From 071e02c6b6b4837fa9cf0b6d4c749994e02638d7 Mon Sep 17 00:00:00 2001 From: Dean Camera Date: Sat, 8 May 2010 03:12:14 +0000 Subject: Add svn:eol-style property to source files, so that the line endings are correctly converted to the target system's native end of line style. --- Demos/Host/LowLevel/PrinterHost/ConfigDescriptor.c | 338 ++++++++++----------- 1 file changed, 169 insertions(+), 169 deletions(-) (limited to 'Demos/Host/LowLevel/PrinterHost/ConfigDescriptor.c') diff --git a/Demos/Host/LowLevel/PrinterHost/ConfigDescriptor.c b/Demos/Host/LowLevel/PrinterHost/ConfigDescriptor.c index f7fe2518b..1e0f1be74 100644 --- a/Demos/Host/LowLevel/PrinterHost/ConfigDescriptor.c +++ b/Demos/Host/LowLevel/PrinterHost/ConfigDescriptor.c @@ -1,169 +1,169 @@ -/* - LUFA Library - Copyright (C) Dean Camera, 2010. - - dean [at] fourwalledcubicle [dot] com - www.fourwalledcubicle.com -*/ - -/* - 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. -*/ - -#include "ConfigDescriptor.h" - -/** Interface number for the bidirectional Printer interface found within the device. */ -uint8_t PrinterInterfaceNumber; - -/** Interface Alternate Setting number for the bidirectional Printer interface found within the device. */ -uint8_t PrinterAltSetting; - -/** 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 bidirectional Printer interface descriptor containing bulk IN and OUT data endpoints. - * - * \return An error code from the \ref PrinterHost_GetConfigDescriptorDataCodes_t enum. - */ -uint8_t ProcessConfigurationDescriptor(void) -{ - uint8_t ConfigDescriptorData[512]; - void* CurrConfigLocation = ConfigDescriptorData; - uint16_t CurrConfigBytesRem; - uint8_t FoundEndpoints = 0; - - /* Retrieve the entire configuration descriptor into the allocated buffer */ - switch (USB_Host_GetDeviceConfigDescriptor(1, &CurrConfigBytesRem, ConfigDescriptorData, sizeof(ConfigDescriptorData))) - { - case HOST_GETCONFIG_Successful: - break; - case HOST_GETCONFIG_InvalidData: - return InvalidConfigDataReturned; - case HOST_GETCONFIG_BuffOverflow: - return DescriptorTooLarge; - default: - return ControlError; - } - - /* Get the printer interface from the configuration descriptor */ - if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation, DComp_NextBidirectionalPrinterInterface)) - { - /* Descriptor not found, error out */ - return NoInterfaceFound; - } - - PrinterInterfaceNumber = DESCRIPTOR_CAST(CurrConfigLocation, USB_Descriptor_Interface_t).InterfaceNumber; - PrinterAltSetting = DESCRIPTOR_CAST(CurrConfigLocation, USB_Descriptor_Interface_t).AlternateSetting; - - /* Get the IN and OUT data endpoints for the printer interface */ - while (FoundEndpoints != ((1 << PRINTER_DATA_OUT_PIPE) | (1 << PRINTER_DATA_IN_PIPE))) - { - /* Fetch the next bulk endpoint from the current printer interface */ - if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation, DComp_NextPrinterInterfaceBulkDataEndpoint)) - { - /* Descriptor not found, error out */ - return NoEndpointFound; - } - - USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Endpoint_t); - - /* Check if the endpoint is a bulk IN or bulk OUT endpoint, set appropriate globals */ - if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN) - { - /* Configure the data IN pipe */ - Pipe_ConfigurePipe(PRINTER_DATA_IN_PIPE, EP_TYPE_BULK, PIPE_TOKEN_IN, - EndpointData->EndpointAddress, EndpointData->EndpointSize, - PIPE_BANK_SINGLE); - - Pipe_SetInfiniteINRequests(); - - /* Set the flag indicating that the data IN pipe has been found */ - FoundEndpoints |= (1 << PRINTER_DATA_IN_PIPE); - } - else - { - /* Configure the data OUT pipe */ - Pipe_ConfigurePipe(PRINTER_DATA_OUT_PIPE, EP_TYPE_BULK, PIPE_TOKEN_OUT, - EndpointData->EndpointAddress, EndpointData->EndpointSize, - PIPE_BANK_SINGLE); - - /* Set the flag indicating that the data OUT pipe has been found */ - FoundEndpoints |= (1 << PRINTER_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 Bidirectional Printer Interface descriptor of the current Printer interface, - * aborting the search if the end of the descriptors is found. - * - * \return A value from the DSEARCH_Return_ErrorCodes_t enum - */ -uint8_t DComp_NextBidirectionalPrinterInterface(void* CurrentDescriptor) -{ - if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface) - { - /* Check the descriptor class and protocol, break out if correct class/protocol interface found */ - if ((DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).Class == PRINTER_CLASS) && - (DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).SubClass == PRINTER_SUBCLASS) && - (DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).Protocol == PRINTER_PROTOCOL)) - { - return DESCRIPTOR_SEARCH_Found; - } - } - - 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 Bulk Endpoint descriptor of the current Printer interface, aborting the - * search if another interface descriptor is found before the next endpoint. - * - * \return A value from the DSEARCH_Return_ErrorCodes_t enum - */ -uint8_t DComp_NextPrinterInterfaceBulkDataEndpoint(void* CurrentDescriptor) -{ - if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Endpoint) - { - uint8_t EndpointType = (DESCRIPTOR_CAST(CurrentDescriptor, - USB_Descriptor_Endpoint_t).Attributes & EP_TYPE_MASK); - - /* Check the endpoint type, break out if correct BULK type endpoint found */ - if (EndpointType == EP_TYPE_BULK) - return DESCRIPTOR_SEARCH_Found; - } - else if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface) - { - return DESCRIPTOR_SEARCH_Fail; - } - - return DESCRIPTOR_SEARCH_NotFound; -} +/* + LUFA Library + Copyright (C) Dean Camera, 2010. + + dean [at] fourwalledcubicle [dot] com + www.fourwalledcubicle.com +*/ + +/* + 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. +*/ + +#include "ConfigDescriptor.h" + +/** Interface number for the bidirectional Printer interface found within the device. */ +uint8_t PrinterInterfaceNumber; + +/** Interface Alternate Setting number for the bidirectional Printer interface found within the device. */ +uint8_t PrinterAltSetting; + +/** 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 bidirectional Printer interface descriptor containing bulk IN and OUT data endpoints. + * + * \return An error code from the \ref PrinterHost_GetConfigDescriptorDataCodes_t enum. + */ +uint8_t ProcessConfigurationDescriptor(void) +{ + uint8_t ConfigDescriptorData[512]; + void* CurrConfigLocation = ConfigDescriptorData; + uint16_t CurrConfigBytesRem; + uint8_t FoundEndpoints = 0; + + /* Retrieve the entire configuration descriptor into the allocated buffer */ + switch (USB_Host_GetDeviceConfigDescriptor(1, &CurrConfigBytesRem, ConfigDescriptorData, sizeof(ConfigDescriptorData))) + { + case HOST_GETCONFIG_Successful: + break; + case HOST_GETCONFIG_InvalidData: + return InvalidConfigDataReturned; + case HOST_GETCONFIG_BuffOverflow: + return DescriptorTooLarge; + default: + return ControlError; + } + + /* Get the printer interface from the configuration descriptor */ + if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation, DComp_NextBidirectionalPrinterInterface)) + { + /* Descriptor not found, error out */ + return NoInterfaceFound; + } + + PrinterInterfaceNumber = DESCRIPTOR_CAST(CurrConfigLocation, USB_Descriptor_Interface_t).InterfaceNumber; + PrinterAltSetting = DESCRIPTOR_CAST(CurrConfigLocation, USB_Descriptor_Interface_t).AlternateSetting; + + /* Get the IN and OUT data endpoints for the printer interface */ + while (FoundEndpoints != ((1 << PRINTER_DATA_OUT_PIPE) | (1 << PRINTER_DATA_IN_PIPE))) + { + /* Fetch the next bulk endpoint from the current printer interface */ + if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation, DComp_NextPrinterInterfaceBulkDataEndpoint)) + { + /* Descriptor not found, error out */ + return NoEndpointFound; + } + + USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Endpoint_t); + + /* Check if the endpoint is a bulk IN or bulk OUT endpoint, set appropriate globals */ + if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN) + { + /* Configure the data IN pipe */ + Pipe_ConfigurePipe(PRINTER_DATA_IN_PIPE, EP_TYPE_BULK, PIPE_TOKEN_IN, + EndpointData->EndpointAddress, EndpointData->EndpointSize, + PIPE_BANK_SINGLE); + + Pipe_SetInfiniteINRequests(); + + /* Set the flag indicating that the data IN pipe has been found */ + FoundEndpoints |= (1 << PRINTER_DATA_IN_PIPE); + } + else + { + /* Configure the data OUT pipe */ + Pipe_ConfigurePipe(PRINTER_DATA_OUT_PIPE, EP_TYPE_BULK, PIPE_TOKEN_OUT, + EndpointData->EndpointAddress, EndpointData->EndpointSize, + PIPE_BANK_SINGLE); + + /* Set the flag indicating that the data OUT pipe has been found */ + FoundEndpoints |= (1 << PRINTER_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 Bidirectional Printer Interface descriptor of the current Printer interface, + * aborting the search if the end of the descriptors is found. + * + * \return A value from the DSEARCH_Return_ErrorCodes_t enum + */ +uint8_t DComp_NextBidirectionalPrinterInterface(void* CurrentDescriptor) +{ + if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface) + { + /* Check the descriptor class and protocol, break out if correct class/protocol interface found */ + if ((DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).Class == PRINTER_CLASS) && + (DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).SubClass == PRINTER_SUBCLASS) && + (DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).Protocol == PRINTER_PROTOCOL)) + { + return DESCRIPTOR_SEARCH_Found; + } + } + + 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 Bulk Endpoint descriptor of the current Printer interface, aborting the + * search if another interface descriptor is found before the next endpoint. + * + * \return A value from the DSEARCH_Return_ErrorCodes_t enum + */ +uint8_t DComp_NextPrinterInterfaceBulkDataEndpoint(void* CurrentDescriptor) +{ + if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Endpoint) + { + uint8_t EndpointType = (DESCRIPTOR_CAST(CurrentDescriptor, + USB_Descriptor_Endpoint_t).Attributes & EP_TYPE_MASK); + + /* Check the endpoint type, break out if correct BULK type endpoint found */ + if (EndpointType == EP_TYPE_BULK) + return DESCRIPTOR_SEARCH_Found; + } + else if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface) + { + return DESCRIPTOR_SEARCH_Fail; + } + + return DESCRIPTOR_SEARCH_NotFound; +} -- cgit v1.2.3