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-rw-r--r--tmk_core/protocol/xt.h71
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diff --git a/tmk_core/protocol/xt.h b/tmk_core/protocol/xt.h
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+/*
+Copyright 2018 Jun WAKO <wakojun@gmail.com>
+Copyright 2016 Ethan Apodaca <papodaca@gmail.com>
+
+This software is licensed with a Modified BSD License.
+All of this is supposed to be Free Software, Open Source, DFSG-free,
+GPL-compatible, and OK to use in both free and proprietary applications.
+Additions and corrections to this file are welcome.
+
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in
+ the documentation and/or other materials provided with the
+ distribution.
+
+* Neither the name of the copyright holders nor the names of
+ contributors may be used to endorse or promote products derived
+ from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef XT_H
+#define XT_H
+
+#define XT_DATA_IN() do { \
+ XT_DATA_DDR &= ~(1<<XT_DATA_BIT); \
+ XT_DATA_PORT |= (1<<XT_DATA_BIT); \
+} while (0)
+
+#define XT_DATA_READ() (XT_DATA_PIN&(1<<XT_DATA_BIT))
+
+#define XT_DATA_LO() do { \
+ XT_DATA_PORT &= ~(1<<XT_DATA_BIT); \
+ XT_DATA_DDR |= (1<<XT_DATA_BIT); \
+} while (0)
+
+
+#define XT_CLOCK_IN() do { \
+ XT_CLOCK_DDR &= ~(1<<XT_CLOCK_BIT); \
+ XT_CLOCK_PORT |= (1<<XT_CLOCK_BIT); \
+} while (0)
+
+#define XT_CLOCK_READ() (XT_CLOCK_PIN&(1<<XT_CLOCK_BIT))
+
+#define XT_CLOCK_LO() do { \
+ XT_CLOCK_PORT &= ~(1<<XT_CLOCK_BIT); \
+ XT_CLOCK_DDR |= (1<<XT_CLOCK_BIT); \
+} while (0)
+
+
+void xt_host_init(void);
+uint8_t xt_host_recv(void);
+
+#endif