Configure wireless in Yocto Linux automatically when the system starts

krsuresh — Wed, 04 Jan 2023 02:57:39 GMT

Hi Team,

My goal is to configure wireless in Yocto Linux automatically when the system starts, but I am having trouble.
In accordance with expectations, the configuration is working properly, and the client is also connecting, but immediately it gets disconnected.
Kindly let me know if I am missing anything.

BoardDetails: HummingBoard Pulse i.MX8M Plus SOM board
Code details: https://github.com/SolidRun/meta-solidrun-arm-imx8
Branch: hardknott-imx8mp

The steps I followed,

Step1:
Added custom recipe file and my script in systemd folder.
Systemd path: source/meta-imx/meta-bsp/recipes-core/systemd/wifiscript_1.00.bb
My Script File Path: source/meta-imx/meta-bsp/recipes-core/systemd/file/wifi_script.sh

wifiscript_1.00.bb Details:
********************************
LICENSE = "CLOSED"
inherit update-rc.d systemd

SYSTEMD_AUTO_ENABLE = "enable"
SYSTEMD_SERVICE_${PN} = "wifi-script.service"
INITSCRIPT_PACKAGES = "${PN}"

SRC_URI_append = " file://wifi-script.service \
file://wifi-script.sh \
"
FILES_${PN} += "${systemd_unitdir}/system/wifi-script.service"

do_install_append() {
install -d ${D}/${systemd_unitdir}/system
install -d ${D}${bindir}
install -m 0644 ${WORKDIR}/wifi-script.service ${D}/${systemd_unitdir}/system
install -m 0744 ${WORKDIR}/wifi-script.sh ${D}${bindir}

My wifi_script.sh
*********************
WlanCnt=0
connmanctl enable wifi
ifconfig wlan0 up
if [ $? -eq 0 ]; then
while [ 1 ]
do
ifconfig | grep wlan0
if [ $? -eq 0 ]; then
echo "Interface UP"
break;
else
echo "Wlan0 Interface DOWN"
fi
sleep 1
if [ $WlanCnt -eq 10 ]; then
ifconfig wlan0 up
WlanCnt=0
fi
WlanCnt=`expr $WlanCnt + 1`
done
ClientDetected=0;
while [ $ClientDetected -ne 1 ]
do
Count=0;
rm -rf /var/run/wpa_supplicant/wlan0
sleep 20
sudo wpa_supplicant -B -i wlan0 -c /etc/wpa_supplicant.conf
if [ $? -eq 0 ]; then
while [ $Count -le 10 ]
do
iw wlan0 link | grep "Connected"
if [ $? -eq 0 ]; then
ClientDetected=1
break;
else
echo "Client not detected"
fi
sleep 1
Count=`expr $Count + 1`
done
if [ $ClientDetected -eq 1 ]; then
echo "Client detected"
sudo udhcpc -i wlan0
fi
fi
done
else
echo "WLAN not available"
fi

Step2: Target details

`root@imx8mpsolidrun:~# [ 63.440976] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 64.063630] imx-dwmac 30bf0000.ethernet eth1: PHY [stmmac-0:00] driver [ADIN1300] (irq=POLL)
[ 64.072117] imx-dwmac 30bf0000.ethernet eth1: configuring for phy/rgmii-id link mode

root@imx8mpsolidrun:~#
root@imx8mpsolidrun:~# iw wlan0 link
Connected to ae:ca:9d:c8:20:75 (on wlan0)
SSID: suresh
freq: 5745
RX: 1138 bytes (4 packets)
TX: 5458 bytes (36 packets)
signal: -63 dBm
rx bitrate: 6.0 MBit/s
tx bitrate: 292.5 MBit/s

bss flags:
dtim period: 2
beacon int: 100
root@imx8mpsolidrun:~# ifconfig wlan0
wlan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.22.74 netmask 255.255.255.0 broadcast 192.168.22.255
inet6 fe80::7287:a7ff:fefd:723d prefixlen 64 scopeid 0x20<link>
ether 70:87:a7:fd:72:3d txqueuelen 1000 (Ethernet)
RX packets 2 bytes 676 (676.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 37 bytes 6336 (6.1 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

root@imx8mpsolidrun:~#
root@imx8mpsolidrun:~# ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=115 time=50.1 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=115 time=33.7 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=115 time=25.0 ms
^C
--- 8.8.8.8 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 24.977/36.270/50.106/10.415 ms
root@imx8mpsolidrun:~#
root@imx8mpsolidrun:~#
root@imx8mpsolidrun:~# iw wlan0 link
Not connected.
root@imx8mpsolidrun:~# ifconfig wlan0
wlan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.22.74 netmask 255.255.255.0 broadcast 192.168.22.255
inet6 fe80::7287:a7ff:fefd:723d prefixlen 64 scopeid 0x20<link>
ether 70:87:a7:fd:72:3d txqueuelen 1000 (Ethernet)
RX packets 13 bytes 2578 (2.5 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 61 bytes 8824 (8.6 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

root@imx8mpsolidrun:~# iw wlan0 scan | grep SSID
SSID: suresh

Re: Configure wireless in Yocto Linux automatically when the system starts

Dhruvit — Tue, 10 Jan 2023 13:02:28 GMT

Hi @krsuresh ,

I hope you are doing well.

Please add drvdbg=0x20037 in your wi-fi module configuration in the wifi_mod_para_*.conf file to enable wifi driver debug logs.

Please provide me with boot logs,dmseg logs and Wireshark captures for further debugging.

Thanks & Regards,

Dhruvit Vasavada

Re: Configure wireless in Yocto Linux automatically when the system starts

Dhruvit — Mon, 23 Jan 2023 12:08:44 GMT

Hi @krsuresh,

Is your issue resolved?

waiting for your response.

Thanks & Regards,

Dhruvit Vasavada

Re: Configure wireless in Yocto Linux automatically when the system starts

krsuresh — Thu, 09 Feb 2023 10:56:24 GMT

Sorry for the delay. This issue not yet solved. Am in building core-minimal-image and adding packages one by one. Now am stuck with .NET build.

Re: Configure wireless in Yocto Linux automatically when the system starts

Dhruvit — Mon, 20 Feb 2023 11:45:36 GMT

Hi @krsuresh,

I hope you are doing well.

Please provide me with boot logs,dmseg logs, and Wireshark captures as mentioned in the previous reply for further debugging.

Thanks & Regards,

Dhruvit Vasavada.

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