Added block for doing hopping for mobile station transceiver
diff --git a/grc/trx/gsm_freq_hopping.xml b/grc/trx/gsm_freq_hopping.xml
new file mode 100644
index 0000000..9e71e53
--- /dev/null
+++ b/grc/trx/gsm_freq_hopping.xml
@@ -0,0 +1,33 @@
+<?xml version="1.0"?>
+<block>
+ <name>freq_hopping</name>
+ <key>gsm_freq_hopping</key>
+ <import>import grgsm</import>
+ <make>grgsm.freq_hopping($hopping_cmd)</make>
+<!-- <callback>set_fn_time_reference($init_fn, $init_time_secs, $init_time_fracs)</callback>-->
+ <param>
+ <name>Initial hopping command</name>
+ <key>hopping_cmd</key>
+ <value>pmt.to_pmt({'cmd': 'start', 'hopping_params': {'hsn': 1, 'maio': 0, 'ma': [1,2,3,4]} })</value>
+ <type>raw</type>
+ <hide>part</hide>
+ </param>
+
+ <sink>
+ <name>hopping_cmd</name>
+ <type>message</type>
+ <optional>1</optional>
+ </sink>
+
+ <sink>
+ <name>bursts_in</name>
+ <type>message</type>
+ <optional>1</optional>
+ </sink>
+
+ <source>
+ <name>bursts_out</name>
+ <type>message</type>
+ <optional>1</optional>
+ </source>
+</block>