近日一个项目需要用在PDA上读取GPS卫星信号,在网上搜了一圈,整理出一个GPS的类,大家可以直接加入项目
使用。可以获得当前的经纬度、海拔、速度、连接卫星数等信息
Code
1using System;
2using System.Collections.Generic;
3using System.Text;
4using System.Runtime.InteropServices;
5
6namespace AnhlYiling
7{
8 public class GPS
9 {
10
11 public string PortNum;
12 public int BaudRate;
13 public byte ByteSize;
14 public byte Parity; // 0-4=no,odd,even,mark,space
15 public byte StopBits; // 0,1,2 = 1, 1.5, 2
16 public int ReadTimeout;
17
18 //comm port win32 file handle
19 private int hComm = -1;
20
21 public bool Opened = false;
22
23 //win32 api constants
24 private const uint GENERIC_READ = 0x80000000;
25 private const uint GENERIC_WRITE = 0x40000000;
26 private const int OPEN_EXISTING = 3;
27 private const int INVALID_HANDLE_VALUE = -1;
28
29 [StructLayout(LayoutKind.Sequential)]
30 public struct DCB
31 {
32 //taken from c struct in platform sdk
33 public int DCBlength; // sizeof(DCB)
34 public int BaudRate; // 指定当前波特率 current baud rate
35 // these are the c struct bit fields, bit twiddle flag to set
36 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
37 public int fParity; // 指定是否允许奇偶校验 enable parity checking
38 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
39 public int fOutxDsrFlow; // 指定CTS是否用于检测发送控制 DSR output flow control
40 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
41 public int fDsrSensitivity; // 当该值为TRUE时DSR为OFF时接收的字节被忽略 DSR sensitivity
42 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
43 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
44 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
45 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
46 public int fNull; // eTRUE时,接收时去掉空(0值)字节 enable null stripping
47 public int fRtsControl; // RTS flow control
48 /**//*RTS_CONTROL_DISABLE时,RTS置为OFF
49 RTS_CONTROL_ENABLE时, RTS置为ON
50 RTS_CONTROL_HANDSHAKE时,
51 当接收缓冲区小于半满时RTS为ON
52 当接收缓冲区超过四分之三满时RTS为OFF
53 RTS_CONTROL_TOGGLE时,
54 当接收缓冲区仍有剩余字节时RTS为ON ,否则缺省为OFF*/
55
56 public int fAbortOnError; // TRUE时,有错误发生时中止读和写操作 abort on error
57 public int fDummy2; // 未使用 reserved
58
59 public uint flags;
60 public ushort wReserved; // 未使用,必须为0 not currently used
61 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
62 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
63 public byte ByteSize; // 指定端口当前使用的数据位 number of bits/byte, 4-8
64 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
65 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
66 public char XonChar; // 指定用于发送和接收字符XON的值 Tx and Rx XON character
67 public char XoffChar; // 指定用于发送和接收字符XOFF值 Tx and Rx XOFF character
68 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
69 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
70 public char EvtChar; // 当接收到此字符时,会产生一个事件 received event character
71 public ushort wReserved1; // 未使用 reserved; do not use
72 }
73
74 [StructLayout(LayoutKind.Sequential)]
75 private struct COMMTIMEOUTS
76 {
77 public int ReadIntervalTimeout;
78 public int ReadTotalTimeoutMultiplier;
79 public int ReadTotalTimeoutConstant;
80 public int WriteTotalTimeoutMultiplier;
81 public int WriteTotalTimeoutConstant;
82 }
83
84 [StructLayout(LayoutKind.Sequential)]
85 private struct OVERLAPPED
86 {
87 public int Internal;
88 public int InternalHigh;
89 public int Offset;
90 public int OffsetHigh;
91 public int hEvent;
92 }
93
94 [DllImport("coredll.dll")]
95 private static extern int CreateFile(
96 string lpFileName, // 要打开的串口名称
97 uint dwDesiredAccess, // 指定串口的访问方式,一般设置为可读可写方式
98 int dwShareMode, // 指定串口的共享模式,串口不能共享,所以设置为0
99 int lpSecurityAttributes, // 设置串口的安全属性,WIN9X下不支持,应设为NULL
