public bool Checksum()
{
SAE.SAEMessage Command = new SAE.SAEMessage(Address: 0x10);
SAE.SAEMessage Response = new SAE.SAEMessage();
Command.Mode = SAE.SAEModes.START_DIAG_ROUTINE_BY_NUMBER;
Command.AddInt8((int)DiagRoutine.Checksum);
Command.AddInt16(firmware_image.Checksum);
Response = session.SAETxRx(Command, 0);
if (Response.Response != SAE.SAE_responses.ROUTINE_NOT_COMPLETE)
{
throw new Exception("Failure attempting to execute checksum routine on PCM");
}
System.Threading.Thread.Sleep(2000);
Command.Mode = SAE.SAEModes.STOP_DIAG_ROUTINE_BY_NUMBER;
Command.AddInt8((int)DiagRoutine.Checksum);
Response = session.SAETxRx(Command, 0);
if (Response.Response == SAE.SAE_responses.AFFIRMITIVE_RESPONSE)
{
return(true);
}
return(false);
}
private int VinAddress()
{
SAE.SAEMessage Command = new SAE.SAEMessage(Address: 0x10);
SAE.SAEMessage Response = new SAE.SAEMessage();
Command.Mode = SAE.SAEModes.DATA_BY_PID;
Command.AddInt16(0x1100);
Response = session.SAETxRx(Command, 1);
if (Response.IsValid)
{
return(BitConverter.ToInt32(Response.Data, 0));
}
throw new J2534Exception("Failure in 'VinAddress'");
}
public void ProgramBank(int Address, byte [] Data)
{
SAE.SAEMessage Command = new SAE.SAEMessage(Address: 0x10);
SAE.SAEMessage Response = new SAE.SAEMessage();
int block_length = 0x0400;
int packets_per_block = block_length / 6 + 1;
for (int offset = Data.Length - block_length; offset >= 0; offset -= block_length)
{
int retry_count = 3;
do
{
Command.Mode = SAE.SAEModes.REQ_DOWNLOAD;
Command.AddInt8(0x80);
Command.AddInt16(block_length);
Command.AddInt24(Address + offset);
Response = session.SAETxRx(Command, 2);
if (Response.Response != SAE.SAE_responses.AFFIRMITIVE_RESPONSE)
{
throw new Exception("failure initiatiing block transfer"); //fail
}
Command.Mode = SAE.SAEModes.DATA_TRANSFER;
int BlockCheckSum = Data.Skip(offset).Take(block_length).Sum(b => (int)b);
int p = 0;
for (; p < (block_length - 4); p += 6) //Create 170 packets with 6 bytes each
{
Command.DataList.Add(Data.Skip(offset + p).Take(6).ToArray());
}
//Create the last packet with the remaining 4 bytes of data and 2 byte checksum
Command.DataList.Add(Data.Skip(offset + p).Take(4).Concat(BitConverter.GetBytes((short)BlockCheckSum).Reverse()).ToArray());
//send all the packets at one time
session.SAETx(Command);
Command.Mode = SAE.SAEModes.TRANSFER_ROUTINE_EXIT;
Command.AddInt8(0x80);
Response = session.SAETxRx(Command, 0);
retry_count--;
if (Response.Response == SAE.SAE_responses.AFFIRMITIVE_RESPONSE)
{
retry_count = 0;
}
else if (Response.Response != SAE.SAE_responses.FAIL_WITHOUT_RESULTS ||
retry_count < 1)
{
throw new Exception("Too many retries or general failure"); //fail
}
} while (retry_count > 0);
Command.Mode = SAE.SAEModes.START_DIAG_ROUTINE_BY_NUMBER;
Command.AddInt8((int)DiagRoutine.WriteFlash);
Response = session.SAETxRx(Command, 0);
if (Response.Response != SAE.SAE_responses.ROUTINE_NOT_COMPLETE &&
Response.Response != SAE.SAE_responses.AFFIRMITIVE_RESPONSE)
{
throw new Exception("Something failed attempting to write block to flash"); //fail
}
Command.Mode = SAE.SAEModes.STOP_DIAG_ROUTINE_BY_NUMBER;
Command.AddInt8((int)DiagRoutine.WriteFlash);
Response = session.SAETxRx(Command, 0);
if (Response.Response != SAE.SAE_responses.AFFIRMITIVE_RESPONSE)
{
throw new Exception("Something failed attempting to write block to flash");//fail
}
}
}
private byte[] BlockRead(int RangeStart, int RangeEnd)
{
SAE.SAEMessage Command = new SAE.SAEMessage(Address: 0x10);
SAE.SAEMessage Response = new SAE.SAEMessage();
int block_length = 0x0400;
int packets_per_block = block_length / 6 + 1;
