diff options
Diffstat (limited to 'Demos/Host/ClassDriver/StillImageHost/ConfigDescriptor.c')
| -rw-r--r-- | Demos/Host/ClassDriver/StillImageHost/ConfigDescriptor.c | 192 |
1 files changed, 0 insertions, 192 deletions
diff --git a/Demos/Host/ClassDriver/StillImageHost/ConfigDescriptor.c b/Demos/Host/ClassDriver/StillImageHost/ConfigDescriptor.c deleted file mode 100644 index 108496964..000000000 --- a/Demos/Host/ClassDriver/StillImageHost/ConfigDescriptor.c +++ /dev/null @@ -1,192 +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 SI interface descriptor containing bulk IN and OUT data endpoints.
- *
- * \return An error code from the StillImageHost_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 Still Image interface from the configuration descriptor */
- if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
- DComp_NextStillImageInterface) != DESCRIPTOR_SEARCH_COMP_Found)
- {
- /* Descriptor not found, error out */
- return NoInterfaceFound;
- }
-
- /* Get the IN and OUT data and event endpoints for the Still Image interface */
- while (FoundEndpoints != ((1 << SIMAGE_EVENTS_PIPE) | (1 << SIMAGE_DATA_IN_PIPE) | (1 << SIMAGE_DATA_OUT_PIPE)))
- {
- /* Fetch the next endpoint from the current Still Image interface */
- if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
- DComp_NextSImageInterfaceDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
- {
- /* Descriptor not found, error out */
- return NoEndpointFound;
- }
-
- USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);
-
- /* Check if the found endpoint is a interrupt or bulk type descriptor */
- if ((EndpointData->Attributes & EP_TYPE_MASK) == EP_TYPE_INTERRUPT)
- {
- /* If the endpoint is a IN type interrupt endpoint */
- if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
- {
- /* Configure the events pipe */
- Pipe_ConfigurePipe(SIMAGE_EVENTS_PIPE, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN,
- EndpointData->EndpointAddress, EndpointData->EndpointSize,
- PIPE_BANK_DOUBLE);
-
- Pipe_SetInfiniteINRequests();
- Pipe_SetInterruptPeriod(EndpointData->PollingIntervalMS);
-
- /* Set the flag indicating that the events pipe has been found */
- FoundEndpoints |= (1 << SIMAGE_EVENTS_PIPE);
- }
- }
- else
- {
- /* Check if the endpoint is a bulk IN or bulk OUT endpoint */
- if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
- {
- /* Configure the data IN pipe */
- Pipe_ConfigurePipe(SIMAGE_DATA_IN_PIPE, EP_TYPE_BULK, PIPE_TOKEN_IN,
- EndpointData->EndpointAddress, EndpointData->EndpointSize,
- PIPE_BANK_DOUBLE);
-
- Pipe_SetInfiniteINRequests();
-
- /* Set the flag indicating that the data IN pipe has been found */
- FoundEndpoints |= (1 << SIMAGE_DATA_IN_PIPE);
- }
- else
- {
- /* Configure the data OUT pipe */
- Pipe_ConfigurePipe(SIMAGE_DATA_OUT_PIPE, EP_TYPE_BULK, PIPE_TOKEN_OUT,
- EndpointData->EndpointAddress, EndpointData->EndpointSize,
- PIPE_BANK_DOUBLE);
-
- /* Set the flag indicating that the data OUT pipe has been found */
- FoundEndpoints |= (1 << SIMAGE_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 Still Image Class, Subclass and Protocol values.
- *
- * \return A value from the DSEARCH_Return_ErrorCodes_t enum
- */
-uint8_t DComp_NextStillImageInterface(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 == SIMAGE_CLASS) &&
- (DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).SubClass == SIMAGE_SUBCLASS) &&
- (DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).Protocol == SIMAGE_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 Interrupt or Bulk Endpoint descriptor of the current SI 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_NextSImageInterfaceDataEndpoint(void* CurrentDescriptor)
-{
- if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Endpoint)
- {
- uint8_t EndpointType = (DESCRIPTOR_CAST(CurrentDescriptor,
- USB_Descriptor_Endpoint_t).Attributes & EP_TYPE_MASK);
-
- if ((EndpointType == EP_TYPE_BULK) || (EndpointType == EP_TYPE_INTERRUPT))
- return DESCRIPTOR_SEARCH_Found;
- }
- else if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
- {
- return DESCRIPTOR_SEARCH_Fail;
- }
-
- return DESCRIPTOR_SEARCH_NotFound;
-}
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