100 int dwCreationDisposition, // 对于串口通信,创建方式只能为OPEN_EXISTING
101 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
102 int hTemplateFile // 对于串口通信必须设置为NULL
103 );
104 [DllImport("coredll.dll")]
105 private static extern bool GetCommState(
106 int hFile, //通信设备句柄
107 ref DCB lpDCB // 设备控制块DCB
108 );
109 [DllImport("coredll.dll")]
110 private static extern bool BuildCommDCB(
111 string lpDef, // 设备控制字符串
112 ref DCB lpDCB // 设备控制块
113 );
114 [DllImport("coredll.dll")]
115 private static extern bool SetCommState(
116 int hFile, // 通信设备句柄
117 ref DCB lpDCB // 设备控制块
118 );
119 [DllImport("coredll.dll")]
120 private static extern bool GetCommTimeouts(
121 int hFile, // 通信设备句柄 handle to comm device
122 ref COMMTIMEOUTS lpCommTimeouts // 超时时间 time-out values
123 );
124 [DllImport("coredll.dll")]
125 private static extern bool SetCommTimeouts(
126 int hFile, // 通信设备句柄 handle to comm device
127 ref COMMTIMEOUTS lpCommTimeouts // 超时时间 time-out values
128 );
129 [DllImport("coredll.dll")]
130 private static extern bool ReadFile(
131 int hFile, // 通信设备句柄 handle to file
132 byte[] lpBuffer, // 数据缓冲区 data buffer
133 int nNumberOfBytesToRead, // 多少字节等待读取 number of bytes to read
134 ref int lpNumberOfBytesRead, // 读取多少字节 number of bytes read
135 ref OVERLAPPED lpOverlapped // 溢出缓冲区 overlapped buffer
136 );
137 [DllImport("coredll.dll")]
138 private static extern bool WriteFile(
139 int hFile, // 通信设备句柄 handle to file
140 byte[] lpBuffer, // 数据缓冲区 data buffer
141 int nNumberOfBytesToWrite, // 多少字节等待写入 number of bytes to write
142 ref int lpNumberOfBytesWritten, // 已经写入多少字节 number of bytes written
143 ref OVERLAPPED lpOverlapped // 溢出缓冲区 overlapped buffer
144 );
145 [DllImport("coredll.dll")]
146 private static extern bool CloseHandle(
147 int hObject // handle to object
148 );
149 [DllImport("coredll.dll")]
150 private static extern uint GetLastError();
151
152
1using System;
2using System.Collections.Generic;
3using System.Text;
4using System.Runtime.InteropServices;
5
6namespace AnhlYiling
7{
8 public class GPS
9 {
10
11 public string PortNum;
12 public int BaudRate;
13 public byte ByteSize;
14 public byte Parity; // 0-4=no,odd,even,mark,space
15 public byte StopBits; // 0,1,2 = 1, 1.5, 2
16 public int ReadTimeout;
17
18 //comm port win32 file handle
19 private int hComm = -1;
20
21 public bool Opened = false;
22
23 //win32 api constants
24 private const uint GENERIC_READ = 0x80000000;
25 private const uint GENERIC_WRITE = 0x40000000;
26 private const int OPEN_EXISTING = 3;
27 private const int INVALID_HANDLE_VALUE = -1;
28
29 [StructLayout(LayoutKind.Sequential)]
30 public struct DCB
31 {
32 //taken from c struct in platform sdk
33 public int DCBlength; // sizeof(DCB)
34 public int BaudRate; // 指定当前波特率 current baud rate
35 // these are the c struct bit fields, bit twiddle flag to set
36 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
37 public int fParity; // 指定是否允许奇偶校验 enable parity checking
38 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
39 public int fOutxDsrFlow; // 指定CTS是否用于检测发送控制 DSR output flow control
40 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
41 public int fDsrSensitivity; // 当该值为TRUE时DSR为OFF时接收的字节被忽略 DSR sensitivity
42 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
43 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
44 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
45 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
46 public int fNull; // eTRUE时,接收时去掉空(0值)字节 enable null stripping
47 public int fRtsControl; // RTS flow control
48 /**//*RTS_CONTROL_DISABLE时,RTS置为OFF
49 RTS_CONTROL_ENABLE时, RTS置为ON
50 RTS_CONTROL_HANDSHAKE时,
