/*
LUFA Library
- Copyright (C) Dean Camera, 2010.
-
+ Copyright (C) Dean Camera, 2019.
+
dean [at] fourwalledcubicle [dot] com
- www.fourwalledcubicle.com
+ www.lufa-lib.org
*/
/*
- Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+ Copyright 2019 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
void* CurrConfigLocation = ConfigDescriptorData;
uint16_t CurrConfigBytesRem;
+ USB_Descriptor_Interface_t* HIDInterface = NULL;
+ USB_Descriptor_Endpoint_t* DataINEndpoint = NULL;
+
/* Retrieve the entire configuration descriptor into the allocated buffer */
switch (USB_Host_GetDeviceConfigDescriptor(1, &CurrConfigBytesRem, ConfigDescriptorData, sizeof(ConfigDescriptorData)))
{
default:
return ControlError;
}
-
- /* Get the mouse interface from the configuration descriptor */
- if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
- DComp_NextMouseInterface) != DESCRIPTOR_SEARCH_COMP_Found)
- {
- /* Descriptor not found, error out */
- return NoHIDInterfaceFound;
- }
- /* Get the mouse interface's data endpoint descriptor */
- if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
- DComp_NextMouseInterfaceDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
+ while (!(DataINEndpoint))
{
- /* Descriptor not found, error out */
- return NoEndpointFound;
+ /* See if we've found a likely compatible interface, and if there is an endpoint within that interface */
+ if (!(HIDInterface) ||
+ USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
+ DComp_NextMouseInterfaceDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
+ {
+ /* Get the next HID interface from the configuration descriptor */
+ if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
+ DComp_NextMouseInterface) != DESCRIPTOR_SEARCH_COMP_Found)
+ {
+ /* Descriptor not found, error out */
+ return NoCompatibleInterfaceFound;
+ }
+
+ /* Save the interface in case we need to refer back to it later */
+ HIDInterface = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Interface_t);
+
+ /* 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_DIR_MASK) == ENDPOINT_DIR_IN)
+ DataINEndpoint = EndpointData;
}
-
- /* Retrieve the endpoint address from the endpoint descriptor */
- USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Endpoint_t);
- /* Configure the mouse data pipe */
- Pipe_ConfigurePipe(MOUSE_DATAPIPE, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN,
- EndpointData->EndpointAddress, EndpointData->EndpointSize, PIPE_BANK_SINGLE);
+ /* Configure the HID data IN pipe */
+ Pipe_ConfigurePipe(MOUSE_DATA_IN_PIPE, EP_TYPE_INTERRUPT, DataINEndpoint->EndpointAddress, DataINEndpoint->EndpointSize, 1);
+ Pipe_SetInterruptPeriod(DataINEndpoint->PollingIntervalMS);
/* Valid data found, return success */
return SuccessfulConfigRead;
*/
uint8_t DComp_NextMouseInterface(void* CurrentDescriptor)
{
+ USB_Descriptor_Header_t* Header = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Header_t);
+
/* Determine if the current descriptor is an interface descriptor */
- if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
+ if (Header->Type == DTYPE_Interface)
{
+ USB_Descriptor_Interface_t* Interface = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Interface_t);
+
/* Check the HID descriptor class and protocol, break out if correct class/protocol interface found */
- if ((DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).Class == MOUSE_CLASS) &&
- (DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).Protocol == MOUSE_PROTOCOL))
+ if ((Interface->Class == HID_CSCP_HIDClass) &&
+ (Interface->Protocol == HID_CSCP_MouseBootProtocol))
{
/* Indicate that the descriptor being searched for has been found */
return DESCRIPTOR_SEARCH_Found;
}
}
-
+
/* Current descriptor does not match what this comparator is looking for */
return DESCRIPTOR_SEARCH_NotFound;
}
* 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 IN Endpoint descriptor inside the current interface descriptor,
- * aborting the search if another interface descriptor is found before the required endpoint.
+ * 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_NextMouseInterfaceDataEndpoint(void* CurrentDescriptor)
{
- /* Determine the type of the current descriptor */
- if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Endpoint)
- {
- /* Check if the current Endpoint descriptor is of type IN */
- if (DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Endpoint_t).EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
- {
- /* Indicate that the descriptor being searched for has been found */
- return DESCRIPTOR_SEARCH_Found;
- }
- }
- else if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
- {
- /* Indicate that the search has failed prematurely and should be aborted */
- return DESCRIPTOR_SEARCH_Fail;
- }
+ USB_Descriptor_Header_t* Header = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Header_t);
- /* Current descriptor does not match what this comparator is looking for */
- return DESCRIPTOR_SEARCH_NotFound;
+ /* Determine the type of the current descriptor */
+ if (Header->Type == DTYPE_Endpoint)
+ return DESCRIPTOR_SEARCH_Found;
+ else if (Header->Type == DTYPE_Interface)
+ return DESCRIPTOR_SEARCH_Fail;
+ else
+ return DESCRIPTOR_SEARCH_NotFound;
}
+
projects / pub / lufa.git / blobdiff