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.
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Board index FiveWin for Harbour/xHarbour Serial-comm question
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.
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.
if ReadComm( nComm , @cDataRead) <> 0
//data on serial port
else
//no data on serial port
endifThanks,
Jeff Barnes
(FWH 16.11, xHarbour 1.2.3, Bcc730)
Jeff Barnes
(FWH 16.11, xHarbour 1.2.3, Bcc730)
No, i have the problem with a usb-serial converter. If the converter is unplugged from the user, the app hangs.