interrupt serial port

[trainee1]

Threads merged.  Those of us that are here to help, check all the boards.  There's no reason to post in more than one place.

Anyway, how are you reading data?  Don't most interfaces just block until there's something to read?

With this line of code:

while true:
        s = serialport.readline()

which is run on the pi with the python script. A serial connection is between the pi and a desktop. As I type characters on the terminal (Putty) on the desktop, there should be an interrupt to say data is ready or a flag maybe. I dont want always listen to the serial port (Polling).