serial_port = CreateFile(**port_name**, GENERIC_READ | GENERIC_WRITE, 0, 0, OPEN_EXISTING, 0, 0);显示char*类型的实参与LPCWSTR类型的实参不兼容，需要怎么改呢
serial_port = CreateFile(_T("COM1"), GENERIC_READ | GENERIC_WRITE, 0, 0, OPEN_EXISTING, 0, 0);com2 com3类似改下