mirror of
https://github.com/oliverschmidt/contiki.git
synced 2024-12-23 16:29:34 +00:00
83 lines
2.6 KiB
Plaintext
83 lines
2.6 KiB
Plaintext
|
This directory contains the compiled code for the Contiki energy
|
||
|
|
estimation demonstration for ACM SenSys 2007. More information is
|
||
|
|
available in the handouts/ directory and at the Contiki website:
|
||
|
|
|
||
|
|
http://www.sics.se/contiki/
|
||
|
|
|
||
|
|
* INSTALLATION
|
||
|
|
|
||
|
|
Cygwin and Java (JRE) needs to be installed. The demo has been tested
|
||
|
|
on Microsoft Windows, but probably works under Linux too.
|
||
|
|
|
||
|
|
You need between two and eight Tmote Sky boards to run the demo: one
|
||
|
|
sink and between one and seven nodes. The nodes are numbered from 42
|
||
|
|
to 48, and 41 is the sink node.
|
||
|
|
|
||
|
|
Step 1: Unpack the zip file
|
||
|
|
|
||
|
|
unzip contiki-energest-demo.zip
|
||
|
|
|
||
|
|
Step 2: Change directory to the demo directory
|
||
|
|
|
||
|
|
cd contiki-energest-demo
|
||
|
|
|
||
|
|
Step 3: Connect the sink node to the PC. Remove all other Tmote Sky
|
||
|
|
nodes from the PC.
|
||
|
|
|
||
|
|
Step 4: Upload Contiki to the sink:
|
||
|
|
|
||
|
|
make upload-sink
|
||
|
|
|
||
|
|
Step 5: Remove the sink node from the PC.
|
||
|
|
|
||
|
|
Step 6: Connect one of the non-sink nodes to the PC
|
||
|
|
|
||
|
|
Step 7: Upload Contiki to the node:
|
||
|
|
|
||
|
|
make upload-node-42
|
||
|
|
|
||
|
|
Step 8: Remove the Tmote Sky from the PC.
|
||
|
|
|
||
|
|
Step 9: Insert batteries into the Tmote Sky. The red LED should light
|
||
|
|
up.
|
||
|
|
|
||
|
|
Step 10: Repeat step 6 to step 9 for all non-sink nodes. Replace "make
|
||
|
|
upload-node-42" with "make upload-node-43", "make
|
||
|
|
upload-node-44", and so on.
|
||
|
|
|
||
|
|
Step 11: Insert the sink node to the PC
|
||
|
|
|
||
|
|
Step 12: Run the Java program:
|
||
|
|
|
||
|
|
make rundemo
|
||
|
|
|
||
|
|
NOTE: this uses the first Tmote Sky it finds as a
|
||
|
|
sink. Therefore, make sure that only one Tmote Sky (the sink) is
|
||
|
|
inserted.
|
||
|
|
|
||
|
|
* DEMO DESCRIPTION
|
||
|
|
|
||
|
|
Contiki continuously estimates the energy consumption of the
|
||
|
|
system. In this demonstration, seven Tmote Sky nodes, running Contiki,
|
||
|
|
estimates their energy consumption and send their power to a sink
|
||
|
|
node. The sink node is connected to the PC, and reports the nodes'
|
||
|
|
power to a Java program. The Java program shows the nodes' power
|
||
|
|
consumption for the last second.
|
||
|
|
|
||
|
|
When pushing the button on the nodes, they cycle through seven states
|
||
|
|
as below. This is reflected by their power consumption, as shown in
|
||
|
|
the Java program. The different states are:
|
||
|
|
|
||
|
|
* Red LED: sending one packet per second
|
||
|
|
* Green LED: radio listen 1% duty cycle
|
||
|
|
* Green, red LEDs: radio listen 10% duty cycle
|
||
|
|
* Blue LED: radio listen 100%
|
||
|
|
* Blue, red LEDs: radio listen 10%, CPU low-power mode disabled
|
||
|
|
* Blue, green LEDs: sending data 1.2 kilobytes/second
|
||
|
|
* Blue, green, red LEDs: sending data 12 kilobytes/second
|
||
|
|
|
||
|
|
When sending data, the radio is turned on for a while before the
|
||
|
|
transmission to check if it is possible to send the packet. This is
|
||
|
|
the reason why energy is spent on radio listening even when the nodes
|
||
|
|
are only sending data.
|