X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/1daa5e16f9a395fb2943906a715adb35b8106988..d881e0cbf691793ab6e5fe24f091549a007e009a:/LUFA/Drivers/USB/Core/HostStandardReq.h diff --git a/LUFA/Drivers/USB/Core/HostStandardReq.h b/LUFA/Drivers/USB/Core/HostStandardReq.h index 46822221c..4bc3ddad2 100644 --- a/LUFA/Drivers/USB/Core/HostStandardReq.h +++ b/LUFA/Drivers/USB/Core/HostStandardReq.h @@ -58,6 +58,18 @@ #endif /* Public Interface - May be used in end-application: */ + /* Macros: */ + #if !defined(USB_HOST_TIMEOUT_MS) || defined(__DOXYGEN__) + /** Constant for the maximum software timeout period of sent USB control transactions to an attached + * device. If a device fails to respond to a sent control request within this period, the + * library will return a timeout error code. + * + * This value may be overridden in the user project makefile as the value of the + * \ref USB_HOST_TIMEOUT_MS token, and passed to the compiler using the -D switch. + */ + #define USB_HOST_TIMEOUT_MS 1000 + #endif + /* Enums: */ /** Enum for the \ref USB_Host_SendControlRequest() return code, indicating the reason for the error * if the transfer of the request is unsuccessful. @@ -77,6 +89,19 @@ HOST_SENDCONTROL_SoftwareTimeOut = 4, /**< The request or data transfer timed out. */ }; + /* Global Variables: */ + /** Indicates the currently set configuration number of the attached device. This indicates the currently + * selected configuration value if one has been set sucessfully, or 0 if no configuration has been selected. + * + * To set a device configuration, call the \ref USB_Host_SetDeviceConfiguration() function. + * + * \note This variable should be treated as read-only in the user application, and never manually + * changed in value. + * + * \ingroup Group_Host + */ + extern uint8_t USB_Host_ConfigurationNumber; + /* Function Prototypes: */ /** Sends the request stored in the \ref USB_ControlRequest global structure to the attached device, * and transfers the data stored in the buffer to the device, or from the device to the buffer @@ -91,6 +116,96 @@ */ uint8_t USB_Host_SendControlRequest(void* const BufferPtr); + /** Sends a SET CONFIGURATION standard request to the attached device, with the given configuration index. + * + * This routine will automatically update the \ref USB_HostState and \ref USB_Host_ConfigurationNumber + * state variables according to the given function parameters and the result of the request. + * + * \note After this routine returns, the control pipe will be selected. + * + * \ingroup Group_PipeControlReq + * + * \param[in] ConfigNumber Configuration index to send to the device. + * + * \return A value from the \ref USB_Host_SendControlErrorCodes_t enum to indicate the result. + */ + uint8_t USB_Host_SetDeviceConfiguration(const uint8_t ConfigNumber); + + /** Sends a GET DESCRIPTOR standard request to the attached device, requesting the device descriptor. + * This can be used to easily retrieve information about the device such as its VID, PID and power + * requirements. + * + * \note After this routine returns, the control pipe will be selected. + * + * \ingroup Group_PipeControlReq + * + * \param[out] DeviceDescriptorPtr Pointer to the destination device descriptor structure where + * the read data is to be stored. + * + * \return A value from the \ref USB_Host_SendControlErrorCodes_t enum to indicate the result. + */ + uint8_t USB_Host_GetDeviceDescriptor(void* const DeviceDescriptorPtr) ATTR_NON_NULL_PTR_ARG(1); + + /** Sends a GET DESCRIPTOR standard request to the attached device, requesting the string descriptor + * of the specified index. This can be used to easily retrieve string descriptors from the device by + * index, after the index is obtained from the Device or Configuration descriptors. + * + * \note After this routine returns, the control pipe will be selected. + * + * \ingroup Group_PipeControlReq + * + * \param[in] Index Index of the string index to retrieve. + * \param[out] Buffer Pointer to the destination buffer where the retrieved string descriptor is + * to be stored. + * \param[in] BufferLength Maximum size of the string descriptor which can be stored into the buffer. + * + * \return A value from the \ref USB_Host_SendControlErrorCodes_t enum to indicate the result. + */ + uint8_t USB_Host_GetDeviceStringDescriptor(const uint8_t Index, + void* const Buffer, + const uint8_t BufferLength) ATTR_NON_NULL_PTR_ARG(2); + + /** Retrieves the current feature status of the attached device, via a GET STATUS standard request. The + * retrieved feature status can then be examined by masking the retrieved value with the various + * FEATURE_* masks for bus/self power information and remote wakeup support. + * + * \note After this routine returns, the control pipe will be selected. + * + * \ingroup Group_PipeControlReq + * + * \param[out] FeatureStatus Location where the retrieved feature status should be stored. + * + * \return A value from the \ref USB_Host_SendControlErrorCodes_t enum to indicate the result. + */ + uint8_t USB_Host_GetDeviceStatus(uint8_t* const FeatureStatus) ATTR_NON_NULL_PTR_ARG(1); + + /** Clears a stall condition on the given pipe, via a CLEAR FEATURE standard request to the attached device. + * + * \note After this routine returns, the control pipe will be selected. + * + * \ingroup Group_PipeControlReq + * + * \param[in] EndpointAddress Address of the endpoint to clear, including the endpoint's direction. + * + * \return A value from the \ref USB_Host_SendControlErrorCodes_t enum to indicate the result. + */ + uint8_t USB_Host_ClearEndpointStall(const uint8_t EndpointAddress); + + /** Selects a given alternative setting for the specified interface, via a SET INTERFACE standard request to + * the attached device. + * + * \note After this routine returns, the control pipe will be selected. + * + * \ingroup Group_PipeControlReq + * + * \param[in] InterfaceIndex Index of the interface whose alternative setting is to be altered. + * \param[in] AltSetting Index of the interface's alternative setting which is to be selected. + * + * \return A value from the \ref USB_Host_SendControlErrorCodes_t enum to indicate the result. + */ + uint8_t USB_Host_SetInterfaceAltSetting(const uint8_t InterfaceIndex, + const uint8_t AltSetting); + /* Private Interface - For use in library only: */ #if !defined(__DOXYGEN__) /* Enums: */