ds1672.h

ecos移植到R8H系列的源码。源码包来自http://www.cetoni.de/develop/develop_ecosh8s_en.html

#ifndef CYGONCE_DS1672_H
#define CYGONCE_DS1672_H
//==========================================================================
//
//      devs/wallclock/dallas/ds1672/current/include/ds1672.h
//
//      Dallas 1672 RTC register and bit definitions
//
//==========================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
// Copyright (C) 2003 Gary Thomas
//
// eCos is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 2 or (at your option) any later version.
//
// eCos 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 General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License along
// with eCos; if not, write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
//
// As a special exception, if other files instantiate templates or use macros
// or inline functions from this file, or you compile this file and link it
// with other works to produce a work based on this file, this file does not
// by itself cause the resulting work to be covered by the GNU General Public
// License. However the source code for this file must still be made available
// in accordance with section (3) of the GNU General Public License.
//
// This exception does not invalidate any other reasons why a work based on
// this file might be covered by the GNU General Public License.
//
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
// at http://sources.redhat.com/ecos/ecos-license/
// -------------------------------------------
//####ECOSGPLCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):   Uwe Kindler
// Contributors:Uwe Kindler
// Date:        2003-11-26
// Purpose:     EDOSK2674 I2C interface definitions for interfacing
//              the DS1672 RTC
//####DESCRIPTIONEND####
//==========================================================================


//===========================================================================
//                                DEFINES
//===========================================================================

//---------------------------------------------------------------------------
// definition for interfacing the DS1672 via I2C - we define the whole stuff
// here in the header file because the platforms have to provide the I2C
// interface functions and can use these definitions.
//
#define I2C_ACK              0     // acknowledge
#define I2C_NACK             1     // do not acknowledge

#define I2C_DS1672_ADDR      0xD0  // 7 bit DS1672 address = 1101000 (bit 7 - 1)
#define I2C_WRITE            0x00  // write bit 0 = write
#define I2C_READ             0x01  // write bit 1 = read


//---------------------------------------------------------------------------
// DS1672 registers
//
#define DS_REG_CNT_BYTE_1    0x00   // Counter Byte 1 - 4 (1 = LSB, 4 = MSB) 
#define DS_REG_CNT_BYTE_2    0x01
#define DS_REG_CNT_BYTE_3    0x02
#define DS_REG_CNT_BYTE_4    0x03
#define DS_REG_CTRL          0x04   // control register
#define DS_REG_TC            0x05   // trickle charger

#define DS_REG_FIRST         DS_REG_CNT_BYTE_1
#define DS_REG_LAST          DS_REG_TC

#define DS_REG_CTRL_OSC_EN   0x00  // enable oscillator in back-up mode
#define DS_REG_CTRL_OSC_DIS  0x80  // disable oscillator in back-up mode

#define DS_REGS_SIZE         0x06   // Size of register space 


//---------------------------------------------------------------------------
#endif // CYGONCE_DS1672_H