0 Introduction at present, the use of agricultural water-saving irrigation system imported from abroad has played a positive role in the improvement of irrigation level and water resource utilization rate, but due to the high system cost, incomplete parameter calibration, lack of relative high-level decision-making function, It is difficult to ensure the maintenance and updating of the system, and many problems restrict the use of agricultural water-saving irrigation system and large-sca
design is based on ZigBee Wireless Module technology, because ZigBee Digital Transmission Module Low power consumption, low cost, easy to network and maintenance, the use of cluster network at the same time will have a unique advantage of self-healing, can overcome the malpractice of network paralysis caused by accident. 1 Structure of the system The intelligent Home system designed in this p
Application Analysis of smart street lamp ZigBee technology
In the dark night, the street lights light up the way forward for everyone. When the night comes, the street lights are lit up. As there are more pedestrians on the road, the darker the sky, the brighter the street lights. When the night begins, when there are few pedestrians on the road, the street lights become darker, saving energy for urban lighting.
Figure 1: adjustable lighting
So how
New Wi-Fi standard HaLow challenges ZigBee and Z-Wave
Applicable to low-power transmission standards of Iot devices, including Bluetooth, ZigBee, Z-Wave, and Thread. Due to the rapid growth of the low-power wireless network communication market, common Wi-Fi standards for home and public hotspots are also released to compete for market cakes.
According to the rethinkresearch website, the Wi-Fi Alliance has
ZigBee can be divided into three basic levels: Physical layer/Data link layer, ZigBee stack layer and application layer
The basic functions of each layer are as follows: (1) Physical layer/Data Link layer: Physical layer and data transmission media, responsible for the transformation of physical media and bits, and the transformation of data bits and upper-layer data frames. The data link layer is responsib
Binding is a very important concept in ZigBee, presumably we have read a lot of articles, including "ZigBee four kinds of binding method in the Ti_z-stack protocol stack application" most typical, this article I also read several times, receiving quite abundant. In addition to the Feibit forum also has a post explaining the enddevicebinding of the pain of the transmission mechanism, analysis is also quite t
source endpoint callback function, and need to use the source endpoint simple descriptor in the configuration ID, the second parameter using the endpoint structure is not surprising.
Z-stack sends data by calling function void Sampleapp_sendflashmessage (UInt16 flashtime) in the application layer, where flash time is the data being sent, and this function is invoked in the application
afstatus_t af_datarequest (afaddrtype_t *dstaddr, endpointdesc_t *srcep,
UInt16 CID, UInt16 len, uint8 *buf
The ZigBee protocol is a global open standard to provide low-power wireless connections for many applications with test and control functions. ZigBee enhances the functions of 802.15.4 with flexible and scalable network topology, easy-to-install comprehensive settings, smart routing technology, and anti-DDoS capability. ZigBee also has strict security measures an
ZigBee technology is currently in the field of IoT and RFID, with a very high degree of concern. Recently, the CAS Shanghai Institute of Micro-Systems and information technology, Wuxi Internet industry and other sensor Network standards team member units jointly released the name of VW628, WSNS1_SCBR two China's independent intellectual property rights of the wireless sensor network SOC chip, which wsns1_ SCBR is China's first IEEE802.15.4G-compliant
ZigBee Technology-Texas Instruments Online Support community Click on the Open link
1. The ZigBee terminal sleep device, which can support AC and DC two kinds of power supply, how to maintain the low power sleep characteristics in DC and improve the real-time of data communication when AC power is supplied.
The device switches the power supply through a switch switch, each time the device reads the switch s
Document directory
(1) create a workspace and a project
(2) Configure general options
(3) linker settings
(4) debugger settings:
(1) create a program file
(2) Introduce header files
(3) define led pins
(4) Main Function
(5) code Overview
I. Connecting
In the previous article "ZigBee journey (1): setting up the ground", we briefly introduced Zigbee and the establishment of its development enviro
In the impression, ZigBee is mainly used in industry, while Bluetooth is used in life. Some consumer products use Bluetooth, such as mobile phones, laptops, wireless mouse, and so on.
The assignment assigned by the teacher is based on the sensor network, and he thinks that the ZigBee technology should be used in the sensor network. Many sensors are used in sensor networks. If wired data is used for data tr
1. Linux-ZigBee Kernel
Git clone git: // linux-zigbee.git.sourceforge.net/gitroot/linux-zigbee/kernel
2. user tools
2.1 get the user tools
Git clone git: // linux-zigbee.git.sourceforge.net/gitroot/linux-zigbee/linux-zigbee
2.2 cross compile the user tools
Using the arm-None-Linux-gnueabi-Tool chain
./Autogen. Sh --
I. PrefaceAfter the last study, I believe that we have initially learned to use the ZigBee protocol to send and receive data. Today, we're going to experiment with keystrokes and learn how to implement key interrupts in the protocol stack.Two. Experimental functionOn the protocol stack to implement the key interrupt, BUT1 Press, LED1 flashing two times.Three. Code explanationWe also remember that the previous done the button experiment is how to confi
ZigBee node only the terminal device type can set the sleep mode, to set the sleep mode, on the configuration first to ensure that:
The drfd_rcvc_always_on in the 1.f8wconfig.cfg file is defined as false;
/****************************************
* The following is for End Devices only
************************** /
-drfd_rcvc_always_on=false
2. Pre-compiling power_saving in the IAR engineering options->c/c++compiler->preprocessor->defined symbols;
Research on Controllable networking methods based on ZigBee Wireless Networks (1)
ZigBee wireless network application nodes mostly use self-networking to access the network, which may cause excessive consumption of some nodes in the network. In this case, a controllable networking mode is proposed. By selecting and controlling the parent node of a node to access the network, the topology and Node Distribut
to get every character received. When this character is not '@', it indicates that the input is not complete. Add the character to the character array recv_buf. When this character is exactly, this indicates that the input is complete. Therefore, every character in recv_buf is sent to the PC in order and recv_count is reset.(5) Experiment Results
First, complete the hardware connection and open the serial port debugging tool. The configuration parameters are as follows:
Click "open serial port
Small projects are really tiring. It seems very simple in principle. The underlying equipment transmits data through Zigbee, and the upper layer equipment uses DTU for data communication.
However, there is a problem: DTU is a single transmission. When the upper-layer device performs command control, if the underlying device uploads data, the control command will fail, you must strictly control the data upload time and command processing time.
The un
as an Internet of things professional students, feel not to learn these things connected to the knowledge of the Internet can not afford their own, well, learning to start!!! The CC2530 has 21 digital input/output pins, namely p01-p07, P10-P17, P20-P24. In particular, it is important to note that the input and output of the CC2530 pin is different from the 51 single chip microcomputer, look at the comparison of the picture.Well, this has a basic understanding of our own
Keygen first to choose:Why?Before said CC2530 is to support ZigBee protocol wireless chip, in fact, it is this hardware has a support ZigBee protocol Radio Road, not only the circuit, but also a CPU circuit, it is 8051cpu. Then all these circuits are packaged together, called cc2530 chips.Then select GetID, copy the license number below, and copy the key from the back to the corresponding place.Create a pro
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.