void _timer_Elapsed(object sender, ElapsedEventArgs e)
{
_timer.Enabled = false;
try
{
switch (_state)
{
case FlashState.Idle: // waiting for a signal to start the flash sequence
_communicationTimeout = 0;
break;
case FlashState.StartErase:
if (_port.IsOpen)
{
byte[] allBytes = File.ReadAllBytes(_filename);
int tx_buf_pnt = 0;
_fileOffset = 0;
// build the complete transmit buffer
while (_fileOffset < _length2Send)
{
uint checksum = 0;
completeflashbuffer[tx_buf_pnt ++] = 0x3A;
completeflashbuffer[tx_buf_pnt++] = 0x20; // 32 bytes
checksum += completeflashbuffer[tx_buf_pnt-1];
byte addresshigh = Convert.ToByte(_fileOffset / 256);
byte addresslow = Convert.ToByte((_fileOffset - (256 * addresshigh)));
completeflashbuffer[tx_buf_pnt++] = addresshigh;
checksum += completeflashbuffer[tx_buf_pnt - 1];
completeflashbuffer[tx_buf_pnt++] = addresslow;
checksum += completeflashbuffer[tx_buf_pnt - 1];
completeflashbuffer[tx_buf_pnt++] = 0x00;
checksum += completeflashbuffer[tx_buf_pnt - 1];
for (int j = 0; j < 32; j++)
{
completeflashbuffer[tx_buf_pnt++] = allBytes[_fileOffset + j];
checksum += completeflashbuffer[tx_buf_pnt - 1];
}
checksum = 0x100 - checksum;
completeflashbuffer[tx_buf_pnt++] = Convert.ToByte(checksum & 0x000000FF);
_fileOffset += 32;
}
DumpTransmitBuffer();
_fileOffset = 0;
_communicationTimeout = 0;
CastInfoEvent("Starting erase", 0);
// send the erase command to the ECU
WriteBinaryData("3A30303030303030314646");
Thread.Sleep(2000);
WriteBinaryData("3A011122334455");
_state = FlashState.WaitEraseComplete;
}
break;
case FlashState.WaitEraseComplete:
// waiting for reception of
// 02 30 59 30 35 03 6F
// 02 31 59 30 35 03 6E
// 02 31 59 30 35 03 6E
if (rxmsgtype == RxMsgType.StartErasingFlash)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Erasing flash", 0);
_communicationTimeout = 0;
}
else if (rxmsgtype == RxMsgType.FinishedErasingFlash)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Finished erasing flash", 0);
_eraseFlashDone++;
if (_eraseFlashDone == 3)
{
_state = FlashState.StartFlashing;
_communicationTimeout = 0;
}
}
else if (rxmsgtype == RxMsgType.NegativeAcknowledge)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Failed to erase flash", 0);
_state = FlashState.EraseError;
_communicationTimeout = 0;
}
else if (rxmsgtype == RxMsgType.Unknown)
{
//TODO: Implement timeout here
_communicationTimeout++;
if (_communicationTimeout > 1500)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Timeout erasing flash", 0);
_state = FlashState.EraseError;
}
}
break;
case FlashState.StartFlashing:
_retries = 0;
Thread.Sleep(2500);
CastInfoEvent("Start sending flash data", 0);
_fileOffset = 0;
_state = FlashState.SendFlashData;
break;
case FlashState.SendFlashData:
// the flasher takes about 155 seconds to complete the flash sending
// this means 0x10000 bytes in 155 seconds = 423 bytes per second
// since we transmit 32 bytes at a time that means we have 423/32 packets to
// send per second which comes down to ~13 packets per second
// every packet consists of 38 bytes of data (32 flash bytes) which means
// ~ 500 bytes per second transfer. Bitrate = 9k6 which translates roughly to
// 1000 bytes per second, so there should be NO delay between the packets if
// we count the echo string into the transmission speed
// send a portion of the flash data from _fileOffset, 32 bytes
// _read_data = false;
for (int t = 0; t < completeflashbuffer.Length; t++)
{
_port.Write(completeflashbuffer, t, 1);
//_echo = true;
//Thread.Sleep(1);
if( t % 1024 == 0) CastInfoEvent("Flashing...", ((t * 100) / completeflashbuffer.Length));
// wait it out here?
}
for (int i = 0; i < 250; i++)
{
CastInfoEvent("Waiting...", 100);
Thread.Sleep(1);
}
// _read_data = true;
/*while (_fileOffset < _length2Send)
{
byte[] data2send = readdatafromfile(_filename, _fileOffset, 32);
byte[] command2send = new byte[38];
command2send[0] = 0x3A;
command2send[1] = 0x20;
byte addresshigh = Convert.ToByte(_fileOffset / 256);
byte addresslow = Convert.ToByte((_fileOffset - (256 * addresshigh)));
//AddToLog("Address: " + curaddress.ToString("X4") + " hi: " + addresshigh.ToString("X2") + " lo: " + addresslow.ToString("X2"));
command2send[2] = addresshigh;
command2send[3] = addresslow;
command2send[4] = 0x00;
for (int j = 0; j < 32; j++)
{
command2send[5 + j] = data2send[j];
}
command2send[37] = CalcChecksum(command2send);
_fileOffset += 32;
_port.Write(command2send, 0, command2send.Length);
//Thread.Sleep( command2send.Length);
while (_port.BytesToWrite > 0) Thread.Sleep(0);
Thread.Sleep(75); // sleep 75 ms to get to ~13 packets per second
CastInfoEvent("Flashing...", ((_fileOffset * 100) / _length2Send));
}*/
//_state = FlashState.WaitFlashData;
// todo: use a stopwatch to hold on for a few moments ?
while (_port.BytesToWrite > 0) CastInfoEvent("Flashing...", 100); // wait it out.. maybe we should wait
// until no more characters are received from the port?
