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/****************************************************************************
*
* Copyright (c) 2013 PX4 Development Team. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name PX4 nor the names of its 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.
*
****************************************************************************/
/**
* @file interface.h
*
* PX4IO interface classes.
*/
#include <nuttx/config.h>
#include <stdint.h>
class PX4IO_interface
{
public:
/**
* Check that the interface initialised OK.
*
* Does not check that communication has been established.
*/
virtual bool ok() = 0;
/**
* Set PX4IO registers.
*
* @param page The register page to write
* @param offset Offset of the first register to write
* @param values Pointer to values to write
* @param num_values The number of values to write
* @return Zero on success.
*/
virtual int set_reg(uint8_t page, uint8_t offset, const uint16_t *values, unsigned num_values) = 0;
/**
* Get PX4IO registers.
*
* @param page The register page to read
* @param offset Offset of the first register to read
* @param values Pointer to store values read
* @param num_values The number of values to read
* @return Zero on success.
*/
virtual int get_reg(uint8_t page, uint8_t offset, uint16_t *values, unsigned num_values) = 0;
};
extern PX4IO_interface *io_i2c_interface(int bus, uint8_t address);
extern PX4IO_interface *io_serial_interface(int port);
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