aboutsummaryrefslogtreecommitdiffstats
path: root/Demos/BluetoothHost/ConfigDescriptor.c
diff options
context:
space:
mode:
authorDean Camera <dean@fourwalledcubicle.com>2009-02-23 07:08:17 +0000
committerDean Camera <dean@fourwalledcubicle.com>2009-02-23 07:08:17 +0000
commit9991321321d30ca9383d795ea7e796098c92045f (patch)
treecd3bd40eef421cc83c9d63e58f5def8a233acab6 /Demos/BluetoothHost/ConfigDescriptor.c
parentc1a1b6eeecb375259968ef6d989833312047f2d8 (diff)
downloadlufa-9991321321d30ca9383d795ea7e796098c92045f.tar.gz
lufa-9991321321d30ca9383d795ea7e796098c92045f.tar.bz2
lufa-9991321321d30ca9383d795ea7e796098c92045f.zip
Moved all source to the trunk directory.
Diffstat (limited to 'Demos/BluetoothHost/ConfigDescriptor.c')
-rw-r--r--Demos/BluetoothHost/ConfigDescriptor.c139
1 files changed, 139 insertions, 0 deletions
diff --git a/Demos/BluetoothHost/ConfigDescriptor.c b/Demos/BluetoothHost/ConfigDescriptor.c
new file mode 100644
index 000000000..16ba1b060
--- /dev/null
+++ b/Demos/BluetoothHost/ConfigDescriptor.c
@@ -0,0 +1,139 @@
+/*
+ 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.
+*/
+
+#include "ConfigDescriptor.h"
+
+uint8_t ProcessConfigurationDescriptor(void)
+{
+ uint8_t* ConfigDescriptorData;
+ uint16_t ConfigDescriptorSize;
+ uint8_t FoundEndpoints = 0;
+
+ /* Get Configuration Descriptor size from the device */
+ if (USB_Host_GetDeviceConfigDescriptor(&ConfigDescriptorSize, NULL) != HOST_SENDCONTROL_Successful)
+ return ControlErrorDuringConfigRead;
+
+ /* 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_Host_GetDeviceConfigDescriptor(&ConfigDescriptorSize, ConfigDescriptorData);
+
+ /* Validate returned data - ensure first entry is a configuration header descriptor */
+ if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
+ return InvalidConfigDataReturned;
+
+ /* The bluetooth USB transport addendium mandates that the data (not streaming voice) endpoints
+ be in the first interface descriptor (interface 0) */
+ USB_Host_GetNextDescriptorOfType(&ConfigDescriptorSize, &ConfigDescriptorData, DTYPE_Interface);
+
+ /* Ensure that an interface was found, and the end of the descriptor was not reached */
+ if (!(ConfigDescriptorSize))
+ return NoInterfaceFound;
+
+ /* 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)))
+ {
+ /* Fetch the next endpoint from the current bluetooth interface */
+ if (USB_Host_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
+ NextInterfaceBluetoothDataEndpoint))
+ {
+ /* Descriptor not found, error out */
+ return NoEndpointFound;
+ }
+
+ USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, 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 (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_SetInfiniteINRequests();
+ Pipe_SetInterruptPeriod(EndpointData->PollingIntervalMS);
+
+ /* Set the flag indicating that the events notification pipe has been found */
+ FoundEndpoints |= (1 << BLUETOOTH_EVENTS_PIPE);
+ }
+ }
+ 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);
+
+ Pipe_SetInfiniteINRequests();
+
+ /* 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);
+ }
+ }
+
+ }
+
+ /* Valid data found, return success */
+ return SuccessfulConfigRead;
+}
+
+DESCRIPTOR_COMPARATOR(NextInterfaceBluetoothDataEndpoint)
+{
+ /* PURPOSE: Find next interface endpoint descriptor before next interface descriptor */
+
+ if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Endpoint)
+ return Descriptor_Search_Found;
+ else if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
+ return Descriptor_Search_Fail;
+
+ return Descriptor_Search_NotFound;
+}
+