Source code of Windows XP (NT5)
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 

277 lines
7.0 KiB

#include <windows.h>
#include <stdio.h>
//#define COM_DEB 1
#define NUM 128
#define print printf
#define SETTINGS1 "COM1",9600,8,NOPARITY,ONESTOPBIT
#define SETTINGS15 "COM1",9600,8,NOPARITY,ONE5STOPBITS
#define SETTINGS2 "COM1",4800,8,NOPARITY,ONESTOPBIT
#define SETTINGS3 "COM1",2400,8,NOPARITY,ONESTOPBIT
#define SETTINGS4 "COM1",1200,8,NOPARITY,ONESTOPBIT
BOOL DoComIo(LPSTR lpCom,DWORD Baud,BYTE Size,BYTE Parity,BYTE Stop);
DWORD main(int argc, char *argv[], char *envp[])
{
BOOL bRc;
UNREFERENCED_PARAMETER(argc);
UNREFERENCED_PARAMETER(argv);
UNREFERENCED_PARAMETER(envp);
print("\n\n *** Doing COM TEST with [port=%s Baud=%d,Size=%d,Parity=%d,Stop=%d]***\n\n",
SETTINGS1);
bRc = DoComIo(SETTINGS1);
if (!bRc) {
print("\n\nCOM TEST FAILED********************************\n\n");
}
print("\n\n *** Doing COM TEST with [port=%s Baud=%d,Size=%d,Parity=%d,Stop=%d]***\n\n",
SETTINGS15);
bRc = DoComIo(SETTINGS15);
if (!bRc) {
print("\n\nCOM TEST FAILED********************************\n\n");
}
print("\n\n *** Doing COM TEST with [port=%s Baud=%d,Size=%d,Parity=%d,Stop=%d]***\n\n",
SETTINGS2);
bRc = DoComIo(SETTINGS2);
if (!bRc) {
print("\n\nCOM TEST FAILED********************************\n\n");
}
print("\n\n *** Doing COM TEST with [port=%s Baud=%d,Size=%d,Parity=%d,Stop=%d]***\n\n",
SETTINGS3);
bRc = DoComIo(SETTINGS3);
if (!bRc) {
print("\n\nCOM TEST FAILED********************************\n\n");
}
print("\n\n *** Doing COM TEST with [port=%s Baud=%d,Size=%d,Parity=%d,Stop=%d]***\n\n",
SETTINGS4);
bRc = DoComIo(SETTINGS4);
if (!bRc) {
print("\n\nCOM TEST FAILED********************************\n\n");
}
return 0;
}
BOOL DoComIo(LPSTR lpCom,DWORD Baud,BYTE Size,BYTE Parity,BYTE Stop)
{
CHAR WrBuffer[NUM];
CHAR RdBuffer[NUM];
DWORD i;
HANDLE hCommPort;
DCB dcb;
BOOL bRc;
DWORD dwNumWritten,dwNumRead,dwErrors;
print("\n\n *** COMM TEST START [port=%s,Baud=%d,Size=%d,Parity=%d,Stop=%d]***\n\n",
lpCom,Baud,Size,Parity,Stop);
print("Opening the comm port for read write\n");
hCommPort = CreateFile(
lpCom,
GENERIC_READ|GENERIC_WRITE,
0, // exclusive
NULL, // sec attr
OPEN_EXISTING,
0, // no attributes
NULL); // no template
if (hCommPort == (HANDLE)-1)
{
print("FAIL: OpenComm failed rc: %lx\n",hCommPort);
return FALSE;
}
print("Opening the comm port for read write: SUCCESS hCommPort=%lx\n",hCommPort);
print("Setting the line characteristics on comm \n");
if(!GetCommState(
hCommPort,
&dcb
)) {
printf("Could not get the state of the comm port: %d\n",GetLastError());
return FALSE;
}
dcb.DCBlength = sizeof(DCB);
// dcb.DCBversion = 0x0002;
dcb.BaudRate = Baud;
dcb.ByteSize = Size;
dcb.Parity = Parity;
dcb.StopBits = Stop;
//dcb.RlsTimeout = 10000; 10sec
//dcb.CtsTimeout = 10000; 10sec
//dcb.DsrTimeout = 10000; 10sec
dcb.fBinary = 1; // binary data xmit
dcb.fParity = 0; // dont bother about parity
dcb.fOutxCtsFlow= 0; // no cts flow control
dcb.fOutxDsrFlow= 0; // no dsr flow control
