File content as of revision 17:b646b1e3970b:

/******************************************************************//**
* Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Except as contained in this notice, the name of Maxim Integrated
* Products, Inc. shall not be used except as stated in the Maxim Integrated
* Products, Inc. Branding Policy.
*
* The mere transfer of this software does not imply any licenses
* of trade secrets, proprietary technology, copyrights, patents,
* trademarks, maskwork rights, or any other form of intellectual
* property whatsoever. Maxim Integrated Products, Inc. retains all
* ownership rights.
**********************************************************************/


#ifndef ONEWIREMASTER_H
#define ONEWIREMASTER_H


#include "mbed.h"
#include "OneWireInterface.h"


//This class is an abstract class type that can not be instaniated

//OneWireMaster is the first derived class of OneWireInterface that
//defines implementations of common functions between masters and adds
//support for CRC16.

//OneWireMaster should be inherited by your OW master declaration


class OneWireMaster: public OneWireInterface
{
    public:
    
    static uint16_t calculateCRC16(uint16_t CRC16, uint16_t data);
    
    static uint16_t calculateCRC16(const uint8_t * data, size_t data_offset, size_t data_len, uint16_t crc);
    
    //Part of OneWireInterface that should only be implemented once
    //See OneWireInterface.h for documentation
    
    virtual OneWireInterface::CmdResult OWWriteBit(uint8_t sendbit);
    
    virtual OneWireInterface::CmdResult OWReadBit(uint8_t & recvbit);

    virtual OneWireInterface::CmdResult OWTouchByte(uint8_t & sendrecvbyte);

    virtual OneWireInterface::CmdResult OWBlock(uint8_t *tran_buf, uint8_t tran_len);

    virtual OneWireInterface::CmdResult OWFirst(RomId & romId);

    virtual OneWireInterface::CmdResult OWNext(RomId & romId);

    virtual OneWireInterface::CmdResult OWVerify(const RomId & romId);

    virtual void OWTargetSetup(RomId & romId);

    virtual void OWFamilySkipSetup(void);
    
    virtual OneWireInterface::CmdResult OWReadROM(RomId & romId);
    
    virtual OneWireInterface::CmdResult OWSkipROM(void);
    
    virtual OneWireInterface::CmdResult OWMatchROM(const RomId & romId);
    
    virtual OneWireInterface::CmdResult OWOverdriveSkipROM(void);
    
    virtual OneWireInterface::CmdResult OWOverdriveMatchROM(const RomId & romId);
    
    virtual OneWireInterface::CmdResult OWResume(void);
    
    protected:
    
    // Search state
    uint8_t _last_discrepancy;
    uint8_t _last_family_discrepancy;
    uint8_t _last_device_flag;
    uint8_t _crc8;   
    
    static const uint16_t _oddparity[16];
};





#endif /*ONEWIREMASTERSSHARED_H*/