void OnTimer2(object sender, System.Timers.ElapsedEventArgs e)
{
lock (Locker)
{
_currentFlashStatus = FlasherStatus.Timeout;
}
}
void OnSerialDataReceived(object sender, SerialDataReceivedEventArgs e)
{
Debug.WriteLine(String.Format("readyread: {0}", System.Threading.Thread.CurrentThread.ManagedThreadId));
lock (Locker)
{
var sp = sender as SerialPort;
if (sp == null)
{
return;
}
_timer.Stop();
var len = sp.Read(ReadBuf, _readBufOffset, sp.BytesToRead);
_readBufOffset += len;
switch (_currentFlashStatus)
{
case FlasherStatus.WaitReady:
{
var response = Encoding.ASCII.GetString(ReadBuf, 0, _readBufOffset);
if (response == "bad")
{
_currentFlashStatus = FlasherStatus.Bad;
}
else if (response == "ready")
{
_currentFlashStatus = FlasherStatus.ReadyToSendNextPacket;
_readBufOffset = 0;
}
else if (_readBufOffset >= 5)
{
_currentFlashStatus = FlasherStatus.WrongPacket;
}
else
{
_timer.Interval = 1000;
_timer.Start();
}
}
break;
case FlasherStatus.WaitResponse:
{
var response = Encoding.ASCII.GetString(ReadBuf, 0, _readBufOffset);
if (response == "bad")
{
_currentFlashStatus = FlasherStatus.Bad;
}
else if (response == "good")
{
_currentFlashStatus = FlasherStatus.ReadyToSendNextPacket;
_readBufOffset = 0;
}
else if (_readBufOffset >= 4)
{
_currentFlashStatus = FlasherStatus.WrongPacket;
}
else
{
_timer.Interval = 1000;
_timer.Start();
}
}
break;
case FlasherStatus.WaitLastResponse:
{
var response = Encoding.ASCII.GetString(ReadBuf, 0, _readBufOffset);
if (response == "bad")
{
_currentFlashStatus = FlasherStatus.Bad;
}
else if (response == "good")
{
_currentFlashStatus = FlasherStatus.LastPacket;
_readBufOffset = 0;
}
else if (_readBufOffset >= 4)
{
_currentFlashStatus = FlasherStatus.WrongPacket;
}
else
{
_timer.Interval = 1000;
_timer.Start();
}
}
break;
default:
{
_currentFlashStatus = FlasherStatus.WrongPacket;
}
break;
}
}
}
void bgWorker_DoWork(object sender, DoWorkEventArgs e)
{
var worker = sender as BackgroundWorker;
_readBufOffset = 0;
var startAddress = (UInt32)_minAddress;
var iterators = ((uint)_maxAddress - startAddress) / 128;
iterators += 4;
var curIter = 0;
SetMaxValueForProgressBar((int)iterators);
SetValueForProgressBar(curIter);
Debug.WriteLine(String.Format("background: {0}", System.Threading.Thread.CurrentThread.ManagedThreadId));
if (worker == null)
{
return;
}
var portName = e.Argument.ToString();
var portStatus = String.Format("Порт {0} открыт", portName);
SetTextForProgressBar(String.Format("Попытка открыть {0} порт", portName));
using (var sp = new SerialPort(portName))
{
try
{
sp.DataReceived += OnSerialDataReceived;
sp.Parity = Parity.None;
sp.DataBits = 8;
sp.BaudRate = 38400;
sp.Handshake = Handshake.None;
sp.StopBits = StopBits.One;
sp.Open();
SetValueForProgressBar(++curIter);
}
catch (Exception)
{
e.Result = String.Format("Не получилось открыть {0} порт", portName);
return;
}
SetTextForProgressBar(portStatus);
_timer = new System.Timers.Timer {
Interval = 5000
};
_timer.Elapsed += OnTimer2;
try
{
sp.Write(new ASCIIEncoding().GetBytes("start"), 0, 5);
_currentFlashStatus = FlasherStatus.WaitReady;
_timer.Start();
var isProcess = true;
var tempMaxAddress = _maxAddress;
var crcIsSended = false;
while (isProcess)
{
System.Threading.Thread.Sleep(0);
switch (_currentFlashStatus)
{
case FlasherStatus.WaitReady:
case FlasherStatus.WaitResponse:
case FlasherStatus.WaitLastResponse:
break;
case FlasherStatus.Ready:
case FlasherStatus.ReadyToSendNextPacket:
{
SetValueForProgressBar(++curIter);
_timer.Stop();
var packet = new List <byte>();
UInt16 crc;
if (startAddress >= 0x10000)
{
// всё, прошили
if (crcIsSended)
{
packet.Add(6);
packet.Add(4);
packet.Add(0);
packet.Add(0);
crc = chksm(packet.ToArray());
packet.Add((byte)(crc >> 8));
packet.Add((byte)crc);
codeList(ref packet);
_timer.Interval = 7000;
_timer.Start();
_currentFlashStatus = FlasherStatus.WaitLastResponse;
sp.Write(packet.ToArray(), 0, packet.Count);
break;
}
// посылаем crc
packet.Add(10);
packet.Add(3);
packet.Add(0);
packet.Add(0);
var crcOfMemory = CalculateCrc();
for (var i = 0; i < 4; ++i)
{
packet.Add(crcOfMemory[i]);
}
crc = chksm(packet.ToArray());
packet.Add((byte)(crc >> 8));
packet.Add((byte)crc);
codeList(ref packet);
_timer.Interval = 7000;
_timer.Start();
crcIsSended = true;
_currentFlashStatus = FlasherStatus.WaitResponse;
sp.Write(packet.ToArray(), 0, packet.Count);
break;
}
if (startAddress >= tempMaxAddress)
{
// закончились полезные данные
packet.Add(6);
packet.Add(2);
packet.Add((byte)_maxAddress);
packet.Add((byte)(_maxAddress >> 8));
crc = chksm(packet.ToArray());
packet.Add((byte)(crc >> 8));
packet.Add((byte)crc);
codeList(ref packet);
startAddress = 0x10000;
tempMaxAddress = 0x100000;
_currentFlashStatus = FlasherStatus.WaitResponse;
sp.Write(packet.ToArray(), 0, packet.Count);
_timer.Interval = 7000;
_timer.Start();
break;
}
packet.Add(134);
packet.Add(1);
packet.Add((byte)startAddress);
packet.Add((byte)(startAddress >> 8));
for (var i = 0; i < 128; ++i)
{
packet.Add(_buffer[startAddress + i]);
}
crc = chksm(packet.ToArray());
packet.Add((byte)(crc >> 8));
packet.Add((byte)crc);
codeList(ref packet);
_currentFlashStatus = FlasherStatus.WaitResponse;
sp.Write(packet.ToArray(), 0, packet.Count);
_timer.Interval = 3000;
_timer.Start();
startAddress += 128;
}
break;
case FlasherStatus.Timeout:
{
isProcess = false;
e.Result = "Превышено время ожидания ответа от устройства";
}
break;
case FlasherStatus.WrongPacket:
{
isProcess = false;
e.Result = "Принят не верный ответ от устройства";
}
break;
case FlasherStatus.Bad:
{
isProcess = false;
e.Result = "Устройство отрапортовало об ошибке";
}
break;
case FlasherStatus.LastPacket:
{
SetValueForProgressBar(++curIter);
isProcess = false;
e.Result = "Устройство прошито";
}
break;
}
}
SetValueForProgressBar((int)iterators);
}
catch (Exception exc)
{
e.Result = exc.Message;
}
finally
{
_timer.Stop();
sp.Close();
}
}
}