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diff --git a/decoders/microwire/__init__.py b/decoders/microwire/__init__.py
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+##
+## This file is part of the libsigrokdecode project.
+##
+## Copyright (C) 2017 Kevin Redon <kingkevin@cuvoodoo.info>
+##
+## 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, see <http://www.gnu.org/licenses/>.
+##
+
+'''
+Microwire is a 3-wire half-duplex synchronous serial communication protocol.
+Originally from National Semiconductor, it is often used in EEPROM chips with
+device specific commands on top of the bit stream.
+
+Channels:
+
+ - CS: chip select, active high
+ - SK: clock line, for the synchronous communication (idle low)
+ - SI: slave data input, output by the master and parsed by the selected slave
+       on rising edge of clock line (idle low)
+ - SO: slave data output, output by the selected slave and changed on rising
+       edge of clock line, or goes from low to high when ready during status
+       check (idle high impedance)
+
+The channel names might vary from chip to chip but the underlying function is
+the same.
+'''
+
+from .pd import Decoder