_state = FlashState.SendEndFlash;
//_port.Write(txString);
// wait until buffer = empty?
break;
case FlashState.WaitFlashData:
if (_fileOffset >= _length2Send)
{
_state = FlashState.SendEndFlash;
//Thread.Sleep(100);
}
else _state = FlashState.SendFlashData;
break;
case FlashState.SendEndFlash:
Thread.Sleep(2000);
CastInfoEvent("Sending flash end sequence...", 100);
// _logAllData = true;
rxmsgtype = RxMsgType.Unknown;
WriteBinaryData("3A0000000000");
Thread.Sleep(500);
WriteBinaryData("3A30303030303030314646");
//WriteBinaryData("3A00000000003A30303030303030314646");
_communicationTimeout = 0;
_state = FlashState.WaitEndFlash;
break;
case FlashState.WaitEndFlash:
if (rxmsgtype == RxMsgType.FinishedFlashing)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Finished writing flash", 0);
_state = FlashState.FlashingDone;
_communicationTimeout = 0;
}
else if (rxmsgtype == RxMsgType.NegativeAcknowledge)
{
rxmsgtype = RxMsgType.Unknown;
_communicationTimeout = 0;
_retries++;
if (_retries < 3)
{
CastInfoEvent("Retry end flash sequence: " + _retries.ToString(), 0);
_state = FlashState.SendEndFlash;
}
else
{
CastInfoEvent("Flashing failed", 0);
_state = FlashState.FlashingError;
}
}
else if (rxmsgtype == RxMsgType.Unknown)
{
//TODO: Implement timeout here
_communicationTimeout++;
if (_communicationTimeout > 500)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Timeout writing flash", 0);
_state = FlashState.FlashingError;
}
}
else
{
AddToLogfile("Ignoring message: " + rxmsgtype.ToString());
rxmsgtype = RxMsgType.Unknown;
}
break;
case FlashState.FlashingDone:
CastInfoEvent("Flashing completed", 100);
CleanupFlasher();
_state = FlashState.Idle;
break;
case FlashState.EraseError:
CastInfoEvent("Erase failed", 0);
CleanupFlasher();
_state = FlashState.Idle;
break;
case FlashState.FlashingError:
CastInfoEvent("Flashing failed", 0);
CleanupFlasher();
_state = FlashState.Idle;
break;
}
}
catch (Exception E)
{
CastInfoEvent("Internal error: " + E.Message, 0);
}
_timer.Enabled = true;
}
void _port_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
if (e.EventType == SerialData.Chars)
{
string rxdata = _port.ReadExisting();
for (int t = 0; t < rxdata.Length; t++)
{
_dataReceived = true;
//if (_echo) _echo = false; // ignore echo characters
//else
{
byte b = Convert.ToByte(rxdata[t]);
if (_state == FlashState.SendFlashData)
{
// collect upto 38 bytes every time
echoBuf[echoCount++] = b;
if (echoCount == 38)
{
echoCount = 0;
DumpEchoBuf();
}
}
else AddToLogfile("RX: " + b.ToString("X2"));
switch (rx_state)
{
case 0:
// waiting for 0x02
if (b == 0x02) rx_state++;
break;
case 1:
if (b == 0x30 || b == 0x31) rx_state++;
else rx_state = 0;
break;
case 2:
if (b == 0x59) rx_state++;
else rx_state = 0;
break;
case 3:
if (b == 0x30) rx_state++;
else rx_state = 0;
break;
case 4:
if (b == 0x39)
{
rxmsgtype = RxMsgType.StartErasingFlash;
AddToLogfile("RX: RxMsgType.StartErasingFlash");
}
else if (b == 0x34)
{
rxmsgtype = RxMsgType.FinishedFlashing;
AddToLogfile("RX: RxMsgType.FinishedFlashing");
}
else if (b == 0x35)
{
rxmsgtype = RxMsgType.FinishedErasingFlash;
AddToLogfile("RX: RxMsgType.FinishedErasingFlash");
}
else if (b == 0x37)
{
rxmsgtype = RxMsgType.Acknowledge;
AddToLogfile("RX: RxMsgType.Acknowledge");
}
else if (b == 0x38)
{
rxmsgtype = RxMsgType.NegativeAcknowledge;
AddToLogfile("RX: RxMsgType.NegativeAcknowledge");
}
else
{
AddToLogfile("RX MsgTypeID: " + b.ToString("X2"));
}
rx_state = 0;
break;
}
}
}
}
}
void _timer_Elapsed(object sender, ElapsedEventArgs e)
{
_timer.Enabled = false;
try
{
switch (_state)
{
case FlashState.Idle: // waiting for a signal to start the flash sequence
_communicationTimeout = 0;
break;
case FlashState.StartErase:
if (_port.IsOpen)
{
byte[] allBytes = File.ReadAllBytes(_filename);
int tx_buf_pnt = 0;
_fileOffset = 0;
// build the complete transmit buffer
while (_fileOffset < _length2Send)
{
uint checksum = 0;
completeflashbuffer[tx_buf_pnt++] = 0x3A;
completeflashbuffer[tx_buf_pnt++] = 0x20; // 32 bytes
checksum += completeflashbuffer[tx_buf_pnt - 1];
byte addresshigh = Convert.ToByte(_fileOffset / 256);
byte addresslow = Convert.ToByte((_fileOffset - (256 * addresshigh)));
completeflashbuffer[tx_buf_pnt++] = addresshigh;
