diff options
Diffstat (limited to 'Demos/Host/ClassDriver/CDCHost')
| -rw-r--r-- | Demos/Host/ClassDriver/CDCHost/ConfigDescriptor.c | 255 | ||||
| -rw-r--r-- | Demos/Host/ClassDriver/CDCHost/ConfigDescriptor.h | 85 |
2 files changed, 0 insertions, 340 deletions
diff --git a/Demos/Host/ClassDriver/CDCHost/ConfigDescriptor.c b/Demos/Host/ClassDriver/CDCHost/ConfigDescriptor.c deleted file mode 100644 index baf02a216..000000000 --- a/Demos/Host/ClassDriver/CDCHost/ConfigDescriptor.c +++ /dev/null @@ -1,255 +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 CDC interface descriptor containing bulk data IN and OUT endpoints, and an interrupt event endpoint.
- *
- * \return An error code from the CDCHost_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 CDC control interface from the configuration descriptor */
- if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
- DComp_NextCDCControlInterface) != DESCRIPTOR_SEARCH_COMP_Found)
- {
- /* Descriptor not found, error out */
- return NoCDCInterfaceFound;
- }
-
- /* Get the IN and OUT data endpoints for the CDC interface */
- while (FoundEndpoints != ((1 << CDC_NOTIFICATIONPIPE) | (1 << CDC_DATAPIPE_IN) | (1 << CDC_DATAPIPE_OUT)))
- {
- /* Fetch the next bulk or interrupt endpoint from the current CDC interface */
- if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
- DComp_NextInterfaceCDCDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
- {
- /* Check to see if the control interface's notification pipe has been found, if so search for the data interface */
- if (FoundEndpoints & (1 << CDC_NOTIFICATIONPIPE))
- {
- /* Get the next CDC data interface from the configuration descriptor (CDC class has two CDC interfaces) */
- if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
- DComp_NextCDCDataInterface) != DESCRIPTOR_SEARCH_COMP_Found)
- {
- /* Descriptor not found, error out */
- return NoCDCInterfaceFound;
- }
- }
- else
- {
- /* Clear the found endpoints mask, since any already processed endpoints aren't in the CDC interface we need */
- FoundEndpoints = 0;
-
- /* Disable any already configured pipes from the invalid CDC interfaces */
- Pipe_SelectPipe(CDC_NOTIFICATIONPIPE);
- Pipe_DisablePipe();
- Pipe_SelectPipe(CDC_DATAPIPE_IN);
- Pipe_DisablePipe();
- Pipe_SelectPipe(CDC_DATAPIPE_OUT);
- Pipe_DisablePipe();
-
- /* Get the next CDC control interface from the configuration descriptor (CDC class has two CDC interfaces) */
- if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
- DComp_NextCDCControlInterface) != DESCRIPTOR_SEARCH_COMP_Found)
- {
- /* Descriptor not found, error out */
- return NoCDCInterfaceFound;
- }
- }
-
- /* Fetch the next bulk or interrupt endpoint from the current CDC interface */
- if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
- DComp_NextInterfaceCDCDataEndpoint) != 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 notification pipe */
- Pipe_ConfigurePipe(CDC_NOTIFICATIONPIPE, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN,
- EndpointData->EndpointAddress, EndpointData->EndpointSize, PIPE_BANK_SINGLE);
-
- Pipe_SetInfiniteINRequests();
- Pipe_SetInterruptPeriod(EndpointData->PollingIntervalMS);
-
- /* Set the flag indicating that the notification pipe has been found */
- FoundEndpoints |= (1 << CDC_NOTIFICATIONPIPE);
- }
- }
- 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(CDC_DATAPIPE_IN, EP_TYPE_BULK, PIPE_TOKEN_IN,
- EndpointData->EndpointAddress, EndpointData->EndpointSize, PIPE_BANK_SINGLE);
-
- Pipe_SetInfiniteINRequests();
- Pipe_Unfreeze();
-
- /* Set the flag indicating that the data IN pipe has been found */
- FoundEndpoints |= (1 << CDC_DATAPIPE_IN);
- }
- else
- {
- /* Configure the data OUT pipe */
- Pipe_ConfigurePipe(CDC_DATAPIPE_OUT, EP_TYPE_BULK, PIPE_TOKEN_OUT,
- EndpointData->EndpointAddress, EndpointData->EndpointSize, PIPE_BANK_SINGLE);
-
- Pipe_Unfreeze();
-
- /* Set the flag indicating that the data OUT pipe has been found */
- FoundEndpoints |= (1 << CDC_DATAPIPE_OUT);
- }
- }
- }
-
- /* 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 CDC control Class, Subclass and Protocol values.
