Dragan Dan-Stefan - Master AAC

The Constrained Application Protocol (CoAP) is a web transfer protocol that is intended for use with reduced-capability, low-power devices. These nodes often have 8-bit microcontrollers with small amounts of ROM and RAM. CoAP provides a request/response interaction model between application endpoints, supports built-in discovery of services and resources, and includes key concepts of the Web such as URIs and Internet media types. This project uses an existing CoAP implementation over an IPv6 over Low power Wireless Personal Area Networks (6LoWPAN) stack and its main goal was porting the existent environment on Sparrow v4.

6LoWPAN is a networking technology or adaptation layer that allows IPv6 packets to be carried efficiently within small link layer frames. It has defined encapsulation and header compression mechanisms that allow IPv6 packets to be sent and received over IEEE 802.15.4 based networks.

= IPv6 network with a 6LoWPAN mesh network =

= Previous model of a 6LoWPAN mesh network =

= 6LoWPAN mesh network on Sparrow =

In order to set up a new Sparrow wireless sensor network using COAP the following instructions should be used:

* Request access to Dresden Elektronik 6LoWPAN stack repository[1]. * Install the next packages on your Linux machine: avr-libc, avrdude, binutils-avr, gcc-avr (example for Debian based systems)

sudo apt-get install avr-libc avrdude binutils-avr gcc-avr

* Clone the git repository

git clone https://gitlab.cs.pub.ro/dan.dragomir/dde-stack

* Switch to sparrow_support git branch

cd dde-stack/
git checkout sparrow_support

* [1] https://gitlab.cs.pub.ro/dan.dragomir/dde-stack