[Discuss-gnuradio] Variable in Delay block

[Yeo Jin Kuang Alvin (IA)]

Hi all,

 

Is it possible for me to create a QT GUI Range and put the ID in the Delay of the delay block? I tried and the graph doesn’t change.

 

I also tried generating the python file and created a QT GUI Entry, use the ID in the QT GUI Entry (delay_amt) and edited the code

 

def set_delay_amt(self, delay_amt):

                c = 0

                for a in range(0,5000):

                                for b in range(0,6000):

                                                if b == 5999:

                                                                c = c + 1

                                                                t = c*0.001

                                                                delay_amt = int(0.04*((3500*(t-2.5))**2 + 227322562.9)**(1/2.0)

                self.delay_amt = delay_amt

                Qt.QMetaObject.invokeMethod(self._delay_amt_line_edit, “setText”, Qt.Q_ARG(“QString”, str(self.delay_amt)))

                Self.blocks_delay_0.set_dly(self.delay_amt)

 

I have tested the values in python shell and I’ve gotten what I wanted. Just that when I run it, there doesn’t seems to be a delay changing with time. I want to control the delay overtime, to simulate the time take for it to transmit and reflect back an object when the object is moving for 5 secs. Does this method works or is there a better way of doing this and how?

 

Thank you in advanced!