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RaspberryPiwirelessadapter

Hardware

ThisguideisaboutinstallingtheEdimaxEW‐7811Un

nanowirelessadapteronaRaspberryPiwitha

wirelessroutersupportingDHCPandconfiguredtouseWPA2‐PSK.Theguidemaybeusefulfor

installingotherwirelessadaptersaswellandforconfiguringWPA‐PSK.

Software

ThesoftwareusedwastheDebiansqueezepackage

debian6-19-04-2012.imgplusa

replacementdrivermodule(

8192cu.ko)availablefromhere.Thedriverisatar.gzfileandneeds

tobeunpackedtwice.Noothermodificationsweremadetothesoftware.

Powersupply

Therehavebeenreportsthatwirelessadapterstakealotofpower,buttheRaspberryPiwithan

EW‐7811UnadapterrunsonaSamsungMicroUSBmainscharger,astandardKindlepower

supply

andeventheKindleleadattachedtoaUSBhubonalaptoprunningonbatterypower.

AccessingRPi

Itispossibletoconfiguretheadapterusing

sshoverEthernet,butitisaloteasiertoseeerror

messagesifadisplayscreenisdirectlyattached.

Configuration

Allofthisconfigurationneedstobedoneasaprivilegeduser,soyoucanprefixalltheediting

commandswith

sudoorjustrun“sudo su”toturnyourselfintoanadministrator.

/etc/udev/rules.d/70‐persistent‐net.rules

Deleteanythinginthisfileaboutwlan0orwlan1.Thisfileisusedtorememberthephysical

characteristicsofUSBadaptersandmaywellcontainincorrectormisleadinginformation,and

shouldbeemptyapartfromcommentsunless youhaveaddedother

USBdevices.

/etc/network/interfaces

Updatethisfiletoaddthewlan0section,sothatitlookslikethis.

# Used by ifup(8) and ifdown(8). See the interfaces(5) manpage or

# /usr/share/doc/ifupdown/examples for more information.

auto lo

iface lo inet loopback

iface eth0 inet dhcp

auto wlan0

iface wlan0 inet dhcp

pre-up wpa_supplicant -Dwext -i wlan0 -c /etc/wpa_supplicant.conf -B

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Strona 1

RaspberryPiwirelessadapterHardwareThisguideisaboutinstallingtheEdimaxEW‐7811UnnanowirelessadapteronaRaspberryPiwithawirelessrou

Strona 2

/etc/wpa_supplicant.confCreatethisfilelookinglikethefollowing.ctrl_interface=/var/run/wpa_supplicant ctrl_interface_group=0 ap_scan=2 network=

Strona 3

1. Ifthebluelightontheadaptercomeson,buttheadapterdoesnotacquireanIPaddress,theproblemisinwpa_supplicant.conf.ifconfigwills

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Raspberry Pi A Instrukcja Użytkownika

Przeglądaj online lub pobierz Instrukcja Użytkownika dla Płyty główne Raspberry Pi A. Raspberry Pi wireless adapter Hardware This guide is Instrukcja obsługi

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