USBHostGamepad.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 #ifndef USBHOSTGAMEPAD_H
00018 #define USBHOSTGAMEPAD_H
00019 
00020 #include "USBHostConf.h"
00021 
00022 #define USBHOST_GAMEPAD 1
00023 
00024 #if USBHOST_GAMEPAD
00025 
00026 #include "USBHost.h"
00027 
00028 /**
00029  * A class to communicate a USB Gamepad
00030  */
00031 class USBHostGamepad : public IUSBEnumerator
00032 {
00033 public:
00034 
00035     /**
00036     * Constructor
00037     */
00038     USBHostGamepad();
00039 
00040     /**
00041      * Try to connect a Gamepad device
00042      *
00043      * @return true if connection was successful
00044      */
00045     bool connect();
00046 
00047     /**
00048     * Check if a Gamepad is connected
00049     *
00050     * @returns true if a Gamepad is connected
00051     */
00052     bool connected();
00053 
00054     /**
00055      * Attach a callback called when a Gamepad event is received
00056      *
00057      * @param ptr function pointer
00058      */
00059     inline void attachEvent(void (*ptr)(uint8_t x, uint8_t y, uint8_t z, uint8_t rz, uint16_t buttons))
00060     {
00061         if (ptr != NULL) {
00062             onUpdate = ptr;
00063         }
00064     }
00065 
00066 protected:
00067     //From IUSBEnumerator
00068     virtual void setVidPid(uint16_t vid, uint16_t pid);
00069     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
00070     virtual bool useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir); //Must return true if the endpoint will be used
00071 
00072 private:
00073     USBHost * host;
00074     USBDeviceConnected * dev;
00075     USBEndpoint * int_in;
00076     uint8_t report[8];
00077     bool dev_connected;
00078     bool gamepad_device_found;
00079     int gamepad_intf;
00080 
00081     void rxHandler();
00082     void (*onUpdate)(uint8_t x, uint8_t y, uint8_t z, uint8_t rz, uint16_t buttons);
00083     int report_id;
00084     void init();
00085 };
00086 
00087 #endif
00088 
00089 #endif