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Diffstat (limited to 'LUFA/Drivers/USB/Class/Host/HID.h')
| -rw-r--r-- | LUFA/Drivers/USB/Class/Host/HID.h | 316 |
1 files changed, 316 insertions, 0 deletions
diff --git a/LUFA/Drivers/USB/Class/Host/HID.h b/LUFA/Drivers/USB/Class/Host/HID.h new file mode 100644 index 0000000..2d6fd9e --- /dev/null +++ b/LUFA/Drivers/USB/Class/Host/HID.h @@ -0,0 +1,316 @@ +/*
+ 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 Host mode driver for the library USB HID Class driver.
+ *
+ * Host mode driver for the library USB HID Class driver.
+ *
+ * \note This file should not be included directly. It is automatically included as needed by the USB module driver
+ * dispatch header located in LUFA/Drivers/USB.h.
+ */
+
+/** \ingroup Group_USBClassHID
+ * @defgroup Group_USBClassHIDHost HID Class Host Mode Driver
+ *
+ * \section Sec_Dependencies Module Source Dependencies
+ * The following files must be built with any user project that uses this module:
+ * - LUFA/Drivers/USB/Class/Host/HID.c <i>(Makefile source module name: LUFA_SRC_USBCLASS)</i>
+ * - LUFA/Drivers/USB/Class/Host/HIDParser.c <i>(Makefile source module name: LUFA_SRC_USB)</i>
+ *
+ * \section Module Description
+ * Host Mode USB Class driver framework interface, for the HID USB Class driver.
+ *
+ * @{
+ */
+
+#ifndef __HID_CLASS_HOST_H__
+#define __HID_CLASS_HOST_H__
+
+ /* Includes: */
+ #include "../../USB.h"
+ #include "../Common/HID.h"
+ #include "HIDParser.h"
+
+ /* Enable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ extern "C" {
+ #endif
+
+ /* Preprocessor Checks: */
+ #if !defined(__INCLUDE_FROM_HID_DRIVER)
+ #error Do not include this file directly. Include LUFA/Drivers/USB.h instead.
+ #endif
+
+ #if defined(__INCLUDE_FROM_HID_HOST_C) && defined(NO_STREAM_CALLBACKS)
+ #error The NO_STREAM_CALLBACKS compile time option cannot be used in projects using the library Class drivers.
+ #endif
+
+
+ /* Public Interface - May be used in end-application: */
+ /* Macros: */
+ /** Error code for some HID Host functions, indicating a logical (and not hardware) error. */
+ #define HID_ERROR_LOGICAL 0x80
+
+ /* Type Defines: */
+ /** \brief HID Class Host Mode Configuration and State Structure.
+ *
+ * Class state structure. An instance of this structure should be made within the user application,
+ * and passed to each of the HID class driver functions as the HIDInterfaceInfo parameter. This
+ * stores each HID interface's configuration and state information.
+ */
+ typedef struct
+ {
+ const struct
+ {
+ uint8_t DataINPipeNumber; /**< Pipe number of the HID interface's IN data pipe. */
+ bool DataINPipeDoubleBank; /**< Indicates if the HID interface's IN data pipe should use double banking. */
+
+ uint8_t DataOUTPipeNumber; /**< Pipe number of the HID interface's OUT data pipe. */
+ bool DataOUTPipeDoubleBank; /**< Indicates if the HID interface's OUT data pipe should use double banking. */
+
+ uint8_t HIDInterfaceProtocol; /**< HID interface protocol value to match against if a specific
+ * boot subclass protocol is required, a protocol value from the
+ * \ref HID_Descriptor_ClassSubclassProtocol_t enum.
+ */
+ #if !defined(HID_HOST_BOOT_PROTOCOL_ONLY)
+ HID_ReportInfo_t* HIDParserData; /**< HID parser data to store the parsed HID report data, when boot protocol
+ * is not used.
+ *
+ * \note When the HID_HOST_BOOT_PROTOCOL_ONLY compile time token is defined,
+ * this method is unavailable.
+ */
+ #endif
+ } Config; /**< Config data for the USB class interface within the device. All elements in this section
+ * <b>must</b> be set or the interface will fail to enumerate and operate correctly.
+ */
+ struct
+ {
+ bool IsActive; /**< Indicates if the current interface instance is connected to an attached device, valid
+ * after \ref HID_Host_ConfigurePipes() is called and the Host state machine is in the
+ * Configured state.
+ */
+ uint8_t InterfaceNumber; /**< Interface index of the HID interface within the attached device. */
+
+ uint16_t DataINPipeSize; /**< Size in bytes of the HID interface's IN data pipe. */
+ uint16_t DataOUTPipeSize; /**< Size in bytes of the HID interface's OUT data pipe. */
+
+ bool SupportsBootProtocol; /**< Indicates if the current interface instance supports the HID Boot
+ * Protocol when enabled via \ref HID_Host_SetBootProtocol().
+ */
+ bool DeviceUsesOUTPipe; /**< Indicates if the current interface instance uses a separate OUT data pipe for
+ * OUT reports, or if OUT reports are sent via the control pipe instead.
