TestControlSettings.c

 
#include <stdio.h>
 
#include <sys/stat.h>
 
#include <winpr/comm.h>
#include <winpr/crt.h>
 
#include "../comm.h"
 
int TestControlSettings(int argc, char* argv[])
{
  struct stat statbuf = { 0 };
  BOOL result = 0;
  HANDLE hComm = NULL;
  DCB dcb = { 0 };
 
  if (stat("/dev/ttyS0", &statbuf) < 0)
  {
    (void)fprintf(stderr, "/dev/ttyS0 not available, making the test to succeed though\n");
    return EXIT_SUCCESS;
  }
 
  result = DefineCommDevice("COM1", "/dev/ttyS0");
  if (!result)
  {
    (void)fprintf(stderr, "DefineCommDevice failure: 0x%x\n", GetLastError());
    return EXIT_FAILURE;
  }
 
  hComm = CreateFile("COM1", GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);
  if (hComm == INVALID_HANDLE_VALUE)
  {
    (void)fprintf(stderr, "CreateFileA failure: 0x%x\n", GetLastError());
    return EXIT_FAILURE;
  }
 
  ZeroMemory(&dcb, sizeof(DCB));
  dcb.DCBlength = sizeof(DCB);
  if (!GetCommState(hComm, &dcb))
  {
    (void)fprintf(stderr, "GetCommState failure; GetLastError(): %08x\n", GetLastError());
    return FALSE;
  }
 
  /* Test 1 */
 
  dcb.ByteSize = 5;
  dcb.StopBits = ONESTOPBIT;
  dcb.Parity = MARKPARITY;
 
  if (!SetCommState(hComm, &dcb))
  {
    (void)fprintf(stderr, "SetCommState failure; GetLastError(): %08x\n", GetLastError());
    return FALSE;
  }
 
  ZeroMemory(&dcb, sizeof(DCB));
  dcb.DCBlength = sizeof(DCB);
  if (!GetCommState(hComm, &dcb))
  {
    (void)fprintf(stderr, "GetCommState failure; GetLastError(): %08x\n", GetLastError());
    return FALSE;
  }
 
  if ((dcb.ByteSize != 5) || (dcb.StopBits != ONESTOPBIT) || (dcb.Parity != MARKPARITY))
  {
    (void)fprintf(stderr, "test1 failed.\n");
    return FALSE;
  }
 
  /* Test 2 */
 
  dcb.ByteSize = 8;
  dcb.StopBits = ONESTOPBIT;
  dcb.Parity = NOPARITY;
 
  if (!SetCommState(hComm, &dcb))
  {
    (void)fprintf(stderr, "SetCommState failure; GetLastError(): %08x\n", GetLastError());
    return FALSE;
  }
 
  ZeroMemory(&dcb, sizeof(DCB));
  dcb.DCBlength = sizeof(DCB);
  if (!GetCommState(hComm, &dcb))
  {
    (void)fprintf(stderr, "GetCommState failure; GetLastError(): %08x\n", GetLastError());
    return FALSE;
  }
 
  if ((dcb.ByteSize != 8) || (dcb.StopBits != ONESTOPBIT) || (dcb.Parity != NOPARITY))
  {
    (void)fprintf(stderr, "test2 failed.\n");
    return FALSE;
  }
 
  if (!CloseHandle(hComm))
  {
    (void)fprintf(stderr, "CloseHandle failure, GetLastError()=%08x\n", GetLastError());
    return EXIT_FAILURE;
  }
 
  return EXIT_SUCCESS;
}