# WLAN USB adapter to MangOH **URL:** \ **Category:** Legato Application Framework\ **Created:** [January 8, 2016, 4:10pm UTC](https://forum.legato.io/t/wlan-usb-adapter-to-mangoh/179 "2016-01-08T16:10:53Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Vkuehne](https://avatars.discourse-cdn.com/v4/letter/v/8491ac/32.png) [@Vkuehne](https://forum.legato.io/u/Vkuehne)\ **Post date:** [January 8, 2016, 4:10pm UTC](https://forum.legato.io/t/wlan-usb-adapter-to-mangoh/179/1 "2016-01-08T16:10:53Z")
Hello, I connected a WLAN USB ISY IWL2000 Adapter to MangOH. root@swi-mdm9x15:/# lsusb Bus 001 Device 006: ID 050d:11f2 Belkin Components ISY Wireless Micro Adapter IWL 2000 [RTL8188CUS] Bus 001 Device 004: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter Bus 001 Device 003: ID 0424:9514 Standard Microsystems Corp. Bus 001 Device 002: ID 0424:3503 Standard Microsystems Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub ifconfig does not list wlan0 root@swi-mdm9x15:/# ifconfig eth0 Link encap:Ethernet HWaddr 52:AE:24:AA:76:ED UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) usb0 Link encap:Ethernet HWaddr D2:C4:29:83:98:B3 inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::d0c4:29ff:fe83:98b3/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:501 errors:0 dropped:0 overruns:0 frame:0 TX packets:291 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:37527 (36.6 KiB) TX bytes:47365 (46.2 KiB) Which steps should I follow to configure it? ---
**Author:** ![JayM2M](https://avatars.discourse-cdn.com/v4/letter/j/3d9bf3/32.png) [@JayM2M](https://forum.legato.io/u/JayM2M)\ **Post date:** [January 22, 2016, 4:49pm UTC](https://forum.legato.io/t/wlan-usb-adapter-to-mangoh/179/2 "2016-01-22T16:49:53Z")
Hi, You need to add kernel driver for the Realtek RTL8188CUS chipset. So, you have to play a bit with Yocto in order to rebuild new kernel/rootfs images with all the needed stuff. RTL8188CUS is using the same driver as RTL8192CU: check other projects like Raspberry Pi or OpenWRT for info about how to integrate such a driver. Also, maybe some existing Yocto recipes like the following one can help: [github.com/resin-io/meta-resin/ … .2\_9000.bb](https://github.com/resin-io/meta-resin/blob/master/meta-resin-common/recipes-kernel/rtl8192cu/rtl8192cu_4.0.2_9000.bb) Jay ---
**Author:** ![JayM2M](https://avatars.discourse-cdn.com/v4/letter/j/3d9bf3/32.png) [@JayM2M](https://forum.legato.io/u/JayM2M)\ **Post date:** [January 29, 2016, 1:47pm UTC](https://forum.legato.io/t/wlan-usb-adapter-to-mangoh/179/3 "2016-01-29T13:47:58Z")
Hi, I did the exercise to integrate all the drivers and tools in order to support USB WiFi dongles based on Realtek RTL8192CU/RTL8188CUS chipset. It is working fine on my mangOH board with WP8548 running the firmware SWI9X15Y\_07.05.01.00 (the one delivered with Legato 15.10). My WiFi dongle used for the test is the famous Edimax EW-7811UN (based on RTL8188CUS). If you want to test it, I have uploaded a Yocto image (kernel+rootfs) for WP85 target: [Yocto image (only for SWI9X15Y\_07.05.01.00)](http://s000.tinyupload.com/?file_id=87907125914005278044) [color=#FF0000]Warning[/color]: Prior to install this image, your mangOH board (WP8548 module) must be already upgraded to Legato 15.10 (firmware SWI9X15Y\_07.05.01.00). [color=#FF0000]Do not try to install it on top of another version.[/color] Then, here is an example about how to use it: [code]# modprobe rtl8192cu # iw dev wlan0 info Interface wlan0 ifindex 12 wdev 0x1 addr 74:da:38:xx:xx:xx type managed wiphy 0 # ifconfig wlan0 up # wpa\_supplicant -B -i wlan0 -c wifi.conf Successfully initialized wpa\_supplicant [479.072394] wlan0: authenticate with 00:1a:1e:xx:xx:xx [479.114146] wlan0: send auth to 00:1a:1e:xx:xx:xx (try 1/3) [479.123363] wlan0: authenticated [479.126323] rtl8192cu 1-1.3.2:1.0 wlan0: disabling HT as WMM/QoS is not supported by the AP [479.142652] rtl8192cu 1-1.3.2:1.0 wlan0: disabling VHT as WMM/QoS is not supported by the AP [479.167312] wlan0: associate with 00:1a:1e:xx:xx:xx (try 1/3) [479.178605] wlan0: RX AssocResp from 00:1a:1e:xx:xx:xx (capab=0x431 status=0 aid=1) [479.188310] wlan0: associated [479.190324] IPv6: ADDRCONF(NETDEV\_CHANGE): wlan0: link becomes ready # iw dev wlan0 link Connected to 00:1a:1e:xx:xx:xx (on wlan0) SSID: MYWIFIHOTSPOT freq: 2412 RX: 88966 bytes (1616 packets) TX: 978 bytes (10 packets) signal: -40 dBm tx bitrate: 18.0 MBit/s ``` bss flags: short-preamble short-slot-time dtim period: 0 beacon int: 100 ``` # udhcpc -i wlan0 udhcpc (v1.22.1) started Sending discover… Sending select for 192.168.40.190… Lease of 192.168.40.190 obtained, lease time 28800 /etc/udhcpc.d/50default: Adding DNS 8.8.8.8 /etc/udhcpc.d/50default: Adding DNS 4.2.2.2 # ifconfig wlan0 wlan0 Link encap:Ethernet HWaddr 74:DA:38:xx:xx:xx inet addr:192.168.40.190 Bcast:192.168.40.