Diff: USBHost/USBHost.cpp

Revision:

8:93da8ea2708b

Parent:

6:1571e517a91b

Child:

9:7671b6a8c363

diff -r e7e63ac7ae5f -r 93da8ea2708b USBHost/USBHost.cpp
--- a/USBHost/USBHost.cpp	Wed Mar 13 17:30:42 2013 +0000
+++ b/USBHost/USBHost.cpp	Thu Mar 14 11:49:53 2013 +0000
@@ -1,20 +1,18 @@
-/* Copyright (c) 2010-2012 mbed.org, MIT License
-*
-* Permission is hereby granted, free of charge, to any person obtaining a copy of this software
-* and associated documentation files (the "Software"), to deal in the Software without
-* restriction, including without limitation the rights to use, copy, modify, merge, publish,
-* distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
-* Software is furnished to do so, subject to the following conditions:
-*
-* The above copyright notice and this permission notice shall be included in all copies or
-* substantial portions of the Software.
-*
-* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
-* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-*/
+/* mbed USBHost Library
+ * Copyright (c) 2006-2013 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 
 
 #include "USBHost.h"
@@ -35,7 +33,20 @@
 /**
 * How interrupts are processed:
 *    - new device connected:
-*       a message is queued
+*       - a message is queued in queue_usb_event with the id DEVICE_CONNECTED_EVENT
+*       - when the usb_thread receives the event, it:
+*           - resets the device
+*           - reads the device descriptor
+*           - sets the address of the device
+*           - if it is a hub, enumerates it
+*   - device disconnected:
+*       - a message is queued in queue_usb_event with the id DEVICE_DISCONNECTED_EVENT
+*       - when the usb_thread receives the event, it:
+*           - free the device and all its children (hub)
+*   - td processed
+*       - a message is queued in queue_usb_event with the id TD_PROCESSED_EVENT
+*       - when the usb_thread receives the event, it:
+*           - call the callback attached to the endpoint where the td is attached
 */
 void USBHost::usb_process() {