Hi,
I am trying to understand how the message source works
and how I can use it from within my python code.
So I wrote a simple script with a message source and a null sink.
I wanted the following behavior:
every time I press a button on my keybord to send a constant message in
the queue and verify that the queue size has increased.
Here is the piece of code that I have so far...
What I don't know how to do is to enqueue a message every time
I press a button.
Can someone point to the right direction as to how this event driven
behavior is implemented.
Thanks
Achilleas
==========================================================
from gnuradio import gr
from gnuradio import audio
from gnuradio.eng_option import eng_option
from optparse import OptionParser
class my_graph(gr.flow_graph):
def __init__(self):
gr.flow_graph.__init__(self)
packet = 'abcdefghijklmnopqrstuwxy' #multiple of gr.sizeof_float
msg=gr.message_from_string(packet)
src0 = gr.message_source(gr.sizeof_float,10)
dst = gr.null_sink (gr.sizeof_float)
self.connect (src0, dst)
# Now I want every time I press a button to run the following
code,
# so that I add the same msg in the message queue
src0.msgq().insert_tail(msg)
print src0.msgq().count()
if __name__ == '__main__':
try:
my_graph().run()
except KeyboardInterrupt:
pass
==========================================================
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