Win CE 6.0 获取手持机GPS定位2----示例代码 (C#)
分类:
IT文章
•
2022-05-10 15:02:19
一、须知
1.手持机(PDA)必须有GPS模块,才能通过代码使用串口通信获取GPS相关信息
2.要清楚自己手持机(PDA)固定的GPS通信串口号,如我们公司的手持机获取GPS信息的串口为COM4
3.测试手持机(PDA)是否获取到GPS相关信息,要到室外才能测试出来。
二、制作步骤
(1)新建好win ce项目
(2)封装类
1.CLR_GPS类
1 class CLR_GPS
2 {
3
4 public float latitude = 0; //纬度
5
6 public float longitude = 0; //经度
7
8 public float speed = 0;
9
10 public float status = 0;
11
12 public float direction = 0;
13
14 public float geoideAltitude = 0;
15
16 private System.IO.Ports.SerialPort serialPort;
17
18 CLR_Regex gpsRegex=new CLR_Regex();
19
20 private bool isOpen = false;
21
22
23 #region
24 private delegate void myTestEventHandler();
25 public delegate void LocationEventHandler(string Latitude, string Longitude,string status,bool isNorth,bool isEast,string time);
26 public delegate void serialEventHandler(string data);
27 public delegate void TimeEventHandler(string time);
28 public delegate void DateEventHandler(string date);
29 public delegate void satelliteEventHandlde(string n);
30 public delegate void altitudeEventHandler(string altitude);
31 public delegate void satelliteNumberEventHandler(string num);
32
33
34 private string serialData = string.Empty;
35
36 /// <summary>
37 /// refresh serial data 更新串口数据
38 /// </summary>
39 public event serialEventHandler serialportData;
40
41 /// <summary>
42 /// Refresh Location 更新经纬度
43 /// </summary>
44 public event LocationEventHandler refreshLocation;
45
46
47 /// <summary>
48 /// Refresh Time 更新时间
49 /// </summary>
50 public event TimeEventHandler refreshTime;
51
52
53 /// <summary>
54 /// Refresh Date 更新日期
55 /// </summary>
56 public event DateEventHandler refreshDate;
57
58
59 /// <summary>
60 /// Satellite Total 可视卫星数量
61 /// </summary>
62 public event satelliteNumberEventHandler refreshAllNumber;
63
64 /// <summary>
65 /// Refresh effective satellite 更新卫星数量
66 /// </summary>
67 public event satelliteEventHandlde refreshSatellite;
68
69
70 /// <summary>
71 /// Refresh Altitude 更新海拔
72 /// </summary>
73 public event altitudeEventHandler refreshAltitude;
74
75
76
77 #endregion
78
79
80
81 public CLR_GPS()
82 {
83 serialPort = new System.IO.Ports.SerialPort("COM4", 115200); //此处可根据实际情况设置串口
84 serialPort.DataReceived += new System.IO.Ports.SerialDataReceivedEventHandler(serialPort_DataReceived);
85
86 }
87
88 public CLR_GPS(string portName)
89 {
90 serialPort = new System.IO.Ports.SerialPort(portName, 115200); //此处可根据实际情况设置串口
91 serialPort.DataReceived += new System.IO.Ports.SerialDataReceivedEventHandler(serialPort_DataReceived);
92
93 }
94
95
96 /// <summary>
97 /// stop Receive data 停止接收数据
98 /// </summary>
99 public void stopReceive()
100 {
101 isOpen = false;
102 Thread.Sleep(300);
103 }
104
105 /// <summary>
106 /// start Receiving 开始接收数据
107 /// </summary>
108 public bool startReceive()
109 {
110 try
111 {
112 isOpen = true;
113 if (!serialPort.IsOpen)
114 {
115 serialPort.Open();
116 }
117 return true;
118 }
119 catch (System.Exception)
120 {
121 isOpen = false;
122 return false;
123 }
124
125 }
126
127
128 /// <summary>
129 /// initialization 初始化
