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   1 <?xml version="1.0"?>
   2 <!--
   3 ###################################################
   4 ##Probe Function
   5 ###################################################
   6  -->
   7 <block>
   8         <name>Probe Function</name>
   9         <key>probe_function</key>
  10         <import>from grc_gnuradio import blks2 as grc_blks2</import>
  11         <make>grc_blks2.probe_function(
  12         probe_callback=self.$(block_id()).$(function_name()),
  13         probe_rate=$probe_rate,
  14 )</make>
  15         <callback>set_probe_rate($probe_rate)</callback>
  16         <param>
  17                 <name>Block ID</name>
  18                 <key>block_id</key>
  19                 <value>my_block_0</value>
  20                 <type>string</type>
  21         </param>
  22         <param>
  23                 <name>Function Name</name>
  24                 <key>function_name</key>
  25                 <value>get_number</value>
  26                 <type>string</type>
  27         </param>
  28         <param>
  29                 <name>Probe Rate</name>
  30                 <key>probe_rate</key>
  31                 <value>10</value>
  32                 <type>real</type>
  33         </param>
  34         <source>
  35                 <name>out</name>
  36                 <type>float</type>
  37         </source>
  38         <doc>
  39 Polls a function of an arbitrary block and writes the value to the output port. \
  40 The block id is the id of another block in the flow graph. \
  41 The function name is the name of a function in the said block. \
  42 The function should take no arguments and return a floating point or integer number.
  43         </doc>
  44 </block>