tmk_core/tool/mbed/mbed-sdk/libraries/USBHost/USBHostHub/USBHostHub.h

   1 /* mbed USBHost Library
   2  * Copyright (c) 2006-2013 ARM Limited
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #ifndef USBHOSTHUB_H
  18 #define USBHOSTHUB_H
  19
  20 #include "USBHostConf.h"
  21
  22 #if MAX_HUB_NB
  23
  24 #include "USBHostTypes.h"
  25 #include "IUSBEnumerator.h"
  26
  27 class USBHost;
  28 class USBDeviceConnected;
  29 class USBEndpoint;
  30
  31 /**
  32  * A class to use a USB Hub
  33  */
  34 class USBHostHub : public IUSBEnumerator {
  35 public:
  36     /**
  37     * Constructor
  38     */
  39     USBHostHub();
  40
  41     /**
  42     * Check if a USB Hub is connected
  43     *
  44     * @return true if a serial device is connected
  45     */
  46     bool connected();
  47
  48     /**
  49      * Try to connect device
  50      *
  51      * @param dev device to connect
  52      * @return true if connection was successful
  53      */
  54     bool connect(USBDeviceConnected * dev);
  55
  56     /**
  57     * Automatically called by USBHost when a device
  58     * has been enumerated by usb_thread
  59     *
  60     * @param dev device connected
  61     */
  62     void deviceConnected(USBDeviceConnected * dev);
  63
  64     /**
  65     * Automatically called by USBHost when a device
  66     * has been disconnected from this hub
  67     *
  68     * @param dev device disconnected
  69     */
  70     void deviceDisconnected(USBDeviceConnected * dev);
  71
  72     /**
  73     * Rest a specific port
  74     *
  75     * @param port port number
  76     */
  77     void portReset(uint8_t port);
  78
  79     /*
  80     * Called by USBHost to set the instance of USBHost
  81     *
  82     * @param host host instance
  83     */
  84     void setHost(USBHost * host);
  85
  86     /**
  87     * Called by USBhost when a hub has been disconnected
  88     */
  89     void hubDisconnected();
  90
  91 protected:
  92     //From IUSBEnumerator
  93     virtual void setVidPid(uint16_t vid, uint16_t pid);
  94     virtual bool parseInterface(uint8_t intf_nb, uint8_t intf_class, uint8_t intf_subclass, uint8_t intf_protocol); //Must return true if the interface should be parsed
  95     virtual bool useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir); //Must return true if the endpoint will be used
  96
  97 private:
  98     USBHost * host;
  99     USBDeviceConnected * dev;
 100     bool dev_connected;
 101     USBEndpoint * int_in;
 102     uint8_t nb_port;
 103     uint8_t hub_characteristics;
 104
 105     void rxHandler();
 106
 107     uint8_t buf[sizeof(HubDescriptor)];
 108
 109     int hub_intf;
 110     bool hub_device_found;
 111
 112     void setPortFeature(uint32_t feature, uint8_t port);
 113     void clearPortFeature(uint32_t feature, uint8_t port);
 114     uint32_t getPortStatus(uint8_t port);
 115
 116     USBDeviceConnected * device_children[MAX_HUB_PORT];
 117
 118     void init();
 119     void disconnect();
 120
 121 };
 122
 123 #endif
 124
 125 #endif