Enhancing real time capabilities of nano rk for telosb platform
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ENHANCING REAL TIME CAPABILITIES OF NANO-RK FOR TELOSB PLATFORM. Devendra Modium Krishna Priya Kolla. Problem Statement. Radio Stack and Sensors are very important for functioning of any mote in a wireless sensor network.

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ENHANCING REAL TIME CAPABILITIES OF NANO-RK FOR TELOSB PLATFORM

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Enhancing real time capabilities of nano rk for telosb platform

ENHANCING REAL TIME CAPABILITIES OF NANO-RK FORTELOSB PLATFORM

DevendraModium

Krishna PriyaKolla


Problem statement

Problem Statement

  • Radio Stack and Sensors are very important for functioning of any mote in a wireless sensor network.

  • Nano RK doesn’t support radio stack and other sensor functionality for TelosB platform

  • Goal : To enhance Nano RK to provide support for radio transceiver, temperature sensorand light sensor along with power saving mode


Cc2420 radio implementation

CC2420 Radio Implementation

  • Telos Rev. B platform has chipcon CC2420 (radio transceiver)

  • Base Nano RK has the higher level API to send and receive packets

  • CC2420 is configured using I/O pins and SPI bus.

  • USART0 module is used in SPI mode to communicate with CC2420

  • Testcase from HW1 is used to test Radio Stack


Sensors implementation

Sensors Implementation

  • Telos Rev. B platform has SHT11 sensor for temperature and Hamamatsu S1087, S1087-01 photo diodes to sense light

  • Relevant pins of MCU are configured appropriately to make the Sensors work correctly.

  • Data sheets and MantisOS are referred for implementation

  • Incorporated the sensor functionality in NanoRK general device driver model

  • Testcase from HW1 is used to test Light Sensor


Power saving mode

Power Saving Mode

  • Telos Rev. B platform has five different power saving modes

  • LPM3 mode which has CPU off , MCLK off, SMCLK off, DCO off, ACLK on is used for power saving(sleep) mode

  • Testing is done using LEDs to track the entering and exiting of Low power mode


Questions

Questions ??


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