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:8 errors:0 dropped:0 overruns:0 frame:0 TX packets:17 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1204 (1.1 KiB) TX bytes:2614 (2.5 KiB) # ping -c 4 [www.legato.io](http://www.legato.io) PING [www.legato.io](http://www.legato.io) (185.31.18.133): 56 data bytes 64 bytes from 185.31.18.133: seq=0 ttl=54 time=23.226 ms 64 bytes from 185.31.18.133: seq=1 ttl=54 time=25.729 ms 64 bytes from 185.31.18.133: seq=2 ttl=54 time=20.968 ms 64 bytes from 185.31.18.133: seq=3 ttl=55 time=25.515 ms — [www.legato.io](http://www.legato.io) ping statistics — 4 packets transmitted, 4 packets received, 0% packet loss round-trip min/avg/max = 20.968/23.859/25.729 ms[/code] * * * Jay ---
**Author:** ![Vkuehne](https://avatars.discourse-cdn.com/v4/letter/v/8491ac/32.png) [@Vkuehne](https://forum.legato.io/u/Vkuehne)\ **Post date:** [February 3, 2016, 5:23pm UTC](https://forum.legato.io/t/wlan-usb-adapter-to-mangoh/179/4 "2016-02-03T17:23:58Z")
Hi Jay, now it works. root@swi-mdm9x15:~# ifconfig eth0 Link encap:Ethernet HWaddr 9A:D4:75:C2:9B:D7 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) usb0 Link encap:Ethernet HWaddr F2:A9:2C:54:0D:B3 inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::f0a9:2cff:fe54:db3/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:6063 errors:0 dropped:0 overruns:0 frame:0 TX packets:8261 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:464100 (453.2 KiB) TX bytes:4654500 (4.4 MiB) wlan0 Link encap:Ethernet HWaddr EC:1A:59:D5:80:5E inet addr:192.168.137.179 Bcast:192.168.137.255 Mask:255.255.255.0 inet6 addr: fe80::ee1a:59ff:fed5:805e/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:13 errors:0 dropped:0 overruns:0 frame:0 TX packets:13 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:2405 (2.3 KiB) TX bytes:2133 (2.0 KiB) root@swi-mdm9x15:~# ping [www.google.de](http://www.google.de) PING [www.google.de](http://www.google.de) (173.194.112.143): 56 data bytes 64 bytes from 173.194.112.143: seq=0 ttl=47 time=78.224 ms 64 bytes from 173.194.112.143: seq=1 ttl=47 time=113.017 ms Thanks!! ---
**Author:** ![vincelai520](https://avatars.discourse-cdn.com/v4/letter/v/a4c791/32.png) [@vincelai520](https://forum.legato.io/u/vincelai520)\ **Post date:** [November 22, 2016, 1:01am UTC](https://forum.legato.io/t/wlan-usb-adapter-to-mangoh/179/5 "2016-11-22T01:01:26Z")
Hi Jay, I bought a Wi-Fi USB dongle, EDIMAX EW-7811Un, which chip is rtl8188cu and the driver is compatible with rtl8192cu. I found there is rtl8192cu driver in Legato-Dist-Source-mdm9x15-SWI9X15Y\_07.11.09.00. I create rtl8192cu.cfg in meta-swi/meta-swi-mdm9x15/recipes-kernel/linux/files/ as the following CONFIG\_AVERAGE=y Generic 802.11 Support: CONFIG\_CFG80211=m CONFIG\_CFG80211\_DEFAULT\_PS=y CONFIG\_MAC80211=m CONFIG\_MAC80211\_HAS\_RC=y CONFIG\_MAC80211\_RC\_MINSTREL=y CONFIG\_MAC80211\_RC\_MINSTREL\_HT=y CONFIG\_MAC80211\_RC\_DEFAULT\_MINSTREL=y CONFIG\_MAC80211\_RC\_DEFAULT=“minstrel\_ht” CONFIG\_CFG80211\_WEXT=y USB 802.11 Devices: CONFIG\_RTL8192CE=m CONFIG\_RTL8192CU=m CONFIG\_RTLWIFI=m CONFIG\_RTLWIFI\_DEBUG=y CONFIG\_RTL8192C\_COMMON=m Rfkill support (used by wireless/bluetooth devices) CONFIG\_RFKILL=m CONFIG\_RFKILL\_LEDS=y Add cpu temperature support (Not related to 802.11, but a nice thing to have) CONFIG\_SENSORS\_CORETEMP=m Edit meta-swi/meta-swi-mdm9x15/recipes-kernel/linux/linux-yocto\_3.14.bbappend SRC\_URI += “file://rtl8192cu.cfg” After make yocto, I got rtlwifi.ko, rtl\_usb.ko, rtl8192cu.ko, and rtl8192c-common.ko, but without RTL8192CE.ko, why? When I modpobe rtl8192cu, I got the error message. modprobe: can’t load module rtl\_usb (kernel/drivers/net/wireless/rtlwifi/rtl\_usb.ko): unknown symbol in module, or unknown parameter dmesg log is [19.357942] mbim\_read: Requests list is empty. Wait. [129.082923] Loading modules backported from Linux version R8.5 [129.095070] Backport generated by backports.git R8.5 [129.235373] cfg80211: Calling CRDA to update world regulatory domain [129.485121] rtlwifi: Unable to register rtl\_rc, use default RC !! [129.491622] rtl\_usb: Unknown symbol ieee80211\_rx (err 0) Can I modify the configuration file in arch/arm/configs/ ? If so, which configuration do I need to modify? Thank you very much!