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/* Copyright (C) 2013 Kristian Lauszus, TKJ Electronics. All rights reserved.
This software may be distributed and modified under the terms of the GNU
General Public License version 2 (GPL2) as published by the Free Software
Foundation and appearing in the file GPL2.TXT included in the packaging of
this file. Please note that GPL2 Section 2[b] requires that all works based
on this software must also be made publicly available under the terms of
the GPL2 ("Copyleft").
Contact information
-------------------
Kristian Lauszus, TKJ Electronics
Web : http://www.tkjelectronics.com
e-mail : kristianl@tkjelectronics.com
*/
#ifndef _bthid_h_
#define _bthid_h_
#include "BTD.h"
#include "hidboot.h"
#define KEYBOARD_PARSER_ID 0
#define MOUSE_PARSER_ID 1
#define NUM_PARSERS 2
/** This BluetoothService class implements support for Bluetooth HID devices. */
class BTHID : public BluetoothService {
public:
/**
* Constructor for the BTHID class.
* @param p Pointer to the BTD class instance.
* @param pair Set this to true in order to pair with the device. If the argument is omitted then it will not pair with it. One can use ::PAIR to set it to true.
* @param pin Write the pin to BTD#btdPin. If argument is omitted, then "0000" will be used.
*/
BTHID(BTD *p, bool pair = false, const char *pin = "0000");
/** @name BluetoothService implementation */
/** Used this to disconnect the devices. */
void disconnect();
/**@}*/
/**
* Get HIDReportParser.
* @param id ID of parser.
* @return Returns the corresponding HIDReportParser. Returns NULL if id is not valid.
*/
HIDReportParser *GetReportParser(uint8_t id) {
if (id >= NUM_PARSERS)
return NULL;
return pRptParser[id];
};
/**
* Set HIDReportParser to be used.
* @param id Id of parser.
* @param prs Pointer to HIDReportParser.
* @return Returns true if the HIDReportParser is set. False otherwise.
*/
bool SetReportParser(uint8_t id, HIDReportParser *prs) {
if (id >= NUM_PARSERS)
return false;
pRptParser[id] = prs;
return true;
};
/**
* Set HID protocol mode.
* @param mode HID protocol to use. Either HID_BOOT_PROTOCOL or HID_RPT_PROTOCOL.
*/
void setProtocolMode(uint8_t mode) {
protocolMode = mode;
};
/**
* Used to set the leds on a keyboard.
* @param data See KBDLEDS in hidboot.h
*/
void setLeds(uint8_t data);
/** True if a device is connected */
bool connected;
/** Call this to start the paring sequence with a device */
void pair(void) {
if(pBtd)
pBtd->pairWithHID();
};
protected:
/** @name BluetoothService implementation */
/**
* Used to pass acldata to the services.
* @param ACLData Incoming acldata.
*/
void ACLData(uint8_t* ACLData);
/** Used to run part of the state machine. */
void Run();
/** Use this to reset the service. */
void Reset();
/**
* Called when a device is successfully initialized.
* Use attachOnInit(void (*funcOnInit)(void)) to call your own function.
* This is useful for instance if you want to set the LEDs in a specific way.
*/
void onInit() {
if(pFuncOnInit)
pFuncOnInit(); // Call the user function
OnInitBTHID();
};
/**@}*/
/** @name Overridable functions */
/**
* Used to parse Bluetooth HID data to any class that inherits this class.
* @param len The length of the incoming data.
* @param buf Pointer to the data buffer.
*/
virtual void ParseBTHIDData(uint8_t len, uint8_t *buf) {
return;
};
/** Called when a device is connected */
virtual void OnInitBTHID() {
return;
};
/** Used to reset any buffers in the class that inherits this */
virtual void ResetBTHID() {
return;
}
/**@}*/
/** L2CAP source CID for HID_Control */
uint8_t control_scid[2];
/** L2CAP source CID for HID_Interrupt */
uint8_t interrupt_scid[2];
private:
HIDReportParser *pRptParser[NUM_PARSERS]; // Pointer to HIDReportParsers.
/** Set report protocol. */
void setProtocol();
uint8_t protocolMode;
void L2CAP_task(); // L2CAP state machine
bool activeConnection; // Used to indicate if it already has established a connection
/* Variables used for L2CAP communication */
uint8_t control_dcid[2]; // L2CAP device CID for HID_Control - Always 0x0070
uint8_t interrupt_dcid[2]; // L2CAP device CID for HID_Interrupt - Always 0x0071
uint8_t l2cap_state;
};
#endif
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