mirror of
https://github.com/oliverschmidt/contiki.git
synced 2024-09-11 21:55:41 +00:00
100 lines
3.0 KiB
Markdown
100 lines
3.0 KiB
Markdown
This README contains information how to establish an IPv6 connecton between
|
|
Linux BLE router and an IPSP enabled BLE device.
|
|
|
|
Prerequisites
|
|
=============
|
|
In general, any device capable of running Linux operating system, can be used
|
|
as a BLE router provided the following conditions are met:
|
|
|
|
* Linux Kernel >3.18 is used
|
|
* bluez, libcap-ng0, radvd tools are present.
|
|
|
|
If a built-in Bluetooth device is not available then Bluetooth 4.0 compatible
|
|
USB dongle can be used.
|
|
|
|
The following procedures have been tested on Ubuntu 15.10.
|
|
|
|
Establishing an IPv6 connection
|
|
===============================
|
|
Use the following procedure to establish a connection between an nRF52 device
|
|
and Linux router:
|
|
|
|
First enable 6LoWPAN module. This is neccessary only once per session:
|
|
|
|
# Log in as a root user.
|
|
sudo su
|
|
|
|
# Mount debugfs file system.
|
|
mount -t debugfs none /sys/kernel/debug
|
|
|
|
# Load 6LoWPAN module.
|
|
modprobe bluetooth_6lowpan
|
|
|
|
# Enable the bluetooth 6lowpan module.
|
|
echo 1 > /sys/kernel/debug/bluetooth/6lowpan_enable
|
|
|
|
# Look for available HCI devices.
|
|
hciconfig
|
|
|
|
# Reset HCI device - for example hci0 device.
|
|
hciconfig hci0 reset
|
|
|
|
# Read 00:AA:BB:XX:YY:ZZ address of the nRF5x device.
|
|
hcitool lescan
|
|
|
|
If you see device name and address in lescan output then you can connect to the
|
|
device:
|
|
|
|
echo "connect 00:AA:BB:XX:YY:ZZ 1" > /sys/kernel/debug/bluetooth/6lowpan_control
|
|
|
|
If above is successful then LED1 will stop blinking and LED2 will switch on.
|
|
You can then check the connection using the following commands:
|
|
|
|
# Check if bt0 interface is present and up
|
|
ifconfig
|
|
|
|
# Try to ping the device using its link-local address, for example, on bt0 interface.
|
|
ping6 -I bt0 fe80::2aa:bbff:fexx:yyzz
|
|
|
|
If you'd like to learn more about the procedure please refer to
|
|
[Connecting devices to the router].
|
|
|
|
Distributing routable IPv6 prefix
|
|
=================================
|
|
In Linux, Router Advertisement Daemon (RADVD) can be used to distribute prefixes
|
|
in the network, hance configure routable IPv6 address.
|
|
|
|
To configure RADVD create `/etc/radvd.conf` file and paste the following contents:
|
|
|
|
interface bt0
|
|
{
|
|
AdvSendAdvert on;
|
|
prefix 2001:db8::/64
|
|
{
|
|
AdvOnLink off;
|
|
AdvAutonomous on;
|
|
AdvRouterAddr on;
|
|
};
|
|
};
|
|
|
|
Next, start RADVD daemon:
|
|
|
|
# Set IPv6 forwarding (must be present).
|
|
sudo echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
|
|
# Run radvd daemon.
|
|
sudo service radvd restart
|
|
|
|
If successfull then all devices connected to the host will receive
|
|
a routable `2001:db8` prefix.
|
|
|
|
This can be verified by sending echo request to the full address:
|
|
|
|
ping6 -I bt0 2001:db8::2aa:bbff:fexx:yyzz
|
|
|
|
where `aa:bbff:fexx:yyzz` is device Bluetooth address.
|
|
|
|
If you'd like to learn more about the procedure please refer to
|
|
[Distributing a global IPv6 prefix].
|
|
|
|
* [Connecting devices to the router]: http://developer.nordicsemi.com/nRF5_IoT_SDK/doc/0.9.0/html/a00089.html
|
|
* [Distributing a global IPv6 prefix]: http://developer.nordicsemi.com/nRF5_IoT_SDK/doc/0.9.0/html/a00090.html |