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