SunSPOT

SUN SPOT (Small Programmable Object Technology) est une technologie de noeuds de réseaux de capteurs sans fil programmables en Java.

Caractéristiques Matérielles

vesion 1

• 180 Mhz 32-bit ARM920T core, 512K pSRAM/4M FlashRAM
• ChipCon 2420 radio 2.4 GHz IEEE 802.15.4
• USB interface
• 3.7V rechargeable 750 mAh prismatic lithium ion battery
• 40 uA deep sleep mode, 40 mA to 100+ mA
• 64 mm x 38 mm
• Double sided connector for stackable boards

Sensors and Actuators

• 8 tri-color LEDs
• 3D accelerometer
• 5 general purpose I/O pins
• 4 hi current output pins
• 1 A/D converter
• Temperature sensor
• Light sensor

vesion 2 (october 2010)

from http://sunspotworld.com/docs/Yellow/eSPOT8ds.pdf

• 400 MHz ARM 926ej-S Processor AT91SAM9G20
• 8Mbytes Flash Memory (4M x 16)
• 1Mbytes SRAM Memory (512K x 16)
• 802.15.4 Radio Transceiver (CC2420)
• USB 2.0 Full Speed
• 770mAhr Li-Ion Rechargeable Battery

Network

1. Réseau complémentaire - CTP, Ipv6/LowPan
2. Mise en réseau maillée - AODV, LQRP
3. Sauts multiples sur la programmation air
4. Sécurisé - Cryptographie à clé publique ECC de haut niveau

Sensors and Actuators (eDemo board from http://sunspotworld.com/docs/Yellow/edemo8ds.pdf)

Squawk JVM and Runtime

• Motivations : Memory constrained devices
• Fully capable J2ME-level Java VM with OS functionality
• Features
  • No operating system : Runs on the bare metal on ARM
  • Device driver are written in Java
  • Isolate application model (sub/super set of JSR121)
  • Inter-isolate communication
  • Provides lower-level asynchronous message delivery
  • Memory footprint : 80K for the VM, 270K for the Runtime

Liens

• http://www.sunspotworld.com/
• Squawk http://research.sun.com/projects/squawk
• Download SunSPOT Manager