/// <summary>
/// Helper method for transforming the information in a KWPReply to a string.
/// </summary>
/// <param name="a_reply">The KWPReply.</param>
/// <returns>A string representing the information in the a_reply.</returns>
private string getString(KWPReply a_reply)
{
if (a_reply.getData().Length == 0)
return "";
Encoding ascii = Encoding.ASCII;
ascii.GetChars(a_reply.getData(), 0, a_reply.getData().Length);
return ascii.GetString(a_reply.getData(), 0, a_reply.getData().Length);
}
private UInt16 getUint16(KWPReply a_reply)
{
UInt16 uinteger;
uinteger = (UInt16)((a_reply.getData()[1] << 8) | (a_reply.getData()[0]));
return uinteger;
}
/// <summary>
/// This method writes to a symbol in RAM.
/// The ECU must not be write protected for this to work.
/// </summary>
/// <param name="a_symbolNumber">Symbol number to write to.</param>
/// <param name="a_data">Data to write.</param>
/// <returns></returns>
public bool writeSymbolRequestTest(uint a_symbolNumber, byte[] a_data, int idx)
{
LogDataString("writeSymbolRequest: " + a_symbolNumber.ToString());
KWPReply reply = new KWPReply();
KWPResult result;
int LengthToTx = a_data.Length;
if (LengthToTx > 0x41) LengthToTx = 0x41; // FA
byte[] symbolNumberAndData = new byte[3 + /*a_data.Length*/ LengthToTx];
//First two bytes should be the symbol number
symbolNumberAndData[0] = (byte)(a_symbolNumber >> 8);
symbolNumberAndData[1] = (byte)(a_symbolNumber);
symbolNumberAndData[2] = (byte)(0);
// len len
// adr adr adr
for (int i = 0; i < /*a_data.Length*/ LengthToTx; i++)
symbolNumberAndData[i + 3] = a_data[i];
//string requestString = "RequestString: ";
//foreach (byte b in symbolNumberAndData)
//{
// requestString += b.ToString("X2") + " ";
//}
//Console.WriteLine(requestString);
// end dump to console
//Console.WriteLine("SymbolNumberAndData length: " + symbolNumberAndData.Length.ToString("X8"));
KWPRequest t_request = new KWPRequest(0x3D, 0x80, symbolNumberAndData);
//Console.WriteLine(t_request.ToString());
result = sendRequest(t_request, out reply);
if (result != KWPResult.OK)
{
Console.WriteLine("Result != KWPResult.OK");
return false;
}
//Console.WriteLine("Result = " + reply.getData()[0].ToString("X2"));
if (reply.getData()[0] == 0x7D)
{
return true;
}
else
{
return false;
}
}
/// <summary>
/// This method writes to a symbol in RAM.
/// The ECU must not be write protected for this to work.
/// </summary>
/// <param name="a_symbolNumber">Symbol number to write to.</param>
/// <param name="a_data">Data to write.</param>
/// <returns></returns>
public bool writeSymbolRequestAddress(uint a_address, byte[] a_data)
{
LogDataString("writeSymbolRequest: " + a_address.ToString("X8") + "len: " + a_data.Length.ToString("X4"));
KWPReply reply = new KWPReply();
KWPResult result;
byte[] symbolNumberAndData = new byte[4 + a_data.Length];
//symbolNumberAndData[0] = (byte)(a_address >> 24);
symbolNumberAndData[0] = (byte)(a_address >> 16);
symbolNumberAndData[1] = (byte)(a_address >> 8);
symbolNumberAndData[2] = (byte)(a_address);
symbolNumberAndData[3] = (byte)(a_data.Length);
// len len
// adr adr adr
for (int i = 0; i < a_data.Length; i++)
symbolNumberAndData[i + 4] = a_data[i];
//string requestString = "RequestString: ";
//foreach (byte b in symbolNumberAndData)
//{
// requestString += b.ToString("X2") + " ";
//}
//Console.WriteLine(requestString);
// end dump to console
//Console.WriteLine("SymbolNumberAndData length: " + symbolNumberAndData.Length.ToString("X8"));
KWPRequest t_request = new KWPRequest(0x3D, /*0x81, */symbolNumberAndData);
//Console.WriteLine(t_request.ToString());
result = sendRequest(t_request, out reply);
if (result != KWPResult.OK)
{
Console.WriteLine("Result != KWPResult.OK");
return false;
}
// Console.WriteLine("Result = " + reply.getData()[0].ToString("X2"));
//Console.WriteLine("Result-total = " + reply.ToString());
if (reply.getData()[0] == 0x7D)
{
return true;
}
else
{
return false;
}
}
/// <summary>
/// This method send a request to receive data from flash. The sendReadRequest
/// method must be called before this.
