EMIDE Application Development Kit --- USER MANUAL
Contents
1. decouple the user application from the WSN system the mid layer software EMIDE is developed Currently EMIDE can support the development of the multitasking pre linked machine code applications act as a bridge between the application space and the system space and is efficient in both the memory consumption and the energy cost IHI About the EMIDE Kit With the EMIDE the WSN application is decoupled from the WSN system and can be built independently In order to provide a user friendly EMIDE application development environment to the WSN users the Ist version EMIDE application development kit EMIDE Kit 1s distributed Thanks to the EMIDE Kit the users can program the WSN application easily by the C language and reprogram the new application image to the WSN nodes simply by updating only a minor size code commonly 100 300 bytes the updating can be completed quickly within tens of seconds and less energy will be consumed during the reprogramming process IV The WSN network established by the iLive The network established by the iLive nodes follows the IEEE802 15 4 ZigBee specification 1 In this network two kinds of nodes exist the coordinator and the end devices The coordinator 1s responsible for the new network establishment the devices associations as well as the communications with the external network The end devices are in charge of collecting the sensor data and transmitting the data packets to the Coordinat2. EMIDE Application Development Kit USER MANUAL Liu Xing SMIR team LIMOS UMR 6158 CNRS University Blaise Pascal Clermont Ferrand Version 1 June 2013 EMIDE Application Development Kit version 1 June 2013 Page 1 Summary I Introduction to the iLive Platform 3 II Background of the mid layer software EMIDE 3 III About the EMIDE Kit 4 IV The WSN network established by the iLive 4 V Demo Projects in the EMIDE Kit 5 VI Application Image Size 5 VII Contact and feedback 6 EMIDE Application Development Kit version 1 June 2013 Page 2 I Introduction to the iLive Platform iLive is a wireless sensor network platform dedicated to the environmental data collection applications It is developed by the SMIR team of LIMOS UMR 6158 CNRS laboratory iLive node 1s depicted in the Figure 1 Its key features are as follows e Low energy consumption e g 45 mA in active mode and 5 6 uA in sleep mode e Powered by two AA standard batteries 1 5 V An iLive node equipped with 4 Watermark sensors and sampling once per day can have a lifetime of 5 years e Dimension 76mmx40mm e 4 Watermark sensors e 3 Decagon sensors e temperature sensor e 1 air humidity sensor e 1 light sensor e 1 RS232 USB slave port e ZigBee IEEE802 15 4 wireless access medium Figure 1 iLive WSN Node II Background of the mid layer software EMIDE Programming and reprogramming are two important processes for applicati
3. ctory an executable binary EMIDE exe exists This binary can be executed by just clicking it After executed the application program named the app _coordinator c or the app enddevice c will be processed be built be pre linked etc and then a final executable application image will be generated named wsn_app bin This image will then be reprogrammed to the WSN nodes through the wireless To run the EMIDE exe the AVR GNU compiler needs to be installed and it can be downloaded from the website http winavr sourceforge net Receiver Receiver 7 Receiver Figure 3 Measurement of the packet lost rate in the WSN response Receiver response broadcast Receiver Receiver VI Application Image Size The application sizes of the EMIDE applications in these projects are shown in the Table 1 From this table it can be seen that the code size of the WSN application becomes smaller after EIMDE is applied Thus the WSN reprogramming performance can be improved greatly e g only 2 to 3 ZigBee packets need to be transmitted during the reprogramming process this process will be short in the time cost and low in the energy cost EMIDE Application Development Kit version 1 June 2013 Page 5 Final Wireless transmission Projects Directory Node type Source program executable frames during the image size pramming process og PLR project Table 1 Reprogramming sizes of th
4. e EMIDE applications VII Contact and feedback Any question or suggestion will be welcome to the email liu isima fr Xing Liu June the 16 2013 Clermont Ferrand France EMIDE Application Development Kit version 1 June 2013 Page 6
5. on development in WSN Currently these processes are difficult for the WSN users On one hand the hardware platforms in the WSN are diverse thus the users need to understand the diverse low level hardware details for the application programming On the other hand most WSN nodes are prone to be deployed in the harsh environments where humans cannot access thus the WSN reprogramming needs to be done remotely through the wireless Yet the wireless transmission in the WSN is high in the energy consumption and limited in the communication bandwidth Consequently the WSN reprogramming process becomes complicated One way to address the challenges above is to decouple the application from the low level system and provide a set of services in the system space for the application programming By this way two separated images will be generated the application image and the system image The system image can be built by the WSN experts and pre burned to the WSN nodes And EMIDE Application Development Kit version 1 June 2013 Page 3 then the WSN users only need to focus in the application space and upload the application image to the target nodes when necessary By this means the application programming can be simplified as the users no more need to understand the low level system details Moreover the reprogramming performance can be improved as only the application image other than the monolithic software image 1s needed to be updated To
6. or All the WSN nodes can be controlled remotely from Internet by the user terminal devices such as laptop PDA mobile phone etc depicted in Figure 2 Internet Wireless Sensor Network p ee EndD evice l A ol S EndDevice 7 7 x World Wide an Web Server if EndDevice Mobile Phone Figure 2 Sensor Network established by the iLive nodes EMIDE Application Development Kit version 1 June 2013 Page 4 V Demo Projects in the EMIDE Kit After a WSN network is established it 1s essential to evaluate the network packet loss rate PLR and the throughput In the EMIDE Kit two application projects are provided to evaluate these performances These projects locate under the directory EMIDE Kit projects and are named as the pkt lost rate test and the throughput test respectively The PLR project is implemented as follows the coordinator node acts as the sender and the end device nodes act as the receivers Periodically the sender broadcasts a wireless packet After the receivers receive this packet they will send back a packet simultaneously to the sender Figure 3 According to the number of the receiver nodes Nsend and the number of the sender received packets Nrcv the PLR can be calculated PLR Nrcv Nsend Two directories exist in the PLR project one is for the coordinator node and the other is for the end device nodes In each dire
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