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H&D-Wireless Wi-Fi Module

The Trizeps VIII Mini is available with H&D Wireless SPB228 Wi-Fi Module.
It includes a powerful Marvell 88W997 chipset capable of 802.11 a/b/g/n/ac, 2×2 Wave2 MU-MIMO, Bluetooth 5 Classic, and LE.

Please also view the documentation from H&D Wireless regarding implementing the driver into the OS.

i.e. for Yocto

H&D Wireless supplies a Yocto-recipe.

1. Unpack meta-spb228-pcie-uart-32.tar.gz to your <project-dir>/<build-dir>/sources/-directory.

2. Add

   Code Block
   BBLAYERS += " ${BSPDIR}/meta-spb228-pcie-uart-32 "

   to your <project-dir>/<build-dir>/conf/bblayers.conf

3. Run bitbake

Create wpa_supplicant.conf

$ sudo -i
# wpa_passphrase "<your ssid>" "<your passphrase>" > /etc/wpa_supplicant/wpa_supplicant.conf

Power-Up Interface

$ ifconfig mlan0 up

Scan and Connect to Wi-Fi Network

Simple Scan

$ iw mlan0 scan

Connect manually using wpa_cli

Start wpa_supplicant:

$ wpa_supplicant -Dnl80211 -imlan0 -c/etc/wpa_supplicant.conf &

...

The mlan0 interface needs to be assigned an IP address, to have it functional. Either through DHCP or manually.

Get

...

BT running

Prerequisites

The onboard WiFi/Bluetooth BT module on Trizeps VIII Mini/Trizeps VIII Plus is connected via UART, so all communication is handled by the HCI UART driver, which must be compiled with support for the Marvell protocol. Add the following to your kernel-config:

...

IMAGE_INSTALL += "bluez"

to your image recipe.

Startup

First of all the kernel module must be loaded and the Bluetooth device must be attached to the appropriate UART:

...

$ sudo hciattach /dev/ttymxc3 any 115200 flow

Configuration

After this, you can start the Bluetooth BT interface

$ sudo hciconfig hci0 up

...

[bluetooth]# exit
$

Bluetooth BT devices can also be managed by bluetoothd witch is configured by files in /etc/bluetooth. Nevertheless the kernel module must be loaded and the UART must be attached in some init-script that is executed before bluetoothd is started. Otherwise it will refuse to start.

Notes

Enable & Disable WLAN function of the Device

GPIO3_17 ( GPIO81; see Using a GPIO in Linux) can be used to enable and disable the WLAN function.
Set GPIO high to enable; set GPIO low to disable WLAN function.