- *
- * \return A value from the DSEARCH_Return_ErrorCodes_t enum
- */
-uint8_t DComp_NextCDCControlInterface(void* CurrentDescriptor)
-{
- if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
- {
- /* Check the CDC descriptor class, subclass and protocol, break out if correct control interface found */
- if ((DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).Class == CDC_CONTROL_CLASS) &&
- (DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).SubClass == CDC_CONTROL_SUBCLASS) &&
- (DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).Protocol == CDC_CONTROL_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 Interface descriptor of the correct CDC data Class, Subclass and Protocol values.
- *
- * \return A value from the DSEARCH_Return_ErrorCodes_t enum
- */
-uint8_t DComp_NextCDCDataInterface(void* CurrentDescriptor)
-{
- if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
- {
- /* Check the CDC descriptor class, subclass and protocol, break out if correct data interface found */
- if ((DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).Class == CDC_DATA_CLASS) &&
- (DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).SubClass == CDC_DATA_SUBCLASS) &&
- (DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).Protocol == CDC_DATA_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 IN or OUT endpoint, or interrupt IN endpoint within the current interface,
- * aborting the search if another interface descriptor is found before the required endpoint (so that it may be compared
- * using a different comparator to determine if it is another CDC class interface).
- *
- * \return A value from the DSEARCH_Return_ErrorCodes_t enum
- */
-uint8_t DComp_NextInterfaceCDCDataEndpoint(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;
-}
diff --git a/Demos/Host/ClassDriver/CDCHost/ConfigDescriptor.h b/Demos/Host/ClassDriver/CDCHost/ConfigDescriptor.h deleted file mode 100644 index 1a118cad3..000000000 --- a/Demos/Host/ClassDriver/CDCHost/ConfigDescriptor.h +++ /dev/null @@ -1,85 +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
- *
- * Header file for ConfigDescriptor.c.
- */
-
-#ifndef _CONFIGDESCRIPTOR_H_
-#define _CONFIGDESCRIPTOR_H_
-
- /* Includes: */
- #include <LUFA/Drivers/USB/USB.h> // USB Functionality
-
- #include "CDCHost.h"
-
- /* Macros: */
- /** Interface Class value for the CDC class */
- #define CDC_CONTROL_CLASS 0x02
-
- /** Interface Class value for the CDC Communication Interface subclass */
- #define CDC_CONTROL_SUBCLASS 0x02
-
- /** Interface Class value for the CDC protocol */
- #define CDC_CONTROL_PROTOCOL 0x01
-
- /** Interface Class value for the CDC data class */
- #define CDC_DATA_CLASS 0x0A
-
- /** Interface Class value for the CDC data subclass (unused) */
- #define CDC_DATA_SUBCLASS 0x00
-
- /** Interface Class value for the CDC data protocol */
- #define CDC_DATA_PROTOCOL 0x00
-
- /** Maximum size of a device configuration descriptor which can be processed by the host, in bytes */
- #define MAX_CONFIG_DESCRIPTOR_SIZE 512
-
- /* Enums: */
- /** Enum for the possible return codes of the ProcessConfigurationDescriptor() function. */
- enum CDCHost_GetConfigDescriptorDataCodes_t
- {
- SuccessfulConfigRead = 0, /**< Configuration Descriptor was processed successfully */
- ControlError = 1, /**< A control request to the device failed to complete successfully */
- DescriptorTooLarge = 2, /**< The device's Configuration Descriptor is too large to process */
- InvalidConfigDataReturned = 3, /**< The device returned an invalid Configuration Descriptor */
- NoCDCInterfaceFound = 4, /**< A compatible CDC interface was not found in the device's Configuration Descriptor */
- NoEndpointFound = 5, /**< Compatible CDC endpoints were not found in the device's CDC interface */
- };
-
- /* Function Prototypes: */
- uint8_t ProcessConfigurationDescriptor(void);
-
- uint8_t DComp_NextCDCControlInterface(void* CurrentDescriptor);
- uint8_t DComp_NextCDCDataInterface(void* CurrentDescriptor);
- uint8_t DComp_NextInterfaceCDCDataEndpoint(void* CurrentDescriptor);
-
-#endif
|