130 /// </summary>
131 /// <returns></returns>
132 public bool InitModule()
133 {
134 return true; //此处可根据实际情况进行GPS模块的上电
135
136 }
137
138
139
140 public void FreeModule()
141 {
142 try
143 {
144
145 isOpen = false;
146
147
148 if (serialPort.IsOpen)
149 {
150 serialPort.Close();
151 }
152
153 }
154 catch (Exception)
155 {
156
157 }
158 //此处可根据实际情况进行GPS模块的下电
159
160 }
161
162 void serialPort_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)
163 {
164 try
165 {
166 serialData = serialData + serialPort.ReadExisting();
167 if (serialData.Length > 300)
168 {
169 serialData = serialData.Substring(serialData.LastIndexOf('$'));
170 }
171
172 if (isOpen)
173 {
174 if (serialportData != null)
175 {
176 serialportData(serialData);
177 }
178 AnalysisGPSData(serialData);
179
180 }
181 }
182 catch { }
183
184 }
185
186
187
188
189 private void AnalysisGPGGA(string scr)
190 {
191 string altitude = string.Empty;
192 string[] fields = scr.Split(',');
193
194
195 if (fields.Length>10)
196 {
197 string num = fields[7].Trim();
198 if (num.Length > 0 && gpsRegex.isNumber(num))
199 {
200 //satelliteNumber = Convert.ToInt32(fields[7].Trim());
201 if (refreshSatellite != null)
202 {
203 //Effective Satellite 更新使用卫星数量
204 refreshSatellite(num);
205 }
206 }
207
208 if (fields[9].Trim().Length > 0)
209 {
210 //refresh Altitude 更新海拔
211 if (refreshAltitude != null)
212 {
213 refreshAltitude(fields[9].Trim());
214 }
215 }
216 }
217
218
219 }
220
221
222 private bool AnalysisGPRMC(string scr)
223 {
224 int latiDegree = 400, longiDegree = 400;
225 float latiMinute = 400, longiMinute = 400, speedTemp = 0, directionTemp = direction;
226 string statusTemp = string.Empty;
227 float latitudeTemp = 400, longitudeTemp = 400;
228 bool paramChanged = false;
229
230 bool isNortHemisphere = true;
231 bool isEastHemisphere=true;
232 string time = string.Empty;
233
234 string[] fields = scr.Split(',');
235
236 if (fields.GetLength(0) < 12)
237 return false;
238 // 状态
239
240 string[] utc = fields[1].Trim().Split('.');
241
242
243 if (utc[0].Trim().Length == 6)
244 {
245 time = utc[0].Trim();
246 if (refreshTime!=null)
247 {
248 refreshTime(time);
249 }
250 }
251
252 if (fields[2]=="A")
253 {
254 // //= Convert.ToChar(fields[2]);
255 //char d = Convert.ToChar(fields[2]);
256 statusTemp = fields[2];
257 }
258 // Lati
259 if (fields[3].Length > 5)
260 {
261 if (System.Text.RegularExpressions.Regex.Match(fields[3], @"^[0-9]+[.]?([d]+)?").Value == fields[3])
262 {
263 latiDegree = Convert.ToInt32(fields[3].Substring(0, 2), 10);
264 latiMinute = Convert.ToSingle(fields[3].Substring(2, fields[3].Length - 2));
265 paramChanged = true;
266 }
267 }
268 // NSHemisphere NSHemisphere 南北半球
269 if (fields[4].Length == 1)
270 {
271 //'s' 'S'
272 if (string.Equals(fields[4], "S", StringComparison.CurrentCultureIgnoreCase))
273 {
274 isNortHemisphere = false; //南半球
275 latitudeTemp = -latitudeTemp;
276 }
277 }
278 // long
279 if (fields[5].Length > 5)
280 {
281 if (System.Text.RegularExpressions.Regex.Match(fields[5], @"^[0-9]+[.]?([d]+)?").Value == fields[5])
