/*
LUFA Library
- Copyright (C) Dean Camera, 2010.
-
+ Copyright (C) Dean Camera, 2012.
+
dean [at] fourwalledcubicle [dot] com
- www.fourwalledcubicle.com
+ www.lufa-lib.org
*/
/*
- Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+ Copyright 2012 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
void* CurrConfigLocation = ConfigDescriptorData;
uint16_t CurrConfigBytesRem;
+ USB_Descriptor_Interface_t* HIDInterface = NULL;
+ USB_HID_Descriptor_HID_t* HIDDescriptor = 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)))
{
return ControlError;
}
- /* Get the joystick interface from the configuration descriptor */
- if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
- DComp_NextJoystickInterface) != DESCRIPTOR_SEARCH_COMP_Found)
- {
- /* Descriptor not found, error out */
- return NoHIDInterfaceFound;
- }
-
- /* Get the joystick interface's HID descriptor */
- if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
- DComp_NextHID) != DESCRIPTOR_SEARCH_COMP_Found)
+ while (!(DataINEndpoint))
{
- /* Descriptor not found, error out */
- return NoHIDDescriptorFound;
- }
+ /* 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_NextJoystickInterfaceDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
+ {
+ /* Get the next HID interface from the configuration descriptor */
+ if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
+ DComp_NextJoystickInterface) != DESCRIPTOR_SEARCH_COMP_Found)
+ {
+ /* Descriptor not found, error out */
+ return NoCompatibleInterfaceFound;
+ }
- /* Save the HID report size for later use */
- HIDReportSize = DESCRIPTOR_CAST(CurrConfigLocation, USB_Descriptor_HID_t).HIDReportLength;
-
- /* Get the joystick interface's data endpoint descriptor */
- if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
- DComp_NextJoystickInterfaceDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
- {
- /* Descriptor not found, error out */
- return NoEndpointFound;
+ /* Save the interface in case we need to refer back to it later */
+ HIDInterface = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Interface_t);
+
+ /* Get the HID descriptor from the configuration descriptor */
+ if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
+ DComp_NextHID) != DESCRIPTOR_SEARCH_COMP_Found)
+ {
+ /* Descriptor not found, error out */
+ return NoCompatibleInterfaceFound;
+ }
+
+ /* Save the HID descriptor for later use */
+ HIDDescriptor = DESCRIPTOR_PCAST(CurrConfigLocation, USB_HID_Descriptor_HID_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 joystick data pipe */
- Pipe_ConfigurePipe(JOYSTICK_DATAPIPE, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN,
- EndpointData->EndpointAddress, EndpointData->EndpointSize, PIPE_BANK_SINGLE);
+ /* Configure the HID data IN pipe */
+ Pipe_ConfigurePipe(JOYSTICK_DATA_IN_PIPE, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN,
+ DataINEndpoint->EndpointAddress, DataINEndpoint->EndpointSize, PIPE_BANK_SINGLE);
+ Pipe_SetInterruptPeriod(DataINEndpoint->PollingIntervalMS);
+
+ /* Get the HID report size from the HID report descriptor */
+ HIDReportSize = HIDDescriptor->HIDReportLength;
/* Valid data found, return success */
return SuccessfulConfigRead;
*/
uint8_t DComp_NextJoystickInterface(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)
{
- /* Check the HID descriptor class and protocol, break out if correct class/protocol interface found */
- if ((DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).Class == JOYSTICK_CLASS) &&
- (DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).Protocol == JOYSTICK_PROTOCOL))
+ USB_Descriptor_Interface_t* Interface = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Interface_t);
+
+ /* Check the HID descriptor class, break out if correct class interface found */
+ if ((Interface->Class == HID_CSCP_HIDClass))
{
return DESCRIPTOR_SEARCH_Found;
}
}
-
+
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_NextJoystickInterfaceDataEndpoint(void* CurrentDescriptor)
{
- if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Endpoint)
- {
- if (DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Endpoint_t).EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
- return DESCRIPTOR_SEARCH_Found;
- }
- else if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
- {
- return DESCRIPTOR_SEARCH_Fail;
- }
+ USB_Descriptor_Header_t* Header = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Header_t);
- return DESCRIPTOR_SEARCH_NotFound;
+ if (Header->Type == DTYPE_Endpoint)
+ return DESCRIPTOR_SEARCH_Found;
+ else if (Header->Type == DTYPE_Interface)
+ return DESCRIPTOR_SEARCH_Fail;
+ else
+ return DESCRIPTOR_SEARCH_NotFound;
}
/** Descriptor comparator function. This comparator function is can be called while processing an attached USB device's
*/
uint8_t DComp_NextHID(void* CurrentDescriptor)
{
- if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_HID)
+ USB_Descriptor_Header_t* Header = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Header_t);
+
+ if (Header->Type == HID_DTYPE_HID)
return DESCRIPTOR_SEARCH_Found;
else
- return DESCRIPTOR_SEARCH_NotFound;
+ return DESCRIPTOR_SEARCH_NotFound;
}
+
projects / pub / USBasp.git / blobdiff