Advantech RSB-4221, Руководство пользователя

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31 RSB-4221 User Manual
Chapter 3
S
oftware
Functionality
3.9 LVDS Test
Run program Autorun_LVDS, Then you will see the video demo on the default dis-
play screen.
root@am335x-adv:/unit_tests# ./AutoRun_lvds.sh
3.10 M.2 Mrvl. WIFI/BT Test
RSB-4221 supports MarverllSD8897 wifi/bt modules throught M.2.
To use Marverll SD8897 wifi/bt modules, you have to boot the linux system from
emmc and do following setting under uboot:
AM335X RSB-4221 U-Boot # setenvmmcargs "run bootargs_defaults;setenv-
bootargs console=${console} root=${mmcroot} rootfstype=${mmcrootfstype}
ip=${ip_method} M2WIFIFlag=TRUE"
3.10.1 M.2 wifi Test
1. Connect the marverll WIFI module to M.2 interface under rsb-4221 board, the
supported module is sd8897.
2. Run program test_wifi.sh to load drivers.
root@am335x-adv:/unit_tests/Marverll_8897_driver# ./test_wifi.sh
**************************************************
Begin Set the Wireless
**************************************************
[ 107.156327] cfg80211: Calling CRDA to update world regulatory domain
[ 107.242466] cfg80211: World regulatory domain updated:
[ 107.247870] cfg80211: (start_freq - end_freq @ bandwidth),
(max_antenna_gain, max_eirp)
[ 107.256662] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi,
2000 mBm)