Enable Persistent WiFi on NXP FRDM IMX93 Board

armwaheed — Wed, 17 Sep 2025 01:04:14 GMT

Here are instructions to configure the NXP board to connect to a specific WiFi network on boot.

Create a wpa_supplicant.conf:

touch /etc/wpa_supplicant.conf
nano /etc/wpa_supplicant.conf

Enter your WiFi credentials into the wpa_supplicant.conf file:

ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1

network={
    ssid="YOUR_SSID"
    psk="YOUR_PASSWORD"
    key_mgmt=WPA-PSK
}

Test the wpa_supplicant.conf file:

modprobe moal mod_para=nxp/wifi_mod_para.conf
ifconfig mlan0 up
wpa_supplicant -B -i mlan0 -c /etc/wpa_supplicant.conf
udhcpc -i mlan0

mlan0 is the WiFi interface on i.MX93
If this connects to WiFi, we’re ready for automation

Configure DNS server IP addresses, so that the NXP board can resolve Internet addresses:

touch /usr/share/udhcpc/default.script
nano /usr/share/udhcpc/default.script

and add in the following udhcpc script:

#!/bin/sh
# udhcpc script
case "$1" in
    deconfig)
        ip addr flush dev $interface
        ;;
    bound|renew)
        ip addr add $ip/$subnet dev $interface
        ip route add default via $router
        echo "nameserver 8.8.8.8" > /etc/resolv.conf
        echo "nameserver 1.1.1.1" >> /etc/resolv.conf
        ;;
esac

Make the default.script executable:

chmod +x /usr/share/udhcpc/default.script

Create a nxp-wifi-setup.sh script:

touch /usr/bin/nxp-wifi-setup.sh
nano /usr/bin/nxp-wifi-setup.sh

and add in the following lines:

#!/bin/sh
# Load WiFi driver
/usr/sbin/modprobe moal mod_para=nxp/wifi_mod_para.conf

# Bring interface up
/usr/bin/ifconfig mlan0 up

# Connect to WiFi
/usr/sbin/wpa_supplicant -B -i mlan0 -c /etc/wpa_supplicant.conf

# Obtain DHCP IP + DNS
/usr/sbin/udhcpc -i mlan0 -s /usr/share/udhcpc/default.script

Make the nxp-wifi-setup.sh executable:

chmod +x /usr/bin/nxp-wifi-setup.sh

Create a nxp-wifi-setup.service:

touch /etc/systemd/system/nxp-wifi-setup.service
nano /etc/systemd/system/nxp-wifi-setup.service

Enter the following systemd commands into the nxp-wifi-setup.service file:

[Unit]
Description=WiFi Setup for NXP FRDM i.MX93
After=network.target

[Service]
Type=oneshot
ExecStart=/usr/bin/nxp-wifi-setup.sh
RemainAfterExit=yes

[Install]
WantedBy=multi-user.target

Create a wpa_supplicant.service:

touch /etc/systemd/system/wpa_supplicant.service
nano /etc/systemd/system/wpa_supplicant.service

Enter the following systemd commands into the wpa_supplicant.service file:

[Unit]
Description=WPA Supplicant daemon
After=network.target

[Service]
Type=simple
ExecStart=/usr/sbin/wpa_supplicant -i mlan0 -c /etc/wpa_supplicant.conf
Restart=always

[Install]
WantedBy=multi-user.target

Enable and Start the nxp-wifi-setup.service:

systemctl daemon-reload
systemctl enable nxp-wifi-setup.service wpa_supplicant.service
systemctl start nxp-wifi-setup.service wpa_supplicant.service

Check status:

systemctl status nxp-wifi-setup.service
systemctl status wpa_supplicant.service

and confirm Internet connectivity:

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

Re: Enable Persistent WiFi on NXP FRDM IMX93 Board

Zhiming_Liu — Wed, 17 Sep 2025 05:14:46 GMT

Hi @armwaheed

Thanks for sharing !

Best Regards,
Zhiming

topic Re: Enable Persistent WiFi on NXP FRDM IMX93 Board in i.MX Processors

Enable Persistent WiFi on NXP FRDM IMX93 Board

Re: Enable Persistent WiFi on NXP FRDM IMX93 Board