X-Git-Url: http://git.linex4red.de/pub/lufa.git/blobdiff_plain/e338cb6f329d6bf948abad88637f81436ee90daf..f896c00c48f04fb9273555ab8d9b1af99f865d25:/Projects/MissleLauncher/ConfigDescriptor.c?ds=sidebyside diff --git a/Projects/MissleLauncher/ConfigDescriptor.c b/Projects/MissleLauncher/ConfigDescriptor.c deleted file mode 100644 index 29fa60ba3..000000000 --- a/Projects/MissleLauncher/ConfigDescriptor.c +++ /dev/null @@ -1,174 +0,0 @@ -/* - LUFA Library - Copyright (C) Dean Camera, 2009. - - dean [at] fourwalledcubicle [dot] com - www.fourwalledcubicle.com -*/ - -/* - Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com) - - Permission to use, copy, modify, and distribute this software - and its documentation for any purpose and without fee is hereby - granted, 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 - * - * USB Device Configuration Descriptor processing routines, to determine the correct pipe configurations - * needed to communication with an attached USB device. Descriptors are special computer-readable structures - * which the host requests upon device enumeration, to determine the device's capabilities and functions. - */ - -#include "ConfigDescriptor.h" - -/** Reads and processes an attached device's descriptors, to determine compatibility and pipe configurations. This - * routine will read in the entire configuration descriptor, and configure the hosts pipes to correctly communicate - * with compatible devices. - * - * This routine searches for a HID interface descriptor containing at least one Interrupt type IN endpoint. - * - * \return An error code from the GenericHIDHost_GetConfigDescriptorDataCodes_t enum. - */ -uint8_t ProcessConfigurationDescriptor(void) -{ - uint8_t* ConfigDescriptorData; - uint16_t ConfigDescriptorSize; - - uint8_t FoundEndpoints = 0; - - /* Get Configuration Descriptor size from the device */ - if (USB_GetDeviceConfigDescriptor(&ConfigDescriptorSize, NULL) != HOST_SENDCONTROL_Successful) - return ControlError; - - /* Ensure that the Configuration Descriptor isn't too large */ - if (ConfigDescriptorSize > MAX_CONFIG_DESCRIPTOR_SIZE) - return DescriptorTooLarge; - - /* Allocate enough memory for the entire config descriptor */ - ConfigDescriptorData = alloca(ConfigDescriptorSize); - - /* Retrieve the entire configuration descriptor into the allocated buffer */ - USB_GetDeviceConfigDescriptor(&ConfigDescriptorSize, ConfigDescriptorData); - - /* Validate returned data - ensure first entry is a configuration header descriptor */ - if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration) - return InvalidConfigDataReturned; - - /* Get the HID interface from the configuration descriptor */ - if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData, - DComp_NextHIDInterface) != DESCRIPTOR_SEARCH_COMP_Found) - { - /* Descriptor not found, error out */ - return NoHIDInterfaceFound; - } - - while (FoundEndpoints != ((1 << HID_DATA_IN_PIPE) | (1 << HID_DATA_OUT_PIPE))) - { - /* Get the next HID interface's data endpoint descriptor */ - if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData, - DComp_NextInterfaceHIDDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found) - { - /* Not all HID devices have an OUT endpoint - if we've reached the end of the HID descriptor - * but only found the mandatory IN endpoint, it's safe to continue with the device enumeration */ - if (FoundEndpoints == (1 << HID_DATA_IN_PIPE)) - break; - - /* Descriptor not found, error out */ - return NoEndpointFound; - } - - /* Retrieve the endpoint address from the endpoint descriptor */ - USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t); - - /* If the endpoint is a IN type endpoint */ - if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN) - { - /* Configure the HID data IN pipe */ - Pipe_ConfigurePipe(HID_DATA_IN_PIPE, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN, - EndpointData->EndpointAddress, EndpointData->EndpointSize, PIPE_BANK_SINGLE); - - Pipe_SetInfiniteINRequests(); - - FoundEndpoints |= (1 << HID_DATA_IN_PIPE); - } - else - { - /* Configure the HID data OUT pipe */ - Pipe_ConfigurePipe(HID_DATA_OUT_PIPE, EP_TYPE_INTERRUPT, PIPE_TOKEN_OUT, - EndpointData->EndpointAddress, EndpointData->EndpointSize, PIPE_BANK_SINGLE); - - FoundEndpoints |= (1 << HID_DATA_OUT_PIPE); - } - } - - /* Valid data found, return success */ - return SuccessfulConfigRead; -} - -/** Descriptor comparator function. This comparator function is can be called while processing an attached USB device's - * configuration descriptor, to search for a specific sub descriptor. It can also be used to abort the configuration - * descriptor processing if an incompatible descriptor configuration is found. - * - * This comparator searches for the next Interface descriptor of the correct HID Class value. - * - * \return A value from the DSEARCH_Return_ErrorCodes_t enum - */ -uint8_t DComp_NextHIDInterface(void* CurrentDescriptor) -{ - /* Determine if the current descriptor is an interface descriptor */ - if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface) - { - /* Check the HID descriptor class and protocol, break out if correct class/protocol interface found */ - if (DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).Class == HID_CLASS) - { - /* Indicate that the descriptor being searched for has been found */ - return DESCRIPTOR_SEARCH_Found; - } - } - - /* Current descriptor does not match what this comparator is looking for */ - return DESCRIPTOR_SEARCH_NotFound; -} - -/** Descriptor comparator function. This comparator function is can be called while processing an attached USB device's - * configuration descriptor, to search for a specific sub descriptor. It can also be used to abort the configuration - * descriptor processing if an incompatible descriptor configuration is found. - * - * This comparator searches for the next Endpoint descriptor inside the current interface descriptor, - * aborting the search if another interface descriptor is found before the required endpoint. - * - * \return A value from the DSEARCH_Return_ErrorCodes_t enum - */ -uint8_t DComp_NextInterfaceHIDDataEndpoint(void* CurrentDescriptor) -{ - /* Determine the type of the current descriptor */ - if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Endpoint) - { - /* Indicate that the descriptor being searched for has been found */ - return DESCRIPTOR_SEARCH_Found; - } - else if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface) - { - /* Indicate that the search has failed prematurely and should be aborted */ - return DESCRIPTOR_SEARCH_Fail; - } - - /* Current descriptor does not match what this comparator is looking for */ - return DESCRIPTOR_SEARCH_NotFound; -}