if (block_length % packets_per_block == 0)
{
}
List <byte> data = new List <byte>();
object block_transfer_handle = session.CreateRxHandle(Command.Address, SAE.SAEModes.DATA_TRANSFER);
for (int block_address = RangeStart; block_address < RangeEnd; block_address += block_length)
{
Command.Mode = SAE.SAEModes.REQ_UPLOAD;
byte[] Data = GetBytes.Int8(0x80).Concat(
GetBytes.Int16(block_length)).Concat(
GetBytes.Int24(block_address)).ToArray();
//Data.C
Command.AddInt8(0x80); //bank selection? (note from old code)
Command.AddInt16(block_length);
Command.AddInt24(block_address);
Response = session.SAETxRx(Command, 2);
if (Response.Response != SAE.SAE_responses.AFFIRMITIVE_RESPONSE)
{
throw new Exception();
}
List <byte[]> rx_data = session.SAERx(block_transfer_handle, packets_per_block, 600);
if (rx_data.Count != packets_per_block)
{
throw new Exception();
//fail
}
else
{
int a = 1;
}
data.AddRange(rx_data.Aggregate((acumulator, next_packet) => acumulator.Concat(next_packet).ToArray()).Take(block_length));
Command.Mode = SAE.SAEModes.TRANSFER_ROUTINE_EXIT;
Command.AddInt8(0x80);
Response = session.SAETxRx(Command, 0);
if (Response.Response != SAE.SAE_responses.AFFIRMITIVE_RESPONSE)
{
throw new Exception();//fail
}
}
session.DestroyRxHandle(block_transfer_handle);
return(data.ToArray());
}
private bool IVFERHandshake(bool HighSpeed = true)
{
SAE.SAEMessage Command = new SAE.SAEMessage(Address: 0x10);
SAE.SAEMessage Response = new SAE.SAEMessage();
session.InitializeIVEFERConfig();
session.FEPSOn();
do
{
//break on key press or timeout?
} while (session.CatchBroadcastMessage() == false);
Command.Mode = SAE.SAEModes.DIAG_HEARTBEAT;
session.StartPeriodicMessage(Command);
Command.Mode = SAE.SAEModes.START_DIAG_ROUTINE_BY_NUMBER;
Command.AddInt8((int)DiagRoutine.IVFEREntry);
Command.AddInt16(0x00D8); //Number of blocks to write (not used for reading)
Command.AddInt8(salt);
Command.AddInt8(0x00);
Response = session.SAETxRx(Command, 0);
if (Response.Response != SAE.SAE_responses.AFFIRMITIVE_RESPONSE)
{
System.Windows.Forms.MessageBox.Show("IVFER entry failed!");
return(false);
}
Command.Mode = SAE.SAEModes.REQ_SECURITY_ACCESS;
Command.AddInt8(0x01);
Response = session.SAETxRx(Command, 1);
if (Response.Mode != SAE.SAEModes.REQ_SECURITY_ACCESS_RESPONSE &&
Response.Data.Length == 3)
{
System.Windows.Forms.MessageBox.Show("Security Access Level 1 entry failed!");
return(false);
}
Command.Mode = SAE.SAEModes.REQ_SECURITY_ACCESS;
Command.AddInt8(0x02);
Command.AddBytes(ComputeKey1(Response.Data));
Response = session.SAETxRx(Command, 1);
if (Response.Response != SAE.SAE_responses.SECURITY_ACCESS_ALLOWED)
{
System.Windows.Forms.MessageBox.Show("Security Access Level 1 Challenge failed!");
return(false);
}
//Request level two security for high data rate
Command.Mode = SAE.SAEModes.REQ_SECURITY_ACCESS;
Command.AddInt8(0x01);
Response = session.SAETxRx(Command, 1);
if (Response.Mode == SAE.SAEModes.REQ_SECURITY_ACCESS_RESPONSE &&
Response.Data.Length == 3)
{
Command.Mode = SAE.SAEModes.REQ_SECURITY_ACCESS;
Command.AddInt8(0x02);
Command.AddBytes(ComputeKey2(Response.Data));
Response = session.SAETxRx(Command, 1);
if (Response.Response != SAE.SAE_responses.SECURITY_ACCESS_ALLOWED)
{
System.Windows.Forms.MessageBox.Show("Security Access Level 2 Challenge failed!");
return(false);
}
if (!HighSpeed)
{
return(true);
}
Command.Mode = SAE.SAEModes.START_DIAG_ROUTINE_BY_NUMBER;
Command.AddInt8((int)DiagRoutine.BaudRate);
Command.AddInt8(0x03); //83.2k baud rate
Response = session.SAETxRx(Command, 0);
if (Response.Response == SAE.SAE_responses.AFFIRMITIVE_RESPONSE)
{
session.HighSpeedMode();
}
}
return(true);
}