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nussgipfel |
/* -*- c++ -*- */
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/*
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* Copyright 2003 Free Software Foundation, Inc.
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*
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* This file is part of GNU Radio
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*
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* GNU Radio 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, or (at your option)
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* any later version.
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*
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* GNU Radio 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 GNU Radio; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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/************************************************************************/
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/** \file i2c.h
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*************************************************************************
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* \brief read and write functions for the i2c bus
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*
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* \author GNU Radio
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*
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* \warning This functions are blocking functions, so you have to wait
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* until the transfer is finished!
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*/
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#ifndef _I2C_H_
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#define _I2C_H_
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/**
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* i2c read function. reads a block of data with the length len
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*
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* \param[in] addr device adress on the i2c bus
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* \param[out] buf result buffer, contains the readed data when successful
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* \param[in] len length of the block to read
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* \return returns non-zero if successful, else 0
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*/
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unsigned char i2c_read (unsigned char addr, xdata unsigned char *buf, unsigned char len);
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/**
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* i2c write function. writes a block of data with the length len
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*
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* \param[in] addr device adress on the i2c bus
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* \param[in] buf data buffer, contains the data to be written
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* \param[in] len length of the block to write
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* \return returns non-zero if successful, else 0
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*/
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unsigned char i2c_write (unsigned char addr, xdata const unsigned char *buf, unsigned char len);
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#endif /* _I2C_H_ */
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