UsbHostMgr.h

00001 /*
00002 Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
00003  
00004 Permission is hereby granted, free of charge, to any person obtaining a copy
00005 of this software and associated documentation files (the "Software"), to deal
00006 in the Software without restriction, including without limitation the rights
00007 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00008 copies of the Software, and to permit persons to whom the Software is
00009 furnished to do so, subject to the following conditions:
00010  
00011 The above copyright notice and this permission notice shall be included in
00012 all copies or substantial portions of the Software.
00013  
00014 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00015 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00016 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00017 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00018 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00019 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00020 THE SOFTWARE.
00021 */
00022 
00023 //Assigns addresses to connected devices...
00024 
00025 #ifndef USB_HOSTMGR_H
00026 #define USB_HOSTMGR_H
00027 
00028 #include "mbed.h"
00029 #include "UsbInc.h"
00030 #include "UsbDevice.h"
00031 
00032 #define USB_HOSTMGR_MAX_DEVS 2 //2 devices max for now... will be more when hubs are supported
00033 
00034 class UsbDevice;
00035 
00036 class UsbHostMgr //[0-1] inst
00037 {
00038 public:
00039   UsbHostMgr();
00040   ~UsbHostMgr();
00041   
00042   UsbErr init(); //Initialize host
00043   
00044   void poll(); //Enumerate connected devices, etc
00045   
00046   int devicesCount();
00047   
00048   UsbDevice* getDevice(int item);
00049   void releaseDevice(UsbDevice* pDev);
00050   
00051 
00052   void UsbIrqhandler();
00053 
00054 protected:  
00055   void onUsbDeviceConnected(int hub, int port);
00056   void onUsbDeviceDisconnected(int hub, int port);
00057   
00058   friend class UsbDevice;
00059   void resetPort(int hub, int port);
00060   
00061 private:
00062 /*  __align(8)*/ volatile HCCA* m_pHcca;
00063   
00064   UsbDevice* m_lpDevices[USB_HOSTMGR_MAX_DEVS]; 
00065 };
00066 
00067 #endif