Use Linux on the NXP FRDM i.MX 93 board
Introduction
Set up the board
Set up a Linux user and connect to WiFi
Transfer files to the board
(Optional) Enable Persistent WiFi
Next Steps

  Log an issue

  Fork and edit

  Discuss on Discord

You’re logged in as root, which is convenient for bring-up but not a great default for day-to-day development. In this section you’ll create a non-root user with admin privileges, then connect the board to WiFi so you can install packages and move files over the network.

Create a non-root user with sudo access

Start by allowing members of the wheel group to use sudo.

    

        
        
sudo visudo

In the editor that opens, find the line below and uncomment it:

    

        
        __output__%wheel ALL=(ALL:ALL) ALL # uncomment this line

Now create a user and add it to wheel:

    

        
        
sudo adduser testuser
sudo usermod -aG wheel testuser

Switch to the new user and confirm sudo works:

    

        
        
su - testuser
sudo whoami

The expected output is root.

Log out, then log back in as your new user.

Connect the board to WiFi

The WiFi driver isn’t brought up automatically on this Linux image. You load the module, then use connmanctl to connect.

Note

In this Linux image, ConnMan typically remembers the WiFi network you connected to.

After a reboot, you might still need to load the WiFi driver module again. Once the module is loaded, ConnMan usually reconnects automatically.

Load the WiFi driver and open connmanctl:

    

        
        
sudo /usr/sbin/modprobe moal mod_para=nxp/wifi_mod_para.conf
sudo connmanctl

At the connmanctl> prompt, enable and scan WiFi, then list services:

    

        
        
enable wifi
scan wifi
services

You’ll see services in a form similar to:

    

        
        __output__<SSID>                wifi_0123456789ab_cdef0123456789_managed_psk
__output__<SSID>                wifi_abcdef012345_6789abcdef0123_managed_psk
__output__<SSID>                wifi_fedcba987654_3210fedcba9876_managed_psk
Note

Duplicate SSIDs can appear, so you might need to try more than one wifi_..._managed_psk entry.

Connect to the right wifi_..._managed_psk entry and enter your passphrase when prompted.

In connmanctl, the passphrase is your WiFi network password (the WPA2/WPA-PSK key). Don’t add quotes around it.

    

        
        
agent on
connect wifi_0123456789ab_cdef0123456789_managed_psk

After you connect, exit connmanctl:

    

        
        
quit

Verify that your WiFi network has internet access:

    

        
        
curl -I http://www.example.com

The output is similar to:

    

        
        __output__HTTP/1.1 200 OK
__output__...

If you don’t have internet access on that network, you can still confirm the board has an IP address:

    

        
        
ifconfig | grep RUNNING -A 1
Back
Next