dcb.fDtrControl = DTR_CONTROL_DISABLE; // dont bother about dtr
dcb.fRtsControl = RTS_CONTROL_DISABLE; // dont bother about dtr
dcb.fOutX =0; // disable xoff handling
dcb.fInX =0; // disable xon handling
dcb.fErrorChar = 0; // forget about parity char
dcb.fNull = 0; // forget about the null striping
//dcb.fChEvt = 0; forget about event char
bRc = SetCommState(hCommPort,&dcb);
if (!bRc)
{
print("FAIL: cannot set the comm state rc:%lx\n",bRc);
bRc = CloseHandle(hCommPort);
if (!bRc)
{
print("FAIL: cannot close the comm port:%lx\n",bRc);
}
return FALSE;
}
print("Setting the line characteristics on comm: SUCCESS\n");
print("Filling the buffer with the known chars \n");
for (i=0; i< NUM; i++)
{
//WrBuffer[i] = 'a';
WrBuffer[i] = (CHAR)i;
}
print("Filling the buffer with the known chars : SUCCESS\n");
#ifdef COM_DEB
print("Dumping the buffer before sending it to comm\n");
for (i=0; i< NUM; i++)
{
//print("%c",RdBuffer[i]);
print(" %d ",WrBuffer[i]);
}
print("\nDumping the buffer before sending it to comm SUCCESS\n");
#endif
print("Filling the Rdbuffer with the known chars (0xFF) to makeit dirty\n");
for (i=0; i< NUM; i++)
{
RdBuffer[i] = (CHAR)'0xFF';
}
print("Filling the Rdbuffer with the known chars (0xFF): SUCCESS\n");
print("Writting this buffer to the comm port\n");
bRc = WriteFile( hCommPort,
WrBuffer,
NUM,
&dwNumWritten,
NULL);
if (!bRc)
{
print("FAIL: cannot Write To the comm port:%lx\n",bRc);
bRc = CloseHandle(hCommPort);
if (!bRc)
{
print("FAIL: cannot close the comm port:%lx\n",bRc);
}
return FALSE;
}
print("Writting this buffer to the comm port: SUCCESS rc:%lx, byteswritten:%lx\n",
bRc,dwNumWritten);
print("Reading this buffer from the comm port\n");
bRc = ReadFile( hCommPort,
RdBuffer,
NUM,
&dwNumRead,
NULL);
if (!bRc)
{
print("FAIL: cannot Read From the comm port:%lx\n",bRc);
bRc = CloseHandle(hCommPort);
if (!bRc)
{
print("FAIL: cannot close the comm port:%lx\n",bRc);
}
return FALSE;
}
print("Reading this buffer from the comm port: SUCCESS rc:%lx, bytesread:%lx\n",
bRc,dwNumRead);
#ifdef COM_DEB
print("Dumping the Rdbuffer with the comm data\n");
for (i=0; i< NUM; i++)
{
//print("%c",RdBuffer[i]);
print(" %d ",RdBuffer[i]);
}
print("\nDumping the Rdbuffer with the comm data: SUCCESS\n");
#endif
print("Comparing the rd and wr buffers\n");
for (i=0; i< NUM; i++)
{
if (RdBuffer[i] != WrBuffer[i])
{
print("FAIL: BufferMisMatch: RdBuffer[%d]=%lx,WrBuffer[%d]=%lx\n",
i,RdBuffer[i],i,WrBuffer[i]);
bRc = CloseHandle(hCommPort);
if (!bRc)
{
print("FAIL: cannot close the comm port:%lx\n",bRc);
}
return FALSE;
}
}
print("Comparing the rd and wr buffers: SUCCESS\n");
bRc = ClearCommError(hCommPort,&dwErrors,NULL);
print("ClearCommError: rc= %lx and dwErrors=%lx\n",bRc,dwErrors);
//bRc = PurgeComm(hCommPort,0);
print("BYPASS PurgeComm BUG (%lx,0) rc = %lx\n",hCommPort,bRc);
print("Closing the comm port\n");
bRc = CloseHandle(hCommPort);
if (!bRc)
{
print("FAIL: cannot close the comm port:%lx\n",bRc);
return FALSE;
}
print("\n\n*** COMM TEST OVER*** \n\n");
}