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63 lines
2.0 KiB
C
63 lines
2.0 KiB
C
/* Arduino I2C Library
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* Copyright (C) 2013 by William Greiman
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*
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* This file is part of the Arduino I2C Library
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*
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* This Library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with the Arduino I2C Library. If not, see
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* <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file I2cConstants.h
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* @brief Two Wire Interface constants.
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*
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* @defgroup twoWire I2C constants
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* @ingroup internals
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* @details Two Wire Interface library.
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* @{
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*/
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#ifndef I2cConstants_h
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#define I2cConstants_h
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#include <inttypes.h>
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/** Option argument for transfer() of transferContinue() to continue a
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an I2C operation. */
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const uint8_t I2C_CONTINUE = 0;
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/** Option argument for transfer() of transferContinue() to end a
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transfer with a STOP condition */
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const uint8_t I2C_STOP = 1;
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/** Option argument for transfer() of transferContinue() to end a
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transfer with a repeated START condition */
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const uint8_t I2C_REP_START = 2;
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/** Set I2C bus speed to 100 kHz. Used by TwiMaster class. */
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const uint8_t I2C_100KHZ = 0;
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/** Set I2C bus speed to 400 kHz. Used by TwiMaster class. */
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const uint8_t I2C_400KHZ = 1;
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/** Bit to OR with address for a read operation. */
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const uint8_t I2C_READ = 1;
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/** Bit to OR with address for write operation. */
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const uint8_t I2C_WRITE = 0;
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/** Disable internal pull-ups on SDA and SCL. Used by TwiMaster class. */
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const uint8_t I2C_NO_PULLUPS = 0;
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/** Enable internal pull-ups on SDA and SCL. Used by TwiMaster class. */
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const uint8_t I2C_INTERNAL_PULLUPS = 1;
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#endif // I2cConstants_h
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/** @} */ |