80 lines
1.9 KiB
C
80 lines
1.9 KiB
C
/*
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module/am9513.h
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value added preprocessor definitions for Am9513 timer chip
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COMEDI - Linux Control and Measurement Device Interface
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Copyright (C) 1998 David A. Schleef <ds@schleef.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef _AM9513_H_
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#define _AM9513_H_
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#if 0
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/*
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* Before including this file, the following need to be defined:
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*/
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#define Am9513_8BITBUS xxx
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/* or */
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#define Am9513_16BITBUS xxx
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#define Am9513_output_control(a) xxx
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#define Am9513_input_status() xxx
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#define Am9513_output_data(a) xxx
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#define Am9513_input_data() xxx
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#endif
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/*
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*
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*/
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#ifdef Am9513_8BITBUS
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#define Am9513_write_register(reg, val) \
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do{ \
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Am9513_output_control(reg); \
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Am9513_output_data(val>>8); \
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Am9513_output_data(val&0xff); \
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}while (0)
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#define Am9513_read_register(reg, val) \
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do{ \
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Am9513_output_control(reg); \
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val=Am9513_input_data()<<8; \
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val|=Am9513_input_data(); \
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}while (0)
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#else /* Am9513_16BITBUS */
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#define Am9513_write_register(reg, val) \
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do{ \
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Am9513_output_control(reg); \
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Am9513_output_data(val); \
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}while (0)
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#define Am9513_read_register(reg, val) \
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do{ \
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Am9513_output_control(reg); \
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val=Am9513_input_data(); \
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}while (0)
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#endif
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#endif
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