Moved trx utilities from apps subdirectory - the grgsm_trx app need to be updated
diff --git a/python/trx/ctrl_if.py b/python/trx/ctrl_if.py
new file mode 100644
index 0000000..a9050ef
--- /dev/null
+++ b/python/trx/ctrl_if.py
@@ -0,0 +1,82 @@
+#!/usr/bin/env python2
+# -*- coding: utf-8 -*-
+
+# GR-GSM based transceiver
+# CTRL interface implementation
+#
+# (C) 2016-2017 by Vadim Yanitskiy <axilirator@gmail.com>
+#
+# All Rights Reserved
+#
+# This program 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 2 of the License, or
+# (at your option) any later version.
+#
+# This program 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 this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+from grgsm import UDPLink
+
+class CTRLInterface(UDPLink):
+ def handle_rx(self, data):
+ if self.verify_req(data):
+ request = self.prepare_req(data)
+ rc = self.parse_cmd(request)
+
+ if type(rc) is tuple:
+ self.send_response(request, rc[0], rc[1])
+ else:
+ self.send_response(request, rc)
+ else:
+ print("[!] Wrong data on CTRL interface")
+
+ def verify_req(self, data):
+ # Verify command signature
+ return data.startswith("CMD")
+
+ def prepare_req(self, data):
+ # Strip signature, paddings and \0
+ request = data[4:].strip().strip("\0")
+ # Split into a command and arguments
+ request = request.split(" ")
+ # Now we have something like ["TXTUNE", "941600"]
+ return request
+
+ def verify_cmd(self, request, cmd, argc):
+ # Check if requested command matches
+ if request[0] != cmd:
+ return False
+
+ # And has enough arguments
+ if len(request) - 1 != argc:
+ return False
+
+ # Check if all arguments are numeric
+ for v in request[1:]:
+ if not v.isdigit():
+ return False
+
+ return True
+
+ def send_response(self, request, response_code, params = None):
+ # Include status code, for example ["TXTUNE", "0", "941600"]
+ request.insert(1, str(response_code))
+
+ # Optionally append command specific parameters
+ if params is not None:
+ request += params
+
+ # Add the response signature, and join back to string
+ response = "RSP " + " ".join(request) + "\0"
+ # Now we have something like "RSP TXTUNE 0 941600"
+ self.send(response)
+
+ def parse_cmd(self, request):
+ raise NotImplementedError