Something about "gr.probe_avg_mag_sqrd_cf"

gr.probe_avg_mag_sqrd_cf : This function can be used to find the average power on a channel.

Details can be found at /usr/local/include/gnuradio/gr_probe_avg_mag_sqrd_cf.h

http://gnuradio.org/doc/doxygen/gr__probe__avg__mag__sqrd__cf_8h.html

http://gnuradio.org/doc/doxyge/gr__probe__avg__mag__sqrd__cf_8h_source.html

http://gnuradio.org/doc/doxygen/classgr__probe__avg__mag__sqrd__cf.html

The implementation file can be located in :

gnuradio/gnuradio-core/src/lib/general/gr_probe_avg_mag_sqrd_c.cc

Example :

#!/usr/bin/python2.6
#!/usr/bin/env python

from gnuradio import gr
from gnuradio import uhd
import sys, time

class rx_cfile_block1(gr.top_block):
    def __init__(self):
        gr.top_block.__init__(self)

                self.uhd_usrp_source = \
                uhd.usrp_source(device_addr="serial=1R270DU1",stream_args=uhd.stream_args('fc32'))

                self.gr_file_sink = gr.file_sink(gr.sizeof_float ,"/home/sumit/first_app_data1")

                self.uhd_usrp_source.set_subdev_spec("A:0", 0)

                self.uhd_usrp_source.set_antenna("RX2", 0)

                self.uhd_usrp_source.set_samp_rate(1000000)

                self.uhd_usrp_source.set_gain(45)

                treq = uhd.tune_request(2450000000)

                self.uhd_usrp_source.set_center_freq(treq)

                self._head = gr.head(gr.sizeof_float, int(4))
        
                self.c2mag = gr.probe_avg_mag_sqrd_cf(0.01, 0.001)

                self.connect(self.uhd_usrp_source, self.c2mag, self._head, self.gr_file_sink)

def main():
    tb = rx_cfile_block1()   

    while not tb.c2mag.unmuted():

        tb.run()

        print tb.c2mag.unmuted() #show exceed threshold or not
        print tb.c2mag.level()        #show power
        print tb.c2mag.threshold()
        time.sleep(3)
                     


if __name__ == '__main__':
    try:
        main()
    except KeyboardInterrupt:
        pass