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76 lines
2.6 KiB
76 lines
2.6 KiB
/*
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Copyright (C) 2004 by Jasem Mutlaq
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _PPort_hpp_
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#define _PPort_hpp_
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class port_t;
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/** To access and share the parallel port
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between severa objects. */
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class PPort {
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public:
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PPort();
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PPort(int ioPort);
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/** set the ioport associated to the // port.
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\return true if the binding was possible
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*/
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bool setPort(int ioPort);
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/** set a data bit of the // port.
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\return false if IO port not set, or bit not registered by ID.
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\param ID the identifier used to register the bit
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\param stat the stat wanted for the given bit
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\param bit the bit to set. They are numbered from 0 to 7.
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*/
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bool setBit(const void * ID,int bit,bool stat);
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/** register a bit for object ID.
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\param ID the identifier used to register the bit it should be the 'this' pointer.
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\param bit the bit of the // port to register
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\return false if the bit is allready register with an
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other ID, or if the // port is not initialised.
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*/
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bool registerBit(const void * ID,int bit);
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/** release a bit.
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\param ID the identifier used to register the bit
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\param bit the bit to register.
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\return false if the bit was not registered by ID or
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if the if the // port is not initialised.
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*/
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bool unregisterBit(const void * ID,int bit);
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/** test if a bit is registerd.
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\param ID the identifier used to register the bit
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\param bit the bit to test.
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\return false if the bit was not registered by ID or
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if the if the // port is not initialised.
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*/
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bool isRegisterBit(const void * ID,int bit) const;
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/** set the bits off the // port according to previous call to setBit().
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*/
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bool commit();
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private:
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void reset();
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unsigned char bitArray;
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const void * assignedBit[8];
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port_t * currentPort;
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};
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#endif
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