wireless-pi

This is a utility that helps you to power on your raspberry pi3 with wireless network connectivity.

Prerequisite

• a raspberry pi with raspbian
• nodejs (assuming the path of nodejs would be added to the PATH in ~/pi/.bashrc)

How it works

The daemon script tries to use wpa_supplicant to start up your wireless with the configuration in config/wpa_supplicant.conf. If the process fails, the hostapd and dhcpd are executed and serve a web page in http://192.168.127.1:3000. It contains a simple page for you to config your SSID and password. The hostapd here uses a fix format SSID name, something like humix005056c00008. The number after the 'humix' is the HWAddr of your wireless NIC. (If you don't know the HWAddr of your wirless NIC, you can plugin it to your desktop/laptop and query it via ifconfig utilities.) You can use your laptop/desktop/phone to connect to this hotspot and open up the http://192.168.127.1:3000 page to set up the SSID/password that you are going to connect. After you click the 'Submit' button. It will use the settings to bring up the wpa_supplicant. If the SSID/password works, your raspberry pi will be online now. If the wpa_supplicat fails, it will fail back to hostapd again. Then you can re-assign the SSID/password.

Scripts

All of the scripts under scripts folder need to be executed with root permission, means you need to execute the scripts with sudo. You can use these scripts to turn on/off the hotspot mode or connect to a access point manually.

• wpa_util.sh: this is used to stop/stop the wpa_supplicat. The configruation it uses is config/wpa_supplicant.conf. Normally, this file doesn't exit when you install this tool. The config file will be created after you assign the SSID/password in hotspot mode via the page in http://192.168.127.1:3000

• hostap_util.sh: this is used to start/stop the hotspot mode. It uses the config/dhcpd.conf for dhcpd and config/hostapd.conf for hostapd. The fixed IPAddr for the dhcpd is 192.168.127.1.

Installation

• git clone this project
  git clone https://github.com/project-humix/wireless-pi.git
• get into the project directory
  cd wireless-pi
• kick off the installation
  npm install

Make sure that the /etc/network/interfaces should look like this:

source-directory /etc/network/interfaces.d

auto lo
iface lo inet loopback

iface eth0 inet manual

allow-hotplug wlan0

allow-hotplug wlan1