+ */
+ bool UsingBootProtocol; /**< Indicates that the interface is currently initialized in Boot Protocol mode */
+ uint16_t HIDReportSize; /**< Size in bytes of the HID report descriptor in the device. */
+
+ uint8_t LargestReportSize; /**< Largest report the device will send, in bytes. */
+ } State; /**< State data for the USB class interface within the device. All elements in this section
+ * <b>may</b> be set to initial values, but may also be ignored to default to sane values when
+ * the interface is enumerated.
+ */
+ } USB_ClassInfo_HID_Host_t;
+
+ /* Enums: */
+ /** Enum for the possible error codes returned by the \ref HID_Host_ConfigurePipes() function. */
+ enum HID_Host_EnumerationFailure_ErrorCodes_t
+ {
+ HID_ENUMERROR_NoError = 0, /**< Configuration Descriptor was processed successfully. */
+ HID_ENUMERROR_InvalidConfigDescriptor = 1, /**< The device returned an invalid Configuration Descriptor. */
+ HID_ENUMERROR_NoCompatibleInterfaceFound = 2, /**< A compatible HID interface was not found in the device's Configuration Descriptor. */
+ };
+
+ /* Function Prototypes: */
+ /** Host interface configuration routine, to configure a given HID host interface instance using the Configuration
+ * Descriptor read from an attached USB device. This function automatically updates the given HID Host instance's
+ * state values and configures the pipes required to communicate with the interface if it is found within the
+ * device. This should be called once after the stack has enumerated the attached device, while the host state
+ * machine is in the Addressed state.
+ *
+ * \note The pipe index numbers as given in the interface's configuration structure must not overlap with any other
+ * interface, or pipe bank corruption will occur. Gaps in the allocated pipe numbers or non-sequential indexes
+ * within a single interface is allowed, but no two interfaces of any type have have interleaved pipe indexes.
+ * \n\n
+ *
+ * \note Once the device pipes are configured, the HID device's reporting protocol <b>must</b> be set via a call
+ * to either the \ref HID_Host_SetBootProtocol() or \ref HID_Host_SetReportProtocol() function.
+ *
+ * \param[in,out] HIDInterfaceInfo Pointer to a structure containing a HID Class host configuration and state.
+ * \param[in] ConfigDescriptorSize Length of the attached device's Configuration Descriptor.
+ * \param[in] DeviceConfigDescriptor Pointer to a buffer containing the attached device's Configuration Descriptor.
+ *
+ * \return A value from the \ref HID_Host_EnumerationFailure_ErrorCodes_t enum.
+ */
+ uint8_t HID_Host_ConfigurePipes(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo,
+ uint16_t ConfigDescriptorSize,
+ void* DeviceConfigDescriptor) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(3);
+
+
+ /** Receives a HID IN report from the attached HID device, when a report has been received on the HID IN Data pipe.
+ *
+ * \pre This function must only be called when the Host state machine is in the \ref HOST_STATE_Configured state or the
+ * call will fail.
+ *
+ * \note The destination buffer should be large enough to accommodate the largest report that the attached device
+ * can generate.
+ *
+ * \param[in,out] HIDInterfaceInfo Pointer to a structure containing a HID Class host configuration and state.
+ * \param[in] Buffer Buffer to store the received report into.
+ *
+ * \return An error code from the \ref Pipe_Stream_RW_ErrorCodes_t enum.
+ */
+ uint8_t HID_Host_ReceiveReport(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo,
+ void* Buffer) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
+
+ #if !defined(HID_HOST_BOOT_PROTOCOL_ONLY)
+ /** Receives a HID IN report from the attached device, by the report ID.
+ *
+ * \pre This function must only be called when the Host state machine is in the \ref HOST_STATE_Configured state or the
+ * call will fail.
+ *
+ * \note When the HID_HOST_BOOT_PROTOCOL_ONLY compile time token is defined, this method is unavailable.
+ *
+ * \param[in,out] HIDInterfaceInfo Pointer to a structure containing a HID Class host configuration and state.
+ * \param[in] ReportID Report ID of the received report if ControlRequest is false, set by the to the Report ID to fetch.
+ * \param[in] Buffer Buffer to store the received report into.
+ *
+ * \return A value from the \ref USB_Host_SendControlErrorCodes_t enum.
+ */
+ uint8_t HID_Host_ReceiveReportByID(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo,
+ const uint8_t ReportID,
+ void* Buffer) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(3);
+ #endif
+
+ /** Sends an OUT or FEATURE report to the currently attached HID device, using the device's OUT pipe if available,
+ * or the device's Control pipe if not.
+ *
+ * \pre This function must only be called when the Host state machine is in the \ref HOST_STATE_Configured state or the
+ * call will fail.
+ *
+ * \note When the HID_HOST_BOOT_PROTOCOL_ONLY compile time token is defined, the ReportID parameter is removed
+ * from the parameter list of this function.
+ *
+ * \param[in,out] HIDInterfaceInfo Pointer to a structure containing a HID Class host configuration and state.
