Moving trx burst interface to trx directory
and to new 'Transceiver' cathegory in gnuradio-companion
diff --git a/grc/trx/CMakeLists.txt b/grc/trx/CMakeLists.txt
new file mode 100644
index 0000000..ac4ae13
--- /dev/null
+++ b/grc/trx/CMakeLists.txt
@@ -0,0 +1,23 @@
+# Copyright 2011,2012 Free Software Foundation, Inc.
+#
+# This file is part of GNU Radio
+#
+# GNU Radio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# GNU Radio is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Radio; see the file COPYING. If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+
+install(FILES
+ gsm_trx_burst_if.xml
+ DESTINATION share/gnuradio/grc/blocks
+)
diff --git a/grc/trx/gsm_trx_burst_if.xml b/grc/trx/gsm_trx_burst_if.xml
new file mode 100644
index 0000000..99427b3
--- /dev/null
+++ b/grc/trx/gsm_trx_burst_if.xml
@@ -0,0 +1,58 @@
+<?xml version="1.0"?>
+<block>
+ <name>TRX Burst Interface</name>
+ <key>gsm_trx_burst_if</key>
+ <import>import grgsm</import>
+ <make>grgsm.trx_burst_if($remote_addr, $base_port)</make>
+
+ <param>
+ <name>base_port</name>
+ <key>base_port</key>
+ <value>5700</value>
+ <type>string</type>
+ </param>
+
+ <param>
+ <name>remote_addr</name>
+ <key>remote_addr</key>
+ <value>127.0.0.1</value>
+ <type>string</type>
+ </param>
+
+ <sink>
+ <name>bursts</name>
+ <type>message</type>
+ <optional>1</optional>
+ </sink>
+
+ <source>
+ <name>bursts</name>
+ <type>message</type>
+ <optional>1</optional>
+ </source>
+
+ <doc>
+ OsmoTRX like UDP burst interface for external applications.
+
+ There are two UDP connections, where each message carries
+ one radio burst with header. Give a base port B (5700 by default).
+ One connection at port P=B+100+2 is used for sending received bursts
+ to an external application. Another one at port P=B+2 is used to
+ obtain to be transmitted bursts.
+
+ Received burst format:
+ 1 byte timeslot index
+ 4 bytes GSM frame number, big endian
+ 1 byte RSSI in -dBm
+ 2 bytes correlator timing offset in 1/256 symbol steps,
+ 2's-comp, big endian
+ 148 bytes soft symbol estimates, 0 -> definite "0",
+ 255 -> definite "1"
+
+ To be transmitted burst format:
+ 1 byte timeslot index
+ 4 bytes GSM frame number, big endian
+ 1 byte transmit level wrt ARFCN max, -dB (attenuation)
+ 148 bytes output symbol values, 0 & 1
+ </doc>
+</block>