解析GNGGA，GNVTG，GNRMC这些NMEA句子的C代码

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public Nmea0183Parser(string portName) { _port = new SerialPort(portName); // replace with your port name _port.BaudRate = 9600; // replace with your baud rate _port.Parity = Parity.None; _port.StopBits = StopBits.One; _port.DataBits = 8; _port.Handshake = Handshake.None; _port.RtsEnable = true; } public void Start() { _port.Open(); } public void Stop() { _port.Close(); } public void ParseNmeaSentence(string sentence) { var parts = sentence.Split(','); var data = new string[parts.Length]; for (int i = 0; i < parts.Length; i++) { data[i] = parts[i].Trim(); } _data.Add(data); } public void SaveToExcel() { using (var package = new ExcelPackage()) { var worksheet = package.Workbook.Worksheets.Add("NMEA Data"); for (int i = 0; i < _data.Count; i++) { for (int j = 0; j < _data[i].Length; j++) { worksheet.Cells[i + 1, j + 1].Value = _data[i][j]; } } var fileName = $"NMEA_data_{DateTime.Now:yyyyMMddHHmmss}.xlsx"; // you can customize the file name here. package.SaveAs(new FileInfo(fileName)); } } 

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