I'm creating a customized block in the GNU Radio framework using
python that takes in a number of input items and once that number of
input items surpasses a certain number, 1024 of the input items are
taken and stored into an array, and then those items are converted to dB
and lastly compared to a threshold value, 5 in this case. If any of the
values are greater than the threshold value, a message is printed
indicating a signal is present, and if none of the values are greater
than 5, this is indicated with a message stating "No signal is present".
When I run the flow graph which uses this block I get the following error.
handler caught exception: a float is required
Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/gnuradio/gr/gateway.py", line 55, in eval
try: self._callback()
File "/usr/local/lib/python2.7/dist-packages/gnuradio/gr/gateway.py", line 144, in __gr_block_handle
) for i in self.__out_indexes],
File "/home/tellrell/Ener_detec.py", line 42, in general_work
c = math.log10(in1) #converts 1024 values stored in in1 to dB and stores them in c
TypeError: a float is required
thread[thread-per-block[8]: <block ED_block (22)>]: caught unrecognized exception
The .py script for the customized block along with the corresponding .grc file are attached below.
Any help would be great.
Ener_detec.py