crosscontrol CrossLink TG Bedienungsanleitung
Product revision: 2
2019-10-23
Getting started guide
Crosslink TG
www.crosscontrol.com
Crosslink TG Product revision: 2.1
Getting started guide 2019-10-31
www.crosscontrol.com 2
Contents
Revision history ...............................................................................................................................2
1.Login ...........................................................................................................................................3
2.Development using LinX Software Suite DevEnv 4..................................................................3
2.1.Qt...............................................................................................................................................3
2.2.Qt Creator ................................................................................................................................4
2.3.Set remote device IP address ...............................................................................................9
2.4.Scanning for a Device..........................................................................................................10
3.Create and Deploy a Console Application ..........................................................................11
4.Auto starting an application during boot..............................................................................14
5.Security.....................................................................................................................................14
5.1.Using the “uncomplicated firewall” ...................................................................................15
6.Further Reading .......................................................................................................................15
Revision history
Rev Date Author Comments
1 2019-07-23 Anders
Svedberg Version 1.0
2 2019-10-23 Anders
Svedberg Added Qt Creator configuration
2.1 2019-10-31 Finn Mc Guirk Minor corrections
Crosslink TG Product revision: 2.1
Getting started guide 2019-10-31
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1. Login
The CrossLink TG can be accessed from the serial port or Ethernet. The easiest way is to connect
the device to a router and it will be automatically assigned an IP address. The unit runs a SSH
server so anyone can connect to it using the correct username and password.
By default the root (super user) account is disabled for SSH login for security reasons, but a
standard user account can be used:
Username: ccs
Password: default
This normal user account does not have super user privileges, but by typing “su” and typing the
root password, user is switched to root. The default root password is root .
ccs@arm:~$ su
For a development machine, it might be necessary to allow root login via SSH for remote
debugging and accessing hardware on the device during development. This can be done from a
root login shell, and editing the file /etc/ssh/sshd_config.
In the “Authentication” section, enable root login as below.
# Authentication:
PermitRootLogin yes
Do not connect a device directly to the Internet without changing default passwords and with root
login enabled via SSH. When connecting via a GPRS modem it can be vulnerable and several
security steps needs to be taken.
2. Development using LinX Software Suite DevEnv 4
CrossControl provides a virtual machine for easier development with the CrossLink TG. The virtual
machine, a Linux distribution, is configured for easy cross compilation and deployment. It comes
pre-configured with development tools and the required software.
2.1. Qt
The LinX-base package contains Qt runtime libraries. Qt is an open-source cross platform C++
library with many modules that can speed up development. Support for database handling, network
communication, serial communication, CAN bus, GPS positioning, Bluetooth and much more.
In the LinX software Suite, CrossControl provides Qt builds for all Linux based computers that can
be built and deployed from the virtual machine.
Crosslink TG Product revision: 2.1
Getting started guide 2019-10-31
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CrossControl currently provides Qt open source runtime version 5.12 for the CrossLink TG and it is
pre-installed on the unit.
The current version of the virtual machine does not have the Crosslink TG toolchain installed but it
is available as a debian installer.
In the current version of LinX Software Suite DevEnv 4, the Crosslink TG SDK is not yet pre-
installed but is available as a separate installer. The installer can be downloaded from the Software
Download area at www.support.crosscontrol.com.
ccs@LinX-VM:~$ sudo dpkg -i crosslink-tg-sdk_1.0.0-1_all.deb
(Reading database ... 141169 files and directories currently installed.)
Preparing to unpack crosslink-tg-sdk_1.0.0-1_all.deb ...
Setting up crosslink-tg-sdk (1.0.0-1) ...
ccs@LinX-VM:~$
This will install the SDK with cross compiler and sysroot to folder /opt/TG.
There is also a separate Qt development package available to install on the virtual machine. It
containa three files:
install-Qt-5.12.0.sh
Qt-5.12.0_ARM_TG-x84_64.tar.gz
Qt-5.12.0_ARM_TG.tar.gz
To enable Qt development on the Virtual machine, download these three files to the virtual
machine and run install-Qt-5.12.0.sh .
ccs@LinX-VM:~$ chmod +x install-Qt-5.12.0.sh
ccs@LinX-VM:~$ ./ install-Qt-5.12.0.sh
2.2. Qt Creator
Qt comes with an advanced IDE called Qt Creator. It makes it easy to create a C++ application and
deploy it and run on the target device.
Crosslink TG Product revision: 2.1
Getting started guide 2019-10-31
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A typical 'Hello World' application written in Qt for CrossLink TG
The Qt Creator must be configured with the newly installed Qt libraries in order to be able to use it
correctly.
Step 1. Open “Tools Options” menu and select “Kits”
Select “Compilers” tab and press [Add] button.
Select “GCC C”
Crosslink TG Product revision: 2.1
Getting started guide 2019-10-31
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Set name “GCC Crosslink TG” and compiler path to:
/opt/TG/gcc-linaro-5.3-2016.02-x86_64_arm-linux-gnueabihf/bin/arm-linux-
gnueabihf-gcc
Press [Apply] and then repeat for C++ compiler:
[Add] GCC C++
Set name “GCC Crosslink TG” and compiler path to:
/opt/TG/gcc-linaro-5.3-2016.02-x86_64_arm-linux-gnueabihf/bin/arm-linux-
gnueabihf-g++
Crosslink TG Product revision: 2.1
Getting started guide 2019-10-31
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Step 2. Set the debugger.
Switch to the “debugger” tab and select the debugger:
/opt/TG/gcc-linaro-5.3-2016.02-x86_64_arm-linux-gnueabihf/bin/arm-linux-
gnueabihf-gdb
Step 3. Configure Qt
Switch to the Qt Versions tab and select the path to the qmake binary:
/opt/TG/sysroots/x86_64-linux/Qt-5.12.0/bin/qmake
Crosslink TG Product revision: 2.1
Getting started guide 2019-10-31
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Step 4. Create the complete “Kit”.
Switch to the “Kits” tab and press [Add] button to create the build kit for Crosslink TG. It should be
configured as below:
Crosslink TG Product revision: 2.1
Getting started guide 2019-10-31
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Press [Ok] and the setup is complete.
2.3. Set remote device IP address
To deploy and test an application on the CrossLink TG, some settings need to be set in Qt Creator.
First, open [Tools] [Options…] menu
Crosslink TG Product revision: 2.1
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2.4. Scanning for a Device
The Crosslink TG will broadcast its IP address. It can be read from the virtual machine with the
application /opt/bin/snb_reader.
The virtual machine may need to use a bridged adapter instead of the default NAT settings in the
Virtualbox network settings page in order to get the scanning to work successfully.
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