282 {
283 longiDegree = Convert.ToInt32(fields[5].Substring(0, 3), 10);
284 longiMinute = Convert.ToSingle(fields[5].Substring(3, fields[5].Length - 3));
285 paramChanged = true;
286 }
287 }
288 // EWHemisphere 东经 西经
289 if (fields[6].Length == 1)
290 {
291 //'w' 'W'
292 if (string.Equals(fields[6], "W", StringComparison.CurrentCultureIgnoreCase))
293 {
294 isEastHemisphere=false; //西半球
295 longitudeTemp = -longitudeTemp;
296 }
297 }
298 // speed 速率
299 if (fields[7].Length > 2)
300 {
301 if (System.Text.RegularExpressions.Regex.Match(fields[7], @"^[0-9]+[.]?([d]+)?").Value == fields[7])
302 {
303 speedTemp = (float)(Convert.ToSingle(fields[7]) * 1.852);
304 paramChanged = true;
305 }
306 }
307 // direction 地面航向 正北为零度
308 if (fields[8].Length > 2)
309 {
310 if (System.Text.RegularExpressions.Regex.Match(fields[8], @"^[0-9]+[.]?([d]+)?").Value == fields[8])
311 {
312 directionTemp = Convert.ToSingle(fields[8]);
313 paramChanged = true;
314 }
315 }
316
317 if (fields[9].Trim().Length==6)
318 {
319 if (refreshDate!=null)
320 {
321 refreshDate(trandforDate(fields[9].Trim()));
322 }
323 }
324 if ((latiDegree != 400) && (latiMinute != (float)400.0))
325 {
326 latitudeTemp = (float)(latiDegree + latiMinute / 60.0);
327 }
328 if ((longiDegree != 400) && (longiMinute != (float)400.0))
329 {
330 longitudeTemp = (float)(longiDegree + longiMinute / 60.0);
331 }
332 if (paramChanged)
333 {
334 if (refreshLocation != null)
335 {
336 refreshLocation(fields[4]+":"+latitudeTemp.ToString(), fields[6]+":"+longitudeTemp.ToString(), statusTemp,isNortHemisphere,isEastHemisphere, time);
337 }
338 return true;
339 }
340 else
341 return false;
342 }
343
344
345 /// <summary>
346 /// data for date 将GPS数据转换成日期
347 /// </summary>
348 /// <param name="date"></param>
349 /// <returns></returns>
350 string trandforDate(string date)
351 {
352 return "20"+date.Substring(4, 2) + "-" + date.Substring(2, 2) + "-" + date.Substring(0, 2);
353 }
354
355
356
357
358 void AnalysisGPGSV(string scr)
359 {
360 string[] fields = scr.Split(',');
361
362 if (fields.Length>4)
363 {
364 string AllNum = fields[3].Trim();
365
366 if (AllNum.Length > 0 && gpsRegex.isNumber(AllNum) && refreshAllNumber != null)
367 {
368 //Satellite Total
369 refreshAllNumber(fields[3]);
370 }
371 }
372
373 // 状态
374 }
375
376
377 private void AnalysisGPSData(string sGpsData)
378 {
379 string[] gpsDataSplit = sGpsData.Trim().Split('$');
380
381
382 foreach (string gps in gpsDataSplit)
383 {
384 if (gps.StartsWith("GPRMC"))
385 {
386 AnalysisGPRMC(gps);
387 }
388 else if (gps.StartsWith("GPVTG"))
389 {
390 AnalysisGPVTG(gps);
391 }
392 else if (gps.StartsWith("GPGGA"))
393 {
394 AnalysisGPGGA(gps);
395 }
396 else if (gps.StartsWith("GPGSV"))
397 {
398 AnalysisGPGSV(gps);
399 }
400 else if (gps.StartsWith("GPGLL"))
401 {
402
403 }
404 }
405 return;
406 }
407
408
409 public void AnalysisGPVTG(string sGpsData)
410 {
411
412 }
413
414 }
View Code
2.CLR_Regex类
class CLR_Regex
{
//public bool includeXing(string msg)
//{
// if (Regex.Match(msg, @"^[0-9]+[*]?([d]+)?").Value == msg)
// {
