protected override bool StateMachine_TransferPacket(StepDefinition currentStep)
{
// check for connection
if (!_comPortRef.IsConnected)
{
SetTransferState(TransferState.FailedConnection);
MachineFunctions.JumpToLast(currentStep);
return(StepReturn.JumpCommandUsed);
}
// update the users with % complete
RunPercentUpdate();
if (_payloadPage != _currentPage)
{
// calculate read length
_readLength = PageSize * PagesTransmitted;
if (_pointer + _readLength > _workingFile.Count)
{
_readLength = _workingFile.Count - _pointer;
}
// load the array into a list with _page information
_payload.Clear();
_payload.AddRange(DataConversions.ConvertUInt16ToList(_currentPage));
_payload.AddRange(_workingFile.GetRange(_pointer, _readLength));
_payload.AddRange(Checksums.Fletcher16(_payload));
// add escapes to the payload
_payload.EscapeList();
// add the command to the front of the payload
_payload.InsertRange(0, Encoding.ASCII.GetBytes(_command));
// update the housekeeping variables
_payloadPage = _currentPage;
}
// send the data
var returnString = _comPortRef.SendCommand(_payload, 1).FirstOrDefault();
if (returnString?.Contains($"{_command}{_currentPage},{_readLength}") == true)
{
// housekeeping variables
_pointer += _readLength;
_currentPage += PagesTransmitted;
// we had a good transfer, determine next step
if (_pointer == _workingFile.Count)
{
// we are at the end of the file, so tell the system we are done
_payload.Clear();
_payload.AddRange(DataConversions.ConvertUInt16ToList(0xFFFF));
_payload.AddRange(Checksums.Fletcher16(_payload));
// add escapes to the payload
_payload.EscapeList();
// add the command to the front of the payload
_payload.InsertRange(0, Encoding.ASCII.GetBytes(_command));
// send command
_comPortRef.SendCommand(_payload, 1);
// let the user know
SetTransferState(TransferState.Succeeded);
// move to end
MachineFunctions.JumpToLast(currentStep);
return(StepReturn.JumpCommandUsed);
}
// not done with file, so send the next packet
return(StepReturn.RepeatStep);
}
// switch to deal with packet error types
switch (returnString)
{
case "&@f!c":
// checksum error
break;
case "&@f!w":
// flash write error
break;
case "&@f!r":
// rebooting unit
break;
case "":
// lost connection
break;
default:
break;
}
// process the missed packet count
return(ProcessMissedPage(_currentPage));
}
/// <summary>
/// A function to upload an INI file to a unit for quick configuration.
/// </summary>
/// <param name="stream">The stream to upload to the unit.</param>
/// <param name="message">A string containing any status messages from the uploader.</param>
/// <param name="timeoutSeconds">Number of seconds to try the upload before canceling.</param>
/// <returns>True if stream was uploaded successfully, false otherwise.</returns>
public bool UploadIni(Stream stream, out string message, int timeoutSeconds = 5)
{
message = "";
// make a local copy of the stream to upload
var workingFile = new List <byte>();
var payload = new List <byte>();
workingFile.AddRange(stream.ToByteArray());
var timeout = DateTime.Now.AddSeconds(timeoutSeconds);
var pointer = 0;
ushort page = 0;
ushort missedPage = 0;
var missedPageCount = 0;
var retransmit = false;
const string command = "&@u";
while (true)
{
if (timeout < DateTime.Now)
{
message = "Download Timeout!";
return(false);
}
var payloadLength = Math.Min(workingFile.Count - pointer, 1024);
if (!retransmit)
{
// load the array into a list with page information
payload.Clear();
payload.AddRange(DataConversions.ConvertUInt16ToList(page));
payload.AddRange(workingFile.GetRange(pointer, payloadLength));
payload.AddRange(Checksums.Fletcher16(payload));
// add escapes to the payload
payload.EscapeList();
// add the command to the front of the payload
payload.InsertRange(0, Encoding.ASCII.GetBytes(command));
}
// send the data
retransmit = false;
var returnString = _port.SendCommand(payload, 1).FirstOrDefault();
if (returnString?.Contains($"{command}{page},{payloadLength}") == true)
{
// housekeeping variables
pointer += payloadLength;
page++;
// we had a good transfer, determine next step
if (pointer == workingFile.Count)
{
// we are at the end of the file, so tell the system we are done
payload.Clear();
payload.AddRange(DataConversions.ConvertUInt16ToList(0xFFFF));
payload.AddRange(Checksums.Fletcher16(payload));
// add escapes to the payload
payload.EscapeList();
// add the command to the front of the payload
payload.InsertRange(0, Encoding.ASCII.GetBytes(command));
// send command
var returnStrings = _port.SendCommand(payload, 5000);
if (returnStrings.Count > 0)
