forked from osmocom/wireshark
177 lines
5 KiB
C
177 lines
5 KiB
C
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/* packet-sercosiii_1v1_mst.c
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* Routines for SERCOS III dissection
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <glib.h>
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#include <epan/packet.h>
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#include "packet-sercosiii.h"
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static gint hf_siii_mst_channel = -1;
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static gint hf_siii_mst_type = -1;
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static gint hf_siii_mst_cyclecntvalid = -1;
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static gint hf_siii_mst_telno = -1;
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static gint hf_siii_mst_phase = -1;
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static gint hf_siii_mst_cyclecnt = -1;
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static gint hf_siii_mst_crc32 = -1;
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static gint ett_siii_mst = -1;
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static gint ett_siii_mst_teltype = -1;
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static gint ett_siii_mst_phase = -1;
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static const value_string siii_mst_phase_text[]=
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{
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{0x00, "CP0"},
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{0x01, "CP1"},
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{0x02, "CP2"},
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{0x03, "CP3"},
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{0x04, "CP4"},
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{0x80, "CP0 (Phase Change)"},
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{0x81, "CP1 (Phase Change)"},
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{0x82, "CP2 (Phase Change)"},
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{0x83, "CP3 (Phase Change)"},
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{0x84, "CP4 (Phase Change)"},
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{0, NULL}
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};
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static const value_string siii_mst_teltype_text[]=
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{
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{0x00, "CP0"},
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{0x01, "CP1"},
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{0x02, "CP2"},
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{0x03, "CP3"},
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{0x04, "CP4"},
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{0x80, "CP0 (Phase Change)"},
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{0x81, "CP1 (Phase Change)"},
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{0x82, "CP2 (Phase Change)"},
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{0x83, "CP3 (Phase Change)"},
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{0x84, "CP4 (Phase Change)"},
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{0, NULL}
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};
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static const value_string siii_mst_channel_text[]=
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{
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{0x00, "P-Telegram"},
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{0x01, "S-Telegram"},
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{0, NULL}
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};
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static const value_string siii_mst_type_text[]=
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{
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{0x00, "MDT"},
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{0x01, "AT"},
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{0, NULL}
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};
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static const value_string siii_mst_cyclecntvalid_text[]=
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{
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{0x00, "Invalid"},
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{0x01, "Valid"},
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{0, NULL}
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};
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void dissect_siii_mst(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree)
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{
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proto_item* ti;
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proto_tree* subtree;
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proto_tree* subtree2;
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ti = proto_tree_add_text(tree, tvb, 0, 6, "MST");
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subtree = proto_item_add_subtree(ti, ett_siii_mst);
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ti = proto_tree_add_text(subtree, tvb, 0, 1, "Telegram Type");
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subtree2 = proto_item_add_subtree(ti, ett_siii_mst_teltype);
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proto_tree_add_item(subtree2, hf_siii_mst_channel, tvb, 0, 1, TRUE);
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proto_tree_add_item(subtree2, hf_siii_mst_type, tvb, 0, 1, TRUE);
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proto_tree_add_item(subtree2, hf_siii_mst_cyclecntvalid, tvb, 0, 1, TRUE);
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proto_tree_add_item(subtree2, hf_siii_mst_telno, tvb, 0, 1, TRUE);
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ti = proto_tree_add_text(subtree, tvb, 1, 1, "Phase Field");
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subtree2 = proto_item_add_subtree(ti, ett_siii_mst_phase);
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proto_tree_add_item(subtree2, hf_siii_mst_phase, tvb, 1, 1, TRUE);
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proto_tree_add_item(subtree2, hf_siii_mst_cyclecnt, tvb, 1, 1, TRUE);
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proto_tree_add_item(subtree, hf_siii_mst_crc32, tvb, 2, 4, TRUE);
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}
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void dissect_siii_mst_init(gint proto_siii)
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{
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/* Setup list of header fields See Section 1.6.1 for details*/
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static hf_register_info hf_siii_header[] = {
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{ &hf_siii_mst_channel,
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{ "Channel", "siii.channel",
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FT_UINT8, BASE_DEC, VALS(siii_mst_channel_text), 0x80,
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NULL, HFILL }
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},
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{ &hf_siii_mst_type,
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{ "Telegram Type" , "siii.type",
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FT_UINT8, BASE_DEC, VALS(siii_mst_type_text), 0x40,
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NULL, HFILL }
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},
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{ &hf_siii_mst_cyclecntvalid,
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{ "Cycle Count Valid", "siii.cyclecntvalid",
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FT_UINT8, BASE_DEC, VALS(siii_mst_cyclecntvalid_text), 0x20,
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NULL, HFILL }
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},
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{ &hf_siii_mst_telno,
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{ "Telegram Number", "siii.telno",
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FT_UINT8, BASE_DEC, NULL, 0x0F,
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NULL, HFILL }
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},
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{ &hf_siii_mst_phase,
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{ "Phase", "siii.mst.phase",
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FT_UINT8, BASE_HEX, VALS(siii_mst_phase_text), 0x8F, /* CHANGED: SB: new value is 0x8F for masking out phase */
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NULL, HFILL }
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},
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{ &hf_siii_mst_cyclecnt,
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{ "Cycle Cnt", "siii.mst.cyclecnt",
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FT_UINT8, BASE_DEC, NULL, 0x70, /* CHANGED: SB: new value is 0x70 for masking out cycle cnt */
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NULL, HFILL }
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},
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{ &hf_siii_mst_crc32,
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{ "CRC32", "siii.mst.crc32",
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FT_UINT32, BASE_HEX, NULL, 0,
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NULL, HFILL }
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}
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};
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/* Setup protocol subtree array */
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static gint *ett[] = {
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&ett_siii_mst,
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&ett_siii_mst_teltype,
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&ett_siii_mst_phase
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};
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/* Required function calls to register the header fields and subtrees used */
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proto_register_field_array(proto_siii, hf_siii_header, array_length(hf_siii_header));
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proto_register_subtree_array(ett, array_length(ett));
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}
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