clients: add simple MATLAB script to receive raw data via UDP

clients/matlab/receiver.m

@@ -0,0 +1,60 @@
+% Simple MATLAB code to receive VILLAS UDP samples
+%
+% @author Megha Gupta <meghagupta1191@gmail.com>
+% @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
+% @copyright 2018, Institute for Automation of Complex Power Systems, EONERC
+% @license GNU General Public License (version 3)
+%
+% VILLASnode
+%
+% 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 3 of the License, or
+% 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, see <http://www.gnu.org/licenses/>.
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+close all;
+clear all;
+clc;
+
+% Configuration and connection
+t = udp('127.0.0.1',                ...
+    'LocalPort', 12000,             ...
+    'RemotePort', 12001,            ...
+    'Timeout', 60,                  ...
+    'DatagramTerminateMode', 'on' ...
+);
+disp('UDP Receiver started');
+
+fopen(t);
+disp('UDP Socket bound');
+
+num_values = 5;
+num_samples = 500;
+
+data = zeros(num_values, num_samples);
+i = 1;
+
+disp('Receiving data');
+while i < num_samples
+    % Wait for connection
+    % Read data from the socket
+    
+    [ dat, count ] = fread(t, num_values, 'float32');
+    
+    data(:,i) = dat;
+    i = i + 1;
+end
+
+plot(data');
+
+fclose(t);
+delete(t);

clients/matlab/villas.conf

@@ -0,0 +1,32 @@
+nodes = {
+    signal = {
+        type = "signal",
+        signal = "mixed"
+        values = 5
+        rate = 100
+    },
+    matlab = {
+        type = "socket",
+        layer = "udp",
+        format = "raw.32.be"
+
+        in = {
+            address = "*:12001"
+        },
+        out = {
+            address = "134.61.142.128:12000"
+
+            signals = {
+                count = 5,
+                type = "float"
+            }
+        }
+    }
+}
+
+paths = (
+    {
+        in = "signal"
+        out = "matlab"
+    }
+)