80211 WiFi Usage and Configuration¶

Critical Link TiWi based 802.11 and Bluetooth Adapter¶

This adapter has been verified to be functional with the MitySOM-335x Development Kit. For details concerning the use of this module please see our MitySOM-335x Development Kit WiFi page here: http://support.criticallink.com/redmine/projects/am335x-devkit/wiki/Wifi_Module_configuration

Commercial Temperature Rated USB Adapters¶

Currently we have verified the following USB WiFi adapters:

Brand	Model	Wireless Chipset	Chipset Brand	Kernel Version	USB Port	SoM	Verified/Tested	Temp Range
TPLink	TL-WN727N	RT2870sta	RALink	3.2.0	2.0	3359	Yes	0C to 40C

Wireless Transfer Statistics¶

Please visit the MityARM-335x WiFi Statistics wiki page to view results from throughput testing of the mentioned adapters.

Using the AM335X Development kit as a Wireless Access Point

AM335X Modules with built-in wifi¶

The dash R2 (-R2) modules have an LSR Wl1271 TiWi module built in. The tiwi is connected to the SDIO bus via MMC 1. It also uses uart1 for the bluetooth connection.
The following pins are used:

• Pin 93 - gpmc_ad8.mmc1_dat0
• Pin 95 - gpmc_ad9.mmc1_dat1
• Pin 97 - gpmc_ad10.mmc1_dat2
• Pin 99 - gpmc_ad11.mmc1_dat3
• Pin 111 - gpmc_csn2.mmc1_cmd
• Pin 113 - gpmc_csn1.mmc1_clk
• Pin 173 - uart1_rxd.uart1_rxd
• Pin 175 - uart1_txd.uart1_txd
• Pin xxx - uart1_ctsn.uart1_ctsn
• Pin xxx - uart1_rtsn.uart1_rtsn
• Pin 101 - gpmc_ad12.gpio1_12
• Pin 103 - gpmc_ad13.gpio1_13
• Pin 94 - gpmc_csn3.gpio2_0
  The kernel config option MITYARM335X_TIWI selects this configuration.