Peripherals

The LAA provides many peripherals to automate the attached DUT. The peripherals can be controlled from the command line using laam.

Ethernet ports

Ethernet ports

Public ethernet

The public ethernet port is used to connect the LAA to the lab network. This network should let the LAA connect to the fleet management cloud service.

Private ethernet

This ethernet port is used to connect the DUT to the LAA in a private network managed by the LAA. In this network the IPs are:

  • LAA: 198.18.0.1

  • DUT: 198.18.0.2

DUT services

The LAA provides multiple network services on this interface: dhcp, dns, ntp, tftp, nfs, …

OLED

The OLED screen displays information about the status of the LAA:

  • IPv4

  • version (or target version if an upgrade is in progress)

  • serial numbers

  • organization

OLED

If the LAA is unable to get an IPv4 or to connect to the fleet management service, the right information will be displayed. More information on the connectivity guide.

Thermal probes

The LAA includes 2 embedded thermal sensors and a thermal probe connector.

Thermal probe

The values can be fetched with:

laam laacli temp amb  # ambiant
laam laacli temp dut  # thermal probe
laam laacli temp sys  # CPU

USB ports

USB connectors

DUT USB

  • Port 1: USB type-C with Power Delivery (USB-PD)

  • Port 2, 3 and 4: type-A

Each port can be controlled from the command line with

laam laacli usb 1 on
laam laacli usb 1 off

USB port off by default

The 4 USB ports are turned off at LAA boot time. You need to explicitly turn them on whenever needed.

USB port delivered power

The USB port maximum power are listed in this table:

USB port

Type

Max Amp (A)

Max Vol (V)

Max Power (W)

1

CΒ (PD)

3A

5V

15W

2-4

A

1.5A

5V

7.5W

Higher power requirements

If 15W isn’t enough for the DUT that you have to control, you can use the 12V power rail and use a USB PD converter like US274-100USBPDPOCZ that would be able to deliver up to 90W.

LAA USB

There is 2 USB port on the front of the LAA:

  • USB OTG port

  • Serial over USB: LAA serial console

The USB OTG port can be used to provide a mass storage device using USB gadget mode (USB mass storage emulation):

laam laacli usbg-ms on filename.img
laam laacli usbg-ms off

USB OTG port delivered power

USB port

Type

Max Amp (A)

Max Vol (V)

Max Power (W)

OTG

CΒ (PD)

1.5A

5V

7.5W