ReactOS 0.4.15-dev-8191-gbc6c731
rs232.c File Reference
#include <windows.h>
#include <winioctl.h>
#include <tchar.h>
#include <stdio.h>
#include "rs232.h"
Include dependency graph for rs232.c:

Go to the source code of this file.

Functions

BOOL Rs232OpenPortWin32 (TCHAR *CommPort)
 
BOOL Rs232ClosePortWin32 (VOID)
 
BOOL Rs232ConfigurePortWin32 (TCHAR *DeviceControlString)
 
BOOL Rs232SetCommunicationTimeoutsWin32 (DWORD ReadIntervalTimeout, DWORD ReadTotalTimeoutMultiplier, DWORD ReadTotalTimeoutConstant, DWORD WriteTotalTimeoutMultiplier, DWORD WriteTotalTimeoutConstant)
 
BOOL Rs232ReadByteWin32 (BYTE *DataByte)
 
BOOL Rs232WriteByteWin32 (BYTE DataByte)
 

Variables

HANDLE hPortHandle = NULL
 

Function Documentation

◆ Rs232ClosePortWin32()

BOOL Rs232ClosePortWin32 ( VOID  )

Definition at line 68 of file rs232.c.

69{
70 HANDLE hTempPortHandle = hPortHandle;
71
73
74 if (hTempPortHandle == NULL)
75 {
76 return FALSE;
77 }
78
79 return CloseHandle(hTempPortHandle);
80}
#define NULL
Definition: types.h:112
#define FALSE
Definition: types.h:117
#define CloseHandle
Definition: compat.h:739
HANDLE hPortHandle
Definition: rs232.c:29

Referenced by Rs232Thread().

◆ Rs232ConfigurePortWin32()

BOOL Rs232ConfigurePortWin32 ( TCHAR DeviceControlString)

Definition at line 96 of file rs232.c.

97{
98 DCB dcb;
100
101#if 0
102 if (!GetCommState(hPortHandle, &dcb))
103 {
105
106 _tprintf(TEXT("GetCommState() failed. GetLastError() = %lu.\n"), ErrorCode);
107
108 return FALSE;
109 }
110
111 dcb.BaudRate = BaudRate;
112 dcb.ByteSize = DataBits;
113 dcb.Parity = Parity;
114 dcb.StopBits = StopBits;
115 dcb.fBinary = TRUE;
116 dcb.fDsrSensitivity = FALSE;
117 dcb.fParity = (Parity == NOPARITY) ? FALSE : TRUE;
118 dcb.fOutX = FALSE;
119 dcb.fInX = FALSE;
120 dcb.fNull = FALSE;
121 dcb.fAbortOnError = TRUE;
122 dcb.fOutxCtsFlow = FALSE;
123 dcb.fOutxDsrFlow = FALSE;
124 dcb.fDtrControl = DTR_CONTROL_DISABLE;
125 dcb.fDsrSensitivity = FALSE;
126 dcb.fRtsControl = RTS_CONTROL_DISABLE;
127 dcb.fOutxCtsFlow = FALSE;
128 dcb.fOutxCtsFlow = FALSE;
129#endif
130
131 ZeroMemory(&dcb, sizeof(dcb));
132 dcb.DCBlength = sizeof(dcb);
133 if (!BuildCommDCB(DeviceControlString, &dcb))
134 {
136
137 _tprintf(TEXT("BuildCommDCB() failed. GetLastError() = %lu.\n"), ErrorCode);
138
139 return FALSE;
140 }
141
142 if (!SetCommState(hPortHandle, &dcb))
143 {
145
146 _tprintf(TEXT("SetCommState() failed. GetLastError() = %lu.\n"), ErrorCode);
147
148 return FALSE;
149 }
150
151 // Set the timeouts
153 {
154 return FALSE;
155 }
156
157 return TRUE;
158}
#define TRUE
Definition: types.h:120
BOOL WINAPI SetCommState(HANDLE handle, LPDCB lpdcb)
Definition: comm.c:807
BOOL WINAPI GetCommState(HANDLE handle, LPDCB lpdcb)
Definition: comm.c:904
PWSTR StopBits[]
Definition: serial.c:37
PWSTR DataBits[]
Definition: serial.c:36
BOOL Rs232SetCommunicationTimeoutsWin32(DWORD ReadIntervalTimeout, DWORD ReadTotalTimeoutMultiplier, DWORD ReadTotalTimeoutConstant, DWORD WriteTotalTimeoutMultiplier, DWORD WriteTotalTimeoutConstant)
Definition: rs232.c:183
unsigned long DWORD
Definition: ntddk_ex.h:95
#define _tprintf
Definition: tchar.h:506
#define TEXT(s)
Definition: k32.h:26
_In_ NDIS_ERROR_CODE ErrorCode
Definition: ndis.h:4436
#define MAXDWORD
Definition: cdstruc.h:902
#define ZeroMemory
Definition: winbase.h:1712
DWORD WINAPI GetLastError(void)
Definition: except.c:1042
#define DTR_CONTROL_DISABLE
Definition: winbase.h:533
#define RTS_CONTROL_DISABLE
Definition: winbase.h:536
#define BuildCommDCB
Definition: winbase.h:3733
#define NOPARITY
Definition: winbase.h:453

Referenced by Rs232Thread().

◆ Rs232OpenPortWin32()

BOOL Rs232OpenPortWin32 ( TCHAR CommPort)

Definition at line 32 of file rs232.c.

