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//=========================================================================//
// //
// PonyProg - Serial Device Programmer //
// //
// Copyright (C) 1997-2021 Claudio Lanconelli //
// //
// http://ponyprog.sourceforge.net //
// //
//-------------------------------------------------------------------------//
// //
// 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 "at250bus.h"
#include "errcode.h"
#include <QDebug>
#include <QtCore>
At250Bus::At250Bus(BusInterface *ptr)
: SPIBus(ptr),
WriteEnable(0x06),
WriteDisable(0x04),
ReadStatus(0x05),
WriteStatus(0x01),
ReadData(0x03),
WriteData(0x02),
NotReadyFlag(1),
WenFlag(2),
BPFlags(8 + 4),
loop_timeout(5000)
{
}
void At250Bus::EndCycle()
{
//WaitUsec(1);
setNCS();
ShotDelay(2);
clearNCS();
ShotDelay();
}
int At250Bus::ReadEEPByte(int addr)
{
int rv;
SendDataByte(ReadData | (((addr >> 8) & 1) << 3));
SendDataByte(addr);
ShotDelay();
rv = RecDataByte();
EndCycle();
return rv;
}
void At250Bus::WriteEEPByte(int addr, int data)
{
SendDataByte(WriteData | (((addr >> 8) & 1) << 3));
SendDataByte(addr);
SendDataByte(data);
EndCycle();
}
int At250Bus::ReadEEPStatus()
{
int rv;
SendDataByte(ReadStatus);
rv = RecDataByte();
EndCycle();
return rv;
}
int At250Bus::WriteEEPStatus(int data)
{
SendDataByte(WriteEnable);
EndCycle();
SendDataByte(WriteStatus);
SendDataByte(data);
EndCycle();
return 0;
}
int At250Bus::WaitEndOfWrite(int timeout) // 07/08/99
{
if (timeout <= 0)
{
timeout = loop_timeout;
}
int k;
for (k = timeout; k > 0 && (ReadEEPStatus() & NotReadyFlag); k--)
{
WaitUsec(50);
}
return (k != 0);
}
int At250Bus::Reset(void)
{
qDebug() << Q_FUNC_INFO;
SPIBus::Reset();
ShotDelay();
//SendDataByte(WriteEnable);
//EndCycle();
return OK;
}
long At250Bus::Read(int addr, uint8_t *data, long length, int page_size)
{
qDebug() << Q_FUNC_INFO << "(" << (hex) << addr << ", " << data << ", " << (dec) << length << ")";
long len;
ReadStart();
for (len = 0; len < length; len++)
{
*data++ = (uint8_t)ReadEEPByte(addr++);
if ((len % 10) == 0)
{
if (ReadProgress(len * 100 / length))
{
break;
}
}
}
WaitMsec(1); //Flush
ReadEnd();
qDebug() << Q_FUNC_INFO << "=" << len;
return len;
}
long At250Bus::Write(int addr, uint8_t const *data, long length, int page_size)
{
long len;
WriteStart();
WriteEEPStatus(0);
// 07/08/99 *** bug fix suggested by Atmel Product engineer
if (!WaitEndOfWrite())
{
return 0;
}
for (len = 0; len < length; len++)
{
SendDataByte(WriteEnable);
EndCycle();
WriteEEPByte(addr++, *data++);
if (!WaitEndOfWrite())
{
return 0; //Must return 0, because > 0 (and != length) means "Abort by user"
}
if ((len & 1))
{
if (WriteProgress(len * 100 / length))
{
break;
}
}
}
WaitMsec(1); //Flush
WriteEnd();
return len;
}
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