tmk_core/tool/mbed/mbed-sdk/libraries/USBHost/USBHostHID/USBHostMouse.cpp

   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 #include "USBHostMouse.h"
  18
  19 #if USBHOST_MOUSE
  20
  21 USBHostMouse::USBHostMouse() {
  22     host = USBHost::getHostInst();
  23     init();
  24 }
  25
  26 void USBHostMouse::init() {
  27     dev = NULL;
  28     int_in = NULL;
  29     onUpdate = NULL;
  30     onButtonUpdate = NULL;
  31     onXUpdate = NULL;
  32     onYUpdate = NULL;
  33     onZUpdate = NULL;
  34     report_id = 0;
  35     dev_connected = false;
  36     mouse_device_found = false;
  37     mouse_intf = -1;
  38
  39     buttons = 0;
  40     x = 0;
  41     y = 0;
  42     z = 0;
  43 }
  44
  45 bool USBHostMouse::connected() {
  46     return dev_connected;
  47 }
  48
  49 bool USBHostMouse::connect() {
  50     int len_listen;
  51
  52     if (dev_connected) {
  53         return true;
  54     }
  55
  56     for (uint8_t i = 0; i < MAX_DEVICE_CONNECTED; i++) {
  57         if ((dev = host->getDevice(i)) != NULL) {
  58
  59             if(host->enumerate(dev, this))
  60                 break;
  61
  62             if (mouse_device_found) {
  63
  64                 int_in = dev->getEndpoint(mouse_intf, INTERRUPT_ENDPOINT, IN);
  65                 if (!int_in)
  66                     break;
  67
  68                 USB_INFO("New Mouse device: VID:%04x PID:%04x [dev: %p - intf: %d]", dev->getVid(), dev->getPid(), dev, mouse_intf);
  69                 dev->setName("Mouse", mouse_intf);
  70                 host->registerDriver(dev, mouse_intf, this, &USBHostMouse::init);
  71
  72                 int_in->attach(this, &USBHostMouse::rxHandler);
  73                 len_listen = int_in->getSize();
  74                 if (len_listen > sizeof(report)) {
  75                     len_listen = sizeof(report);
  76                 }
  77                 host->interruptRead(dev, int_in, report, len_listen, false);
  78
  79                 dev_connected = true;
  80                 return true;
  81             }
  82         }
  83     }
  84     init();
  85     return false;
  86 }
  87
  88 void USBHostMouse::rxHandler() {
  89     int len_listen = int_in->getSize();
  90
  91     if (onUpdate) {
  92         (*onUpdate)(report[0] & 0x07, report[1], report[2], report[3]);
  93     }
  94
  95     if (onButtonUpdate && (buttons != (report[0] & 0x07))) {
  96         (*onButtonUpdate)(report[0] & 0x07);
  97     }
  98
  99     if (onXUpdate && (x != report[1])) {
 100         (*onXUpdate)(report[1]);
 101     }
 102
 103     if (onYUpdate && (y != report[2])) {
 104         (*onYUpdate)(report[2]);
 105     }
 106
 107     if (onZUpdate && (z != report[3])) {
 108         (*onZUpdate)(report[3]);
 109     }
 110
 111     // update mouse state
 112     buttons = report[0] & 0x07;
 113     x = report[1];
 114     y = report[2];
 115     z = report[3];
 116
 117     if (len_listen > sizeof(report)) {
 118         len_listen = sizeof(report);
 119     }
 120
 121     if (dev)
 122         host->interruptRead(dev, int_in, report, len_listen, false);
 123 }
 124
 125 /*virtual*/ void USBHostMouse::setVidPid(uint16_t vid, uint16_t pid)
 126 {
 127     // we don't check VID/PID for mouse driver
 128 }
 129
 130 /*virtual*/ bool USBHostMouse::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
 131 {
 132     if ((mouse_intf == -1) &&
 133         (intf_class == HID_CLASS) &&
 134         (intf_subclass == 0x01) &&
 135         (intf_protocol == 0x02)) {
 136         mouse_intf = intf_nb;
 137         return true;
 138     }
 139     return false;
 140 }
 141
 142 /*virtual*/ bool USBHostMouse::useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir) //Must return true if the endpoint will be used
 143 {
 144     if (intf_nb == mouse_intf) {
 145         if (type == INTERRUPT_ENDPOINT && dir == IN) {
 146             mouse_device_found = true;
 147             return true;
 148         }
 149     }
 150     return false;
 151 }
 152
 153 #endif