checksum += completeflashbuffer[tx_buf_pnt - 1];
completeflashbuffer[tx_buf_pnt++] = addresslow;
checksum += completeflashbuffer[tx_buf_pnt - 1];
completeflashbuffer[tx_buf_pnt++] = 0x00;
checksum += completeflashbuffer[tx_buf_pnt - 1];
for (int j = 0; j < 32; j++)
{
completeflashbuffer[tx_buf_pnt++] = allBytes[_fileOffset + j];
checksum += completeflashbuffer[tx_buf_pnt - 1];
}
checksum = 0x100 - checksum;
completeflashbuffer[tx_buf_pnt++] = Convert.ToByte(checksum & 0x000000FF);
_fileOffset += 32;
}
DumpTransmitBuffer();
_fileOffset = 0;
_communicationTimeout = 0;
CastInfoEvent("Starting erase", 0);
// send the erase command to the ECU
WriteBinaryData("3A30303030303030314646");
Thread.Sleep(2000);
WriteBinaryData("3A011122334455");
_state = FlashState.WaitEraseComplete;
}
break;
case FlashState.WaitEraseComplete:
// waiting for reception of
// 02 30 59 30 35 03 6F
// 02 31 59 30 35 03 6E
// 02 31 59 30 35 03 6E
if (rxmsgtype == RxMsgType.StartErasingFlash)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Erasing flash", 0);
_communicationTimeout = 0;
}
else if (rxmsgtype == RxMsgType.FinishedErasingFlash)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Finished erasing flash", 0);
_eraseFlashDone++;
if (_eraseFlashDone == 3)
{
_state = FlashState.StartFlashing;
_communicationTimeout = 0;
}
}
else if (rxmsgtype == RxMsgType.NegativeAcknowledge)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Failed to erase flash", 0);
_state = FlashState.EraseError;
_communicationTimeout = 0;
}
else if (rxmsgtype == RxMsgType.Unknown)
{
//TODO: Implement timeout here
_communicationTimeout++;
if (_communicationTimeout > 1500)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Timeout erasing flash", 0);
_state = FlashState.EraseError;
}
}
break;
case FlashState.StartFlashing:
_retries = 0;
Thread.Sleep(2500);
CastInfoEvent("Start sending flash data", 0);
_fileOffset = 0;
_state = FlashState.SendFlashData;
break;
case FlashState.SendFlashData:
// the flasher takes about 155 seconds to complete the flash sending
// this means 0x10000 bytes in 155 seconds = 423 bytes per second
// since we transmit 32 bytes at a time that means we have 423/32 packets to
// send per second which comes down to ~13 packets per second
// every packet consists of 38 bytes of data (32 flash bytes) which means
// ~ 500 bytes per second transfer. Bitrate = 9k6 which translates roughly to
// 1000 bytes per second, so there should be NO delay between the packets if
// we count the echo string into the transmission speed
// send a portion of the flash data from _fileOffset, 32 bytes
// _read_data = false;
for (int t = 0; t < completeflashbuffer.Length; t++)
{
_port.Write(completeflashbuffer, t, 1);
//_echo = true;
//Thread.Sleep(1);
if (t % 1024 == 0)
{
CastInfoEvent("Flashing...", ((t * 100) / completeflashbuffer.Length));
}
// wait it out here?
}
for (int i = 0; i < 250; i++)
{
CastInfoEvent("Waiting...", 100);
Thread.Sleep(1);
}
// _read_data = true;
/*while (_fileOffset < _length2Send)
* {
* byte[] data2send = readdatafromfile(_filename, _fileOffset, 32);
* byte[] command2send = new byte[38];
* command2send[0] = 0x3A;
* command2send[1] = 0x20;
* byte addresshigh = Convert.ToByte(_fileOffset / 256);
* byte addresslow = Convert.ToByte((_fileOffset - (256 * addresshigh)));
* //AddToLog("Address: " + curaddress.ToString("X4") + " hi: " + addresshigh.ToString("X2") + " lo: " + addresslow.ToString("X2"));
* command2send[2] = addresshigh;
* command2send[3] = addresslow;
* command2send[4] = 0x00;
* for (int j = 0; j < 32; j++)
* {
* command2send[5 + j] = data2send[j];
* }
* command2send[37] = CalcChecksum(command2send);
* _fileOffset += 32;
* _port.Write(command2send, 0, command2send.Length);
* //Thread.Sleep( command2send.Length);
* while (_port.BytesToWrite > 0) Thread.Sleep(0);
* Thread.Sleep(75); // sleep 75 ms to get to ~13 packets per second
* CastInfoEvent("Flashing...", ((_fileOffset * 100) / _length2Send));
* }*/
//_state = FlashState.WaitFlashData;
// todo: use a stopwatch to hold on for a few moments ?
while (_port.BytesToWrite > 0)
{
CastInfoEvent("Flashing...", 100); // wait it out.. maybe we should wait
}
// until no more characters are received from the port?