// return true;
// }
// else
// return false;
//}
/// <summary>
/// is number ? 是否全是数字
/// </summary>
/// <param name="msg"></param>
/// <returns></returns>
public bool isNumber(string msg)
{
if (Regex.Match(msg, "^[0-9]*$").Value == msg)
{
return true;
}
else
return false;
}
/// <summary>
/// is real 是否为实数
/// </summary>
/// <param name="msg"></param>
/// <returns></returns>
public bool isRealData(string msg)
{
if (msg.StartsWith("-"))
{
msg = msg.Substring(1);
}
if (Regex.Match(msg, "^[0-9]+(.[0-9]+)$").Value == msg)
{
return true;
}
else
return false;
}
}
View Code
class GPS
{
public string PortNum;
public int BaudRate;
public byte ByteSize;
public byte Parity; // 0-4=no,odd,even,mark,space
public byte StopBits; // 0,1,2 = 1, 1.5, 2
public int ReadTimeout;
//comm port win32 file handle
private int hComm = -1;
public bool Opened = false;
//win32 api constants
private const uint GENERIC_READ = 0x80000000;
private const uint GENERIC_WRITE = 0x40000000;
private const int OPEN_EXISTING = 3;
private const int INVALID_HANDLE_VALUE = -1;
[StructLayout(LayoutKind.Sequential)]
public struct DCB
{
//taken from c struct in platform sdk
public int DCBlength; // sizeof(DCB)
public int BaudRate; // 指定当前波特率 current baud rate
// these are the c struct bit fields, bit twiddle flag to set
public int fBinary; // 指定是否允许二进制模式,在windows95中必须主TRUE binary mode, no EOF check
public int fParity; // 指定是否允许奇偶校验 enable parity checking
public int fOutxCtsFlow; // 指定CTS是否用于检测发送控制,当为TRUE是CTS为OFF,发送将被挂起。 CTS output flow control
public int fOutxDsrFlow; // 指定CTS是否用于检测发送控制 DSR output flow control
public int fDtrControl; // DTR_CONTROL_DISABLE值将DTR置为OFF, DTR_CONTROL_ENABLE值将DTR置为ON, DTR_CONTROL_HANDSHAKE允许DTR"握手" DTR flow control type
public int fDsrSensitivity; // 当该值为TRUE时DSR为OFF时接收的字节被忽略 DSR sensitivity
public int fTXContinueOnXoff; // 指定当接收缓冲区已满,并且驱动程序已经发送出XoffChar字符时发送是否停止。TRUE时,在接收缓冲区接收到缓冲区已满的字节XoffLim且驱动程序已经发送出XoffChar字符中止接收字节之后,发送继续进行。FALSE时,在接收缓冲区接收到代表缓冲区已空的字节XonChar且驱动程序已经发送出恢复发送的XonChar之后,发送继续进行。XOFF continues Tx
public int fOutX; // TRUE时,接收到XoffChar之后便停止发送接收到XonChar之后将重新开始 XON/XOFF out flow control
public int fInX; // TRUE时,接收缓冲区接收到代表缓冲区满的XoffLim之后,XoffChar发送出去接收缓冲区接收到代表缓冲区空的XonLim之后,XonChar发送出去 XON/XOFF in flow control
public int fErrorChar; // 该值为TRUE且fParity为TRUE时,用ErrorChar 成员指定的字符代替奇偶校验错误的接收字符 enable error replacement
public int fNull; // eTRUE时,接收时去掉空(0值)字节 enable null stripping
public int fRtsControl; // RTS flow control
/*RTS_CONTROL_DISABLE时,RTS置为OFF
RTS_CONTROL_ENABLE时, RTS置为ON
RTS_CONTROL_HANDSHAKE时,
当接收缓冲区小于半满时RTS为ON
当接收缓冲区超过四分之三满时RTS为OFF
RTS_CONTROL_TOGGLE时,
当接收缓冲区仍有剩余字节时RTS为ON ,否则缺省为OFF*/
public int fAbortOnError; // TRUE时,有错误发生时中止读和写操作 abort on error
public int fDummy2; // 未使用 reserved
public uint flags;
public ushort wReserved; // 未使用,必须为0 not currently used
public ushort XonLim; // 指定在XON字符发送这前接收缓冲区中可允许的最小字节数 transmit XON threshold
public ushort XoffLim; // 指定在XOFF字符发送这前接收缓冲区中可允许的最小字节数 transmit XOFF threshold
public byte ByteSize; // 指定端口当前使用的数据位 number of bits/byte, 4-8
