Low Power RF & Wireless Connectivity

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Low Power RF & Wireless Connectivity

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  • Wiki Page: DN202 Choosing Optimal ZigBee Stack TX Power

    Glenn B
    When designing wireless systems it is important to choose and set the values for the transmit power (TX) with care. Using a very high transmit power will result in longer range, but will also generate more interference with other devices in radio range. For a simple point to point application that targets...
    on Feb 24, 2012

  • Wiki Page: DN201 Using the Direct Join Request Feature in Z-Stack

    Glenn B
    In a typical Zigbee network, devices will automatically join the network and pick the best parent to join. The device will join as high up the tree as possible and will join the parent that has the highest LQI. In some applications, a more controlled topology may be required. The NLME direct join request...
    on Feb 24, 2012

  • Wiki Page: DN200 Using Constants in Code with Z-stack

    Glenn B
    The data model used for all Z-Stack projects, by default, copies constants into XDATA (RAM) during initialization. This reduces the amount of RAM that is available for application purposes. For most applications, this does not present a problem. Most constants used in Z-Stack are located in XDATA and...
    on Feb 24, 2012

  • Wiki Page: Permit Joining Association (Z-Stack, ZigBee)

    Kjetil
    Q: FAQ: Permit Joining Association (Z-Stack, ZigBee) Turning Permit Joining on / off and Beacon Request response when Permit Joining is turned off. The NLME_PermitJoiningRequest() API is provided as a hook into the network layer that allows the application to control whether or not a Router...
    on Nov 22, 2010

  • Wiki Page: How to configure the IAR EW 8051 to generate a hex file for CC2530 using Z-Stack? (plus link for CC2430/CC2431)

    Kjetil
    Q: FAQ: How to configure the IAR EW 8051 to generate a hex file for CC2530 using Z-Stack? (plus link for CC2430/CC2431) by 543672 The following steps describe how to configure the IAR EW 8051 to generate a hex file for CC2530 when using the banked code model for the Z-Stack by using the Z-stack project...
    on Nov 22, 2010

  • Wiki Page: Polling at long intervals (Z-Stack, ZigBee)

    Kjetil
    Q: FAQ: Polling at long intervals (Z-Stack, ZigBee) Setting polling intervals longer than what is provided using the timer in 16 bit mode. If you would like to poll at a rate of more than the approximately 1/minute configuration using the 16 bit MAC timer, you can try one of two things. The...
    on Nov 22, 2010

  • Wiki Page: PAN ID assignment (Z-Stack, ZigBee)

    Kjetil
    Q: FAQ: PAN ID assignment (Z-Stack, ZigBee) As long as each coordinator has a unique IEEE address, the PAN ID assignment will also be unique. The Z-stack is using the least two-significant bytes in the IEEE address to automatically assign the PAN ID (provided it is set to 0xFFFF in ZDApp.h).
    on Nov 22, 2010

  • Wiki Page: Over the Air Download (Z-Stack, ZigBee, TIMAC)

    Kjetil
    Q: FAQ: Over the Air Download (Z-Stack, ZigBee, TIMAC) Z-stack and TIMAC support for Over the Air download. Z-stack supports Over the Air firmware upgrade for CC2430 devices. The CC2430 needs external memory to support this. An own PC application for Over the Air Download (OAD) called Z-OAD is...
    on Nov 22, 2010

  • Wiki Page: Data structures stored in NV_RAM (Z-Stack, ZigBee)

    Kjetil
    Q: FAQ: Data structures stored in NV_RAM (Z-Stack, ZigBee) NV or Non-Volatile RAM utilizes FLASH on the CC2430 to maintain persistent state in the case that a device loses power and needs to retain state upon being powered back up. The data saved include parameters like the PAN_ID, Channel, ...
    on Nov 22, 2010

  • Wiki Page: Network topologies supported by Z-Stack (ZigBee)

    Kjetil
    Q: FAQ: Network topologies supported by Z-Stack (ZigBee) Z-Stack currently supports star and mesh topology for non-beaconed networks.
    on Nov 22, 2010

  • Wiki Page: Mobile Device (Z-Stack, ZigBee)

    Kjetil
    Q: FAQ: Mobile Device (Z-Stack, ZigBee) Z-stack support for mobile battery powered end device that will move around the network and potentially change its parents along the way. In ZigBee 2006, and correspondingly the Z-Stack 1.4.0 release, we added a feature that automatically triggers an...
    on Nov 22, 2010

  • Wiki Page: MCU platforms supported by the TIMAC and ZigBee Z-StackTM software

    Kjetil
    Q: FAQ: MCU platforms supported by the TIMAC and ZigBee Z-StackTM software The recent releases of TIMAC (beginning with v1.0.1) supports TI MSP430, CC2430 and CC2431 (with 8051 MCU core) platforms. The recent releases of the Z-Stack (beginning with v1.4.0) supports Atmel AVR, CC2430 and CC2431 (with...
    on Nov 22, 2010

  • Wiki Page: Max Payload (Z-Stack, ZigBee)

    Kjetil
    Q: FAQ: Max Payload (Z-Stack, ZigBee) How to determine the maximum size of payload data when sending a message from the application. You can retrieve the maximum payload size by making a call to the application framework. For example the call would be MaxDataLength = afDataReqMTU( &mtu...
    on Nov 22, 2010

