Wi-Fi Demo

Check your SD Card Version

The SD Card version is printed on the SD card's package.

This documentation is only valid for SD 2.2. For demos other than SD2.2, refer to the new Getting Started page. To download and burn a new SD card image, see this page.

SD 2.2 Demos

The SD 2.2 SD card includes demos for the two supported modes: Station and SoftAP (Software enabled Access Point).

Hardware Requirements

To use this guide, the following components are needed:

• Raspberry Pi board
  • Versions supported: Pi2 model B V1.2 or Pi3 model B.

    Note: Pi models 3B+ and 4B are not supported by SD 2.2

• Raspberry Pi power supply
• WF200 devkit (BRD8022A)
• Silabs SD card
• Network cable

Software Requirements

Note: Please use Firefox or Chrome to download the following software because Internet Explorer is not supported.

The SD 2.2 Station and SoftAP demos are started via a ssh connection.

SSH Connection

To remotely access the Raspberry Pi from a Windows machine, some tools need to be installed:

• To enable ssh access with X11 support, download and install MobaXterm Home Edition (Installer edition) from https://mobaxterm.mobatek.net/
• To enable multicast name resolution (mDNS), download and install Apple Bonjour from https://support.apple.com/kb/DL999 (During installation, we recommend that you uncheck all options.)

With MobaXterm, create and open a ssh session to the Raspberry Pi with the following parameters:

• Host: silabs-pi-demo.local
• Username: pi
• Password: default_password

All the following commands will be entered in the newly open ssh console.

Station Demo

This demo configures the Raspberry Pi and WF200 to work as a Wi-Fi Station which can connect to an access point. To start it, run:

sudo wfx_demo_station

Note: Minimize MobaXterm window, then wait a few seconds for the Wi-Fi tool to appear.

This will launch a graphical tool named “wpa_gui” which supports the following actions:

1. Scan.
2. Select the desired Wi-Fi access point.
3. Enter credentials if need be, and then add.

Once connected, it is possible to perform some traffic:

ping silabs.com

Note: With keyboard, mouse, and screen attached to the Raspberry Pi, it is possible to launch a browser by clicking the “Silicon Labs Website” icon on the desktop.

SoftAP Demo

This demo configures the Raspberry Pi and WF200 to work as a Wi-Fi SoftAP which can accept stations. To start it, run:

sudo wfx_demo_ap

Then it is possible to connect to the Raspberry Pi using a Wi-Fi capable device and the following credentials:

• SSID: silabs-pi-demo
• Passphrase: default_password

On the device, use a browser to open http://silabs-pi-demo.wlan/

The host supports a Web server which exposes a user-accessible Web page.