Using Wireless USB Adapters
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Procedure to Enable Wireless USB Adapters on Electrum100
Electrum100 no longer needs a wired connection to communicate to the outside world. Wireless access to the board is a very convenient option for many practical scenarios where deployment is remote.
Electrum100 powered by a battery provides our Customers with an option to deploy and access the board without any wired connections, making the Deployment very easy and convenient. Feel Free to contact support@micromint.com for further queries and support. For product details visit our site at http://www.micromint.com.
The Following procedure helps in configuring the Wireless USB adapters for your Electrum100 board.
Tested on
- LINKSYS WUSB54GC Version 1; Chipset & Driver: Ralink RT2501USB / RT73
- BELKIN F5D9050; Chipset & Driver: Ralink RT2501USB / RT73
- SMC EX Connect g 802.11g Wireless USB 2.0 Adapter; Chipset & Driver: ZyDAS / ZD1211
1) Make sure that the Kernel has Configurations required to enable Wireless USB. ( In this example RT2X00, RT73USB, ZD1211 modules are enabled.)
CONFIG_CFG80211=y CONFIG_NL80211=y CONFIG_WIRELESS_EXT=y CONFIG_WIRELESS_EXT_SYSFS=y CONFIG_MAC80211=y CONFIG_MAC80211_RC_PID=y CONFIG_MAC80211_RC_DEFAULT_PID=y CONFIG_MAC80211_RC_DEFAULT="pid" CONFIG_WLAN_80211=y CONFIG_RT2X00=m CONFIG_RT2X00_LIB=m CONFIG_RT2X00_LIB_USB=m CONFIG_RT2X00_LIB_FIRMWARE=y CONFIG_RT2X00_LIB_LEDS=y CONFIG_RT73USB=m CONFIG_ZD1211RW=m CONFIG_RT73USB_LEDS=y CONFIG_CRYPTO=y CONFIG_CRYPTO_ALGAPI=y CONFIG_CRYPTO_BLKCIPHER=y CONFIG_CRYPTO_MANAGER=y CONFIG_CRYPTO_ECB=y CONFIG_CRYPTO_AES=y CONFIG_CRYPTO_ARC4=y CONFIG_CRYPTO_HW=y CONFIG_CRC_ITU_T=y
2) Start Electrum100 with the newly Built Kernel.
3) Update the list of available packages, then install the firmware-ralink, wireless-tools, wpasupplicant packages:
Electrum100~# apt-get update Electrum100~# apt-get install firmware-ralink wireless-tools wpasupplicant
4) Add appropriate lines for your wireless network connection and restart the board.
Electrum100~# vi /etc/network/interfaces #Wirless USB auto wlan0 iface wlan0 inet dhcp wpa-psk password wpa-driver wext wpa-key-mgmt WPA-PSK wpa-proto WPA2 wpa-ssid micromint
5) If not already performed, connect the device to your system.
The necessary kernel module should be automatically loaded. If necessary, it can be manually loaded using(example):
Electrum100~# modprobe rt73usb
6) Verify If your device has an available interface:
Electrum100~# iwconfig
Note: You can disable the Wired-Network by using "ifconfig eth0 down".
7) Bring your interface up. This will start wpa_supplicant as a background process.
Electrum100# ifup wlan0
8) To go back to Wired Network:
Electrum100/# ifdown wlan0
Unplug the wireless device and connect the LAN cable
Electrum100/# ifconfig eth0 up