X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/6a7c298c0f7119e44e18de15d714cd8b938e3bef..e57e08c67237cf73d28afac7f672ec1e74ec308d:/LUFA/Drivers/USB/Class/Device/HID.h diff --git a/LUFA/Drivers/USB/Class/Device/HID.h b/LUFA/Drivers/USB/Class/Device/HID.h index f863f811d..a3e3b8584 100644 --- a/LUFA/Drivers/USB/Class/Device/HID.h +++ b/LUFA/Drivers/USB/Class/Device/HID.h @@ -28,25 +28,25 @@ this software. */ -/** \ingroup Group_USBDeviceClassDrivers - * @defgroup Group_USBClassHIDDevice HID Device Class Driver - LUFA/Drivers/Class/Device/HID.h +/** \ingroup Group_USBClassHID + * @defgroup Group_USBClassHIDDevice HID Class Device 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/Device/HID.c * * \section Module Description - * Functions, macros, variables, enums and types related to the management of USB HID Class interfaces - * within a USB device. + * Device Mode USB Class driver framework interface, for the HID USB Class driver. * * @{ */ -#ifndef _HID_CLASS_H_ -#define _HID_CLASS_H_ +#ifndef _HID_CLASS_DEVICE_H_ +#define _HID_CLASS_DEVICE_H_ /* Includes: */ #include "../../USB.h" + #include "../Common/HID.h" #include @@ -55,102 +55,111 @@ extern "C" { #endif - /* Macros: */ - /** HID Class Specific Request to get the current HID report from the device. */ - #define REQ_GetReport 0x01 - - /** HID Class Specific Request to get the current device idle count. */ - #define REQ_GetIdle 0x02 - - /** HID Class Specific Request to set the current HID report to the device. */ - #define REQ_SetReport 0x09 - - /** HID Class Specific Request to set the device's idle count. */ - #define REQ_SetIdle 0x0A - - /** HID Class Specific Request to get the current HID report protocol mode. */ - #define REQ_GetProtocol 0x03 - - /** HID Class Specific Request to set the current HID report protocol mode. */ - #define REQ_SetProtocol 0x0B - - /** Descriptor header type value, to indicate a HID class HID descriptor. */ - #define DTYPE_HID 0x21 - - /** Descriptor header type value, to indicate a HID class HID report descriptor. */ - #define DTYPE_Report 0x22 - - /* Type Defines: */ - /** Type define for the HID class specific HID descriptor, to describe the HID device's specifications. Refer to the HID - * specification for details on the structure elements. - */ - typedef struct - { - USB_Descriptor_Header_t Header; - - uint16_t HIDSpec; - uint8_t CountryCode; - - uint8_t TotalReportDescriptors; - - uint8_t HIDReportType; - uint16_t HIDReportLength; - } USB_Descriptor_HID_t; - - /** Type define for the data type used to store HID report descriptor elements. */ - typedef uint8_t USB_Descriptor_HIDReport_Datatype_t; - - /** Class state structure. An instance of this structure should be made for each HID interface - * within the user application, and passed to each of the HID class driver functions as the - * HIDInterfaceInfo parameter. The contents of this structure should be set to their correct - * values when used, or ommitted to force the library to use default values. - * - * Note that for the HID class driver, host-to-device reports are received via HID class requests - * rather than a dedicated endpoint to simplify the driver and its interface. - */ - typedef struct - { - uint8_t InterfaceNumber; /**< Interface number of the HID interface within the device */ - - uint8_t ReportINEndpointNumber; /**< Endpoint number of the HID interface's IN report endpoint */ - uint16_t ReportINEndpointSize; /**< Size in bytes of the HID interface's IN report endpoint */ + /* Public Interface - May be used in end-application: */ + /* Type Defines: */ + /** Class state structure. An instance of this structure should be made for each HID interface + * 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. + * + * \note Due to technical limitations, the HID device class driver does not utilize a seperate OUT + * endpoint for host->device communications. Instead, the host->device data (if any) is sent to + * the device via the control endpoint. + */ + typedef struct + { + const struct + { + uint8_t InterfaceNumber; /**< Interface number of the HID interface within the device */ + + uint8_t ReportINEndpointNumber; /**< Endpoint number of the HID interface's IN report endpoint */ + uint16_t ReportINEndpointSize; /**< Size in bytes of the HID interface's IN report endpoint */ + + void* PrevReportINBuffer; /** Pointer to a buffer where the previously created HID input report can be + * stored by the driver, for comparison purposes to detect report changes that + * must be sent immediately to the host. This should point to a buffer big enough + * to hold the largest HID input report sent from the HID interface. + */ + uint8_t PrevReportINBufferSize; /** Size in bytes of the given input report buffer. This is used to create a + * second buffer of the same size within the driver so that subsequent reports + * can be compared. + */ + } Config; /**< Config data for the USB class interface within the device. All elements in this section + * must be set or the interface will fail to enumerate and operate correctly. + */ + struct + { + bool UsingReportProtocol; /**< Indicates if the HID interface is set to Boot or Report protocol mode */ + uint16_t IdleCount; /**< Report idle period, in mS, set by the host */ + uint16_t IdleMSRemaining; /**< Total number of mS remaining before the idle period elapsed - this should be + * decremented by the user application if non-zero each millisecond */ + } State; /**< State data for the USB class interface within the device. All elements in this section + * are reset to their defaults when the interface is enumerated. + */ + } USB_ClassInfo_HID_Device_t; + + /* Function Prototypes: */ + /** Configures the endpoints of a given HID interface, ready for use. This should be linked to the library + * \ref EVENT_USB_Device_ConfigurationChanged() event so that the endpoints are configured when the configuration + * containing the given HID interface is selected. + * + * \param[in,out] HIDInterfaceInfo Pointer to a structure containing a HID Class configuration and state. + * + * \return Boolean true if the endpoints were sucessfully configured, false otherwise + */ + bool HID_Device_ConfigureEndpoints(USB_ClassInfo_HID_Device_t* HIDInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1); - uint8_t