_state = FlashState.SendEndFlash;
//_port.Write(txString);
// wait until buffer = empty?
break;
case FlashState.WaitFlashData:
if (_fileOffset >= _length2Send)
{
_state = FlashState.SendEndFlash;
//Thread.Sleep(100);
}
else
{
_state = FlashState.SendFlashData;
}
break;
case FlashState.SendEndFlash:
Thread.Sleep(2000);
CastInfoEvent("Sending flash end sequence...", 100);
// _logAllData = true;
rxmsgtype = RxMsgType.Unknown;
WriteBinaryData("3A0000000000");
Thread.Sleep(500);
WriteBinaryData("3A30303030303030314646");
//WriteBinaryData("3A00000000003A30303030303030314646");
_communicationTimeout = 0;
_state = FlashState.WaitEndFlash;
break;
case FlashState.WaitEndFlash:
if (rxmsgtype == RxMsgType.FinishedFlashing)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Finished writing flash", 0);
_state = FlashState.FlashingDone;
_communicationTimeout = 0;
}
else if (rxmsgtype == RxMsgType.NegativeAcknowledge)
{
rxmsgtype = RxMsgType.Unknown;
_communicationTimeout = 0;
_retries++;
if (_retries < 3)
{
CastInfoEvent("Retry end flash sequence: " + _retries.ToString(), 0);
_state = FlashState.SendEndFlash;
}
else
{
CastInfoEvent("Flashing failed", 0);
_state = FlashState.FlashingError;
}
}
else if (rxmsgtype == RxMsgType.Unknown)
{
//TODO: Implement timeout here
_communicationTimeout++;
if (_communicationTimeout > 500)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Timeout writing flash", 0);
_state = FlashState.FlashingError;
}
}
else
{
AddToLogfile("Ignoring message: " + rxmsgtype.ToString());
rxmsgtype = RxMsgType.Unknown;
}
break;
case FlashState.FlashingDone:
CastInfoEvent("Flashing completed", 100);
CleanupFlasher();
_state = FlashState.Idle;
break;
case FlashState.EraseError:
CastInfoEvent("Erase failed", 0);
CleanupFlasher();
_state = FlashState.Idle;
break;
case FlashState.FlashingError:
CastInfoEvent("Flashing failed", 0);
CleanupFlasher();
_state = FlashState.Idle;
break;
}
}
catch (Exception E)
{
CastInfoEvent("Internal error: " + E.Message, 0);
}
_timer.Enabled = true;
}
void _port_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
if (e.EventType == SerialData.Chars)
{
string rxdata = _port.ReadExisting();
for (int t = 0; t < rxdata.Length; t++)
{
_dataReceived = true;
//if (_echo) _echo = false; // ignore echo characters
//else
{
byte b = Convert.ToByte(rxdata[t]);
if (_state == FlashState.SendFlashData)
{
// collect upto 38 bytes every time
echoBuf[echoCount++] = b;
if (echoCount == 38)
{
echoCount = 0;
DumpEchoBuf();
}
}
else
{
AddToLogfile("RX: " + b.ToString("X2"));
}
switch (rx_state)
{
case 0:
// waiting for 0x02
if (b == 0x02)
{
rx_state++;
}
break;
case 1:
if (b == 0x30 || b == 0x31)
{
rx_state++;
}
else
{
rx_state = 0;
}
break;
case 2:
if (b == 0x59)
{
rx_state++;
}
else
{
rx_state = 0;
}
break;
case 3:
if (b == 0x30)
{
rx_state++;
}
else
{
rx_state = 0;
}
break;
case 4:
if (b == 0x39)
{
rxmsgtype = RxMsgType.StartErasingFlash;
AddToLogfile("RX: RxMsgType.StartErasingFlash");
}
else if (b == 0x34)
{
rxmsgtype = RxMsgType.FinishedFlashing;
AddToLogfile("RX: RxMsgType.FinishedFlashing");
}
else if (b == 0x35)
{
rxmsgtype = RxMsgType.FinishedErasingFlash;
AddToLogfile("RX: RxMsgType.FinishedErasingFlash");
}
else if (b == 0x37)
{
rxmsgtype = RxMsgType.Acknowledge;
AddToLogfile("RX: RxMsgType.Acknowledge");
}
else if (b == 0x38)
{
rxmsgtype = RxMsgType.NegativeAcknowledge;
AddToLogfile("RX: RxMsgType.NegativeAcknowledge");
}
else
{
AddToLogfile("RX MsgTypeID: " + b.ToString("X2"));
}
rx_state = 0;
break;
}
}
}
}
}
void _timer_ElapsedOLD(object sender, ElapsedEventArgs e)
{
_timer.Enabled = false;
try
{
switch (_state)
{
case FlashState.Idle: // waiting for a signal to start the flash sequence
_communicationTimeout = 0;
break;
//TODO: This should be started later when flashing is done! <GS-18042011>
case FlashState.VerifyChecksum:
CastInfoEvent("Starting checksum verification:" + _checksumType.ToString(), 0);
_communicationTimeout = 0;
allBytes = File.ReadAllBytes(_filename);
fileChecksum = 0;
switch (_checksumType)
{
case 0: // normal calculation
for (int ci = 0; ci < 0x1FF00; ci++)
{
fileChecksum += allBytes[ci];
}
fileChecksum &= 0xFFFF;
strChecksumToSend = "3AFE55443322110000000000000300000000" + fileChecksum.ToString("X4") + "0000000000000000000000000000000000";
break;
case 1: // assume first bank programmed, and second bank empty (FFs)
for (int ci = 0; ci < 0x10000; ci++)
{
fileChecksum += allBytes[ci];
}
for (int ci = 0; ci < 0xFF00; ci++)
{
fileChecksum += 0xFF;
}
fileChecksum &= 0xFFFF;
strChecksumToSend = "3AFE55443322110000000000000300000000" + fileChecksum.ToString("X4") + "0000000000000000000000000000000000";
break;
case 2: // assume entire flash chip empty (FFs)
for (int ci = 0; ci < 0x1FF00; ci++)
{
fileChecksum += 0xFF;
}
fileChecksum &= 0xFFFF;
strChecksumToSend = "3AFE55443322110000000000000300000000" + fileChecksum.ToString("X4") + "0000000000000000000000000000000000";
break;
case 3: // assume entire flash chip 00s
fileChecksum &= 0xFFFF;
strChecksumToSend = "3AFE55443322110000000000000300000000" + fileChecksum.ToString("X4") + "0000000000000000000000000000000000";
break;
/*case 4: // assume first bank overwritten with second bank (possible?)
