diff options
Diffstat (limited to 'Demos/Host/Incomplete/BluetoothHost/ConfigDescriptor.c')
| -rw-r--r-- | Demos/Host/Incomplete/BluetoothHost/ConfigDescriptor.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/Demos/Host/Incomplete/BluetoothHost/ConfigDescriptor.c b/Demos/Host/Incomplete/BluetoothHost/ConfigDescriptor.c index f0d9c1a8a..a69b7b353 100644 --- a/Demos/Host/Incomplete/BluetoothHost/ConfigDescriptor.c +++ b/Demos/Host/Incomplete/BluetoothHost/ConfigDescriptor.c @@ -133,15 +133,30 @@ uint8_t ProcessConfigurationDescriptor(void) return SuccessfulConfigRead;
}
+/** Descriptor comparator function. This comparator function is can be called while processing an attached USB device's
+ * 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
+ * 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)
{
- /* PURPOSE: Find next interface endpoint descriptor before next interface descriptor */
-
+ /* Determine the type of the current descriptor */
if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Endpoint)
- return DESCRIPTOR_SEARCH_Found;
+ {
+ /* Indicate that the descriptor being searched for has been found */
+ return DESCRIPTOR_SEARCH_Found;
+ }
else if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
- return DESCRIPTOR_SEARCH_Fail;
+ {
+ /* Indicate that the search has failed prematurely and should be aborted */
+ return DESCRIPTOR_SEARCH_Fail;
+ }
+ /* Current descriptor does not match what this comparator is looking for */
return DESCRIPTOR_SEARCH_NotFound;
}
|