/*
ADNS2051.cpp - Part of optical mouse sensor library for Arduino
Copyright (c) 2008 Martijn The. All right reserved.
http://www.martijnthe.nl/
Based on sketches by Beno�t Rousseau.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/******************************************************************************
* Includes
******************************************************************************/
#include "WConstants.h"
#include "OptiMouse.h"
#include "ADNS2051.h"
/******************************************************************************
* Definitions
******************************************************************************/
#define Delta_Y 0x04
#define Delta_X 0x03
#define Motion_Status 0x02
#define Mask_Motion 0x80
#define Mask_DYOVF 0x10
#define Mask_DXOVF 0x08
/******************************************************************************
* Constructors
******************************************************************************/
ADNS2051::ADNS2051(uint8_t sclkPin, uint8_t sdioPin) : OptiMouse::OptiMouse(sclkPin, sdioPin)
{
}
/******************************************************************************
* User API
******************************************************************************/
void ADNS2051::updateStatus(void)
{
_status = readRegister(Motion_Status);
}
signed char ADNS2051::dx(void)
{
return (signed char) readRegister(Delta_X);
}
signed char ADNS2051::dy(void)
{
return (signed char) readRegister(Delta_Y);
}
uint8_t ADNS2051::motion() const
{
return (uint8_t) (_status & Mask_Motion) == Mask_Motion;
}
uint8_t ADNS2051::dxOverflow() const
{
return (uint8_t) (_status & Mask_DXOVF) == Mask_DXOVF;
}
uint8_t ADNS2051::dyOverflow() const
{
return (uint8_t) (_status & Mask_DYOVF) == Mask_DYOVF;
}
// Private Methods /////////////////////////////////////////////////////////////
