Hello, everyone.
I designed both transmiter and receiver in GNU Radio. I am reading data from
serial port and according to data I am printing the max value at the receiver.
Now, I want to make frequency switch. For frequency switch, I wrote the code
below. I have a one problem that is when I run the program, receiver and
transmitter turn on and off until it finish. Every frequency switch, they turn
on and off. But If I designed range block in GNU Radio and If I change the
frequency manually, receiver and transmitter always run. I want to this. But my
design in code make blinking in SDR and it makes overflows error.
I will be glad if you help.
def center_freq_change(self):
global center_freq
global stop_freq
path = "C:\\Users\\my\\Desktop\\ss.txt"
while center_freq <= stop_freq:
self.lock()
self.blocks_file_sink_0.close()
self.unlock()
center_freq += diff
self.lock()
#self.uhd_usrp_source_0.set_center_freq(center_freq, 0)
#self.uhd_usrp_sink_0.set_center_freq(center_freq, 0)
tb.set_center_freq(center_freq)
self.blocks_file_sink_0.open(path)
self.unlock()
time.sleep(0.02)
f = np.fromfile(path, dtype=np.float32)
f_max = np.max(f)
print("Max. Value at {} Hz : {}".format(center_freq, f_max))
if center_freq == stop_freq:
break
center_freq = start_freq
self.lock()
#self.uhd_usrp_source_0.set_center_freq(center_freq, 0)
#self.uhd_usrp_sink_0.set_center_freq(center_freq, 0)
tb.set_center_freq(center_freq)
self.unlock()
