38 lines
1.3 KiB
C
38 lines
1.3 KiB
C
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2008 by Rob Purchase
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef I2C_TARGET_H
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#define I2C_TARGET_H
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/* Definitions for the D2 I2C bus */
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#define SCL_BIT (1<<0)
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#define SDA_BIT (1<<1)
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#define SCL (GPIOA & SCL_BIT)
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#define SCL_HI GPIOA_SET = SCL_BIT
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#define SCL_LO GPIOA_CLEAR = SCL_BIT
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#define SDA (GPIOA & SDA_BIT)
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#define SDA_HI GPIOA_SET = SDA_BIT
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#define SDA_LO GPIOA_CLEAR = SDA_BIT
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#define SDA_INPUT GPIOA_DIR &= ~SDA_BIT
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#define SDA_OUTPUT GPIOA_DIR |= SDA_BIT
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#endif /* I2C_TARGET_H */
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