ReportINBufferSize; - - bool UsingReportProtocol; /**< Indicates if the HID interface is set to Boot or Report protocol mode */ - uint16_t IdleCount; /**< Report idle period, in ms, set by the host */ - uint16_t IdleMSRemaining; /**< Total number of ms remaining before the idle period elapses */ - } USB_ClassInfo_HID_t; - - /* Function Prototypes: */ - bool USB_HID_ConfigureEndpoints(USB_ClassInfo_HID_t* HIDInterfaceInfo); - void USB_HID_ProcessControlPacket(USB_ClassInfo_HID_t* HIDInterfaceInfo); - void USB_HID_USBTask(USB_ClassInfo_HID_t* HIDInterfaceInfo); - - /** HID class driver callback for the user creation of a HID input report. This callback may fire in response to either - * HID class control requests from the host, or by the normal HID endpoint polling procedure. Inside this callback the - * user is responsible for the creation of the next HID input report to be sent to the host. - * - * \param HIDInterfaceInfo Pointer to a structure containing a HID Class configuration and state. - * \param ReportID If preset to a non-zero value, this is the report ID being requested by the host. If zero, this should - * be set to the report ID of the generated HID input report. If multiple reports are not sent via the - * given HID interface, this parameter should be ignored. - * \param ReportData Pointer to a buffer where the generated HID report should be stored. - * - * \return Number of bytes in the generated input report, or zero if no report is to be sent - */ - uint16_t CALLBACK_USB_HID_CreateNextHIDReport(USB_ClassInfo_HID_t* HIDInterfaceInfo, uint8_t* ReportID, void* ReportData); - - /** HID class driver callback for the user processing of a received HID input report. This callback may fire in response to - * either HID class control requests from the host, or by the normal HID endpoint polling procedure. Inside this callback - * the user is responsible for the processing of the received HID output report from the host. - * - * \param HIDInterfaceInfo Pointer to a structure containing a HID Class configuration and state. - * \param ReportID Report ID of the received output report. If multiple reports are not received via the given HID - * interface, this parameter should be ignored. - * \param ReportData Pointer to a buffer where the received HID report is stored. - */ - void CALLBACK_USB_HID_ProcessReceivedHIDReport(USB_ClassInfo_HID_t* HIDInterfaceInfo, uint8_t ReportID, void* ReportData, uint16_t ReportSize); + /** Processes incomming control requests from the host, that are directed to the given HID class interface. This should be + * linked to the library \ref EVENT_USB_Device_UnhandledControlRequest() event. + * + * \param[in,out] HIDInterfaceInfo Pointer to a structure containing a HID Class configuration and state. + */ + void HID_Device_ProcessControlRequest(USB_ClassInfo_HID_Device_t* HIDInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1); + + /** General management task for a given HID 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 configuration and state. + */ + void HID_Device_USBTask(USB_ClassInfo_HID_Device_t* HIDInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1); + + /** Indicates that a millisecond of idle time has elapsed on the given HID interface, and the interface's idle count should be + * decremented. This should be called once per millisecond so that hardware key-repeats function correctly. It is recommended + * that this be called by the \ref EVENT_USB_Device_StartOfFrame() event, once SOF events have been enabled via + * \ref USB_Device_EnableSOFEvents();. + * + * \param[in,out] HIDInterfaceInfo Pointer to a structure containing a HID Class configuration and state. + */ + void HID_Device_MillisecondElapsed(USB_ClassInfo_HID_Device_t* HIDInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1); + + /** HID class driver callback for the user creation of a HID IN report. This callback may fire in response to either + * HID class control requests from the host, or by the normal HID endpoint polling procedure. Inside this callback the + * user is responsible for the creation of the next HID input report to be sent to the host. + * + * \param[in,out] HIDInterfaceInfo Pointer to a structure containing a HID Class configuration and state. + * \param[in,out] ReportID If preset to a non-zero value, this is the report ID being requested by the host. If zero, this should + * be set to the report ID of the generated HID input report (if any). If multiple reports are not sent via the + * given HID interface, this parameter should be ignored. + * \param[out] ReportData Pointer to a buffer where the generated HID report should be stored. + * \param[out] ReportSize Number of bytes in the generated input report, or zero if no report is to be sent + * + * \return Boolean true to force the sending of the report even if it is identical to the previous report and still within + * the idle period (useful for devices which report relative movement), false otherwise + */ + bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo, uint8_t* const ReportID, + void* ReportData, uint16_t* ReportSize) ATTR_NON_NULL_PTR_ARG(1, 2, 3, 4); + + /** HID class driver callback for the user processing of a received HID OUT report. This callback may fire in response to + * either HID class control requests from the host, or by the normal HID endpoint polling procedure. Inside this callback + * the user is responsible for the processing of the received HID output report from the host. + * + * \param[in,out] HIDInterfaceInfo Pointer to a structure containing a HID Class configuration and state. + * \param[in] ReportID Report ID of the received output report. If multiple reports are not received via the given HID + * interface, this parameter should be ignored. + * \param[in] ReportData Pointer to a buffer where the received HID report is stored. + * \param[in] ReportSize Size in bytes of the received report from the host. + */ + void CALLBACK_HID_Device_ProcessHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo, const uint8_t ReportID, + const void* ReportData, const uint16_t ReportSize) ATTR_NON_NULL_PTR_ARG(1, 3); /* Disable C linkage for C++ Compilers: */ #if defined(__cplusplus)