USBHostMouse.h

00001 /* mbed USBHost Library
00002  * Copyright (c) 2006-2013 ARM Limited
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  *     http://www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 
00017 #include "USBHost.h"
00018 
00019 class USBHostMouse : public IUSBEnumerator {
00020 public:
00021 
00022     /**
00023     * Constructor
00024     */
00025     USBHostMouse();
00026 
00027     /**
00028      * Try to connect a mouse device
00029      *
00030      * @return true if connection was successful
00031      */
00032     bool connect();
00033 
00034     /**
00035     * Check if a mouse is connected
00036     *
00037     * @returns true if a mouse is connected
00038     */
00039     bool connected();
00040 
00041     int readReport(uint8_t* data) {
00042         int rc = host->interruptRead(dev, int_in, data, 4);
00043         return rc == USB_TYPE_OK ? 4 : 0;
00044     }
00045     void attachEvent(void (*ptr)(uint8_t* data, int size)) {
00046         if (ptr != NULL) {
00047             onUpdate = ptr;
00048         }
00049     }
00050     void poll() {
00051         USB_TYPE rc = host->interruptRead(dev, int_in, report, sizeof(report));
00052         if (rc == USB_TYPE_OK) {
00053             if (onUpdate) {
00054                 (*onUpdate)(report, int_in->getLengthTransferred());
00055             }
00056         }
00057     }
00058 
00059 protected:
00060     //From IUSBEnumerator
00061     virtual void setVidPid(uint16_t vid, uint16_t pid);
00062     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
00063     virtual bool useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir); //Must return true if the endpoint will be used
00064 
00065 private:
00066     USBHost * host;
00067     USBDeviceConnected * dev;
00068     USBEndpoint * int_in;
00069     uint8_t report[4];
00070     
00071     bool dev_connected;
00072     bool mouse_device_found;
00073     int mouse_intf;
00074 
00075     uint8_t buttons;
00076     int8_t x;
00077     int8_t y;
00078     int8_t z;
00079 
00080     void (*onUpdate)(uint8_t* data, int size);
00081     void (*onButtonUpdate)(uint8_t buttons);
00082     void (*onXUpdate)(int8_t x);
00083     void (*onYUpdate)(int8_t y);
00084     void (*onZUpdate)(int8_t z);
00085     int report_id;
00086     void init();
00087 };
00088