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diff --git a/macros/Hardware/RasberryPi/Soft/RPI_softToneWrite.sci b/macros/Hardware/RasberryPi/Soft/RPI_softToneWrite.sci
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+// Copyright (C) 2017 - IIT Bombay - FOSSEE
+//
+// This file must be used under the terms of the CeCILL.
+// This source file is licensed as described in the file COPYING, which
+// you should have received as part of this distribution.  The terms
+// are also available at
+// http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
+// Organization: FOSSEE, IIT Bombay
+// Email: toolbox@scilab.in
+
+function RPI_softToneWrite(pin,freq)
+// Function to update tone frquency on the soft tone pin
+//
+// Calling Sequence
+//  RPI_softToneWrite(pin,freq)
+//
+// Parameters
+//  pin : soft tone pin
+//  freq: frequency value to write
+//
+// Description
+//  This function updates the tone frequency value on the given pin. The tone will be played until you set the frequency to 0.
+//
+// Examples
+//  RPI_softToneWrite(1,200)
+// See also
+//  RPI_softPwmStop, RPI_softPwmWrite, RPI_softToneCreate, RPI_softToneStop, RPI_softPwmCreate, RPI_softServoWrite, RIP_softServoSetup
+//
+// Authors
+//  Jorawar Singh
+//
+// Bibliography
+//  http://wiringpi.com/reference/
+
+    commande="sTW#2#"+string(pin)+"#"+string(freq)+"#";
+    if getos=="Linux" then
+        unix_w("python -c ""import socket;s=socket.socket();s.connect((''"+RPI_piAdress+"'',9077));s.send(''"+commande+"'');print(s.recv(1024));s.close()""");
+    elseif getos=="Windows" then
+        RPI_winR=dos("python -c ""import socket;s=socket.socket();s.connect((''"+RPI_piAdress+"'',9077));s.send(''"+commande+"'');print(s.recv(1024));s.close()""");
+    end
+endfunction