Help Plz!!!!!!!!!How to communicate with a USB port as we does with a COM port using RS 232 library

[vava]

Hi All,

      In our project we use RS232 library to communiacte with COM Port.But my problem is:

     Now we are having Acer's laptops using WindowsXP with USB ports not COM ports.But we use an adapter and communicate with this USB port as with a COM Port.Each time when we return from standby mode the COM port that is assigned differs and hence program doesn't work since it always search for a specific port say COM2.Is there any mechanism to chk which COM port has been assigned to USB port.i.e., I must be able to know which COM Port has been assigned to USB port before data acquisition starts.Plz help.

Regards,

Mala

[RayFarmer]

Hi,

You need to go in the Device Manager and re-assign your com ports.

Regards

Ray Farmer

[scomack]

I use a product called "USB Serial Converter" (no real manufacturer listed) that had a USB to 9-pin cable and software drivers.  Using this, I can do Rs-232 com over the USB port and the "com port number" always stays the same.  I believe the product was about $20.  Tyhe USB port still functions as a USB port at any time it is needed for that.