33{
36
37 // First check and make sure they don't already have the
38 // OBD2 connection open. We don't want to open things twice.
39 if (hPortHandle != NULL)
40 {
41 _tprintf(TEXT("Port handle not NULL. Must be already open. Returning FALSE...\n"));
42 return FALSE;
43 }
44
45 _stprintf(PortName, TEXT("\\\\.\\%s"), CommPort);
46
49 0,
50 0,
52 0,
53 0);
54
56 {
59
60 _tprintf(TEXT("CreateFile(\"%s\") failed. GetLastError() = %lu.\n"), PortName, ErrorCode);
61
62 return FALSE;
63 }
64
65 return TRUE;
66}
static UNICODE_STRING PortName
#define OPEN_EXISTING
Definition: compat.h:775
#define INVALID_HANDLE_VALUE
Definition: compat.h:731
#define GENERIC_READ
Definition: compat.h:135
#define MAX_PATH
Definition: compat.h:34
#define _stprintf
Definition: utility.h:124
#define GENERIC_WRITE
Definition: nt_native.h:90
#define CreateFile
Definition: winbase.h:3749
char TCHAR
Definition: xmlstorage.h:189

Referenced by Rs232Thread().

◆ Rs232ReadByteWin32()

BOOL Rs232ReadByteWin32 ( BYTE DataByte)

Definition at line 215 of file rs232.c.

216{
217 DWORD BytesRead = 0;
219
220 // If ReadFile() fails then report error
221 if (!ReadFile(hPortHandle, DataByte, 1, &BytesRead, NULL))
222 {
224
225 _tprintf(TEXT("ReadFile() failed. GetLastError() = %lu.\n"), ErrorCode);
226
227 return FALSE;
228 }
229
230 // If ReadFile() succeeds, but BytesRead isn't 1
231 // then a timeout occurred.
232 if (BytesRead != 1)
233 {
234 return FALSE;
235 }
236
237 return TRUE;
238}
#define ReadFile(a, b, c, d, e)
Definition: compat.h:742
_Must_inspect_result_ _In_ WDFIOTARGET _In_opt_ WDFREQUEST _In_opt_ PWDF_MEMORY_DESCRIPTOR _In_opt_ PLONGLONG _In_opt_ PWDF_REQUEST_SEND_OPTIONS _Out_opt_ PULONG_PTR BytesRead
Definition: wdfiotarget.h:870

Referenced by Rs232Thread().

◆ Rs232SetCommunicationTimeoutsWin32()

BOOL Rs232SetCommunicationTimeoutsWin32 ( DWORD  ReadIntervalTimeout,
DWORD  ReadTotalTimeoutMultiplier,
DWORD  ReadTotalTimeoutConstant,
DWORD  WriteTotalTimeoutMultiplier,
DWORD  WriteTotalTimeoutConstant 
)

Definition at line 183 of file rs232.c.

184{
185 COMMTIMEOUTS ct;
187
188 if (!GetCommTimeouts(hPortHandle, &ct))
189 {
191
192 _tprintf(TEXT("GetCommTimeouts() failed. GetLastError() = %lu.\n"), ErrorCode);
193
194 return FALSE;
195 }
196
197 ct.ReadIntervalTimeout = ReadIntervalTimeout;
198 ct.ReadTotalTimeoutConstant = ReadTotalTimeoutConstant;
199 ct.ReadTotalTimeoutMultiplier = ReadTotalTimeoutMultiplier;
200 ct.WriteTotalTimeoutConstant = WriteTotalTimeoutConstant;
201 ct.WriteTotalTimeoutMultiplier = WriteTotalTimeoutMultiplier;
202
203 if (!SetCommTimeouts(hPortHandle, &ct))
204 {
206
207 _tprintf(TEXT("SetCommTimeouts() failed. GetLastError() = %lu.\n"), ErrorCode);
208
209 return FALSE;
210 }
211
212 return TRUE;
213}
BOOL WINAPI SetCommTimeouts(HANDLE hComm, LPCOMMTIMEOUTS lptimeouts)
Definition: comm.c:1062
BOOL WINAPI GetCommTimeouts(HANDLE hComm, LPCOMMTIMEOUTS lptimeouts)
Definition: comm.c:1020
DWORD WriteTotalTimeoutConstant
Definition: winbase.h:713
DWORD ReadTotalTimeoutMultiplier
Definition: winbase.h:710
DWORD ReadTotalTimeoutConstant
Definition: winbase.h:711
DWORD ReadIntervalTimeout
Definition: winbase.h:709
DWORD WriteTotalTimeoutMultiplier
Definition: winbase.h:712

Referenced by Rs232ConfigurePortWin32().

◆ Rs232WriteByteWin32()

BOOL Rs232WriteByteWin32 ( BYTE  DataByte)

Definition at line 240 of file rs232.c.

241{
245
246 Success = WriteFile(hPortHandle, &DataByte, 1, &BytesWritten, NULL);
247
248 if (!Success || BytesWritten != 1)
249 {
251
252 _tprintf(TEXT("WriteFile() failed. GetLastError() = %lu.\n"), ErrorCode);
253
254 return FALSE;
255 }
256
257 return TRUE;
258}
BOOL WINAPI WriteFile(IN HANDLE hFile, IN LPCVOID lpBuffer, IN DWORD nNumberOfBytesToWrite OPTIONAL, OUT LPDWORD lpNumberOfBytesWritten, IN LPOVERLAPPED lpOverlapped OPTIONAL)
Definition: rw.c:24
@ Success
Definition: eventcreate.c:712
unsigned int BOOL
Definition: ntddk_ex.h:94
_Must_inspect_result_ _In_ WDFIOTARGET _In_opt_ WDFREQUEST _In_opt_ PWDF_MEMORY_DESCRIPTOR _In_opt_ PLONGLONG _In_opt_ PWDF_REQUEST_SEND_OPTIONS _Out_opt_ PULONG_PTR BytesWritten
Definition: wdfiotarget.h:960

Referenced by Rs232Thread().

Variable Documentation

◆ hPortHandle