Wireless LAN resources for Linux http://www.hpl.hp.com/personal/Jean_Tourrilhes/Linux/

The linux-wlan™ Project http://www.linux-wlan.org/

Linux Wireless Networking HowTo http://www.siliconvalleyccie.com/linux-hn/wmp11-linux.htm

WLAN Adapter Chipset Directory http://www.linux-wlan.org/docs/wlan_adapters.html.gz

See WLAN Adapter Chipset Directory.

CompactFlash cards using the Prism2/2.5/3 chip set are expected to work (No Guarantee)

Known working Cards:

• D-Link DCF-660W
• Linksys WCF12

Blackfin Interface Card

cf-ide-nand

STAMP Hardware Projects

Under the top level submenu “Device Drivers” you should find the “Network device support” menu.

• 802.11 WLAN Configuration

bfin_cf_pcmcia

[*] Wireless LAN drivers (non-hamradio) & Wireless Extensions
---   Obsolete Wireless cards support (pre-802.11)
< >   STRIP (Metricom starmode radio IP)
< >   AT&T/Lucent old WaveLAN Pcmcia wireless support
< >   Xircom Netwave AirSurfer Pcmcia wireless support
---   Wireless 802.11 Frequency Hopping cards support
< >   Aviator/Raytheon 2.4MHz wireless support
---   Wireless 802.11b ISA/PCI cards support
<*>   Hermes chipset 802.11b support (Orinoco/Prism2/Symbol)
< >   Atmel at76c50x chipset  802.11b support
---   Wireless 802.11b Pcmcia/Cardbus cards support
<*>   Hermes PCMCIA card support
< >   Symbol Spectrum24 Trilogy PCMCIA card support
< >   Blackfin WLAN card support
< >   Cisco/Aironet 34X/35X/4500/4800 PCMCIA cards
< >   Planet WL3501 PCMCIA cards
< >   IEEE 802.11 for Host AP (Prism2/2.5/3 and WEP/TKIP/CCMP)

• External Bus Interface Unit EBIU Configuration

• Adjusting System Clock Speed

In order to configure the WLAN Interface iwconfig is needed

Change configuration during kernel configuration.

bfin_cf_pcmcia

see also here gpio_interrupt_processing

schematics hardware instructions

root:~> dmesg
Linux version 2.6.12.1 (michael@mhenner-D01) (gcc version 3.4.4) #8 Tue Nov 15 5
Blackfin support (C) 2004 Analog Devices, Inc.
ADSP-BF537 Rev. 0.2
uClinux/BF537
Blackfin uClinux support by blackfin.uclinux.org
Processor Speed: 500 MHz core clock and 71 Mhz System Clock
Board Memory: 64MB
Memory map:
  text = 0x001000-0x0cc7c0
  data = 0x0d90fc-0x0f75b0
  bss  = 0x0f75b0-0x104e24
  rootfs = 0x3b00000-0x3f00000
  stack = 0x0da000-0x0dc000
Command line: 'root=/dev/mtdblock0 rw'
On node 0 totalpages: 15104
  DMA zone: 0 pages, LIFO batch:1
  Normal zone: 15104 pages, LIFO batch:7

  HighMem zone: 0 pages, LIFO batch:1
Instruction Cache Enabled
Data Cache Enabled (write-through)
Hardware Trace Enabled
Built 1 zonelists
Kernel command line: root=/dev/mtdblock0 rw
Configuring Blackfin Priority Driven Interrupts
PID hash table entries: 256 (order: 8, 4096 bytes)
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Physical pages: 3b00
Memory available: 58752k/64667k RAM, (47k init code, 813k kernel code, 175k dat)
Blackfin Scratchpad data SRAM: 4 KB
Blackfin DATA_A SRAM: 16 KB
Blackfin DATA_B SRAM: 16 KB
Calibrating delay loop... 996.14 BogoMIPS (lpj=4980736)
Security Framework v1.0.0 initialized
Capability LSM initialized
Mount-cache hash table entries: 512
NET: Registered protocol family 16
Blackfin DMA Controller for BF533
stamp_init(): registering device resources
Real Time Clock Driver v1.10e
BlackFin BF533 serial driver version 2.00 With DMA Support
io scheduler noop registered
io scheduler cfq registered
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
orinoco 0.14alpha2 (David Gibson <hermes@gibson.dropbear.id.au>, Pavel Roskin <)
orinoco_wlan_blackfin.c (Michael Hennerich <hennerich@blackfin.uclinux.org>)
orinoco_wlan_blackfin: CIS: 01:03:00:00:FF:17:04:67:
Detected Orinoco/Prism2 WLAN BLACKFIN device at irq:34, io addr:0x20300000

