decoder: Add cJTAG-Oscan1 decoder

libsigrokdecode4DSL/decoders/cjtag-oscan0/__init__.py

+##
+## This file is part of the libsigrokdecode project.
+##
+## Copyright (C) 2012-2015 Uwe Hermann <uwe@hermann-uwe.de>
+## Copyright (C) 2019 Zhiyuan Wan <dv.xw@qq.com>
+## Copyright (C) 2019 Kongou Hikari <hikari@iloli.bid>
+##
+## 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 St, Fifth Floor, Boston, MA  02110-1301 USA
+##
+
+'''
+JTAG (Joint Test Action Group), a.k.a. "IEEE 1149.1: Standard Test Access Port
+and Boundary-Scan Architecture", is a protocol used for testing, debugging,
+and flashing various digital ICs.
+
+Details:
+https://en.wikipedia.org/wiki/Joint_Test_Action_Group
+http://focus.ti.com/lit/an/ssya002c/ssya002c.pdf
+
+This decoders handles a tiny part of IEEE 1149.7, the so called CJTAG OSCAN1
+format
+http://developers-club.com/posts/237885/
+'''
+
+from .pd import Decoder
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