UltraLite DevKit operation tutorial

Start-up your Ursaleo UltraLite DevKit

To start-up your UltraLite DevKit, turn on the power by using the slide switch located next to power jack.

An UrsaLeo debug LED module is attached to the baseboard connector. The start-up process is indicated by the following LEDs turning on:

• LED 1: On (connection to Google IoT Core)
• LED 2: On (connection to Thunderboard Sense 2)
• LED 3: On (authentication with Google Cloud Platform) after a few seconds
• LED 4-6 are reserved for future use

Note: If LED 2 is not "On", press the reset button located in the center of the Thunderboard to establish a connection. The yellow LED near the center of the Thunderboard should flash less than 30 times. This indicates a successful BLE connection has been established.

 Gain Terminal access to your UrsaLeo UltraLite Gateway DevKit

• Connect UltraLite DevKit to a computer via the microUSB port that is nearest the power button.
• Download and install Silicon Labs VCP drivers on PC (Windows or macOS): Silicon Labs VCP drivers

For Windows PC:

• Download and install Putty serial comms software on PC
• Start Putty and configure serial settings:
  • Baud rate: 115200
  • Data bits: 8
  • Stop bits: 1
  • Parity: None
    
    
• Power on the DevKit and wait for the boot prompt to appear.

Image: Putty configuration

For macOS:

• Launch Terminal
• Connect to the USB serial port.

computer-name:~ root-user$ ls /dev/*tty*

• You should see /dev/tty.SLAB_USBtoUART in the list. Set the port to 115200 8n1. No flow control.

computer-name:~ root-user$ sudo screen /dev/tty.SLAB_USBtoUART 115200/8/1/n/Xoff

• Enter your admin password for the macOS user.
• Hit Enter until you see prompt for a login.
• The boot prompt will appear:
  

        BEC Linux 2.5 imx6ulevk ttyS0
        imx6ulevk login:

• Login as “root” with no password.

        BEC Linux 2.5 imx6ulevk ttymxc0
        imx6ulevk login: root

• The shell prompt appears ready to run commands

        root@imx6ulevk:~#

Shutting down your UrsaLeo DevKit

The DevKit should be shut down correctly before turning off the power supply. This will avoid corruption of the microSD card.

• To shutdown, press the tactile switch adjacent to the micro USB connector ( furthest from power jack ). This will initiate the shutdown process.
• If the LED/SC board is installed, all the LED indicators will turn off, indicating a successful shutdown. If not, allow 30 seconds for the shutdown to complete.
• Now turn off the slide switch.