# WiFi Connection establishment using WiFi Dongle **URL:** \ **Category:** Legato Linux distribution (Yocto project)\ **Created:** [June 6, 2017, 10:05am UTC](https://forum.legato.io/t/wifi-connection-establishment-using-wifi-dongle/2486 "2017-06-06T10:05:58Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![rups](https://avatars.discourse-cdn.com/v4/letter/r/5e9695/32.png) [@rups](https://forum.legato.io/u/rups)\ **Post date:** [June 6, 2017, 10:05am UTC](https://forum.legato.io/t/wifi-connection-establishment-using-wifi-dongle/2486/1 "2017-06-06T10:05:58Z")
Hello Everyone, I have connected USB RTL8188 Wi Fi Dongle and added code to establish Wi Fi connection by using Wi Fi service : le\_wifiClient api le\_wifiClient\_GetFirstAccessPoint() le\_wifiClient\_GetNextAccessPoint() le\_wifiClient\_Create() le\_wifiClient\_Connect() etc It is giving me error as below: > ``` > Jun 6 09:14:24 | wifiService[532]/daemon T=main | pa_wifi_client_ti.c pa_wifiClient_Connect() 759 | SSID length 7 SSID: "Connect" > Jun 6 09:14:24 | wifiService[532]/daemon T=main | pa_wifi_client_ti.c pa_wifiClient_Connect() 772 | SwitchCase: LE_WIFICLIENT_SECURITY_NONE > Jun 6 09:14:24 | wifiService[532]/daemon T=main | pa_wifi_client_ti.c pa_wifiClient_Connect() 774 | Step 2: SH script > **Jun 6 09:14:24 | INFO | wifiService[532] | WIFICLIENT_CONNECT_SECURITY_NONE mode** > Jun 6 09:14:24 | INFO | wifiService[532] | wpa_supplicant v2.1-devel random: Trying to read entropy from /dev/random Successfully initialized wpa_supplicant Initializing interface 'wlan0' conf '/etc/wpa_supplicant.conf' driver 'nl80211' ctrl_i > Jun 6 09:14:24 | INFO | wifiService[532] | _supplicant.conf' -> '/etc/wpa_supplicant.conf' Reading configuration file '/etc/wpa_supplicant.conf' update_config=1 ctrl_interface='/var/run/wpa_supplicant' eapol_version=1 ap_scan=1 fast_reauth=1 d > Jun 6 09:14:24 | INFO | wifiService[532] | model_number='wl18xx' serial_number='12345' driver_param='use_multi_chan_concurrent=1 use_p2p_group_interface=1' p2p_go_max_inactivity=60 p2p_go_ht40=1 disassoc_low_ack=1 concurrent_sched_scan=1 p2p_ > **Jun 6 09:14:24 | INFO | wifiService[532] | button keypad' Could not read interface wlan0 flags: No such device nl80211: Driver does not support authentication/association or connect commands nl80211: Remove monitor interface: refcount=0 netlin** > **Jun 6 09:14:24 | INFO | wifiService[532] | erface wlan0 flags: No such device nl80211: Set mode ifindex 0 iftype 2 (STATION) nl80211: Failed to set interface 0 to mode 2: -19 (No such device) wlan0: Failed to initialize driver interface Failed** > **Jun 6 09:14:24 | INFO | wifiService[532] | lan0: P2P: Station mode scan operation not pending anymore (sta_scan_pending=0 p2p_cb_on_scan_complete=0) wlan0: Cancelling authentication timeout wlan0: cancel_sched_scan called when no sched scan** > **Jun 6 09:14:24 | wifiService[532]/daemon T=main | pa_wifi_client_ti.c pa_wifiClient_Connect() 790 | WiFi Client Command /legato/systems/current/apps/wifiService/read-only/pa_wifi.sh wlan0 WIFICLIENT_CONNECT_SECURITY_NONE "Connect" Faile** > Jun 6 09:14:24 | wifiService[532]/framework T=main | le_wifiClient_server.c Handle_le_wifiClient_Connect() 1186 | Sending response to client session 0x27d3c : 4 bytes sent > Jun 6 09:14:24 | wifisetupdemo[5247]/WiFiSetupDemoComponent T=main | WiFiSetupDemoComponent.c wifiConn() 74 | not Connecting to AP... > > ``` Kindly give me solution for above errors ---
**Author:** ![rups](https://avatars.discourse-cdn.com/v4/letter/r/5e9695/32.png) [@rups](https://forum.legato.io/u/rups)\ **Post date:** [June 13, 2017, 7:27am UTC](https://forum.legato.io/t/wifi-connection-establishment-using-wifi-dongle/2486/2 "2017-06-13T07:27:57Z")
Hi , I am trying to connect to wifi using commands as follow: $wifi client start $wifi client scan but it gave me error \> root@swi-mdm9x15:~# wifi client start \> successfully called start. \> root@swi-mdm9x15:~# wifi client scan \> starting scan. \> DEBUG: le\_wifiClient\_GetFirstAccessPoint ERROR The list of WiFi available is not getting displayed . How to recover this error, can any one please tell ---
**Author:** ![bharath\_08](https://avatars.discourse-cdn.com/v4/letter/b/db5fbb/32.png) [@bharath\_08](https://forum.legato.io/u/bharath_08)\ **Post date:** [December 14, 2017, 1:41pm UTC](https://forum.legato.io/t/wifi-connection-establishment-using-wifi-dongle/2486/3 "2017-12-14T13:41:08Z")
Hi rups, Kindly can you please stop any of the other Wi-Fi apps are running (wifiApTest, wifiClientTest, wifiWebAp), and then can you please check it. ``` You can also refer the document http://mangoh.io/wp-content/uploads/2017/05/4119378_mangOH-Green-Tutorial-Wi-Fi_r1.pdf ``` Best Regards, Bharath ---
**Author:** ![rups](https://avatars.discourse-cdn.com/v4/letter/r/5e9695/32.png) [@rups](https://forum.legato.io/u/rups)\ **Post date:** [December 15, 2017, 5:13am UTC](https://forum.legato.io/t/wifi-connection-establishment-using-wifi-dongle/2486/4 "2017-12-15T05:13:13Z")
thank you. It get solved.