_MS) || defined(__DOXYGEN__) + /** Constant for the maximum software timeout period of the USB data stream transfer functions + * (both control and standard) when in either device or host mode. If the next packet of a stream + * is not received or acknowledged within this time period, the stream function will fail. + * + * This value may be overridden in the user project makefile as the value of the + * \ref USB_STREAM_TIMEOUT_MS token, and passed to the compiler using the -D switch. + */ + #define USB_STREAM_TIMEOUT_MS 100 + #endif + + /* Inline Functions: */ + /** Detaches the device from the USB bus. This has the effect of removing the device from any + * attached host, ceasing USB communications. If no host is present, this prevents any host from + * enumerating the device once attached until \ref USB_Attach() is called. + */ + static inline void USB_Detach(void) ATTR_ALWAYS_INLINE; + static inline void USB_Detach(void) + { + USB.CTRLB &= ~USB_ATTACH_bm; + } + + /** Attaches the device to the USB bus. This announces the device's presence to any attached + * USB host, starting the enumeration process. If no host is present, attaching the device + * will allow for enumeration once a host is connected to the device. + * + * This is inexplicably also required for proper operation while in host mode, to enable the + * attachment of a device to the host. This is despite the bit being located in the device-mode + * register and despite the datasheet making no mention of its requirement in host mode. + */ + static inline void USB_Attach(void) ATTR_ALWAYS_INLINE; + static inline void USB_Attach(void) + { + USB.CTRLB |= USB_ATTACH_bm; + } + + /* Function Prototypes: */ + /** Main function to initialize and start the USB interface. Once active, the USB interface will + * allow for device connection to a host when in device mode, or for device enumeration while in + * host mode. + * + * As the USB library relies on interrupts for the device and host mode enumeration processes, + * the user must enable global interrupts before or shortly after this function is called. In + * device mode, interrupts must be enabled within 500ms of this function being called to ensure + * that the host does not time out whilst enumerating the device. In host mode, interrupts may be + * enabled at the application's leisure however enumeration will not begin of an attached device + * until after this has occurred. + * + * Calling this function when the USB interface is already initialized will cause a complete USB + * interface reset and re-enumeration. + * + * \param[in] Mode Mask indicating what mode the USB interface is to be initialized to, a value + * from the \ref USB_Modes_t enum. + * \note This parameter does not exist on devices with only one supported USB + * mode (device or host). + * + * \param[in] Options Mask indicating the options which should be used when initializing the USB + * interface to control the USB interface's behavior. This should be comprised of + * a \c USB_OPT_REG_* mask to control the regulator, a \c USB_OPT_*_PLL mask to control the + * PLL, and a \c USB_DEVICE_OPT_* mask (when the device mode is enabled) to set the device + * mode speed. + * + * \note To reduce the FLASH requirements of the library if only device or host mode is required, + * the mode can be statically set in the project makefile by defining the token \c USB_DEVICE_ONLY + * (for device mode) or \c USB_HOST_ONLY (for host mode), passing the token to the compiler + * via the -D switch. If the mode is statically set, this parameter does not exist in the + * function prototype. + * \n\n + * + * \note To reduce the FLASH requirements of the library if only fixed settings are required, + * the options may be set statically in the same manner as the mode (see the Mode parameter of + * this function). To statically set the USB options, pass in the \c USE_STATIC_OPTIONS token, + * defined to the appropriate options masks. When the options are statically set, this + * parameter does not exist in the function prototype. + * \n\n + * + * \note The mode parameter does not exist on devices where only one mode is possible, such as USB + * AVR models which only implement the USB device mode in hardware. + * + * \see \ref Group_Device for the \c USB_DEVICE_OPT_* masks. + */ + void USB_Init( + #if defined(USB_CAN_BE_BOTH) || defined(__DOXYGEN__) + const uint8_t Mode + #endif + + #if (defined(USB_CAN_BE_BOTH) && !defined(USE_STATIC_OPTIONS)) || defined(__DOXYGEN__) + , + #elif (!defined(USB_CAN_BE_BOTH) && defined(USE_STATIC_OPTIONS)) + void + #endif + + #if !defined(USE_STATIC_OPTIONS) || defined(__DOXYGEN__) + const uint8_t Options + #endif + ); + + /** Shuts down the USB interface. This turns off the USB interface after deallocating all USB FIFO + * memory, endpoints and pipes. When turned off, no USB functionality can be used until the interface + * is restarted with the \ref USB_Init() function. + */ + void USB_Disable(void); + + /** Resets the interface, when already initialized. This will re-enumerate the device if already connected + * to a host, or re-enumerate an already attached device when in host mode. + */ + void USB_ResetInterface(void); + + /* Global Variables: */ + #if defined(USB_CAN_BE_BOTH) || defined(__DOXYGEN__) + /** Indicates the mode that the USB interface is currently initialized to, a value from the + * \ref USB_Modes_t enum. + * + * \attention This variable should be treated as read-only in the user application, and never manually + * changed in value. + * + * \note When the controller is initialized into UID auto-detection mode, this variable will hold the + * currently selected USB mode (i.e. \ref USB_MODE_Device or \ref USB_MODE_Host). If the controller + * is fixed into a specific mode (either through the \c USB_DEVICE_ONLY or \c USB_HOST_ONLY compile time + * options, or a limitation of the USB controller in the chosen device model) this will evaluate to + * a constant of the appropriate value and will never evaluate to \ref USB_MODE_None even when the + * USB interface is not initialized. + */ + extern volatile uint8_t USB_CurrentMode; + #elif defined(USB_CAN_BE_HOST) + #define USB_CurrentMode USB_MODE_Host + #elif defined(USB_CAN_BE_DEVICE) + #define USB_CurrentMode USB_MODE_Device + #endif + + #if !defined(USE_STATIC_OPTIONS) || defined(__DOXYGEN__) + /** Indicates the current USB options that the USB interface was initialized with when \ref USB_Init() + * was called. This value will be one of the \c USB_MODE_* masks defined elsewhere in this module. + * + * \attention This variable should be treated as read-only in the user application, and never manually + * changed in value. + */ + extern volatile uint8_t USB_Options; + #elif defined(USE_STATIC_OPTIONS) + #define USB_Options USE_STATIC_OPTIONS + #endif + + /* Private Interface - For use in library only: */ + #if !defined(__DOXYGEN__) + /* Function Prototypes: */ + #if defined(__INCLUDE_FROM_USB_CONTROLLER_C) + static void USB_Init_Device(void); + #endif + + /* Inline Functions: */ + static inline void USB_Controller_Enable(void) ATTR_ALWAYS_INLINE; + static inline void USB_Controller_Enable(void) + { + USB.CTRLA |= USB_ENABLE_bm; + } + + static inline void USB_Controller_Disable(void) ATTR_ALWAYS_INLINE; + static inline void USB_Controller_Disable(void) + { + USB.CTRLA &= ~USB_ENABLE_bm; + } + + static inline void USB_Controller_Reset(void) ATTR_ALWAYS_INLINE; + static inline void USB_Controller_Reset(void) + { + USB.CTRLA &= ~USB_ENABLE_bm; + USB.CTRLA |= USB_ENABLE_bm; + } + + #endif + + /* Disable C linkage for C++ Compilers: */ + #if defined(__cplusplus) + } + #endif + +#endif + +/** @} */ + |