diff -r 7690a5df7539 -r d9e14a0ddbd6 tool/CommandCrc.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tool/CommandCrc.cpp	Fri Mar 03 13:33:17 2017 +0100
@@ -0,0 +1,127 @@
+/*****************************************************************************
+ *
+ *  Copyright (C) 2006-2017  Florian Pose, Ingenieurgemeinschaft IgH
+ *
+ *  This file is part of the IgH EtherCAT Master.
+ *
+ *  The IgH EtherCAT Master is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License version 2, as
+ *  published by the Free Software Foundation.
+ *
+ *  The IgH EtherCAT Master 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 the IgH EtherCAT Master; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ *  ---
+ *
+ *  The license mentioned above concerns the source code only. Using the
+ *  EtherCAT technology and brand is only permitted in compliance with the
+ *  industrial property and similar rights of Beckhoff Automation GmbH.
+ *
+ ****************************************************************************/
+
+#include <iostream>
+#include <iomanip>
+using namespace std;
+
+#include "CommandCrc.h"
+#include "MasterDevice.h"
+
+/*****************************************************************************/
+
+CommandCrc::CommandCrc():
+    Command("crc", "CRC error register diagnosis.")
+{
+}
+
+/*****************************************************************************/
+
+string CommandCrc::helpString(const string &binaryBaseName) const
+{
+    stringstream str;
+
+    str << binaryBaseName << " " << getName()
+        << " [OPTIONS]" << endl
+        << endl
+        << getBriefDescription() << endl
+        << endl
+        << "CRC - CRC Error Counter                0x300, 0x302, 0x304, 0x306"
+        << endl
+        << "PHY - Physical Interface Error Counter 0x301, 0x303, 0x305, 0x307"
+        << endl
+        << "FWD - Forwarded RX Error Counter       0x308, 0x309, 0x30a, 0x30b"
+        << endl
+        << "LNK - Lost Link Counter                0x310, 0x311, 0x312, 0x313"
+        << endl
+        << endl;
+
+    return str.str();
+}
+
+/****************************************************************************/
+
+#define NUM_PORTS (4)
+
+void CommandCrc::execute(const StringVector &args)
+{
+
+    MasterDevice m(getSingleMasterIndex());
+    m.open(MasterDevice::Read);
+
+    ec_ioctl_master_t master;
+    m.getMaster(&master);
+
+
+    cout << "   |";
+    for (unsigned int port = 0; port < NUM_PORTS; port++) {
+        cout << "Port " << port << "         |";
+    }
+    cout << endl;
+
+    cout << "   |";
+    for (unsigned int port = 0; port < NUM_PORTS; port++) {
+        cout << "CRC PHY FWD LNK|";
+    }
+    cout << endl;
+
+    ec_ioctl_slave_reg_t io;
+    io.emergency = 0;
+    io.address = 0x0300;
+    io.size = 20;
+    io.data = new uint8_t[20];
+
+    for (unsigned int i = 0; i < master.slave_count; i++) {
+
+        io.slave_position = i;
+        try {
+            m.readReg(&io);
+        } catch (MasterDeviceException &e) {
+            delete [] io.data;
+            throw e;
+        }
+
+        cout << setw(3) << i << "|";
+        for (int port = 0; port < 4; port++) {
+            cout << setw(3) << (unsigned int) io.data[ 0 + port * 2]; // CRC
+            cout << setw(4) << (unsigned int) io.data[ 1 + port * 2]; // PHY
+            cout << setw(4) << (unsigned int) io.data[ 8 + port]; // FWD
+            cout << setw(4) << (unsigned int) io.data[16 + port]; // LNK
+            cout << "|";
+        }
+
+        ec_ioctl_slave_t slave;
+        m.getSlave(&slave, i);
+        std::string slaveName(slave.name);
+        slaveName = slaveName.substr(0, 11);
+        cout << slaveName << endl;
+    }
+
+    delete [] io.data;
+}
+
+/*****************************************************************************/