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Questions tagged [802.15.4]

IEEE 802.15.4 standard

IEEE 802.15.4 is a standard which specifies the physical layer and media access control for low-rate wireless personal area networks (LR-WPANs) using Sub-1 GHz frequency bands. It is maintained by the IEEE 802.15 working group, which has defined it in 2003. It is the basis for the ZigBee, ISA100.11a, WirelessHART, and MiWi specifications, each of which further extends the standard by developing the upper layers which are not defined in IEEE 802.15.4.

Alternatively, it can be used with 6LoWPAN and standard Internet protocols to build a wireless embedded Internet.

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What are the correct frame control bytes in IEEE 802.15.4 standard data frame encoding for using 32 bit addressing?

I am trying to implement a UWB ranging system using IEEE 802.15.4 standard data frame encoding, but the example I found only uses 16-bit addressing with a frame control byte of 0x8841, like this: tx_poll_msg[] = {0x41, 0x88, 0, 0xCA, 0xDE, 'W', 'A',…
Spencer Brennessel
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Question about sentence in application note: "incremented modulo-256". Request explanation and clarification

Context: I am reading an application note for a UWB transceiver. In it they are describing the typical message frame format, in accordance with IEEE rules. There is some wording that is confusing me and I am unsure whether I need to implement…
BitShift
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802.15.4 - how are the baseband and RF signals related?

The 802.15.4 standard says: "In the 2450 MHz, 915 MHz, and 868 MHz bands, the half-sine pulse shape is used to represent each baseband chip and is given by: $$ p(t) = sin ( π \frac{t}{2T_c}) \quad{for}\ \ 0 ≤ t ≤ 2 Tc $$ According to the figures in…
kfx
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Resetting a peripheral very often : potential long-term consequences?

Short version: I have a MRF24J40MD on a PCB which could require resets every 20 seconds. Is it fine to reinitialize peripherals very often (trigger reset pin then registers initialization)? What could be long-term consequences? Long version: I'm…
Carton_
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Does anyone know the part number of this 900MHz LNA/PA front end IC?

Please see attached image. This IC is found on a 900MHz 802.15.4 wireless module, presumably working as LNA+PA, QFN16(?,not sure upon further inspection) package, with the following markings: 7 130 23 02 DGSO (might be D650 as suggested by Joshua…
Zhiyong Li
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Feedback on 2.4GHz RF circuit design

Looking for some feedback on this RF feedline and antenna area. Starting from the MCU pins, we have: Murata RF connector with integrated switch (MM81302600) - for inserting the VNA and tuning the PI network PI network Extra in-series 0402 footprint…
Alex
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How to determine best wireless technology for my application

I'm trying to help a buddy research implementing some form of wireless communication between a dozen or so self-contained sensors to collect data placed outside around a small area (less than 20ft between nodes) and send that data off to a central…
user3953989
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AVR + IEEE 802.15.4 (<1GHz) potential transceivers

I'd appreciate it if someone could offer a couple of suggestions about pairing up an AVR MCU (I'm thinking about using the MEGA162V-8PU ) to a general ISM < 1GHz (transceiver), and the ATTINY85 on the other end (with another transmitter). …
Nactus
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Can NRF24L01 use IEEE 802.15.4 and 6LoWPAN protocol?

I'm new to embedded systems and wireless sensor networks. I want to make a wireless sensor network which is based on 6LoWPAN protocol for monitoring application. As stated on Wikipedia, 6LoWPAN runs over IEEE 802.15.4 protocol. What I want to know…
adikabintang
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Can you implement WLAN on a ZigBee chip?

I've spent my afternoon browsing around the web looking for a microcontroller that has integrated WLAN (802.11), but I haven't managed to find any on the market. There are lots of cheap microcontrollers on the market that work in the 2.4 GHz band…
Venemo
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