Sierra Wireless FX30 User Guide
Rev 4 March 2019 34 41110030
Linux Interface Mapping
Linux Startup
The supported method of making changes to the Linux startup is to create a
Legato application. Changes or additions to the Linux scripts in /etc/rcS.d are
not supported by Sierra Wireless.
Reconfiguring the Firewall
For information about reconfiguring the firewall, see the Application Note FX30:
Network Interfaces and Firewall Rules (document number 41111930), available
on the Source.
Managing the I/O Interface
To manage the I/O interfaces such as digital and analog I/Os, LEDs, push button,
and hardware settings driven by GPIO, you can use:
• AT commands (see Managing the I/O Interface with AT Commands on
page 65)
• Linux shell commands (see FX30 Linux Interface and GPIO Mapping on
page 73)
• Legato Application Framework
· To use existing Legato tools, see docs.legato.io/latest/tools.html
· If you are interested in building your own Legato apps, see
docs.legato.io/latest/getStarted.html
Legato Application Framework
Before building custom applications for the FX30, you need to become familiar
with Legato. The best place to start is legato.io. Click the Build Apps icon. This
section contains:
• Concepts
· Overview—a high-level summary of Legato’s approach to application
development
· Develop Apps—the essentials for creating an app from scratch
Table 2-7: FX30 Interface Mapping to the Linux Interface
FX30 Interface Linux System
GPIOs /sys/class/gpio/gpioxx
Ethernet (FX30 only) eth0
a
a. eth0 has a default IP address of 192.168.13.31
USB usb0
b
b. usb0 is a network interface and has a default IP address of 192.168.2.2
Serial (FX30S only) /dev/ttyHSL0
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