Sagacious Himself — brevity in circumlocution: never blague — suffering genius

July 21, 2014

realtek RTL8192CU

Filed under: Download,Geeky goodness,Hardwares,Raspberry Pi — Sagacious Himself @ 4:27 pm
Tags:

For low cost client compatibility with Atheros AP we opted for RealTek RTL8192CU.

  • IEEE 802.11b/g/n WLAN Controller with USB 2.0 Interface
  • a MAC, a 2T2R capable baseband, and RF in a single chip
  • as Realtek RTL8192CU-GR
  • ProductID 277

Working backwards from selected chipset we selected a manufacturer least likely to abandon driver development:  TP-Link, TrendNet.  This left less desirable: Belkin, BenQ, D-Link, Edimax, Hawking, Netgear, Rosewill, and the balance from the listed 48.

linux: lsusb

 

OSX: system_profiler SPUSBDataType

Product ID: 0x8178
Vendor ID: 0x0bda  (Realtek Semiconductor Corp.)
Version:  2.00
Serial Number: 00e04cXXXXXX
Speed: Up to 480 Mb/sec
Manufacturer: 802.11n
Location ID: 0xfa200000 / 3
Current Available (mA): 500
Current Required (mA): 500

 

as TP-LINK TL-WN823N   (available only as V1 in support site)

2T2R [mimo 2×2:2]

https://wikidevi.com/wiki/Realtek

The MAC address of the tested units seems to be cloned.  Fun.

One flavor of RTL8191SU-GR [ProductID 231] is available as 2X2:2 also in 27 products.

 

That RTL8192CU vs that RTL8191SU

  • RTL8192CU additionally:  receiver diversity up to two antennas
  • RTL8192CU additionally:  two independent RF blocks, the RTL8192CU can perform fast roaming without link interruption
  • RTL8192CU only:  64-pin QFN
  • RTL8192CU only: IEEE 802.11h TPC, Spectrum Measurement
  • RTL8192CU only: IEEE 802.11k Radio Resource Measurement
  • _peripheral  (it’s not worth fighting wordpress outline ‘features’)
  • CU: general purpose IO pins: 10
  • SU: general purpose IO pins: 8
  • CU: configurable LED pins: 3
  • SU: configurable LED pins: 2

 

Unique to SU standards

  • Cisco Compatible Extensions (CCX4)

 

Amidst other features both share

  • Multiple BSSID feature allows … multiple MAC identities when used as a wireless bridge

 

 

RTL8192CU RealTek drivers, version 2.0.1

realtek.com.tw/downloads/downloadsView.aspx?Langid=1&PNid=21&PFid=48&Level=5&Conn=4&ProdID=277&DownTypeID=3&GetDown=false&Downloads=true

current to 2012 october

 

 

uninstall script for OS X includes

 

echo “Uninstalling Script and Utility …”
sudo killall -c Wireless\ Network\ Utility
sleep 2
sudo rm -rf /Library/StartupItems/WirelessNetworkUtility

echo “Uninstalling UI…”
sudo rm -rf /Library/LaunchAgents/Wlan.Software.plist
sudo rm -rf /Applications/Wireless\ Network\ Utility.app

echo “Removing Driver…”
sudo kextunload /System/Library/Extensions/RTL8192SU8.kext
sudo rm -rf /System/Library/Extensions/RTL8192SU8.kext
sudo kextunload /System/Library/Extensions/RTL8192CU8.kext
sudo rm -rf /System/Library/Extensions/RTL8192CU8.kext

As one packages serves two flavors

    <choice id=”choice7″ title=”RTL8192CU”>
<pkg-ref id=”com.WirelessDriverCU.pkg”/>
</choice>
<choice id=”choice8″ title=”RTL8192SU”>
<pkg-ref id=”com.WirelessDriverSU.pkg”/>
</choice>

And some startup joy

<key>Label</key>
<string>Wlan.Software</string>
<key>Program</key>
<string>/Applications/Wireless Network Utility.app/Contents/MacOS/Wireless Network Utility</string>
<key>RunAtLoad</key>
<true/>

 

TP-Link “V1” driver

tp-link.com/en/support/download/?model=TL-WN823N

 

 

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