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/* mbed USBHost Library
* Copyright (c) 2006-2013 ARM Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef USBHOSTKEYBOARD_H
#define USBHOSTKEYBOARD_H
#include "USBHostConf.h"
#if USBHOST_KEYBOARD
#include "USBHost.h"
/**
* A class to communicate a USB keyboard
*/
class USBHostKeyboard : public IUSBEnumerator {
public:
/**
* Constructor
*/
USBHostKeyboard();
/**
* Try to connect a keyboard device
*
* @return true if connection was successful
*/
bool connect();
/**
* Check if a keyboard is connected
*
* @returns true if a keyboard is connected
*/
bool connected();
/**
* Attach a callback called when a keyboard event is received
*
* @param ptr function pointer
*/
inline void attach(void (*ptr)(uint8_t key)) {
if (ptr != NULL) {
onKey = ptr;
}
}
/**
* Attach a callback called when a keyboard event is received
*
* @param ptr function pointer
*/
inline void attach(void (*ptr)(uint8_t keyCode, uint8_t modifier)) {
if (ptr != NULL) {
onKeyCode = ptr;
}
}
protected:
//From IUSBEnumerator
virtual void setVidPid(uint16_t vid, uint16_t pid);
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
virtual bool useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir); //Must return true if the endpoint will be used
private:
USBHost * host;
USBDeviceConnected * dev;
USBEndpoint * int_in;
uint8_t report[9];
int keyboard_intf;
bool keyboard_device_found;
bool dev_connected;
void rxHandler();
void (*onKey)(uint8_t key);
void (*onKeyCode)(uint8_t key, uint8_t modifier);
int report_id;
void init();
};
#endif
#endif
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