for (int ci = 0; ci < 0x1FF00; ci++)
{
fileChecksum += 0xFF;
}
fileChecksum &= 0xFFFF;
strChecksumToSend = "3AFE55443322110000000000000300000000" + fileChecksum.ToString("X4") + "0000000000000000000000000000000000";
break;*/
}
chksum = calculateChecksumForString(strChecksumToSend);
strChecksumToSend += chksum.ToString("X2");
CastInfoEvent(strChecksumToSend, 0);
WriteBinaryData(strChecksumToSend);
_switchBankDone = 0;
_state = FlashState.WaitChecksumResults;
break;
case FlashState.WaitChecksumResults:
if (rxmsgtype == RxMsgType.StartChecksumVerification)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Verifying checksum", 0);
_communicationTimeout = 0;
}
else if (rxmsgtype == RxMsgType.FinishChecksumVerificationOK)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Verified checksum OK", 0);
_communicationTimeout = 0;
_state = FlashState.Idle;
}
else if (rxmsgtype == RxMsgType.FinishChecksumVerificationFailed)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Verified checksum failed", 0);
_communicationTimeout = 0;
_switchBankDone++;
if (_switchBankDone == 3)
{
_checksumType++;
if (_checksumType == 4) _state = FlashState.Idle;
else _state = FlashState.VerifyChecksum; // next try
Thread.Sleep(2500); // give it a rest
}
}
break;
case FlashState.StartErase:
if (_port.IsOpen)
{
allBytes = File.ReadAllBytes(_filename);
int tx_buf_pnt = 0;
int _partBufferLength = _length2Send / 2;
_fileOffset = 0;
// build the complete transmit buffer for lower flash bank
while (_fileOffset < _partBufferLength)
{
uint checksum = 0;
completeflashbuffer_lower[tx_buf_pnt ++] = 0x3A;
completeflashbuffer_lower[tx_buf_pnt++] = 0x20; // 32 bytes
checksum += completeflashbuffer_lower[tx_buf_pnt - 1];
byte addresshigh = Convert.ToByte(_fileOffset / 256);
byte addresslow = Convert.ToByte((_fileOffset - (256 * addresshigh)));
completeflashbuffer_lower[tx_buf_pnt++] = addresshigh;
checksum += completeflashbuffer_lower[tx_buf_pnt - 1];
completeflashbuffer_lower[tx_buf_pnt++] = addresslow;
checksum += completeflashbuffer_lower[tx_buf_pnt - 1];
completeflashbuffer_lower[tx_buf_pnt++] = 0x00; // indicate lower bank
checksum += completeflashbuffer_lower[tx_buf_pnt - 1];
for (int j = 0; j < 32; j++)
{
completeflashbuffer_lower[tx_buf_pnt++] = allBytes[_fileOffset + j];
checksum += completeflashbuffer_lower[tx_buf_pnt - 1];
}
checksum = 0x100 - checksum;
completeflashbuffer_lower[tx_buf_pnt++] = Convert.ToByte(checksum & 0x000000FF);
_fileOffset += 32;
}
tx_buf_pnt = 0;
// build the complete transmit buffer for upper flash bank
while (_fileOffset < _length2Send - 0x100)
{
uint checksum = 0;
completeflashbuffer_upper[tx_buf_pnt++] = 0x3A;
completeflashbuffer_upper[tx_buf_pnt++] = 0x20; // 32 bytes
checksum += completeflashbuffer_upper[tx_buf_pnt - 1];
byte addresshigh = Convert.ToByte((_fileOffset - 0x10000) / 256);
byte addresslow = Convert.ToByte(((_fileOffset - 0x10000) - (256 * addresshigh)));
completeflashbuffer_upper[tx_buf_pnt++] = addresshigh;
checksum += completeflashbuffer_upper[tx_buf_pnt - 1];
completeflashbuffer_upper[tx_buf_pnt++] = addresslow;
checksum += completeflashbuffer_upper[tx_buf_pnt - 1];
completeflashbuffer_upper[tx_buf_pnt++] = 0x00; // indicate upper bank <GS-19042011> was 0x02!
