/*
LUFA Library
Copyright (C) Dean Camera, 2010.
-
+
dean [at] fourwalledcubicle [dot] com
- www.fourwalledcubicle.com
+ www.lufa-lib.org
*/
/*
Copyright 2010 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
uint8_t ConfigDescriptorData[512];
void* CurrConfigLocation = ConfigDescriptorData;
uint16_t CurrConfigBytesRem;
- uint8_t FoundEndpoints = 0;
+
+ USB_Descriptor_Endpoint_t* DataINEndpoint = NULL;
+ USB_Descriptor_Endpoint_t* DataOUTEndpoint = NULL;
+ USB_Descriptor_Endpoint_t* EventsEndpoint = NULL;
/* Retrieve the entire configuration descriptor into the allocated buffer */
switch (USB_Host_GetDeviceConfigDescriptor(1, &CurrConfigBytesRem, ConfigDescriptorData, sizeof(ConfigDescriptorData)))
case HOST_GETCONFIG_BuffOverflow:
return DescriptorTooLarge;
default:
- return ControlError;
+ return DevControlError;
}
-
- /* The bluetooth USB transport addendum mandates that the data (not streaming voice) endpoints
+
+ /* The Bluetooth USB transport addendum mandates that the data (not streaming voice) endpoints
be in the first interface descriptor (interface 0) */
USB_GetNextDescriptorOfType(&CurrConfigBytesRem, &CurrConfigLocation, DTYPE_Interface);
-
+
/* Ensure that an interface was found, and the end of the descriptor was not reached */
if (!(CurrConfigBytesRem))
- return NoBTInterfaceFound;
+ return NoCompatibleInterfaceFound;
- /* Get the data IN, data OUT and event notification endpoints for the bluetooth interface */
- while (FoundEndpoints != ((1 << BLUETOOTH_DATA_IN_PIPE) | (1 << BLUETOOTH_DATA_OUT_PIPE) |
- (1 << BLUETOOTH_EVENTS_PIPE)))
+ while (!(DataINEndpoint) || !(DataOUTEndpoint))
{
- /* Fetch the next endpoint from the current bluetooth interface */
+ /* Get the next Still Image interface's data endpoint descriptor */
if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
- DComp_NextInterfaceBluetoothDataEndpoint))
+ DComp_NextInterfaceBluetoothDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
{
- /* Descriptor not found, error out */
- return NoEndpointFound;
+ /* Data endpoints not found within the first bluetooth device interface, error out */
+ return NoCompatibleInterfaceFound;
}
-
+
+ /* Retrieve the endpoint address from the endpoint descriptor */
USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Endpoint_t);
- /* Check if the endpoint is a bulk or interrupt type endpoint */
- if ((EndpointData->Attributes & EP_TYPE_MASK) == EP_TYPE_INTERRUPT)
+ /* If the endpoint is a IN type endpoint */
+ if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
{
- if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
- {
- /* Configure the events IN pipe */
- Pipe_ConfigurePipe(BLUETOOTH_EVENTS_PIPE, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN,
- EndpointData->EndpointAddress, EndpointData->EndpointSize,
- PIPE_BANK_SINGLE);
-
- Pipe_SetInterruptPeriod(EndpointData->PollingIntervalMS);
-
- /* Set the flag indicating that the events notification pipe has been found */
- FoundEndpoints |= (1 << BLUETOOTH_EVENTS_PIPE);
- }
+ /* Check if the found endpoint is a interrupt or bulk type descriptor */
+ if ((EndpointData->Attributes & EP_TYPE_MASK) == EP_TYPE_INTERRUPT)
+ EventsEndpoint = EndpointData;
+ else
+ DataINEndpoint = EndpointData;
}
else
{
- if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
- {
- /* Configure the data IN pipe */
- Pipe_ConfigurePipe(BLUETOOTH_DATA_IN_PIPE, EP_TYPE_BULK, PIPE_TOKEN_IN,
- EndpointData->EndpointAddress, EndpointData->EndpointSize,
- PIPE_BANK_SINGLE);
-
- /* Set the flag indicating that the data IN pipe has been found */
- FoundEndpoints |= (1 << BLUETOOTH_DATA_IN_PIPE);
- }
- else
- {
- /* Configure the data OUT pipe */
- Pipe_ConfigurePipe(BLUETOOTH_DATA_OUT_PIPE, EP_TYPE_BULK, PIPE_TOKEN_OUT,
- EndpointData->EndpointAddress, EndpointData->EndpointSize,
- PIPE_BANK_SINGLE);
-
- /* Set the flag indicating that the data OUT pipe has been found */
- FoundEndpoints |= (1 << BLUETOOTH_DATA_OUT_PIPE);
- }
+ DataOUTEndpoint = EndpointData;
}
-
}
+ /* Configure the Bluetooth data IN pipe */
+ Pipe_ConfigurePipe(BLUETOOTH_DATA_IN_PIPE, EP_TYPE_BULK, PIPE_TOKEN_IN,
+ DataINEndpoint->EndpointAddress, DataINEndpoint->EndpointSize, PIPE_BANK_SINGLE);
+
+ /* Configure the Bluetooth data OUT pipe */
+ Pipe_ConfigurePipe(BLUETOOTH_DATA_OUT_PIPE, EP_TYPE_BULK, PIPE_TOKEN_OUT,
+ DataOUTEndpoint->EndpointAddress, DataOUTEndpoint->EndpointSize, PIPE_BANK_SINGLE);
+
+ /* Configure the Bluetooth events pipe */
+ Pipe_ConfigurePipe(BLUETOOTH_EVENTS_PIPE, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN,
+ EventsEndpoint->EndpointAddress, EventsEndpoint->EndpointSize, PIPE_BANK_SINGLE);
+ Pipe_SetInterruptPeriod(EventsEndpoint->PollingIntervalMS);
+
/* Valid data found, return success */
return SuccessfulConfigRead;
}
* 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 Endpoint descriptor inside the current interface descriptor, aborting the
+ * 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_NextInterfaceBluetoothDataEndpoint(void* CurrentDescriptor)
{
- /* Determine the type of the current descriptor */
- if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Endpoint)
- {
- /* 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 / USBasp.git / blobdiff