51 当接收缓冲区小于半满时RTS为ON
52 当接收缓冲区超过四分之三满时RTS为OFF
53 RTS_CONTROL_TOGGLE时,
54 当接收缓冲区仍有剩余字节时RTS为ON ,否则缺省为OFF*/
55
56 public int fAbortOnError; // TRUE时,有错误发生时中止读和写操作 abort on error
57 public int fDummy2; // 未使用 reserved
58
59 public uint flags;
60 public ushort wReserved; // 未使用,必须为0 not currently used
61 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
62 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
63 public byte ByteSize; // 指定端口当前使用的数据位 number of bits/byte, 4-8
64 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
65 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
66 public char XonChar; // 指定用于发送和接收字符XON的值 Tx and Rx XON character
67 public char XoffChar; // 指定用于发送和接收字符XOFF值 Tx and Rx XOFF character
68 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
69 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
70 public char EvtChar; // 当接收到此字符时,会产生一个事件 received event character
71 public ushort wReserved1; // 未使用 reserved; do not use
72 }
73
74 [StructLayout(LayoutKind.Sequential)]
75 private struct COMMTIMEOUTS
76 {
77 public int ReadIntervalTimeout;
78 public int ReadTotalTimeoutMultiplier;
79 public int ReadTotalTimeoutConstant;
80 public int WriteTotalTimeoutMultiplier;
81 public int WriteTotalTimeoutConstant;
82 }
83
84 [StructLayout(LayoutKind.Sequential)]
85 private struct OVERLAPPED
86 {
87 public int Internal;
88 public int InternalHigh;
89 public int Offset;
90 public int OffsetHigh;
91 public int hEvent;
92 }
93
94 [DllImport("coredll.dll")]
95 private static extern int CreateFile(
96 string lpFileName, // 要打开的串口名称
97 uint dwDesiredAccess, // 指定串口的访问方式,一般设置为可读可写方式
98 int dwShareMode, // 指定串口的共享模式,串口不能共享,所以设置为0
99 int lpSecurityAttributes, // 设置串口的安全属性,WIN9X下不支持,应设为NULL
100 int dwCreationDisposition, // 对于串口通信,创建方式只能为OPEN_EXISTING
101 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
102 int hTemplateFile // 对于串口通信必须设置为NULL
103 );
104 [DllImport("coredll.dll")]
105 private static extern bool GetCommState(
106 int hFile, //通信设备句柄
107 ref DCB lpDCB // 设备控制块DCB
108 );
109 [DllImport("coredll.dll")]
110 private static extern bool BuildCommDCB(
111 string lpDef, // 设备控制字符串
112 ref DCB lpDCB // 设备控制块
113 );
114 [DllImport("coredll.dll")]
115 private static extern bool SetCommState(
116 int hFile, // 通信设备句柄
117 ref DCB lpDCB // 设备控制块
118 );
119 [DllImport("coredll.dll")]
120 private static extern bool GetCommTimeouts(
121 int hFile, // 通信设备句柄 handle to comm device
122 ref COMMTIMEOUTS lpCommTimeouts // 超时时间 time-out values
123 );
124 [DllImport("coredll.dll")]
125 private static extern bool SetCommTimeouts(
126 int hFile, // 通信设备句柄 handle to comm device
127 ref COMMTIMEOUTS lpCommTimeouts // 超时时间 time-out values
128 );
129 [DllImport("coredll.dll")]
130 private static extern bool ReadFile(
131 int hFile, // 通信设备句柄 handle to file
132 byte[] lpBuffer, // 数据缓冲区 data buffer
133 int nNumberOfBytesToRead, // 多少字节等待读取 number of bytes to read
134 ref int lpNumberOfBytesRead, // 读取多少字节 number of bytes read
135 ref OVERLAPPED lpOverlapped // 溢出缓冲区 overlapped buffer
136 );
137 [DllImport("coredll.dll")]
138 private static extern bool WriteFile(
139 int hFile, // 通信设备句柄 handle to file
140 byte[] lpBuffer, // 数据缓冲区 data buffer
141 int nNumberOfBytesToWrite, // 多少字节等待写入 number of bytes to write
142 ref int lpNumberOfBytesWritten, // 已经写入多少字节 number of bytes written
143 ref OVERLAPPED lpOverlapped // 溢出缓冲区 overlapped buffer
144 );
145 [DllImport("coredll.dll")]
146 private static extern bool CloseHandle(
147 int hObject // handle to object
148 );
149 [DllImport("coredll.dll")]
150 private static extern uint GetLastError();
151
152