added my Recipes

meta-st/meta-st-openstlinux/recipes-samples/hotspot-wifi/demo-hotspot-wifi.bb

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+# Copyright (C) 2018, STMicroelectronics - All Rights Reserved
+SUMMARY = "Shell script to enable/disable hotsopt wifi configuration"
+HOMEPAGE = "www.st.com"
+LICENSE = "MIT"
+LIC_FILES_CHKSUM = "file://${COREBASE}/meta/COPYING.MIT;md5=3da9cfbcb788c80a0384361b4de20420"
+
+SRC_URI = "file://st-hotspot-wifi-service.sh"
+
+do_install() {
+    install -d ${D}${prefix}/local/demo/bin
+
+    install -m 755 ${WORKDIR}/st-hotspot-wifi-service.sh ${D}${prefix}/local/demo/bin
+}
+
+FILES:${PN} += "${prefix}/local/demo/bin"

meta-st/meta-st-openstlinux/recipes-samples/hotspot-wifi/files/st-hotspot-wifi-service.sh

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+#!/bin/sh -
+# Copyright (C) 2018, STMicroelectronics - All Rights Reserved
+
+#
+# For changing the password and SSID, please populate the file /etc/default/hostapd
+# cat /etc/default/hostapd
+# HOSTAPD_SSID=STExampleNetwork
+# HOSTAPD_PASSWD=stm32mp1
+
+
+if [ -f /etc/default/hostapd ];
+then
+    source /etc/default/hostapd
+else
+    HOSTAPD_SSID=STDemoNetwork
+    HOSTAPD_PASSWD=stm32mp1
+fi
+
+WLAN_INTERFACE=$(/sbin/ip link show wlan0 | head -n 1 | awk '{print $2}' | tr '\n' ' ' | sed "s/://" | sed "s/ //g")
+
+network_hotspot_install() {
+# systemd netword hotsopt configuration
+cat > /lib/systemd/network/hostapd.network << EOF
+[Match]
+Name=$WLAN_INTERFACE
+
+[Network]
+Address=192.168.72.1/24
+DHCPServer=yes
+IPForward=ipv4
+IPMasquerade=yes
+
+[DHCP]
+CriticalConnection=true
+UseTimezone=false
+
+[DHCPServer]
+EmitTimezone=no
+EOF
+
+# hotapd configuration
+cat > /etc/hostapd.conf << EOF
+interface=$WLAN_INTERFACE
+driver=nl80211
+# mode Wi-Fi (a = IEEE 802.11a, b = IEEE 802.11b, g = IEEE 802.11g)
+hw_mode=g
+ssid=$HOSTAPD_SSID
+channel=7
+wmm_enabled=0
+macaddr_acl=0
+# Wi-Fi closed, need an authentication
+auth_algs=1
+ignore_broadcast_ssid=0
+wpa=2
+wpa_passphrase=$HOSTAPD_PASSWD
+wpa_key_mgmt=WPA-PSK
+wpa_pairwise=TKIP
+rsn_pairwise=CCMP
+EOF
+
+}
+network_hotspot_erase() {
+    rm -f /lib/systemd/network/hostapd.network
+    rm -f /etc/hostapd.conf
+}
+
+# -------------------------------------------
+# -------------------------------------------
+if test `ifconfig $WLAN_INTERFACE > /dev/null 2>&1` ;
+then
+    echo "No WLAN0 interface available !!!!"
+    exit 1
+fi
+
+case $1 in
+start)
+    #verify if file are present
+    if test ! -f /lib/systemd/network/hostapd.network ;
+    then
+        network_hotspot_install
+    fi
+    # if not install file
+    /sbin/ip link set wlan0 up
+    # start service
+    systemctl daemon-reload
+    systemctl restart systemd-networkd.service
+    systemctl restart hostapd
+    ;;
+stop)
+    # stop service
+    systemctl stop hostapd
+    /sbin/ip link set wlan0 down
+    # remove file
+    network_hotspot_erase
+    systemctl restart systemd-networkd.service
+    systemctl daemon-reload
+    ;;
+*)
+    echo "Help: $0 [start|stop]"
+    ;;
+esac