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HANDLE hComPort;hComPort= CreateFile(L"COM1", GENERIC_READ | GENERIC_WRITE, 0, 0, OPEN_EXISTING, 0, 0);if (hComPort == INVALID_HANDLE_VALUE){ message = L"RS232 Error!";}else{ message = L"RS232 OK!";}
hComPort= CreateFile(L"COM2", GENERIC_READ | GENERIC_WRITE, 0, 0, OPEN_EXISTING, 0, 0);