  • Wiki Page: Manufacture ID Join Filter (Z-Stack, ZigBee)

    Kjetil
    Q: FAQ: Manufacture ID Join Filter (Z-Stack, ZigBee) Using the Manufacture ID to control/filter who joins a network . You cannot use the manufacturing ID during the joining process to control whom is allowed to join the network because the only way to get this information is to request the...
    on Nov 22, 2010

  • Wiki Page: Managed Scan (Z-Stack, ZigBee)

    Kjetil
    Q: FAQ: Managed Scan (Z-Stack, ZigBee) MANAGED_SCAN compile option explained . The MANAGED_SCAN compile option puts a time delay between each scan. If more than one channel is going to be scanned, the time delay is between each channel, and the MAC only gets one channel at a time to scan. The...
    on Nov 22, 2010

  • Wiki Page: Information about ZigBee and the IEEE 802.15.4 standards

    Kjetil
    Q: FAQ: Information about ZigBee and the IEEE 802.15.4 standards The latest ZigBee spec can be downloaded from the ZigBee web site: http://www.zigbee.org/en/spec_download/download_request.asp The IEEE 802.15.4 standard, which defines the PHY and the MAC layer, is available for download at: http:/...
    on Nov 22, 2010

  • Wiki Page: Indirect messaging (Z-Stack, TIMAC, ZigBee)

    Kjetil
    Q: FAQ: Indirect messaging (Z-Stack, TIMAC, ZigBee) Parent routers storing data for sleeping End Devices. Using indirect messaging between a Router and an associated End Device, the parent stores the packet for the sleeping end device for a duration based on the NIB attribute TransactionPersistenceTime...
    on Nov 22, 2010

  • Wiki Page: Forcing a coordinator to establish a network (Z-Stack, ZigBee, TIMAC)

    Kjetil
    Q: FAQ: Forcing a coordinator to establish a network (Z-Stack, ZigBee, TIMAC) How to force a coordinator to establish network regardless of the channel condition By increasing MAX_SCAN_ENERGY the coordinator will be more tolerant towards interference when scanning the channels.
    on Nov 22, 2010

  • Wiki Page: Copyright (c) for Z-stack and TIMAC

    Kjetil
    Q: FAQ: Copyright (c) for Z-stack and TIMAC The code pages of Z-stack and TIMAC has headers that state this: Copyright (c) 2007 by Texas Instruments, Inc. All Rights Reserved. Permission to use, reproduce, copy, prepare derivative works, modify, distribute, perform, display or sell this...
    on Nov 22, 2010

  • Wiki Page: Controlled joining in ZigBee (Z-Stack)

    Kjetil
    Q: FAQ: Controlled joining in ZigBee (Z-Stack) Joining networks when router/endpoint wakes up before the coordinator. If a Router / End Device wakes up before the Coordinator, the device will periodically go through a discovery phase where it searches for a network and attempts to join one...
    on Nov 22, 2010

  • Wiki Page: Compiler support for 8051 based System-on-Chip devices (SoC)

    Kjetil
    Q: FAQ: Compiler support for 8051 based System-on-Chip devices (SoC) 8051 based System-on-Chip (SoC) devices are supported by the EW8051 compiler from IAR ( www.iar.com ) An evaluation version of the compiler can be downloaded from: www.iar.com/p882/p882_eng.php The SoC device contains an on-chip...
    on Nov 22, 2010

  • Wiki Page: Commissioning (Z-Stack, ZigBee)

    Kjetil
    Q: FAQ: Commissioning (Z-Stack, ZigBee) Recommended method for provisioning a device when multiple PANs are operating in close range. If you know the PAN_ID of the network you would like to join, as well as the channel it will operate on, you can set the ZDAPP_CONFIG_PAN_ID parameter to a ...
    on Nov 22, 2010

  • Wiki Page: Changing channel in Z-Stack & TIMAC

    Kjetil
    Q: FAQ: Changing channel in Z-Stack & TIMAC The channel is changed the following way in Z-Stack: 1. Open the Z-Stack IAR EW project. 2. Open the Tools folder and the file "f8wConfig.cfg" 3. Change the bit map field DEFAULT_CHANLIST --------------------------------------------...
    on Nov 22, 2010

  • Wiki Page: Controlling the priority of interrupts in Z-stack (CC2430, CC2431, ZigBee)

    Kjetil
    Q: FAQ: Controlling the priority of interrupts in Z-stack (CC2430, CC2431, ZigBee In the 1.4.0 release and later release the RF interrupt priority group higher than the rest of the interrupts. The setting of this priority is done in mac_mcu.c. There is a function macMcuInit() where the IP0 and...
    on Nov 22, 2010

  • Wiki Page: Asymetric Links (Z-Stack, ZigBee)

    Kjetil
    Q: FAQ: Asymetric Links (Z-Stack, ZigBee) ZigBee-2006 AODV routing handles asymmetric links ZigBee should not have a problem dealing with asymmetric communication links, as the route establishment process used in AODV (Route Request / Route Reply) requires a handshake to establish a route and...
    on Nov 22, 2010
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