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//=========================================================================//
// //
// PonyProg - Serial Device Programmer //
// //
// Copyright (C) 1997-2025 Claudio Lanconelli //
// //
// https://github.com/lancos/ponyprog //
// //
//-------------------------------------------------------------------------//
// //
// This program is free software; you can redistribute it and/or //
// modify it under the terms of the GNU General Public License //
// as published by the Free Software Foundation; either version2 of //
// the License, or (at your option) any later version. //
// //
// This program is distributed in the hope that it will be useful, //
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU //
// General Public License for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program (see LICENSE); if not, write to the //
// Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. //
// //
//=========================================================================//
#include "types.h"
#include "globals.h"
#include "spi-bus.h"
#include "errcode.h"
#include "e2cmdw.h"
#include <QDebug>
#include <QtCore>
SPIBus::SPIBus(BusInterface *ptr, bool cpha, bool cpol)
: BusIO(ptr),
m_cpol(cpol),
m_cpha(cpha)
{
}
SPIBus::~SPIBus()
{
}
void SPIBus::SetDelay()
{
int val = E2Profile::GetSPISpeed();
int n;
switch (val)
{
case TURBO:
n = 0; // as fast as your PC can
break;
case FAST:
n = 1;
break;
case SLOW:
n = 10;
break;
case VERYSLOW:
n = 80;
break;
case ULTRASLOW:
n = 1000;
break;
default:
n = 5; //Default (< 100KHz)
break;
}
Q_CHECK_PTR(busI);
busI->SetDelay(n);
qDebug() << Q_FUNC_INFO << "() = " << n;
}
int SPIBus::SendDataBit(int b)
{
int err = OK;
busI->xferBit(err, b, GetMode() | xMODE_WRONLY);
return err;
}
int SPIBus::RecDataBit()
{
int err = OK;
int rv = busI->xferBit(err, 1, GetMode() | xMODE_RDONLY);
if (err == OK)
{
return rv;
}
else
{
return err;
}
}
int SPIBus::SendDataByte(int by)
{
int err = OK;
busI->xferByte(err, by, GetMode() | xMODE_WRONLY);
return err;
}
int SPIBus::RecDataByte()
{
int err = OK;
int rv = busI->xferByte(err, 0xff, GetMode() | xMODE_RDONLY);
if (err == OK)
{
return rv;
}
else
{
return err;
}
}
int SPIBus::Reset(void)
{
qDebug() << Q_FUNC_INFO << "IN";
SetDelay();
clearSCK(); // AVR datasheet
setMOSI(); // the datasheet doesn't specify, but with SIProg we need to provide power from at least one line (MOSI while SCK and RESET are low)
WaitMsec(20);
ClearReset(); //One pulse on the reset (datasheet AVR)
WaitMsec(E2Profile::GetSPIResetPulse()); //AppNote AVR910 suggest >100 msec
SetReset();
WaitMsec(E2Profile::GetSPIDelayAfterReset());
qDebug() << Q_FUNC_INFO << "OUT";
return OK;
}
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