checksum += completeflashbuffer_upper[tx_buf_pnt - 1];
for (int j = 0; j < 32; j++)
{
completeflashbuffer_upper[tx_buf_pnt++] = allBytes[_fileOffset + j];
checksum += completeflashbuffer_upper[tx_buf_pnt - 1];
}
checksum = 0x100 - checksum;
completeflashbuffer_upper[tx_buf_pnt++] = Convert.ToByte(checksum & 0x000000FF);
_fileOffset += 32;
}
DumpTransmitBuffer();
_fileOffset = 0;
_communicationTimeout = 0;
CastInfoEvent("Starting erase", 0);
// send the erase command to the ECU
//WriteBinaryData("3A30303030303030314646");
//Thread.Sleep(2000);
WriteBinaryData("3AFF554433221100000000000002000000000000000000000000000000000000000000000000"); // checksum is also 00
_state = FlashState.WaitEraseComplete;
}
break;
case FlashState.WaitEraseComplete:
// waiting for reception of
// 02 30 59 30 35 03 6F
// 02 31 59 30 35 03 6E
// 02 31 59 30 35 03 6E
if (rxmsgtype == RxMsgType.StartErasingFlash)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Erasing flash", 0);
_communicationTimeout = 0;
}
else if (rxmsgtype == RxMsgType.FinishedErasingFlash)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Finished erasing flash", 0);
_eraseFlashDone++;
if (_eraseFlashDone == 3)
{
_state = FlashState.StartFlashing;
_communicationTimeout = 0;
}
}
else if (rxmsgtype == RxMsgType.NegativeAcknowledge)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Failed to erase flash", 0);
_state = FlashState.EraseError;
_communicationTimeout = 0;
}
else if (rxmsgtype == RxMsgType.ProgrammingVoltageOutOfRange)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Failed to erase flash, voltage out of range", 0);
AddToLogfile("Failed to erase flash, voltage out of range");
_state = FlashState.EraseError;
_communicationTimeout = 0;
}
else if (rxmsgtype == RxMsgType.Unknown)
{
_communicationTimeout++;
if (_communicationTimeout > 1500)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Timeout erasing flash", 0);
_state = FlashState.EraseError;
}
}
break;
case FlashState.StartFlashing:
_retries = 0;
Thread.Sleep(2500);
CastInfoEvent("Start sending flash data", 0);
_fileOffset = 0;
_state = FlashState.SendFlashData;
break;
case FlashState.SendFlashData:
// send a portion of the flash data from _fileOffset, 32 bytes
for (int t = 0; t < completeflashbuffer_lower.Length; t++)
{
_port.Write(completeflashbuffer_lower, t, 1);
if (t % 1024 == 0) CastInfoEvent("Flashing...", ((t * 100) / (completeflashbuffer_lower.Length * 2)));
}
_state = FlashState.WaitForFinishFirstBank;
break;
case FlashState.WaitForFinishFirstBank:
//TODO: <GS-18042011> Now we first have to wait for 3x MessageRxMsgType.FinishedFlashing - 0x34
if (rxmsgtype == RxMsgType.FinishedFlashing)
{
rxmsgtype = RxMsgType.Unknown;
_communicationTimeout = 0;
_waitFirstBankFlashed++;
if (_waitFirstBankFlashed == 3)
{
for (int i = 0; i < 250; i++)
{
CastInfoEvent("Waiting...", 50);
Thread.Sleep(1);
}
while (_port.BytesToWrite > 0) CastInfoEvent("Flashing...", 50); // wait it out.. maybe we should wait
_state = FlashState.SwitchBank;
CastInfoEvent("First bank programmed", 50);
AddToLogfile("First bank programmed");
}
}
else if (rxmsgtype == RxMsgType.NegativeAcknowledge)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Flashing bank 0 failed", 0);
_communicationTimeout = 0;
_state = FlashState.FlashingError;
}
break;
case FlashState.SwitchBank:
// now switch to upper bank
//8788898A8B8C8D8E8F909192939495969798999A9B9C9D9E9F
//ACADAEAFB0B1B2B3B4B5B6B7B8B9BABBBCBDBE
// UPTO 0x01FF00
WriteBinaryData("3AFF554433221100000000000001FF0001010000000000000000000000000000000000000000"); // checksum is 00 again!
// UPTO 0x020000
//WriteBinaryData("3AFF5544332211000000000000020000010100000000000000000000000000000000000000FE"); // checksum is 00 again!
//WriteBinaryData("3AFF554433221100000000000000000001010000000000000000000000000000000000000000"); // checksum is 00 again!
// update state to waiting for bankswitch
_communicationTimeout = 0;
CastInfoEvent("Switching bank", 50);
_state = FlashState.WaitBankSwitch;
break;
case FlashState.WaitBankSwitch:
if (rxmsgtype == RxMsgType.StartSwitchingBank)
{
rxmsgtype = RxMsgType.Unknown;
_communicationTimeout = 0;
}
else if (rxmsgtype == RxMsgType.FinishedSwitchingBank)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Bank switched", 50);
AddToLogfile("Bank switched");
_switchBankDone++;
if (_switchBankDone == 3)
{
_state = FlashState.SendFlashDataUpper; // <GS-19042011> nothing more to do, the extra acks where ghosts
echoCount = 0; // force buffer to be empty!
_switchBankDone = 0;
_communicationTimeout = 0;
}
}
else if (rxmsgtype == RxMsgType.NegativeAcknowledge)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Failed to switch bank", 0);
_state = FlashState.FlashingError;
_communicationTimeout = 0;
}
else if (rxmsgtype == RxMsgType.Unknown)
{
_communicationTimeout++;
if (_communicationTimeout > 1500)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Timeout switching bank", 0);
_state = FlashState.FlashingError;
}
}
break;
case FlashState.WaitAckForNextBank:
//CastInfoEvent("Waiting for ack for next bank", 0);
AddToLogfile("State = FlashState.WaitAckForNextBank");
if (rxmsgtype == RxMsgType.FinishedFlashing)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Ack for next bank", 50);
_switchBankDone++;
if (_switchBankDone == 3)
{
_state = FlashState.SendFlashDataUpper;
_communicationTimeout = 0;
}
}
else if (rxmsgtype == RxMsgType.Unknown)
{
_communicationTimeout++;
if (_communicationTimeout > 1000) // 10 seconds for testing
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Timeout waiting for ack for next bank", 0);
_state = FlashState.SendFlashDataUpper; // proceed with next bank anyway
}
}
break;
case FlashState.SendFlashDataUpper:
// TODO: Do we have to wait here again, just like the first bank?
