Knowledge Base

3 Starting up the device

The device is self-maintained. As soon as the device is powered by the DC Power Connector it is booting up. The MCU controls the different hardware peripherals like CPU, LTE, GNSS or WLAN module.
In the default bootup state the MCU is fully operational and the Linux operating system on the IMX8 CPU module is booted up. The network switch provides its interfaces as network ports to the main CPU module. The GNSS module is powered up and running. All the other modules (LTE, WLAN and auxiliary CPU) are disabled.
The green status LED is blinking, all the other LED indicators are turned off.

3.1 Access to the device

The console interface of Linux operating system running on the IMX8 main CPU module can be accessed ether by one of the network ports or the exposed serial terminal interface.

3.1.1 Serial terminal interface

Even if the device in unpowered a serial interface is provided to the host computer if an USB-C cable is plugged into the USB port located on the service port. By connecting a serial terminal (e.g Putty) to this serial port access to the Linux CLI is established.

Serial port configuration:

  • Baud rate: 115200 Baud
  • Protocol: 8N1

3.1.2 Network access

All the four ethernet ports can accept an assigned IP address from an DHCP server. Once an IP is assigned an SSH connection can be established (e.g Putty) to get access to the Linux CLI interface.

3.1.3 Loggin in to the demo application

The preconfigured user of the demo application has per default admin rights.

The default user logging is:
Username: root
Password: no password

The test application can be started with the following steps:

  1. Wait until the test application has been booted and the terminal returns
    “verdin-imx8mp-xxxxxxxx login:”
  2. Enter the default user "root” and confirm with “Enter”
  3. The successful logging is confirmed by string “root@verdin-imx8mp-xxxxxxxx:~#”
    rar4000 logging confirmed
  4. The demo application is ready to work with

3.2 Activate the entire hardware

Not all peripheral modules are activated after start-up. The following peripheral modules are initially ready for operation:

  • Bord controller MCU
  • Main CPU module (Verdin IMX8)
  • Ethernet ports (Switch Chip)
  • GPS module

The following peripheral modules must be activated specifically:

  • LTE Modem
  • WLAN module
  • Auxiliary CPU module (IMX6 phyCore)

By executing this command line the whole device is active:

root@verdin-imx8mp-xxxxxxxx:~# cd production_test/;./modem.sh;./wifi.sh;./imx6.sh;

e.g.:
rar4000 command line