Serial-comm question

[byte-one]

Can i check, if the handle from a comm-port are at the actual time ok? I the case, the user shut off the environment with the serial connection the app hangs.

[Jeff Barnes]

Not sure if this will help but in my app I do the following to see if data is still hitting the serial port:
Keep in mind that with my app the serial device sends data every second so I always expect to see something on the port unless the device is turned off or disconnected.

Code: Select all  Expand view

      if ReadComm( nComm , @cDataRead) <> 0
          //data on serial port
      else
         //no data on serial port
      endif
 

[byte-one]

No, i have the problem with a usb-serial converter. If the converter is unplugged from the user, the app hangs.