forked from Imagelibrary/rtems
80 lines
2.4 KiB
C
80 lines
2.4 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
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/*
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* This file contains a typical set of register access routines which may be
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* used with the m48t08 chip if accesses to the chip are as follows:
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*
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* + registers are accessed as bytes
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* + registers are only byte-aligned (no address gaps)
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*
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* COPYRIGHT (c) 1989-1997.
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* On-Line Applications Research Corporation (OAR).
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <rtems.h>
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#include <libchip/rtc.h>
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#include <libchip/m48t08.h>
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#ifndef _M48T08_MULTIPLIER
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#define _M48T08_MULTIPLIER 1
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#define _M48T08_NAME(_X) _X
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#define _M48T08_TYPE uint8_t
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#endif
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#define CALCULATE_REGISTER_ADDRESS( _base, _reg ) \
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(_M48T08_TYPE *)((_base) + ((_reg) * _M48T08_MULTIPLIER ))
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/*
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* M48T08 Get Register Routine
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*/
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uint32_t _M48T08_NAME(m48t08_get_register)(
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uintptr_t ulCtrlPort,
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uint8_t ucRegNum
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)
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{
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_M48T08_TYPE *port;
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port = CALCULATE_REGISTER_ADDRESS( ulCtrlPort, ucRegNum );
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return *port;
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}
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/*
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* M48T08 Set Register Routine
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*/
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void _M48T08_NAME(m48t08_set_register)(
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uintptr_t ulCtrlPort,
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uint8_t ucRegNum,
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uint32_t ucData
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)
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{
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_M48T08_TYPE *port;
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port = CALCULATE_REGISTER_ADDRESS( ulCtrlPort, ucRegNum );
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*port = ucData;
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}
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