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/***************************************************************************
* Copyright (C) 2006 Nicolas Hadacek <hadacek@kde.org> *
* *
* 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 version 2 of the License, or *
* (at your option) any later version. *
***************************************************************************/
#include "direct_mem24.h"
#include <tqdatetime.h>
#include "common/global/global.h"
#include "common/common/misc.h"
Direct::Mem24DeviceSpecific::Mem24DeviceSpecific(::Programmer::Base &base)
: ::Programmer::Mem24DeviceSpecific(base)
{}
bool Direct::Mem24DeviceSpecific::setPowerOn()
{
hardware().setPin(Clock, Low);
hardware().setPin(DataOut, Low);
hardware().setPin(Vpp, Off);
if ( hardware().isGroundPin(Vdd) ) {
hardware().setPin(Clock, High);
Port::usleep(500000);
} else {
hardware().setPin(Vdd, On);
Port::usleep(10000);
}
return true;
}
bool Direct::Mem24DeviceSpecific::setPowerOff()
{
hardware().setPin(Clock, Low);
hardware().setPin(DataOut, Low);
hardware().setPin(Vpp, Off);
hardware().setPin(Vdd, Off);
Port::usleep(10000);
return true;
}
bool Direct::Mem24DeviceSpecific::verifyPresence()
{
if ( !start() ) return false;
bool acked;
if ( !writeByte(controlByte(0x0, Write), acked) ) return false;
if ( !acked ) {
log(Log::LineType::Error, i18n("Could not detect EEPROM"));
return false;
}
log(Log::LineType::Information, i18n("EEPROM detected"));
return stop();
}
uint Direct::Mem24DeviceSpecific::controlByte(uint address, Operation operation) const
{
uint cbyte = (operation==Write ? 0xA0 : 0xA1);
uint bsize = device().nbBytes() / device().nbBlocks();
uint block = address / bsize;
uint nbb = nbBits(device().nbBlocks()-1);
for (uint i=0; i<nbb; i++)
if ( block & (1<<i) ) cbyte |= 1 << (4-nbb+i);
return cbyte;
}
bool Direct::Mem24DeviceSpecific::setAddress(uint address)
{
log(Log::DebugLevel::Extra, TQString("set address %1").tqarg(toHexLabel(address, nbChars(NumberBase::Hex, address))));
if ( !start() ) return false;
uint bsize = device().nbBytes() / device().nbBlocks();
uint block = address / bsize;
log(Log::DebugLevel::Extra, TQString(" in block #%1/%2").tqarg(block).tqarg(device().nbBlocks()));
uint cbyte = controlByte(address, Write);
log(Log::DebugLevel::Max, TQString(" control byte is %1").tqarg(toHexLabel(cbyte, 2)));
if ( !writeByteAck(cbyte) ) return false;
uint nb = nbBytes(bsize-1);
for (int i=nb-1; i>=0; i--) {
uint add = (address >> 8*i) & 0xFF;
log(Log::DebugLevel::Max, TQString(" byte #%1: %2").tqarg(i).tqarg(toHexLabel(add, 2)));
if ( !writeByteAck(add) ) return false;
}
return true;
}
bool Direct::Mem24DeviceSpecific::doRead(Device::Array &data, const ::Programmer::VerifyData *vdata)
{
// sequential read: all device memory
if ( !setAddress(0x0) ) return false;
if ( !start() ) return false;
if ( !writeByteAck(controlByte(0x0, Read)) ) return false;
data.resize(device().nbBytes());
for (uint i=0; i<data.count()-1; i++) data[i] = readByte(Low);
data[data.count()-1] = readByte(High);
if (vdata) {
for (uint i=0; i<data.count(); i++)
if ( !verifyByte(i, data[i], *vdata) ) return false;
}
return stop();
}
bool Direct::Mem24DeviceSpecific::doWrite(const Device::Array &data)
{
TQTime time;
// page by page (page_size==1: byte by byte)
uint nbPages = device().nbBytes() / device().nbBytesPage();
for (uint i=0; i<nbPages; i++) {
log(Log::DebugLevel::Extra, TQString("write page #%1/%2").tqarg(i).tqarg(nbPages));
uint address = i * device().nbBytesPage();
// write bytes
if ( !setAddress(address) ) return false;
for (uint k=0; k<device().nbBytesPage(); k++)
if ( !writeByteAck(data[address+k]) ) return false;
if ( !stop() ) return false;
// poll
time.start();
for (;;) {
if ( !start() ) return false;
bool acked;
if ( !writeByte(controlByte(address, Write), acked) ) return false;
if (acked) break;
if ( time.elapsed()>200 ) { // 200 ms timeout
log(Log::LineType::Error, i18n("Timeout writing at address %1").tqarg(toHexLabel(address, nbChars(device().nbBytes()))));
return false;
}
}
}
return true;
}
void Direct::Mem24DeviceSpecific::set(State clock, State data)
{
hardware().setPin(Clock, clock);
hardware().setPin(DataOut, data);
Port::usleep(5); // #### needed ?
}
void Direct::Mem24DeviceSpecific::setData(State data)
{
set(Low, data);
set(High, data);
set(Low, data);
}
BitValue Direct::Mem24DeviceSpecific::readByte(State ack)
{
hardware().setRead();
set(Low, High);
BitValue b = 0;
for (uint i=0; i<8; i++) {
set(High, High);
b <<= 1;
if ( hardware().readBit() ) b |= 0x1;
set(Low, High);
}
hardware().setWrite();
setData(ack);
return b;
}
bool Direct::Mem24DeviceSpecific::writeByteAck(BitValue value)
{
bool acked;
if ( !writeByte(value, acked) ) return false;
if (!acked) {
log(Log::LineType::Error, i18n("Acknowledge bit incorrect"));
return false;
}
return true;
}
bool Direct::Mem24DeviceSpecific::writeByte(BitValue value, bool &acked)
{
Q_ASSERT( value<=0xFF );
hardware().setWrite();
set(Low, Low);
for (int i=7; i>=0; i--) setData(value.bit(i) ? High : Low);
hardware().setRead();
set(Low, High);
set(High, High);
acked = !hardware().readBit();
hardware().setWrite();
set(Low, High);
return true;
}
bool Direct::Mem24DeviceSpecific::start()
{
hardware().setWrite();
set(Low, High);
set(High, High);
set(High, Low);
set(Low, Low);
return true;
}
bool Direct::Mem24DeviceSpecific::stop()
{
hardware().setWrite();
set(Low, Low);
set(High, Low);
set(High, High);
set(Low, High);
return true;
}
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