Thread.Sleep(2500); // <GS-20042011> testing
CastInfoEvent("Start sending upper bank flash data", 50);
for (int t = 0; t < completeflashbuffer_upper.Length; t++)
{
_port.Write(completeflashbuffer_upper, t, 1);
if (t % 1024 == 0) CastInfoEvent("Flashing...", 50 + ((t * 100) / (completeflashbuffer_upper.Length * 2)));
}
CastInfoEvent("Waiting...", 100);
for (int i = 0; i < 250; i++)
{
Thread.Sleep(1);
}
while (_port.BytesToWrite > 0) CastInfoEvent("Flashing...", 100); // wait it out.. maybe we should wait
_switchBankDone = 0;
_communicationTimeout = 0;
_state = FlashState.WaitEndFlashUpperBank;
break;
case FlashState.WaitFlashData:
if (_fileOffset >= _length2Send)
{
_state = FlashState.SendEndFlash;
//Thread.Sleep(100);
}
else _state = FlashState.SendFlashData;
break;
case FlashState.WaitEndFlashUpperBank:
//TODO: <GS-19042011> we receive three Acks here ... wait for that first!
if (rxmsgtype == RxMsgType.OutOfRangeError)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Out of range for bank 1", 100);
_switchBankDone++;
if (_switchBankDone == 3)
{
_state = FlashState.FlashingError;
_communicationTimeout = 0;
}
}
else if (rxmsgtype == RxMsgType.NegativeAcknowledge)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Failed to flash bank 1", 100);
_switchBankDone++;
if (_switchBankDone == 3)
{
_state = FlashState.FlashingError;
_communicationTimeout = 0;
}
}
else if (rxmsgtype == RxMsgType.FinishedFlashing)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Finished flashing bank 1", 100);
_switchBankDone++;
if (_switchBankDone == 3)
{
_state = FlashState.SendEndFlash;
_communicationTimeout = 0;
}
}
else if (rxmsgtype == RxMsgType.Unknown)
{
_communicationTimeout++;
if (_communicationTimeout > 1000) // 10 seconds for testing
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Timeout waiting for ack for bank 1", 0);
_state = FlashState.SendEndFlash; // done?
}
}
break;
case FlashState.SendEndFlash:
/*Thread.Sleep(2000);
CastInfoEvent("Sending flash end sequence...", 100);
rxmsgtype = RxMsgType.Unknown;
WriteBinaryData("3A0000000000"); // null command
Thread.Sleep(500);
WriteBinaryData("3A30303030303030314646");
_communicationTimeout = 0;
_state = FlashState.WaitEndFlash;*/
Thread.Sleep(2000);
_communicationTimeout = 0;
CastInfoEvent("Starting checksum verification", 100);
// file checksum (0-0x20000) should be in location
//8788898A8B8C8D8E8F909192939495969798999A9B9C9D9E9F
fileChecksum = 0;
for (int ci = 0; ci < 0x1FF00; ci++)
{
fileChecksum += allBytes[ci];
}
fileChecksum &= 0xFFFF;
//8788898A8B8C8D8E8F909192939495969798999A9B9C9D9E9F
strChecksumToSend = "3AFE55443322110000000000000300000000" + fileChecksum.ToString("X4") + "0000000000000000000000000000000000";
chksum = calculateChecksumForString(strChecksumToSend);
strChecksumToSend += chksum.ToString("X2");
WriteBinaryData(strChecksumToSend);
//8788898A8B8C8D8E8F909192939495969798999A9B9C9D9E9F
//WriteBinaryData("3AFE554433221100000000000003000000000000000000000000000000000000000000000000"); // checksum is also 00
_state = FlashState.WaitChecksumResultsAfterFlashing;
break;
case FlashState.WaitChecksumResultsAfterFlashing:
if (rxmsgtype == RxMsgType.StartChecksumVerification)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Verifying checksum", 100);
_communicationTimeout = 0;
}
else if (rxmsgtype == RxMsgType.FinishChecksumVerificationOK)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Verified checksum OK", 100);
_communicationTimeout = 0;
_state = FlashState.FlashingDone;
}
else if (rxmsgtype == RxMsgType.FinishChecksumVerificationFailed)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Verified checksum failed", 0);
_communicationTimeout = 0;
_state = FlashState.FlashingError;
}
break;
case FlashState.WaitEndFlash:
if (rxmsgtype == RxMsgType.FinishedFlashing)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Finished writing flash", 100);
_state = FlashState.FlashingDone;
_communicationTimeout = 0;
}
else if (rxmsgtype == RxMsgType.NegativeAcknowledge)
{
rxmsgtype = RxMsgType.Unknown;
_communicationTimeout = 0;
_retries++;
if (_retries < 3)
{
CastInfoEvent("Retry end flash sequence: " + _retries.ToString(), 0);
_state = FlashState.SendEndFlash;
}
else
{
//CastInfoEvent("Flashing failed", 0);
_state = FlashState.FlashingError;