public byte Parity; // 指定端口当前使用的奇偶校验方法,可能为:EVENPARITY,MARKPARITY,NOPARITY,ODDPARITY 0-4=no,odd,even,mark,space
public byte StopBits; // 指定端口当前使用的停止位数,可能为:ONESTOPBIT,ONE5STOPBITS,TWOSTOPBITS 0,1,2 = 1, 1.5, 2
public char XonChar; // 指定用于发送和接收字符XON的值 Tx and Rx XON character
public char XoffChar; // 指定用于发送和接收字符XOFF值 Tx and Rx XOFF character
public char ErrorChar; // 本字符用来代替接收到的奇偶校验发生错误时的值 error replacement character
public char EofChar; // 当没有使用二进制模式时,本字符可用来指示数据的结束 end of input character
public char EvtChar; // 当接收到此字符时,会产生一个事件 received event character
public ushort wReserved1; // 未使用 reserved; do not use
}
[StructLayout(LayoutKind.Sequential)]
private struct COMMTIMEOUTS
{
public int ReadIntervalTimeout;
public int ReadTotalTimeoutMultiplier;
public int ReadTotalTimeoutConstant;
public int WriteTotalTimeoutMultiplier;
public int WriteTotalTimeoutConstant;
}
[StructLayout(LayoutKind.Sequential)]
private struct OVERLAPPED
{
public int Internal;
public int InternalHigh;
public int Offset;
public int OffsetHigh;
public int hEvent;
}
[DllImport("coredll.dll")]
private static extern int CreateFile(
string lpFileName, // 要打开的串口名称
uint dwDesiredAccess, // 指定串口的访问方式,一般设置为可读可写方式
int dwShareMode, // 指定串口的共享模式,串口不能共享,所以设置为0
int lpSecurityAttributes, // 设置串口的安全属性,WIN9X下不支持,应设为NULL
int dwCreationDisposition, // 对于串口通信,创建方式只能为OPEN_EXISTING
int dwFlagsAndAttributes, // 指定串口属性与标志,设置为FILE_FLAG_OVERLAPPED(重叠I/O操作),指定串口以异步方式通信
int hTemplateFile // 对于串口通信必须设置为NULL
);
[DllImport("coredll.dll")]
private static extern bool GetCommState(
int hFile, //通信设备句柄
ref DCB lpDCB // 设备控制块DCB
);
[DllImport("coredll.dll")]
private static extern bool BuildCommDCB(
string lpDef, // 设备控制字符串
ref DCB lpDCB // 设备控制块
);
[DllImport("coredll.dll")]
private static extern bool SetCommState(
int hFile, // 通信设备句柄
ref DCB lpDCB // 设备控制块
);
[DllImport("coredll.dll")]
private static extern bool GetCommTimeouts(
int hFile, // 通信设备句柄 handle to comm device
ref COMMTIMEOUTS lpCommTimeouts // 超时时间 time-out values
);
[DllImport("coredll.dll")]
private static extern bool SetCommTimeouts(
int hFile, // 通信设备句柄 handle to comm device
ref COMMTIMEOUTS lpCommTimeouts // 超时时间 time-out values
);
[DllImport("coredll.dll")]
private static extern bool ReadFile(
int hFile, // 通信设备句柄 handle to file
byte[] lpBuffer, // 数据缓冲区 data buffer
int nNumberOfBytesToRead, // 多少字节等待读取 number of bytes to read
ref int lpNumberOfBytesRead, // 读取多少字节 number of bytes read
ref OVERLAPPED lpOverlapped // 溢出缓冲区 overlapped buffer
);
[DllImport("coredll.dll")]
private static extern bool WriteFile(
int hFile, // 通信设备句柄 handle to file
byte[] lpBuffer, // 数据缓冲区 data buffer
int nNumberOfBytesToWrite, // 多少字节等待写入 number of bytes to write
ref int lpNumberOfBytesWritten, // 已经写入多少字节 number of bytes written
ref OVERLAPPED lpOverlapped // 溢出缓冲区 overlapped buffer
);
[DllImport("coredll.dll")]
private static extern bool CloseHandle(
int hObject // handle to object
);
[DllImport("coredll.dll")]
private static extern uint GetLastError();
public void Open()
{
DCB dcbCommPort = new DCB();
COMMTIMEOUTS ctoCommPort = new COMMTIMEOUTS();
// 打开串口 OPEN THE COMM PORT.
