Hotspot mode problem using hostapd in STM32MP157C-DK2.

[SPark.15]

Hello Guys.

I am using STM32MP157C-DK2 and st-image-core.

Looking at the st-image-weston and wiki Page, I am configuring the hotspot mode to be available in my image.

First, while looking at the wiki page and st-image-weston, I composed a script that uses the following command.

(/usr/sbin/hostapd /etc/hostapd.conf -P /run/hostapd.pid -B)

I created systemd because there is no response from the installed hostapd systemd.

Next, I made systemd execute my script.

However, the hotspot mode did not work.

If I run the script directly from the terminal or crontab, hotspot mode operates normally as shown below.

---------------------------------------------------------------

Configuration file: /etc/hostapd.conf

wlan0: Could not connect to kernel driver

Using interface wlan0 with hwaddr 10:98:c3:63:a7:e3 and ssid "HSGT_SsgRk4hU"

random: Only 19/20 bytes of strong random data available

random: Not enough entropy pool available for secure operations

WPA: Not enough entropy in random pool for secure operations - update keys later when the first station connects

wlan0: interface state UNINITIALIZED->ENABLED

wlan0: AP-ENABLED

wlan0   Link encap:Ethernet HWaddr 10:98:C3:63:A7:E3

     inet addr:192.168.72.1 Bcast:192.168.72.255 Mask:255.255.255.0

     inet6 addr: fe80::1298:c3ff:fe63:a7e3/64 Scope:Link

     UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

     RX packets:0 errors:0 dropped:0 overruns:0 frame:0

     TX packets:1142 errors:0 dropped:0 overruns:0 carrier:0

     collisions:0 txqueuelen:1000

     RX bytes:0 (0.0 B) TX bytes:197392 (192.7 KiB)

---------------------------------------------------------------

However, if I run it from systemd, it will not run with the following message.

----------------------------------------------------------------

Could not set channel for kernel driver

Interface initialization failed

wlan0: interface state UNINITIALIZED->DISABLED

wlan0: AP-DISABLED

wlan0: Unable to setup interface.

wlan0: interface state DISABLED->DISABLED

wlan0: AP-DISABLED

wlan0: CTRL-EVENT-TERMINATING

hostapd_free_hapd_data: Interface wlan0 wasn't started

nl80211: deinit ifname=wlan0 disabled_11b_rates=0

----------------------------------------------------------------

Or, it appears as if it succeeded as below, but it is not actually applied in ifconfig.

----------------------------------------------------------------

current no hotspot mode -> hotspot start

Configuration file: /etc/hostapd.conf

wlan0: Could not connect to kernel driver

Using interface wlan0 with hwaddr 10:98:c3:63:a7:e3 and ssid "HSGT_SsgRk4hU"

wlan0: interface state UNINITIALIZED->ENABLED

wlan0: AP-ENABLED

Hotspot mode start success

wlan0   Link encap:Ethernet HWaddr 10:98:C3:63:A7:E3

     inet6 addr: fe80::1298:c3ff:fe63:a7e3/64 Scope:Link

     UP BROADCAST MULTICAST MTU:1500 Metric:1

     RX packets:0 errors:0 dropped:0 overruns:0 frame:0

     TX packets:8 errors:0 dropped:0 overruns:0 carrier:0

     collisions:0 txqueuelen:1000

     RX bytes:0 (0.0 B) TX bytes:1289 (1.2 KiB)

----------------------------------------------------------------

How can I solve this problem? Can't I run it with the commands listed above?

If there is any other way, please let me know.

In addition, the script I configured is composed as follows.

It is designed to simply search for IP and execute the command if it does not exist.

-----------------------------------------------------------------

#!/bin/sh

status=`/sbin/ifconfig | grep 192.168.72.1 | wc -l`

if [ $status -gt 0 ]

then

    echo "current hotspot mode -> skip"

else

    echo "no hotspot mode -> hotspot start"

    /usr/sbin/hostapd /etc/hostapd.conf -P /run/hostapd.pid -B > /home/root/result.txt

    status_again=`/sbin/ifconfig | grep 192.168.72.1 | wc -l`

    if [ $status_again -gt 0 ]

    then

        echo "Hotspot mode start success"

    else

        echo "Hotspot mode start fail"

    fi

fi

-----------------------------------------------------------------

thanks

[Christophe Guibout]

Hi @SPark.15​ ,

I think you don't need to create a new service that manages hostapd, as hostapd service already does the job. You only need to update /etc/default/hostapd according with your needs, and restart the related services.

I would recommand to have a look into st-hotspot-wifi-service.sh script which already manage this (on target : /usr/local/demo/bin)

Please also cross-check that the network file is correct :

root@stm32mp1:~# networkctl status wlan0
   Link File: /lib/systemd/network/99-default.link              
Network File: /lib/systemd/network/hostapd.network   

BR,

Christophe

[SPark.15]

I understood what you say. I check that script you said(st-hotspot-wifi-service.sh).

​I understood that after updating hostapd.network as I want, And restart the hostapd service.

I try that you recommend.

Thank you for your help