}
}
else if (rxmsgtype == RxMsgType.Unknown)
{
//TODO: Implement timeout here
_communicationTimeout++;
if (_communicationTimeout > 500)
{
rxmsgtype = RxMsgType.Unknown;
CastInfoEvent("Timeout writing flash", 0);
_state = FlashState.FlashingError;
}
}
else
{
AddToLogfile("Ignoring message: " + rxmsgtype.ToString());
rxmsgtype = RxMsgType.Unknown;
}
break;
case FlashState.FlashingDone:
CastInfoEvent("Flashing completed", 100);
CleanupFlasher();
_state = FlashState.Idle;
break;
case FlashState.EraseError:
CastInfoEvent("Erase failed", 0);
CleanupFlasher();
_state = FlashState.Idle;
break;
case FlashState.FlashingError:
CastInfoEvent("Flashing failed", 0);
CleanupFlasher();
_state = FlashState.Idle;
break;
}
}
catch (Exception E)
{
CastInfoEvent("Internal error: " + E.Message, 0);
}
_timer.Enabled = true;
}
void _port_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
if (e.EventType == SerialData.Chars)
{
string rxdata = _port.ReadExisting();
for (int t = 0; t < rxdata.Length; t++)
{
_dataReceived = true;
//if (_echo) _echo = false; // ignore echo characters
//else
{
byte b = Convert.ToByte(rxdata[t]);
if (_state == FlashState.SendFlashData || _state == FlashState.SendFlashDataUpper || _state == FlashState.WaitForFinishFirstBank)
{
// collect upto 38 bytes every time
echoBuf[echoCount++] = b;
if (echoCount == 38)
{
echoCount = 0;
DumpEchoBuf();
}
}
else AddToLogfile("RX: " + b.ToString("X2") + " " + rx_state.ToString());
switch (rx_state)
{
//02 30 59 30 34 03 6E
case 0:
// waiting for 0x02
if (b == 0x02) rx_state++;
break;
case 1:
if (b == 0x30 || b == 0x31) rx_state++;
else rx_state = 0;
break;
case 2:
if (b == 0x59) rx_state++;
else rx_state = 0;
break;
case 3:
if (b == 0x30) rx_state++;
else rx_state = 0;
break;
case 4:
// possible return values:
// 0x38 // negative acknowledge
// 0x31 // No magic word was received for a command that DOES require it
// 0x32 // some result on erase cycle, either fail or bank erased ID
// 0x33 // timing error, a 0x3A frame was received while programming bytes in flash
// 0x34 // flashing completed, not all bytes received
// 0x35 // finished erase sequence
// 0x36 // flashing completed
// 0x37 // positive acknowledge - Out of range error
// 0x39 // start erase sequence
// 0x41 // start bank switch
// 0x42 // finished bank switch
// 0x43 // some sort of verify command response (start)
// 0x44 // some sort of verify command response (end good/fail)
// 0x45 // some sort of verify command response (end good/fail)
// 0x46 // programming voltage range check error
if (b == 0x39)
{
rxmsgtype = RxMsgType.StartErasingFlash;
AddToLogfile("RX: RxMsgType.StartErasingFlash - 0x39");
}
else if (b == 0x31)
{
rxmsgtype = RxMsgType.NoMagicWordReceived;
AddToLogfile("RX: RxMsgType.NoMagicWordReceived - 0x31");
}
else if (b == 0x34)
{
rxmsgtype = RxMsgType.FinishedFlashing;
AddToLogfile("RX: RxMsgType.FinishedFlashing - 0x34");
}
else if (b == 0x35)
{
rxmsgtype = RxMsgType.FinishedErasingFlash;
AddToLogfile("RX: RxMsgType.FinishedErasingFlash");
}
else if (b == 0x36)
{
rxmsgtype = RxMsgType.FinishedFlashing;
AddToLogfile("RX: RxMsgType.FinishedFlashing - 0x36");
}
else if (b == 0x37)
{
//rxmsgtype = RxMsgType.Acknowledge;
rxmsgtype = RxMsgType.OutOfRangeError;
AddToLogfile("RX: RxMsgType.OutOfRangeError");
}
else if (b == 0x38)
{
rxmsgtype = RxMsgType.NegativeAcknowledge;
AddToLogfile("RX: RxMsgType.NegativeAcknowledge");
}
else if (b == 0x41)
{
rxmsgtype = RxMsgType.StartSwitchingBank;
AddToLogfile("RX: RxMsgType.StartSwitchingBank");
}
else if (b == 0x42)
{
rxmsgtype = RxMsgType.FinishedSwitchingBank;
AddToLogfile("RX: RxMsgType.FinishedSwitchingBank");
}
else if (b == 0x46)
{
rxmsgtype = RxMsgType.ProgrammingVoltageOutOfRange;
AddToLogfile("RX: RxMsgType.ProgrammingVoltageOutOfRange");
}
else if (b == 0x43)
{
rxmsgtype = RxMsgType.StartChecksumVerification;
AddToLogfile("RX: RxMsgType.StartChecksumVerification");
}
else if (b == 0x44)
{
rxmsgtype = RxMsgType.FinishChecksumVerificationFailed;
AddToLogfile("RX: RxMsgType.FinishChecksumVerificationFailed");
}
else if (b == 0x45)
{
rxmsgtype = RxMsgType.FinishChecksumVerificationOK;
AddToLogfile("RX: RxMsgType.FinishChecksumVerificationOK");
}
else
{
AddToLogfile("RX MsgTypeID: " + b.ToString("X2"));
}
rx_state = 0;
break;
}
}
}
}
}