rosapps/tests/sertest/sertest.c

   1 #include <windows.h>
   2 #include <stdio.h>
   3
   4 #include <tchar.h>
   5
   6 #define BUFSIZE 128
   7 #define MAX_PORTNAME_LEN 20
   8 #define APP_VERSION_STR "0.01"
   9
  10 int main(int argc, char *argv[])
  11 {
  12     CHAR txBuffer[BUFSIZE];
  13     CHAR rxBuffer[BUFSIZE];
  14     DWORD dwBaud = 9600;
  15     DWORD dwNumWritten;
  16     DWORD dwErrors;
  17     DCB dcb;
  18     BOOL bResult;
  19     HANDLE hPort;
  20     int i;
  21     int j;
  22     int k;
  23         int nPortNum = 1;
  24
  25         TCHAR szPortName[MAX_PORTNAME_LEN];
  26
  27     if (argc > 1) {
  28         //sscanf(argv[1], "%d", &dwBaud);
  29         sscanf(argv[1], "%d", &nPortNum);
  30     }
  31         sprintf(szPortName, _T("COM%d"), nPortNum);
  32
  33     printf("Serial Port Test Application Version %s\n", APP_VERSION_STR);
  34     printf("Attempting to open serial port %d - %s\n", nPortNum, szPortName);
  35     hPort = CreateFile(szPortName,
  36                        GENERIC_READ|GENERIC_WRITE,
  37                        0,     // exclusive
  38                        NULL,  // sec attr
  39                        OPEN_EXISTING,
  40                        0,     // no attributes
  41                        NULL); // no template
  42
  43     if (hPort == (HANDLE)-1) {
  44         printf("ERROR: CreateFile() failed with result: %lx\n", (DWORD)hPort);
  45         return 1;
  46     }
  47     printf("CreateFile() returned: %lx\n", (DWORD)hPort);
  48
  49     printf("Fiddling with DTR and RTS control lines...\n");
  50         for (i = 0; i < 100; i++) {
  51         bResult = EscapeCommFunction(hPort, SETDTR);
  52     if (!bResult) {
  53         printf("WARNING: EscapeCommFunction(SETDTR) failed: %lx\n", (DWORD)bResult);
  54     }
  55         bResult = EscapeCommFunction(hPort, SETRTS);
  56     if (!bResult) {
  57         printf("WARNING: EscapeCommFunction(SETRTS) failed: %lx\n", (DWORD)bResult);
  58     }
  59         for (j = 0; j < 1000; j++) {
  60                 k *= j;
  61         }
  62 /*
  63 #define CLRDTR  (6)
  64 #define CLRRTS  (4)
  65 #define SETDTR  (5)
  66 #define SETRTS  (3)
  67 #define SETXOFF (1)
  68 #define SETXON  (2)
  69 #define SETBREAK        (8)
  70 #define CLRBREAK        (9)
  71  */
  72         bResult = EscapeCommFunction(hPort, CLRDTR);
  73     if (!bResult) {
  74         printf("WARNING: EscapeCommFunction(CLRDTR) failed: %lx\n", (DWORD)bResult);
  75     }
  76         bResult = EscapeCommFunction(hPort, CLRRTS);
  77     if (!bResult) {
  78         printf("WARNING: EscapeCommFunction(CLRRTS) failed: %lx\n", (DWORD)bResult);
  79     }
  80         }
  81     printf("Getting the default line characteristics...\n");
  82         dcb.DCBlength = sizeof(DCB);
  83         if (!GetCommState(hPort, &dcb)) {
  84         printf("ERROR: failed to get the dcb: %ld\n", GetLastError());
  85         return 2;
  86     }
  87     printf("Setting the line characteristics to 9600,8,N,1\n");
  88     dcb.BaudRate = dwBaud;
  89     dcb.ByteSize = 8;
  90     dcb.Parity = NOPARITY;
  91     dcb.StopBits = ONESTOPBIT;
  92
  93     bResult = SetCommState(hPort, &dcb);
  94     if (!bResult) {
  95         printf("ERROR: failed to set the comm state: %lx\n", (DWORD)bResult);
  96         return 3;
  97     }
  98         for (i = 0; i < BUFSIZE; i++) {
  99         txBuffer[i] = (CHAR)i;
 100         //printf(" %d ", txBuffer[i]);
 101         rxBuffer[i] = 0xFF;
 102     }
 103     printf("\n");
 104     printf("Writting transmit buffer to the serial port\n");
 105     bResult = WriteFile(hPort, txBuffer, BUFSIZE, &dwNumWritten, NULL);
 106     if (!bResult) {
 107         printf("ERROR: failed to write to the serial port: %lx\n", (DWORD)bResult);
 108         return 4;
 109     }
 110     printf("WriteFile() returned: %lx, byteswritten: %lx\n", (DWORD)bResult, dwNumWritten);
 111 #if 0
 112         printf("Attempting to read %d bytes from the serial port\n", BUFSIZE);
 113     bResult = ReadFile(hPort, rxBuffer, BUFSIZE, &dwNumRead, NULL);
 114         if (!bResult) {
 115         printf("ERROR: failed to read from the serial port: %lx\n", (DWORD)bResult);
 116         return 5;
 117     }
 118     printf("ReadFile() returned: %lx, bytesread: %lx\n", (DWORD)bResult, dwNumRead);
 119     for (i = 0; i < BUFSIZE; i++) {
 120         printf(" %d ",rxBuffer[i]);
 121     }
 122 #endif
 123     printf("Attempting to close the serial port\n");
 124     bResult = ClearCommError(hPort, &dwErrors, NULL);
 125     printf("ClearCommError returned: %lx, dwErrors: %lx\n", (DWORD)bResult, dwErrors);
 126     bResult = CloseHandle(hPort);
 127     if (!bResult) {
 128         printf("ERROR: failed to close the serial port: %lx\n", (DWORD)bResult);
 129         return 6;
 130     }
 131     printf("Finished\n");
 132     return 0;
 133 }