forked from Imagelibrary/rtems
61 lines
1.3 KiB
C
61 lines
1.3 KiB
C
/*
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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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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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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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