public UInt32 peek(UInt32 address)
{
if (!ValidMemory.ValidAddress(address))
{
return(0);
}
//address will be alligned to 4
UInt32 paddress = address & 0xFFFFFFFC;
//Create a memory stream for the actual dump
MemoryStream stream = new MemoryStream();
//make sure to not send data to the output
GeckoProgress oldUpdate = this.PChunkUpdate;
this.PChunkUpdate = null;
try
{
//dump data
this.Dump(paddress, paddress + 4, stream);
//go to beginning
stream.Seek(0, SeekOrigin.Begin);
Byte[] buffer = new Byte[4];
stream.Read(buffer, 0, 4);
//Read buffer
UInt32 result = BitConverter.ToUInt32(buffer, 0);
//Swap to machine endianness and return
result = ByteSwap.Swap(result);
return(result);
}
finally
{
this.PChunkUpdate = oldUpdate;
//make sure the Stream is properly closed
stream.Close();
}
}
public void Dump(UInt32 startdump, UInt32 enddump, Stream[] saveStream)
{
//Reset connection
this.InitGecko();
if (ValidMemory.RangeCheckId(startdump) != ValidMemory.RangeCheckId(enddump))
{
enddump = ValidMemory.ValidAreas[ValidMemory.RangeCheckId(startdump)].High;
}
if (!ValidMemory.ValidAddress(startdump))
{
return;
}
//How many bytes of data have to be transferred
UInt32 memlength = enddump - startdump;
//How many chunks do I need to split this data into
//How big ist the last chunk
UInt32 fullchunks = memlength / packetsize;
UInt32 lastchunk = memlength % packetsize;
//How many chunks do I need to transfer
UInt32 allchunks = fullchunks;
if (lastchunk > 0)
{
allchunks++;
}
UInt64 GeckoMemRange = ByteSwap.Swap((UInt64)(((UInt64)startdump << 32) + ((UInt64)enddump)));
if (this.GeckoWrite(BitConverter.GetBytes(cmd_readmem), 1) != FTDICommand.CMD_OK)
{
throw new ETCPGeckoException(ETCPErrorCode.FTDICommandSendError);
}
//Read reply - expcecting GCACK -- nope, too slow, TCP is reliable!
Byte retry = 0;
//Now let's send the dump information
if (this.GeckoWrite(BitConverter.GetBytes(GeckoMemRange), 8) != FTDICommand.CMD_OK)
{
throw new ETCPGeckoException(ETCPErrorCode.FTDICommandSendError);
}
//We start with chunk 0
UInt32 chunk = 0;
retry = 0;
// Reset cancel flag
bool done = false;
this.CancelDump = false;
Byte[] buffer = new Byte[packetsize]; //read buffer
while (chunk < fullchunks && !done)
{
//No output yet availible
this.SendUpdate(startdump + chunk * packetsize, chunk, allchunks, chunk * packetsize, memlength, retry == 0, true);
//Set buffer
Byte[] response = new Byte[1];
if (this.GeckoRead(response, 1) != FTDICommand.CMD_OK)
{
//Major fail, give it up
this.GeckoWrite(BitConverter.GetBytes(GCFAIL), 1);
throw new ETCPGeckoException(ETCPErrorCode.FTDIReadDataError);
}
Byte reply = response[0];
if (reply == BlockZero)
{
for (int i = 0; i < packetsize; i++)
{
buffer[i] = 0;
}
}
else
{
FTDICommand returnvalue = this.GeckoRead(buffer, packetsize);
if (returnvalue == FTDICommand.CMD_ResultError)
{
retry++;
if (retry >= 3)
{
//Give up, too many retries
this.GeckoWrite(BitConverter.GetBytes(GCFAIL), 1);
throw new ETCPGeckoException(ETCPErrorCode.TooManyRetries);
}
//GeckoWrite(BitConverter.GetBytes(GCRETRY), 1);
continue;
}
else if (returnvalue == FTDICommand.CMD_FatalError)
{
//Major fail, give it up
this.GeckoWrite(BitConverter.GetBytes(GCFAIL), 1);
throw new ETCPGeckoException(ETCPErrorCode.FTDIReadDataError);
}
}
//write received package to output stream
foreach (Stream stream in saveStream)
{
stream.Write(buffer, 0, ((Int32)packetsize));
}
//reset retry counter
retry = 0;
//next chunk
chunk++;
if (!this.CancelDump)
{
//ackowledge package -- nope, too slow, TCP is reliable!
//GeckoWrite(BitConverter.GetBytes(GCACK), 1);
}
else
{
// User requested a cancel
this.GeckoWrite(BitConverter.GetBytes(GCFAIL), 1);
done = true;
}
}
//Final package?
while (!done && lastchunk > 0)
{
//No output yet availible
this.SendUpdate(startdump + chunk * packetsize, chunk, allchunks, chunk * packetsize, memlength, retry == 0, true);
//Set buffer
// buffer = new Byte[lastchunk];
Byte[] response = new Byte[1];
if (this.GeckoRead(response, 1) != FTDICommand.CMD_OK)
{
//Major fail, give it up
this.GeckoWrite(BitConverter.GetBytes(GCFAIL), 1);
throw new ETCPGeckoException(ETCPErrorCode.FTDIReadDataError);
}
Byte reply = response[0];
if (reply == BlockZero)
{
for (int i = 0; i < lastchunk; i++)
{
buffer[i] = 0;
}
}
else
{
FTDICommand returnvalue = this.GeckoRead(buffer, lastchunk);
if (returnvalue == FTDICommand.CMD_ResultError)
{
retry++;
if (retry >= 3)
{
//Give up, too many retries
this.GeckoWrite(BitConverter.GetBytes(GCFAIL), 1);
throw new ETCPGeckoException(ETCPErrorCode.TooManyRetries);
}
//GeckoWrite(BitConverter.GetBytes(GCRETRY), 1);
continue;
}
else if (returnvalue == FTDICommand.CMD_FatalError)
{
//Major fail, give it up
this.GeckoWrite(BitConverter.GetBytes(GCFAIL), 1);
throw new ETCPGeckoException(ETCPErrorCode.FTDIReadDataError);
}
}
//write received package to output stream
foreach (Stream stream in saveStream)
{
stream.Write(buffer, 0, ((Int32)lastchunk));
}
//reset retry counter
retry = 0;
//cancel while loop
done = true;
//ackowledge package -- nope, too slow, TCP is reliable!
//GeckoWrite(BitConverter.GetBytes(GCACK), 1);
}
this.SendUpdate(enddump, allchunks, allchunks, memlength, memlength, true, true);
}