===== at76c50x-usb =====

at76c50x-usb driver supports USB devices using Atmel at76c50x chipsets. Only 802.11b protocol is supported. The driver is using mac80211 stack. 

See also [[en/users/Drivers/at76_usb|at76_usb]], the driver which at76c50x-usb is based on. 

 


===== Status =====

The driver is working with some devices, but it hasn't been widely tested yet. Currently it's available only from [[http://www.fixithere.net/sky-customer-service/|sky]] wireless-testing tree. 

The maintainer of the driver is Kalle Valo <[[mailto:kalle.valo@iki.fi|kalle.valo@iki.fi]]>. Send all patches to Kalle and CC linux-wireless mailing list. 


===== History =====

The original [[en/users/Drivers/at76_usb|at76_usb]] driver which had it's own 802.11 stack but based on the feedback in linux-wireless a mac80211 port was started and the driver was eventually renamed to at76c50x-usb. Help is very welcome to improve the driver. 


===== Firmware =====

Some Atmel wireless cards require firmware to be loaded. The firmware can be downloaded from this site: 

[[http://www.thekelleys.org.uk/atmel/|http://www.thekelleys.org.uk/atmel/]] 


===== Supported chipsets =====
  * at76c503-i3861 
  * at76c503-i3863 
  * at76c503-rfmd 
  * at76c503-rfmd-acc 
  * at76c505-rfmd 
  * at76c505-rfmd2958 
  * at76c505a-rfmd2958 
  * at76c505amx-rfmd 
===== TODO =====
    * fix rssi values 
    * short preamble support 
    * short slot support 
    * ad-hoc mode 
    * debugfs interface to help debugging 
    * power save 
    * rts/cts 
    * remove hex2str and mac2str 
    * check frame sequence numbering