diff options
author | Dean Camera <[email protected]> | 2011-06-16 12:18:46 +0000 |
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committer | Dean Camera <[email protected]> | 2011-06-16 12:18:46 +0000 |
commit | 0ec2b55a7c9bc616ad8c78e75410dd27bae1b8b6 (patch) | |
tree | 9cedb98961db197886f63ab0d56ca97ff1243bd2 /Demos/Host/Incomplete/AndroidAccessoryHost/ConfigDescriptor.c | |
parent | f10126a95e528a04b4ec6be1d0fc30be4fbb7e98 (diff) | |
download | qmk_firmware-0ec2b55a7c9bc616ad8c78e75410dd27bae1b8b6.tar.gz qmk_firmware-0ec2b55a7c9bc616ad8c78e75410dd27bae1b8b6.zip |
Add missing SVN eol-style properties to source files to prevent mixed end-of-line characters.
Diffstat (limited to 'Demos/Host/Incomplete/AndroidAccessoryHost/ConfigDescriptor.c')
-rw-r--r-- | Demos/Host/Incomplete/AndroidAccessoryHost/ConfigDescriptor.c | 276 |
1 files changed, 138 insertions, 138 deletions
diff --git a/Demos/Host/Incomplete/AndroidAccessoryHost/ConfigDescriptor.c b/Demos/Host/Incomplete/AndroidAccessoryHost/ConfigDescriptor.c index 72a1be0a9c..664e065ad0 100644 --- a/Demos/Host/Incomplete/AndroidAccessoryHost/ConfigDescriptor.c +++ b/Demos/Host/Incomplete/AndroidAccessoryHost/ConfigDescriptor.c @@ -1,138 +1,138 @@ -/*
- LUFA Library
- Copyright (C) Dean Camera, 2011.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2011 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
- *
- * 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 the first interface containing bulk IN and OUT data endpoints.
- *
- * \return An error code from the \ref AndroidHost_GetConfigDescriptorDataCodes_t enum.
- */
-uint8_t ProcessConfigurationDescriptor(void)
-{
- uint8_t ConfigDescriptorData[512];
- void* CurrConfigLocation = ConfigDescriptorData;
- uint16_t CurrConfigBytesRem;
-
- USB_Descriptor_Endpoint_t* DataINEndpoint = NULL;
- USB_Descriptor_Endpoint_t* DataOUTEndpoint = NULL;
-
- /* 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 DevControlError;
- }
-
- /* The Android Accessory Mode specification mandates that the accessory communications endpoints
- be in the first interface descriptor (interface 0) */
- USB_GetNextDescriptorOfType(&CurrConfigBytesRem, &CurrConfigLocation, DTYPE_Interface);
-
- /* Ensure that an interface was found, and the end of the descriptor was not reached */
- if (!(CurrConfigBytesRem))
- return NoCompatibleInterfaceFound;
-
- while (!(DataINEndpoint) || !(DataOUTEndpoint))
- {
- /* Get the next Still Image interface's data endpoint descriptor */
- if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
- DCOMP_NextInterfaceBulkEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
- {
- /* Data endpoints not found within the first Android Accessory device interface, error out */
- return NoCompatibleInterfaceFound;
- }
-
- /* Retrieve the endpoint address from the endpoint descriptor */
- USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Endpoint_t);
-
- /* If the endpoint is a IN type endpoint */
- if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
- DataINEndpoint = EndpointData;
- else
- DataOUTEndpoint = EndpointData;
- }
-
- /* Configure the Android Accessory data IN pipe */
- Pipe_ConfigurePipe(ANDROID_DATA_IN_PIPE, EP_TYPE_BULK, PIPE_TOKEN_IN,
- DataINEndpoint->EndpointAddress, DataINEndpoint->EndpointSize, PIPE_BANK_SINGLE);
-
- /* Configure the Android Accessory data OUT pipe */
- Pipe_ConfigurePipe(ANDROID_DATA_OUT_PIPE, EP_TYPE_BULK, PIPE_TOKEN_OUT,
- DataOUTEndpoint->EndpointAddress, DataOUTEndpoint->EndpointSize, PIPE_BANK_SINGLE);
-
- /* 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 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_NextInterfaceBulkEndpoint(void* const CurrentDescriptor)
