kopia lustrzana https://github.com/Hamlib/Hamlib
85 wiersze
2.2 KiB
C++
85 wiersze
2.2 KiB
C++
/* -*-C++-*-
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*******************************************************************************
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*
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* File: microtune_eval_board.cc
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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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#include "microtune_eval_board.h"
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#include "microtune_eval_board_defs.h"
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#include "ppio.h"
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#include "i2cio_pp.h"
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#include "i2c.h"
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microtune_eval_board::microtune_eval_board (int which_pp)
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{
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m_ppio = new ppio (which_pp);
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m_i2cio = new i2cio_pp (m_ppio);
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m_i2c = new i2c (m_i2cio);
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// disable upstream amplifier
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int t = m_ppio->read_data ();
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t &= ~(UT_DP_TX_ENABLE | UT_DP_TX_SDA | UT_DP_TX_SCL);
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t |= UT_DP_TX_AS;
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m_ppio->write_data (t);
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}
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microtune_eval_board::~microtune_eval_board ()
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{
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delete m_i2c;
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delete m_i2cio;
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delete m_i2c;
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}
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//! is the eval board present?
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bool
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microtune_eval_board::board_present_p ()
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{
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int t = m_ppio->read_status ();
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if ((t & UT_SP_SHOULD_BE_ZERO) != 0
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|| (t & UT_SP_SHOULD_BE_ONE) != UT_SP_SHOULD_BE_ONE)
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return false;
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// could also see if SCL is looped back or not, but that seems like overkill
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return true;
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}
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// returns true iff successful
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bool
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microtune_eval_board::i2c_write (int addr, const unsigned char *buf, int nbytes)
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{
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return m_i2c->write (addr, buf, nbytes);
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}
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// returns number of bytes read or -1 if error
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int
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microtune_eval_board::i2c_read (int addr, unsigned char *buf, int max_bytes)
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{
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return m_i2c->read (addr, buf, max_bytes);
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}
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