+ * \param[in] ReportID Report ID of the report to send to the device, or 0 if the device does not use report IDs.
+ * \param[in] ReportType Type of report to issue to the device, either \ref HID_REPORT_ITEM_Out or \ref HID_REPORT_ITEM_Feature.
+ * \param[in] Buffer Buffer containing the report to send to the attached device.
+ * \param[in] ReportSize Report size in bytes to send to the attached device.
+ *
+ * \return An error code from the \ref USB_Host_SendControlErrorCodes_t enum if the DeviceUsesOUTPipe flag is set in
+ * the interface's state structure, a value from the \ref Pipe_Stream_RW_ErrorCodes_t enum otherwise.
+ */
+ uint8_t HID_Host_SendReportByID(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo,
+ #if !defined(HID_HOST_BOOT_PROTOCOL_ONLY)
+ const uint8_t ReportID,
+ #endif
+ const uint8_t ReportType,
+ void* Buffer,
+ const uint16_t ReportSize) ATTR_NON_NULL_PTR_ARG(1)
+ #if !defined(HID_HOST_BOOT_PROTOCOL_ONLY)
+ ATTR_NON_NULL_PTR_ARG(4);
+ #else
+ ATTR_NON_NULL_PTR_ARG(3);
+ #endif
+
+ /** Determines if a HID IN report has been received from the attached device on the data IN pipe.
+ *
+ * \pre This function must only be called when the Host state machine is in the \ref HOST_STATE_Configured state or the
+ * call will fail.
+ *
+ * \param[in,out] HIDInterfaceInfo Pointer to a structure containing a HID Class host configuration and state.
+ *
+ * \return Boolean true if a report has been received, false otherwise.
+ */
+ bool HID_Host_IsReportReceived(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
+
+ /** Switches the attached HID device's reporting protocol over to the Boot Report protocol mode, on supported devices.
+ *
+ * \note When the HID_HOST_BOOT_PROTOCOL_ONLY compile time token is defined, this method must still be called
+ * to explicitly place the attached device into boot protocol mode before use.
+ *
+ * \param[in,out] HIDInterfaceInfo Pointer to a structure containing a HID Class host configuration and state.
+ *
+ * \return \ref HID_ERROR_LOGICAL if the device does not support Boot Protocol mode, a value from the
+ * \ref USB_Host_SendControlErrorCodes_t enum otherwise.
+ */
+ uint8_t HID_Host_SetBootProtocol(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
+
+ #if !defined(HID_HOST_BOOT_PROTOCOL_ONLY)
+ /** Switches the attached HID device's reporting protocol over to the standard Report protocol mode. This also retrieves
+ * and parses the device's HID report descriptor, so that the size of each report can be determined in advance.
+ *
+ * \note Whether this function is used or not, the \ref CALLBACK_HIDParser_FilterHIDReportItem() callback from the HID
+ * Report Parser this function references <b>must</b> be implemented in the user code.
+ * \n\n
+ *
+ * \note When the HID_HOST_BOOT_PROTOCOL_ONLY compile time token is defined, this method is unavailable.
+ *
+ * \param[in,out] HIDInterfaceInfo Pointer to a structure containing a HID Class host configuration and state.
+ *
+ * \return A value from the \ref USB_Host_SendControlErrorCodes_t enum if an error occurs while retrieving the HID
+ * Report descriptor or the setting of the Report protocol, \ref HID_ERROR_LOGICAL if the HID interface does
+ * not have a valid \ref HID_ReportInfo_t structure set in its configuration, a mask of \ref HID_ERROR_LOGICAL
+ * and a value from the \ref HID_Parse_ErrorCodes_t otherwise.
+ */
+ uint8_t HID_Host_SetReportProtocol(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
+ #endif
+
+ /* Inline Functions: */
+ /** General management task for a given Human Interface Class host class interface, required for the correct operation of
+ * the interface. This should be called frequently in the main program loop, before the master USB management task
+ * \ref USB_USBTask().
+ *
+ * \param[in,out] HIDInterfaceInfo Pointer to a structure containing a HID Class host configuration and state.
+ */
+ static inline void HID_Host_USBTask(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo);
+ static inline void HID_Host_USBTask(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo)
+ {
+ (void)HIDInterfaceInfo;
+ }
+
+ /* Private Interface - For use in library only: */
+ #if !defined(__DOXYGEN__)
+ /* Function Prototypes: */
+ #if defined(__INCLUDE_FROM_HID_HOST_C)
+ static uint8_t DCOMP_HID_Host_NextHIDInterface(void* const CurrentDescriptor) ATTR_NON_NULL_PTR_ARG(1);
+ static uint8_t DCOMP_HID_Host_NextHID(void* const CurrentDescriptor) ATTR_NON_NULL_PTR_ARG(1);
+ static uint8_t DCOMP_HID_Host_NextHIDInterfaceEndpoint(void* const CurrentDescriptor) ATTR_NON_NULL_PTR_ARG(1);
+ #endif
+ #endif
+
+ /* Disable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ }
+ #endif
+
+#endif
+
+/** @} */
+
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