[Discuss-gnuradio] ctcss squelch block for GRC

[dave k]

my first contribution
gr_ctcss_squelch_cc.xml 

<?xml version="1.0"?>
<!--
###################################################
##CTCSS Squelch
###################################################
 -->
<block>
        <name>CTCSS Squelch</name>
        <key>gr_ctcss_squelch_ff</key>
            <category>Level Controls</category> 
        <import>from gnuradio import gr</import>
        <make>gr.ctcss_squelch_ff($rate, $freq)</make>
        <callback>set_rate($rate)</callback>
        <callback>set_freq($freq)</callback>
        <param>
                <name>Sample Rate</name>
                <key>rate</key>
                <type>int</type>
        </param>
        <param>
                <name>CTCSS Frequency</name>
                <key>freq</key>
                <type>real</type>
        </param>
        <sink>
                <name>in</name>
                <type>float</type>
        </sink>
        <source>
                <name>out</name>
                <type>float</type>
        </source>
</block>