/// </summary>
/// <param name="r_data">The requested data.</param>
/// <returns></returns>
public bool sendRequestDataByOffset(out byte[] r_data)
{
LogDataString("sendRequestDataByOffset");
KWPReply reply = new KWPReply();
KWPResult result;
result = sendRequest(new KWPRequest(0x21, 0xF0), out reply);
r_data = reply.getData();
if (result == KWPResult.OK)
return true;
else
return false;
}
/// <summary>
/// This method requests data to be transmitted.
/// </summary>
/// <param name="a_data">The data to be transmitted.</param>
/// <returns>KWPResult</returns>
public KWPResult sendDataTransferRequest(out byte[] a_data)
{
LogDataString("sendDataTransferRequest");
KWPReply reply = new KWPReply();
KWPResult result;
//Send request
//Mode = 0x36
//PID = no PID used by this request
//Data = no data
//Expected result = 0x76
result = sendRequest(new KWPRequest(0x36), out reply);
a_data = reply.getData();
if (reply.getMode() != 0x76)
return KWPResult.NOK;
else
return result;
}
/// <summary>
/// Send a request for a sequrity access with one out of two methods to
/// calculate the key.
/// </summary>
/// <param name="a_method">Key calculation method [1,2]</param>
/// <returns>true if sequrity access was granted, otherwise false</returns>
private bool requestSequrityAccessLevel()
{
LogDataString("requestSequrityAccessLevel");
KWPReply reply = new KWPReply();
KWPResult result;
byte[] seed = new byte[2];
byte[] key = new byte[2];
// Send a seed request.
KWPRequest requestForKey = new KWPRequest(0x27, 0x05); // TODO: What is this for T8?
Console.WriteLine("requestSequrityAccessLevel request for key: " + requestForKey.ToString());
result = sendRequest(requestForKey, out reply);
Console.WriteLine("requestSequrityAccessLevel request for key result: " + reply.ToString());
if (result != KWPResult.OK)
return false;
if (reply.getData().Length < 2)
return false;
seed[0] = reply.getData()[0];
seed[1] = reply.getData()[1];
key = calculateKey(seed);
// Send key reply.
KWPRequest sendKeyRequest = new KWPRequest(0x27, 0x06, key);
Console.WriteLine("requestSequrityAccessLevel send Key request: " + sendKeyRequest.ToString());
result = sendRequest(sendKeyRequest, out reply);
Console.WriteLine("requestSequrityAccessLevel send Key reply: " + reply.ToString());
if (result != KWPResult.OK)
{
Console.WriteLine("Security access request was not send");
return false;
}
//Check if sequrity was granted.
Console.WriteLine("Mode: " + reply.getMode().ToString("X2"));
Console.WriteLine("Data: " + reply.getData()[0].ToString("X2"));
if ((reply.getMode() == 0x67) && (reply.getData()[0] == 0x34)) // WAS [0]
{
Console.WriteLine("Security access granted");
return true;
}
Console.WriteLine("Security access was not granted: " + reply.ToString());
return false;
}