Hi, I have a python flowgraph with several blocks.
One of them is a "filter.single_pole_iir_filter_ff" which does a moving average. The last block is a Sink to file block. I scan several bands, 10MHz each, in order to get the power of the signals in those bands. I use moving average to get an average of 5 readings in each band. In order to change the center frequency, I stop the flow-grahp, reconfigure the USRP center freq and then start the flow-graph again. I guess samples from the previous scans remain in internal block buffers since I get power in samples of BAND2 (BAND1+10MHz) which are only present in BAND1. That is, the moving average is effective between bands and I only want to be effective in the same band. I thought that stop() and start() signals would reset the entire graph but I am afraid it doesn't. Is there a way to flush those samples so that everytime I run the frequency changed flow-graph I don't get the samples from the previous band? Many thanks in advance. Jorge
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