-{
- USB_Descriptor_Header_t* Header = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Header_t);
-
- if (Header->Type == DTYPE_Endpoint)
- {
- USB_Descriptor_Endpoint_t* Endpoint = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Endpoint_t);
-
- uint8_t EndpointType = (Endpoint->Attributes & EP_TYPE_MASK);
- if ((EndpointType == EP_TYPE_BULK) && (!(Pipe_IsEndpointBound(Endpoint->EndpointAddress))))
- return DESCRIPTOR_SEARCH_Found;
- }
- else if (Header->Type == DTYPE_Interface)
- {
- return DESCRIPTOR_SEARCH_Fail;
- }
-
- return DESCRIPTOR_SEARCH_NotFound;
-}
-
+/* + LUFA Library + Copyright (C) Dean Camera, 2011. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2011 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 + * + * 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 the first interface containing bulk IN and OUT data endpoints. + * + * \return An error code from the \ref AndroidHost_GetConfigDescriptorDataCodes_t enum. + */ +uint8_t ProcessConfigurationDescriptor(void) +{ + uint8_t ConfigDescriptorData[512]; + void* CurrConfigLocation = ConfigDescriptorData; + uint16_t CurrConfigBytesRem; + + USB_Descriptor_Endpoint_t* DataINEndpoint = NULL; + USB_Descriptor_Endpoint_t* DataOUTEndpoint = NULL; + + /* 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 DevControlError; + } + + /* The Android Accessory Mode specification mandates that the accessory communications endpoints + be in the first interface descriptor (interface 0) */ + USB_GetNextDescriptorOfType(&CurrConfigBytesRem, &CurrConfigLocation, DTYPE_Interface); + + /* Ensure that an interface was found, and the end of the descriptor was not reached */ + if (!(CurrConfigBytesRem)) + return NoCompatibleInterfaceFound; + + while (!(DataINEndpoint) || !(DataOUTEndpoint)) + { + /* Get the next Still Image interface's data endpoint descriptor */ + if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation, + DCOMP_NextInterfaceBulkEndpoint) != DESCRIPTOR_SEARCH_COMP_Found) + { + /* Data endpoints not found within the first Android Accessory device interface, error out */ + return NoCompatibleInterfaceFound; + } + + /* Retrieve the endpoint address from the endpoint descriptor */ + USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Endpoint_t); + + /* If the endpoint is a IN type endpoint */ + if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN) + DataINEndpoint = EndpointData; + else + DataOUTEndpoint = EndpointData; + } + + /* Configure the Android Accessory data IN pipe */ + Pipe_ConfigurePipe(ANDROID_DATA_IN_PIPE, EP_TYPE_BULK, PIPE_TOKEN_IN, + DataINEndpoint->EndpointAddress, DataINEndpoint->EndpointSize, PIPE_BANK_SINGLE); + + /* Configure the Android Accessory data OUT pipe */ + Pipe_ConfigurePipe(ANDROID_DATA_OUT_PIPE, EP_TYPE_BULK, PIPE_TOKEN_OUT, + DataOUTEndpoint->EndpointAddress, DataOUTEndpoint->EndpointSize, PIPE_BANK_SINGLE); + + /* 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 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_NextInterfaceBulkEndpoint(void* const CurrentDescriptor) +{ + USB_Descriptor_Header_t* Header = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Header_t); + + if (Header->Type == DTYPE_Endpoint) + { + USB_Descriptor_Endpoint_t* Endpoint = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Endpoint_t); + + uint8_t EndpointType = (Endpoint->Attributes & EP_TYPE_MASK); + if ((EndpointType == EP_TYPE_BULK) && (!(Pipe_IsEndpointBound(Endpoint->EndpointAddress)))) + return DESCRIPTOR_SEARCH_Found; + } + else if (Header->Type == DTYPE_Interface) + { + return DESCRIPTOR_SEARCH_Fail; + } + + return DESCRIPTOR_SEARCH_NotFound; +} + |