/*
LUFA Library
- Copyright (C) Dean Camera, 2010.
-
+ Copyright (C) Dean Camera, 2013.
+
dean [at] fourwalledcubicle [dot] com
- www.fourwalledcubicle.com
+ www.lufa-lib.org
*/
/*
- Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+ Copyright 2013 Dean Camera (dean [at] fourwalledcubicle [dot] com)
- Permission to use, copy, modify, distribute, and sell this
+ 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
+ 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
+ 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
+ The author disclaims 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
* 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
uint8_t ConfigDescriptorData[512];
void* CurrConfigLocation = ConfigDescriptorData;
uint16_t CurrConfigBytesRem;
-
- USB_Descriptor_Endpoint_t* DataINEndpoint = NULL;
- USB_Descriptor_Endpoint_t* DataOUTEndpoint = NULL;
- USB_Descriptor_Endpoint_t* NotificationEndpoint = NULL;
+
+ USB_Descriptor_Interface_t* CDCControlInterface = NULL;
+ USB_Descriptor_Endpoint_t* DataINEndpoint = NULL;
+ USB_Descriptor_Endpoint_t* DataOUTEndpoint = NULL;
+ USB_Descriptor_Endpoint_t* NotificationEndpoint = NULL;
/* Retrieve the entire configuration descriptor into the allocated buffer */
switch (USB_Host_GetDeviceConfigDescriptor(1, &CurrConfigBytesRem, ConfigDescriptorData, sizeof(ConfigDescriptorData)))
default:
return ControlError;
}
-
- /* Get the first CDC control interface from the configuration descriptor */
- if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
- DComp_NextCDCControlInterface) != DESCRIPTOR_SEARCH_COMP_Found)
- {
- /* Descriptor not found, error out */
- return NoCompatibleInterfaceFound;
- }
while (!(DataINEndpoint) || !(DataOUTEndpoint) || !(NotificationEndpoint))
{
- /* Get the next CDC interface's endpoint descriptor */
- if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
+ /* See if we've found a likely compatible interface, and if there is an endpoint within that interface */
+ if (!(CDCControlInterface) ||
+ USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
DComp_NextCDCDataInterfaceEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Check if we have already found the control interface's notification endpoint or not */
{
/* Descriptor not found, error out */
return NoCompatibleInterfaceFound;
- }
+ }
/* Clear any found endpoints */
DataINEndpoint = NULL;
return NoCompatibleInterfaceFound;
}
+ /* Save the interface in case we need to refer back to it later */
+ CDCControlInterface = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Interface_t);
+
/* Clear any found endpoints */
NotificationEndpoint = NULL;
}
/* Skip the remainder of the loop as we have not found an endpoint yet */
continue;
}
-
+
/* 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)
+ if ((EndpointData->EndpointAddress & ENDPOINT_DIR_MASK) == ENDPOINT_DIR_IN)
{
/* Check if the found endpoint is a interrupt or bulk type descriptor */
if ((EndpointData->Attributes & EP_TYPE_MASK) == EP_TYPE_INTERRUPT)
DataOUTEndpoint = EndpointData;
}
}
-
+
/* Configure the CDC data IN pipe */
- Pipe_ConfigurePipe(CDC_DATA_IN_PIPE, EP_TYPE_BULK, PIPE_TOKEN_IN,
- DataINEndpoint->EndpointAddress, DataINEndpoint->EndpointSize, PIPE_BANK_SINGLE);
+ Pipe_ConfigurePipe(CDC_DATA_IN_PIPE, EP_TYPE_BULK, DataINEndpoint->EndpointAddress, DataINEndpoint->EndpointSize, 1);
/* Configure the CDC data OUT pipe */
- Pipe_ConfigurePipe(CDC_DATA_OUT_PIPE, EP_TYPE_BULK, PIPE_TOKEN_OUT,
- DataOUTEndpoint->EndpointAddress, DataOUTEndpoint->EndpointSize, PIPE_BANK_SINGLE);
+ Pipe_ConfigurePipe(CDC_DATA_OUT_PIPE, EP_TYPE_BULK, DataOUTEndpoint->EndpointAddress, DataOUTEndpoint->EndpointSize, 1);
/* Configure the CDC notification pipe */
- Pipe_ConfigurePipe(CDC_NOTIFICATION_PIPE, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN,
- NotificationEndpoint->EndpointAddress, NotificationEndpoint->EndpointSize, PIPE_BANK_SINGLE);
+ Pipe_ConfigurePipe(CDC_NOTIFICATION_PIPE, EP_TYPE_INTERRUPT, NotificationEndpoint->EndpointAddress, NotificationEndpoint->EndpointSize, 1);
Pipe_SetInterruptPeriod(NotificationEndpoint->PollingIntervalMS);
/* Valid data found, return success */
*/
uint8_t DComp_NextCDCControlInterface(void* CurrentDescriptor)
{
- if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
+ USB_Descriptor_Header_t* Header = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Header_t);
+
+ if (Header->Type == DTYPE_Interface)
{
+ USB_Descriptor_Interface_t* Interface = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Interface_t);
+
/* 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))
+ if ((Interface->Class == CDC_CSCP_CDCClass) &&
+ (Interface->SubClass == CDC_CSCP_ACMSubclass) &&
+ (Interface->Protocol == CDC_CSCP_ATCommandProtocol))
{
return DESCRIPTOR_SEARCH_Found;
}
}
-
+
return DESCRIPTOR_SEARCH_NotFound;
}
*/
uint8_t DComp_NextCDCDataInterface(void* CurrentDescriptor)
{
- if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
+ USB_Descriptor_Header_t* Header = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Header_t);
+
+ if (Header->Type == DTYPE_Interface)
{
+ USB_Descriptor_Interface_t* Interface = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Interface_t);
+
/* 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))
+ if ((Interface->Class == CDC_CSCP_CDCDataClass) &&
+ (Interface->SubClass == CDC_CSCP_NoDataSubclass) &&
+ (Interface->Protocol == CDC_CSCP_NoDataProtocol))
{
return DESCRIPTOR_SEARCH_Found;
}
}
-
+
return DESCRIPTOR_SEARCH_NotFound;
}
*/
uint8_t DComp_NextCDCDataInterfaceEndpoint(void* CurrentDescriptor)
{
- if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Endpoint)
+ USB_Descriptor_Header_t* Header = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Header_t);
+
+ if (Header->Type == 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;
+ USB_Descriptor_Endpoint_t* Endpoint = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Endpoint_t);
+
+ if (((Endpoint->Attributes & EP_TYPE_MASK) == EP_TYPE_BULK) ||
+ ((Endpoint->Attributes & EP_TYPE_MASK) == EP_TYPE_INTERRUPT))
+ {
+ return DESCRIPTOR_SEARCH_Found;
+ }
}
- else if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
+ else if (Header->Type == DTYPE_Interface)
{
return DESCRIPTOR_SEARCH_Fail;
}
return DESCRIPTOR_SEARCH_NotFound;
}
+
projects / pub / USBasp.git / blobdiff