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/*
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This file is part of CanFestival, a library implementing CanOpen Stack.
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Copyright (C): Edouard TISSERANT and Francis DUPIN
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See COPYING file for copyrights details.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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Variables to access to the io_ports
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*/
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#ifndef __PORTS_ACCESS__
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#define __PORTS_ACCESS__
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/*
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By default the address is 0X0000 on HCS12.
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But the ports can be remaped. See the file ports.h
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*/
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extern volatile unsigned char _io_ports[];
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/* To use for a 8 bits access */
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#define IO_PORTS_8(adr) \
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_io_ports[adr]
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/* To use for a 16 bits access */
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/* Example : IO_PORTS_16(CAN0IDAR1)= 0xABCD;
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will put AB at @CAN0IDAR1 and CD at @CAN0IDAR1 + 1
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*/
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#define IO_PORTS_16(adr) \
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*((unsigned volatile short*) (_io_ports + (adr)))
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#endif
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