74 lines
2.8 KiB
C
74 lines
2.8 KiB
C
/*
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Copyright 2018 Jun WAKO <wakojun@gmail.com>
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Copyright 2016 Ethan Apodaca <papodaca@gmail.com>
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This software is licensed with a Modified BSD License.
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All of this is supposed to be Free Software, Open Source, DFSG-free,
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GPL-compatible, and OK to use in both free and proprietary applications.
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Additions and corrections to this file are welcome.
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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 are met:
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* 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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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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* Neither the name of the copyright holders nor the names of
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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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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#ifndef XT_H
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#define XT_H
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#define XT_DATA_IN() \
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do { \
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XT_DATA_DDR &= ~(1 << XT_DATA_BIT); \
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XT_DATA_PORT |= (1 << XT_DATA_BIT); \
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} while (0)
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#define XT_DATA_READ() (XT_DATA_PIN & (1 << XT_DATA_BIT))
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#define XT_DATA_LO() \
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do { \
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XT_DATA_PORT &= ~(1 << XT_DATA_BIT); \
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XT_DATA_DDR |= (1 << XT_DATA_BIT); \
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} while (0)
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#define XT_CLOCK_IN() \
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do { \
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XT_CLOCK_DDR &= ~(1 << XT_CLOCK_BIT); \
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XT_CLOCK_PORT |= (1 << XT_CLOCK_BIT); \
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} while (0)
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#define XT_CLOCK_READ() (XT_CLOCK_PIN & (1 << XT_CLOCK_BIT))
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#define XT_CLOCK_LO() \
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do { \
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XT_CLOCK_PORT &= ~(1 << XT_CLOCK_BIT); \
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XT_CLOCK_DDR |= (1 << XT_CLOCK_BIT); \
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} while (0)
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void xt_host_init(void);
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uint8_t xt_host_recv(void);
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#endif
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