hComm = CreateFile(PortNum, GENERIC_READ | GENERIC_WRITE, 0, 0, OPEN_EXISTING, 0, 0);
// 如果串口没有打开,就打开 IF THE PORT CANNOT BE OPENED, BAIL OUT.
if (hComm == INVALID_HANDLE_VALUE)
{
throw (new ApplicationException("非法操作,不能打开串口!"));
}
// 设置通信超时时间 SET THE COMM TIMEOUTS.
GetCommTimeouts(hComm, ref ctoCommPort);
ctoCommPort.ReadTotalTimeoutConstant = ReadTimeout;
ctoCommPort.ReadTotalTimeoutMultiplier = 0;
ctoCommPort.WriteTotalTimeoutMultiplier = 0;
ctoCommPort.WriteTotalTimeoutConstant = 0;
SetCommTimeouts(hComm, ref ctoCommPort);
// 设置串口 SET BAUD RATE, PARITY, WORD SIZE, AND STOP BITS.
GetCommState(hComm, ref dcbCommPort);
dcbCommPort.BaudRate = BaudRate;
dcbCommPort.flags = 0;
//dcb.fBinary=1;
dcbCommPort.flags |= 1;
if (Parity > 0)
{
//dcb.fParity=1
dcbCommPort.flags |= 2;
}
dcbCommPort.Parity = Parity;
dcbCommPort.ByteSize = ByteSize;
dcbCommPort.StopBits = StopBits;
if (!SetCommState(hComm, ref dcbCommPort))
{
//uint ErrorNum=GetLastError();
throw (new ApplicationException("非法操作,不能打开串口!"));
}
//unremark to see if setting took correctly
//DCB dcbCommPort2 = new DCB();
//GetCommState(hComm, ref dcbCommPort2);
Opened = true;
}
public void Close()
{
if (hComm != INVALID_HANDLE_VALUE)
{
CloseHandle(hComm);
}
}
public byte[] Read(int NumBytes)
{
byte[] BufBytes;
byte[] OutBytes;
BufBytes = new byte[NumBytes];
if (hComm != INVALID_HANDLE_VALUE)
{
OVERLAPPED ovlCommPort = new OVERLAPPED();
int BytesRead = 0;
ReadFile(hComm, BufBytes, NumBytes, ref BytesRead, ref ovlCommPort);
try
{
OutBytes = new byte[BytesRead];
Array.Copy(BufBytes, 0, OutBytes, 0, BytesRead);
}
catch
{
return BufBytes;
}
}
else
{
throw (new ApplicationException("串口未打开!"));
}
return OutBytes;
// return BufBytes;
}
public void Write(byte[] WriteBytes)
{
if (hComm != INVALID_HANDLE_VALUE)
{
OVERLAPPED ovlCommPort = new OVERLAPPED();
int BytesWritten = 0;
WriteFile(hComm, WriteBytes, WriteBytes.Length, ref BytesWritten, ref ovlCommPort);
}
else
{
throw (new ApplicationException("串口未打开!"));
}
}
public string GetGPS(string strGPS, string strFind)
{
///从GPS中读取的数据中,找出想要的数据
///GPSstring原始字符串,
///strFind要查找的内容,X:经度,Y:纬度,T:时间,V:速度,是数字从1开始,即以“,”分隔的位置
///返回查找到指定位置的字符串
string handerStr = "$GPRMC";//GPS串头
int findHander = strGPS.IndexOf(handerStr);//看是否含有GPS串头
if (findHander < 0)
{
return "-1";
}
else
{
strGPS = strGPS.Substring(findHander, strGPS.Length - findHander);
string[] ArryTmp = strGPS.Split(",".ToCharArray());
try
{
if (ArryTmp[2] == "V")
{
return "V";//没有信号
}
else
{
switch (strFind)
{
case "X":
return DM2DD(ArryTmp[5]);
case "Y":
return DM2DD(ArryTmp[3]);
case "T":
return T2Time(ArryTmp[9], ArryTmp[1]);
case "V":
return Convert.ToString(Convert.ToDouble(ArryTmp[7]) * 1.852);
default:
return "V";
}
}
}
catch
{
return "V";
}
}
}
