private void btnCalcCRC_Click(object sender, EventArgs e)
{
String input_str = txtDataforCRC.Text;
List <Byte> crc_input_data = ConvertInputString2ByteList(input_str);
UInt16 CRC_Value;
// Display input data
//foreach (byte byte_data in crc_input_data)
//{
// rtbSignalData.AppendText(byte_data.ToString("X") + " ");
//}
//rtbSignalData.AppendText("\n");
// Calculate CRC byte-by-byte
CRC_CCITT16.InitCRCValue();
foreach (byte byte_data in crc_input_data)
{
CRC_Value = CRC_CCITT16.GetNextCRC(byte_data);
//rtbSignalData.AppendText(CRC_Value.ToString("X") + " ");
}
CRC_Value = CRC_CCITT16.GetCRCAfterFinalCRC();
// Calculate CRC all at once
CRC_Value = CRC_CCITT16.CalculateCRC4ByteList(crc_input_data);
rtbSignalData.AppendText(CRC_Value.ToString("X") + " ");
// Base64-encoded before sending
String EncodedString = Convert.ToBase64String(crc_input_data.ToArray());
rtbSignalData.AppendText(EncodedString + "\n");
// Prepare to send via UART
EncodedString += "\n";
MySerialPort.SendToSerial(Encoding.ASCII.GetBytes(EncodedString));
}
private void Tmr_FetchingUARTInput_Tick(object sender, EventArgs e)
{
// Regularly polling request message
while (MySerialPort.KLineBlockMessageList.Count() > 0)
{
// Pop 1st KLine Block Message
BlockMessage in_message = MySerialPort.KLineBlockMessageList[0];
MySerialPort.KLineBlockMessageList.RemoveAt(0);
// Display debug message on RichTextBox
String raw_data_in_string = MySerialPort.KLineRawDataInStringList[0];
MySerialPort.KLineRawDataInStringList.RemoveAt(0);
DisplayKLineBlockMessage(rtbKLineData, "raw_input: " + raw_data_in_string);
DisplayKLineBlockMessage(rtbKLineData, "In - " + in_message.GenerateDebugString());
// Process input Kline message and generate output KLine message
KWP_2000_Process kwp_2000_process = new KWP_2000_Process();
BlockMessage out_message = new BlockMessage();
//Use_Random_DTC(kwp_2000_process); // Random Test
//Use_Fixed_DTC_from_HQ(kwp_2000_process); // Simulate response from a ECU device
Scan_DTC_from_UI(kwp_2000_process); // Scan Checkbox status and add DTC into queue
// Generate output block message according to input message and DTC codes
kwp_2000_process.ProcessMessage(in_message, ref out_message);
// Convert output block message to List<byte> so that it can be sent via UART
List <byte> output_data;
out_message.GenerateSerialOutput(out output_data);
// NOTE: because we will also receive all data sent by us, we need to tell UART to skip all data to be sent by SendToSerial
MySerialPort.Add_ECU_Filtering_Data(output_data);
MySerialPort.Enable_ECU_Filtering(true);
// Send output KLine message via UART (after some delay)
Thread.Sleep((KWP_2000_Process.min_delay_before_response - 1));
MySerialPort.SendToSerial(output_data.ToArray());
// Show output KLine message for debug purpose
DisplayKLineBlockMessage(rtbKLineData, "Out - " + out_message.GenerateDebugString());
}
}