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