Worldsens : Development and Prototyping Tools for Application Specific Wireless Sensors Networks

Transcription

1 Worldsens : Development and Prototyping Tools for Application Specific Wireless Sensors Networks Guillaume Chelius Éric Fleury Antoine Fraboulet CITI Laboratory INSA Lyon INRIA ARES Project Wasp IST A. Fraboulet, WASP IST , Lille Meeting 1

2 Worldsens : Application Specific Design Flow Application Specifications and Constraints Hardware Platform WSNet simulation High Level Design Implementation Choices Distributed Simulation WSim + WSNet Distributed application protocols Software Specification Application Network protocol Operating System Software Implementation Cross compiler tools Target binary ready for deployment High Level Design of Distributed Application Design Implementation Choices Performance Evaluation and System Validation A. Fraboulet, WASP IST , Lille Meeting 2

3 Worldsens : Design Tools WSim : hardware platform simulation Temporal simulation Complete hardware platform simulator Peripheral management Handles target application binary code WSNet : wireless network simulation Classical event-driven simulator Physical layer & radio medium consideration UDP/IP frontend WSNet + WSim : complete distributed system simulation A. Fraboulet, WASP IST , Lille Meeting 3

4 WSim platform simulator Software oriented simulator Models characteristics Instruction precise (asm) Models the complete platform (CPU + peripherals) Has a reduced complexity for simpler construction and faster usage. Features Can interact with external tools and simulators. Fully instrumented for Debug Performance estimation Energy consomption analysis A. Fraboulet, WASP IST , Lille Meeting 4

5 WSim Simulation/Execution Loop Instruction Execution Internal Periphs Configuration and I/O Clock system Time evaluation Internal Periphs Update Plateform libselect() Write MCU > Dev Read MCU < Dev Update Dev update GUI IRQ Evaluation A. Fraboulet, WASP IST , Lille Meeting 5

6 WSim Simulation/Execution Loop Instruction Execution Internal Periphs Configuration and I/O cycles Clock system Time evaluation Internal Periphs Update Plateform libselect() Write MCU > Dev Read MCU < Dev Update Dev update GUI LPM IRQ Evaluation A. Fraboulet, WASP IST , Lille Meeting 5

7 WSim Simulation/Execution Loop Instruction Execution Internal Periphs Configuration and I/O cycles Clock system Time evaluation Internal Periphs Update Plateform libselect() Write MCU > Dev Read MCU < Dev Update Dev update no yes LPM GUI IRQ Evaluation A. Fraboulet, WASP IST , Lille Meeting 5

8 WSim Simulation/Execution Loop Instruction Execution Internal Periphs Configuration and I/O cycles Clock system Time evaluation Internal Periphs Update no yes LPM Plateform libselect() Write MCU > Dev Read MCU < Dev Update Dev update GUI IRQ Evaluation WSNet external events A. Fraboulet, WASP IST , Lille Meeting 5

9 Instruction Precise Simulation CC1100 States IRQ Precise reports Interrupts Power Modes Communications Node activity Simultaneous events Off-line analysis Performance Evaluation Leds Code performance Memory footprint Power consumption A. Fraboulet, WASP IST , Lille Meeting 6

10 Frequency Scaling 4e e+06 3e e+06 2e e+06 1e time (ms) 5e e+06 4e e+06 3e e+06 2e e+06 1e+06 TinyOS 2.x MantisOS Clock modules simulation Variable Frequencies Nodes clock skew and drift Energy estimation Clocking System Simulation nanosecondes MCLK LFXT1 ACLK 32768Hz time (ms) DCOCLK XT2 paramétrée ACLKn SMCLK A. Fraboulet, WASP IST , Lille Meeting 7

11 Target Code Debug A. Fraboulet, WASP IST , Lille Meeting 8

12 Performance Evaluation : Source Code Annotation A. Fraboulet, WASP IST , Lille Meeting 9

13 Hybrid simulation Clock 16bits CPU MSP430 Flash 16 RAM bits SPI 00 8 bits peripherals SPI 01 1wire CC1100 Radio Module External Serial Serial Id 1MB Flash Memory interface Node simulator WSim UDP/IP network packets events Radio simulator WSNet A. Fraboulet, WASP IST , Lille Meeting 10

14 Hybrid simulation Clock 16bits CPU MSP430 Flash 16 RAM bits SPI 00 8 bits peripherals SPI 01 1wire CC1100 Radio Module External Serial Serial Id 1MB Flash Memory interface Node simulator WSim Node simulator WSim UDP/IP network packets events Radio simulator WSNet Node simulator WSim Node simulator WSim A. Fraboulet, WASP IST , Lille Meeting 10

15 Hybrid simulation GCC cross compiler toolchain Application binary file Clock 16bits CPU MSP430 Flash 16 RAM bits SPI 00 8 bits peripherals SPI 01 1wire CC1100 Radio Module External Serial Serial Id 1MB Flash Memory interface GDB local/remote debugging TCP/IP GDB remote protocol Node simulator WSim Node simulator WSim Radio simulator Node simulator WSim Database storage Serial comm software base station serial link UDP/IP network packets events WSNet Node simulator WSim A. Fraboulet, WASP IST , Lille Meeting 10

16 Tutorial website http ://wsim.gforge.inria.fr/tutorials/wasp/ A. Fraboulet, WASP IST , Lille Meeting 11