public string T2Time(string strDate, string strTime)
{
string dT = "20" + strDate.Substring(4, 2) + "-" + strDate.Substring(2, 2) + "-" + strDate.Substring(0, 2);
string TT = Convert.ToString(Convert.ToInt32(strTime.Substring(0, 2))) + ":" + strTime.Substring(2, 2) + ":" + strTime.Substring(4, 2);
DateTime T = Convert.ToDateTime(dT + " " + TT);
T = T.AddHours(8);
return T.ToString();
}
public string DM2DD(string DegreeMinutes)
{
//转换NMEA协议的“度分”格式为十进制“度度”格式
string sDegree;
string sMinute;
string sReturn = "";
if (DegreeMinutes.IndexOf(".") == 4)
{
//DegreeMinutes = Replace(DegreeMinutes, ".", "")
//DM2DD = CDbl(Left(DegreeMinutes, 2)) + CDbl(Left(CStr(CDbl(Right(DegreeMinutes, Len(DegreeMinutes) - 2)) / 60), 8)) / 10000
DegreeMinutes = DegreeMinutes.Replace(".", "");
double sDegree1 = Convert.ToDouble(DegreeMinutes.Substring(0, 2));
double sDegree2 = Convert.ToDouble(DegreeMinutes.Substring(2, DegreeMinutes.Length - 2));
string sTmp = Convert.ToString(sDegree2 / 60);
sDegree2 = Convert.ToDouble(sTmp.Substring(0, sTmp.Length));
sDegree2 = sDegree2 / 10000;
sDegree = Convert.ToString(sDegree1 + sDegree2);
if (sDegree.Length > 11)
sDegree = sDegree.Substring(0, 11);
sReturn = sDegree;
}
else if (DegreeMinutes.IndexOf(".") == 5)
{
//DegreeMinutes = Replace(DegreeMinutes, ".", "")
//DM2DD = CDbl(Left(DegreeMinutes, 2)) + CDbl(Left(CStr(CDbl(Right(DegreeMinutes, Len(DegreeMinutes) - 2)) / 60), 8)) / 10000
DegreeMinutes = DegreeMinutes.Replace(".", "");
double sMinute1 = Convert.ToDouble(DegreeMinutes.Substring(0, 3));
double sMinute2 = Convert.ToDouble(DegreeMinutes.Substring(3, DegreeMinutes.Length - 2));
string sTmp = Convert.ToString(sMinute2 / 60);
sMinute2 = Convert.ToDouble(sTmp.Substring(0, sTmp.Length));
sMinute2 = sMinute2 / 10000;
sMinute = Convert.ToString(sMinute1 + sMinute2);
if (sMinute.Length > 10)
sMinute = sMinute.Substring(0, 10);
sReturn = sMinute;
}
return sReturn;
}
public bool ScanPort()
{
try
{
if (Opened)
{
Close();
Open();
}
else
{
Open();//打开串口
}
byte[] bytRead = Read(512);
Close();
if (Encoding.ASCII.GetString(bytRead, 0, bytRead.Length).IndexOf("$GP") >= 0)
return true;
else
return false;
}
catch
{
return false;
}
}
}
class HexCon
{
// 把十六进制字符串转换成字节型和把字节型转换成十六进制字符串 converter hex string to byte and byte to hex string
public static string ByteToString(byte[] InBytes)
{
string StringOut = "";
foreach (byte InByte in InBytes)
{
StringOut = StringOut + String.Format("{0:X2} ", InByte);
}
return StringOut;
}
public static byte[] StringToByte(string InString)
{
string[] ByteStrings;
ByteStrings = InString.Split(" ".ToCharArray());
byte[] ByteOut;
ByteOut = new byte[ByteStrings.Length - 1];
for (int i = 0; i == ByteStrings.Length - 1; i++)
{
ByteOut[i] = Convert.ToByte(("0x" + ByteStrings[i]));
}
return ByteOut;
}
}