{
if (returnStrings[0].Contains("&@us"))
{
// upload successfull
message = "INI Upload Successfull!";
return(true);
}
if (returnStrings[0].Contains("&@ue"))
{
// file error
returnStrings[0] = returnStrings[0].Replace("&@ue", "");
returnStrings.RemoveRange(returnStrings.Count - 2, 2);
var substring = string.Join("\r\n", returnStrings.ToArray());
message = $"INI Upload Failed! The INI file had the following errors:{Environment.NewLine}{substring}";
return(false);
}
}
else
{
message = "Unable to parse INI file, unknown error!";
return(false);
}
}
// next loop
continue;
}
// switch to deal with packet error types
switch (returnString)
{
case "&@u!c":
message = "Checksum Error!";
break;
case "&@u!w":
message = "Data processing error!";
break;
case "&@u!s":
message = "Upload Complete!";
break;
case "&@u!e":
message = "Upload Error!";
break;
case "":
message = "Lost Connection!";
break;
default:
break;
}
// process the missed packet count
if (page == missedPage)
{
missedPageCount++;
if (missedPageCount > 5)
{
// upload failed
return(false);
}
}
else
{
// missed a different page, so reset counter
missedPage = page;
missedPageCount = 1;
}
// retransmit page
retransmit = true;
}
}
protected override bool StateMachine_TransferPacket(StepDefinition currentStep)
{
// check for connection
if (!_comPortRef.IsConnected)
{
SetTransferState(TransferState.FailedConnection);
MachineFunctions.JumpToLast(currentStep);
return(StepReturn.JumpCommandUsed);
}
// update the users with % complete
RunPercentUpdate();
var payloadLength = Math.Min(_workingFile.Count - _pointer, 1024);
if (_payloadPage != _currentPage)
{
// calculate read length
_readLength = PageSize * PagesTransmitted;
if (_pointer + _readLength > _workingFile.Count)
{
_readLength = _workingFile.Count - _pointer;
}
// load the array into a list with _currentPage information
_payload.Clear();
_payload.AddRange(DataConversions.ConvertUInt16ToList(_currentPage));
_payload.AddRange(_workingFile.GetRange(_pointer, _readLength));
_payload.AddRange(Checksums.Fletcher16(_payload));
// add escapes to the payload
_payload.EscapeList();
// add the command to the front of the payload
_payload.InsertRange(0, Encoding.ASCII.GetBytes(Command));
// update the housekeeping variables
_payloadPage = _currentPage;
}
// send the data
var returnString = _comPortRef.SendCommand(_payload, 1).FirstOrDefault();
if (returnString?.Contains($"{Command}{_currentPage},{payloadLength}") == true)
{
// housekeeping variables
_pointer += payloadLength;
_currentPage += PagesTransmitted;
// we had a good transfer, determine next step
if (_pointer == _workingFile.Count)
{
// we are at the end of the file, so tell the system we are done
_payload.Clear();
_payload.AddRange(DataConversions.ConvertUInt16ToList(0xFFFF));
_payload.AddRange(Checksums.Fletcher16(_payload));
// add escapes to the payload
_payload.EscapeList();
// add the command to the front of the payload
_payload.InsertRange(0, Encoding.ASCII.GetBytes(Command));
// send command
var returnStrings = _comPortRef.SendCommand(_payload, 5000);
if (returnStrings.Count > 0)
{
if (returnStrings[0].Contains("&@us"))
{
// upload successfull
SetTransferState(TransferState.Succeeded);
// move to end
MachineFunctions.JumpToLast(currentStep);
return(StepReturn.JumpCommandUsed);
}
if (returnStrings[0].Contains("&@ue"))
{
// file error
returnStrings[0] = returnStrings[0].Replace("&@ue", "");
returnStrings.RemoveRange(returnStrings.Count - 2, 2);
var substring = string.Join("\r\n", returnStrings.ToArray());
SetTransferState(TransferState.FailedInvalidFile, $"INI Upload Failed! The INI file had the following errors:{Environment.NewLine}{substring}");
// move to end
MachineFunctions.JumpToLast(currentStep);
return(StepReturn.JumpCommandUsed);
}
}
else
{
SetTransferState(TransferState.Failed, "Unable to parse INI file, unknown error!");
// move to end
MachineFunctions.JumpToLast(currentStep);
return(StepReturn.JumpCommandUsed);
}
}
// next loop
return(StepReturn.RepeatStep);
}
// switch to deal with packet error types
switch (returnString)
{
case "&@u!c":
SetTransferState(_currentTransferState, "Checksum Error!");
break;
case "&@u!w":
SetTransferState(_currentTransferState, "Data Processing Error");
break;
case "&@u!s":
SetTransferState(_currentTransferState, "Upload Complete");
break;
case "&@u!e":
SetTransferState(_currentTransferState, "Upload Error");
break;
case "":
SetTransferState(_currentTransferState, "Lost Connection");
break;
default:
break;
}
// process the missed packet count
return(ProcessMissedPage(_currentPage));
}
