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64 lines
2.3 KiB
C
64 lines
2.3 KiB
C
/****************************************************************************
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*
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* Copyright (C) 2022 ModalAI, Inc. All rights reserved.
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*
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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
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* are met:
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*
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* 1. 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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* 2. 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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* 3. Neither the name PX4 nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* 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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****************************************************************************/
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#pragma once
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#include <stdint.h>
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#include <board_config.h>
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#if defined(CONFIG_I2C)
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__BEGIN_DECLS
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struct i2c_master_s;
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struct i2c_msg_s {
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uint32_t frequency;
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uint16_t addr;
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uint16_t flags;
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uint8_t *buffer;
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int length;
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};
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#define I2C_M_READ 0x0001
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#define I2C_TRANSFER(dev, msgs, count) px4_qurt_i2c_transfer(dev, msgs, count)
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struct i2c_master_s *px4_i2cbus_initialize(int bus);
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int px4_i2cbus_uninitialize(struct i2c_master_s *dev);
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int px4_qurt_i2c_transfer(struct i2c_master_s *dev, struct i2c_msg_s *msgs, unsigned count);
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__END_DECLS
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#endif /* CONFIG_I2C */
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