SerialPort detecting line idle

TabsTheCat

New member
Joined
Dec 16, 2010
Messages
3
Programming Experience
10+
Hi Everyone

I'm using the VB 2010 SerialPort and I cannot work how or if it supports idle line detect i.e. when the receive line stops receiving data and it sits at logic 1 for more than a byte time interval (it is not a break detect as that is when the line is held at logic 0 instead)

I need to detect the line idle event (if it exists) as the particular serial communications protocol I need to recieve uses this for synchronisation.

The system timers are of no use as the shortest 1ms tick is too slow for the baud rate I am using and it will miss short line idle intervals.

Does anyone know how to detect SerialPort line idle?

Thanks in advance.
 
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