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This application note shows how to run one of such distributions - Debian Jessie - on SBC Lynx. '''It is assumed that the reader if already familiar with''' [[AXEL_ULite_and_SBC_Lynx_Embedded_Linux_Kit_(XUELK)|'''AXEL ULite and SBC Lynx Embedded Linux Kit (XUELK)''']], as it is the basis of this work.
The procedure was tested on a an SBC Lynx with ConfigID=0x0000000C (PCB revision CS214515A), starting from XUELK 1.1.3 binaries.
[1] The only difference with respect to the XUELK kernel image is related to the WiFi driver. To make it work with the Debian root file system, it has to be built as a loadable module instead of a statically linked driver.
[2] The provided root file system is derived from this one: https://rcn-ee.com/rootfs/eewiki/barefs/debian-8.7-bare-armhf-2017-01-14.tar.xz.
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
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The root file system provide provides the [https://wireless.wiki.kernel.org/en/users/documentation/iw <code>iw</code> tool]] that can be used to manage the WiFi interface. For instance First, issue bring the interface up:<pre class="board-terminal">root@arm:~# iw devphy#0 Interface wlan0 ifindex 4 wdev 0x1 addr 88:33:14:5e:30:61 type managedroot@arm:~# ip link show wlan04: wlan0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop qlen 1000 link/ether 88:33:14:5e:30:61 brd ff:ff:ff:ff:ff:ffroot@arm:~# ip link set wlan0 up[ 276.076847] wlcore: firmware booted (Rev 6.3.10.0.133)[ 276.097912] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not readyroot@arm:~# ip link show wlan04: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq qlen 1000 link/ether 88:33:14:5e:30:61 brd ff:ff:ff:ff:ff:ffroot@arm:~# iw wlan0 linkNot connected.</pre> Issue the following command to start scanningscan the networks:
<pre class="board-terminal">
root@arm:~# iw dev wlan0 scan...BSS qq:ww:ee:rr:tt:yy(on wlan0) TSF: 32261107194 usec (0d, 08:57:41) freq: 2437 beacon interval: 100 TUs capability: ESS Privacy ShortPreamble ShortSlotTime (0x0431) signal: -83.00 dBm last seen: 0 ms ago Information elements from Probe Response frame: SSID: ssid Supported rates: 1.0* 2.0* 5.5* 11.0* 18.0 24.0* 36.0 54.0 DS Parameter set: channel 6 ERP: <no flags> ERP D4.0: <no flags> Extended supported rates: 6.0* 9.0 12.0* 48.0 WPA: * Version: 1 * Group cipher: TKIP * Pairwise ciphers: TKIP * Authentication suites: PSK * Capabilities: 16-PTKSA-RC 1-GTKSA-RC (0x000c) WMM: * Parameter version 1 * u-APSD * BE: CW 15-1023, AIFSN 3 * BK: CW 15-1023, AIFSN 7 * VI: CW 7-15, AIFSN 2, TXOP 3008 usec * VO: CW 3-7, AIFSN 2, TXOP 1504 usec...
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