kopia lustrzana https://github.com/Hamlib/Hamlib
67 wiersze
1.7 KiB
C++
67 wiersze
1.7 KiB
C++
/* -*-C++-*-
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*******************************************************************************
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*
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* File: i2c.h
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* Description:
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*
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*******************************************************************************
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*/
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/*
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* Copyright 2001 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 2, 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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef _I2C_H_
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#define _I2C_H_
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#include "i2cio.h"
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/*!
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* \brief class for controlling i2c bus
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*/
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class i2c {
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public:
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/*! i2c does not control lifetime of a_io */
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i2c (i2cio *io);
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~i2c () {};
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//! \returns true iff successful
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bool write (int addr, const unsigned char *buf, int nbytes);
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//! \returns number of bytes read or -1 if error
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int read (int addr, unsigned char *buf, int max_bytes);
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private:
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void start ();
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void stop ();
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void write_bit (bool bit);
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bool write_byte (char byte);
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void set_sda (bool bit) { d_io->set_sda (bit); }
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void set_scl (bool bit) { d_io->set_scl (bit); }
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bool get_sda () { return d_io->get_sda (); }
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i2cio *d_io;
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};
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#endif /* _I2C_H_ */
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