Blackfin WLAN interrupt setup: flag PF4, irq 34
eth1: Hardware identity 801b:0000:0001:0000
eth1: Station identity  001f:0002:0001:0004
eth1: Firmware determined as Intersil 1.4.2
eth1: Ad-hoc demo mode supported
eth1: IEEE standard IBSS ad-hoc mode supported
eth1: WEP supported, 104-bit key
eth1: MAC address 00:0F:66:10:C7:11
eth1: Station name "Prism  I"
eth1: ready
uclinux[mtd]: RAM probe address=0x3b00000 size=0x400000
Creating 1 MTD partitions on "RAM":
0x00000000-0x00400000 : "EXT2fs"
uclinux[mtd0]: set EXT2fs to be root filesystem
NET: Registered protocol family 2
IP: routing cache hash table of 512 buckets, 4Kbytes
TCP established hash table entries: 2048 (order: 2, 16384 bytes)
TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
TCP: Hash tables configured (established 2048 bind 2048)
NET: Registered protocol family 1
NET: Registered protocol family 17
VFS: Mounted root (ext2 filesystem).
Freeing unused kernel memory: 44k freed (0xcd000 - 0xd7000)
ttyS0 at irq = 18 is a builtin BlackFin UART
dma_alloc_init: dma_page @ 0x000d3000 - 256 pages at 0x03f00000
bfin_change_speed: baud = 57600, cval = 0x13
root:~>

• To connect directly to another PC, on the Blackfin:

  root:~> iwconfig eth1 nickname "STAMP" mode Ad-Hoc  essid "foo"
  root:~> ifconfig eth1 192.168.1.2 up
  root:~> eth1: New link status: Connected (0001)

  and on the host PC (as root):

  imhotep:/home/rgetz # iwconfig eth1 mode Ad-Hoc essid "foo"
  imhotep:/home/rgetz # ifconfig eth1 192.168.1.3 up
  imhotep:/home/rgetz # ping 192.168.1.2
  PING 192.168.1.2 (192.168.1.2) 56(84) bytes of data.
  64 bytes from 192.168.1.2: icmp_seq=1 ttl=64 time=1026 ms
  64 bytes from 192.168.1.2: icmp_seq=2 ttl=64 time=31.8 ms
  64 bytes from 192.168.1.2: icmp_seq=3 ttl=64 time=3.48 ms
  64 bytes from 192.168.1.2: icmp_seq=4 ttl=64 time=5.43 ms

• To connect to an access point:

  root:~> iwconfig eth1 essid dlink key s:12345
  root:~> dhcpcd eth1 &
  28
  root:~> eth1: New link status: Connected (0001)
  root:~> iwconfig
  lo        no wireless extensions.
  
  eth0      no wireless extensions.
  
  eth1      IEEE 802.11-DS  ESSID:"dlink"  Nickname:"Prism  I"
            Mode:Managed  Frequency:2.437GHz  Access Point: 00:13:46:C7:A2:EE
            Bit Rate:11Mb/s   Tx-Power=15 dBm   Sensitivity:1/3
            Retry min limit:8   RTS thr:off   Fragment thr:off
            Encryption key:3132-3334-35   Security mode:open
            Power Management:off
            Link Quality:88/92  Signal level:5/153  Noise level:119/153
            Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
            Tx excessive retries:0  Invalid misc:0   Missed beacon:0
  
  root:~>

root:~> ifconfig
eth1      Link encap:Ethernet  HWaddr 00:0F:66:10:C7:11
          inet addr:192.168.0.100  Bcast:192.168.0.255  Mask:255.255.255.0
          UP BROADCAST NOTRAILERS RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:30 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
                    Interrupt:34

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  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

root:~>

root:~> ping 192.168.0.1
PING 192.168.0.1 (192.168.0.1): 56 data bytes
64 bytes from 192.168.0.1: icmp_seq=0 ttl=127 time=3.1 ms
64 bytes from 192.168.0.1: icmp_seq=1 ttl=127 time=2.7 ms
64 bytes from 192.168.0.1: icmp_seq=2 ttl=127 time=2.7 ms
64 bytes from 192.168.0.1: icmp_seq=3 ttl=127 time=2.6 ms
64 bytes from 192.168.0.1: icmp_seq=4 ttl=127 time=3.6 ms
64 bytes from 192.168.0.1: icmp_seq=5 ttl=127 time=2.6 ms
64 bytes from 192.168.0.1: icmp_seq=6 ttl=127 time=2.8 ms
64 bytes from 192.168.0.1: icmp_seq=7 ttl=127 time=2.7 ms

--- 192.168.0.1 ping statistics ---
8 packets transmitted, 8 packets received, 0% packet loss
round-trip min/avg/max = 2.6/2.8/3.6 ms
root:~>