The post will briefly introduce what RF-WM-3220B1 WiFi module is, what features it has and where it is applied in. What is RF-WM-3220B1 WiFi module? RF-WM-3220B1 is a Wi-Fi IoT module built on basis of TI CC320SF IC, which is embedded with a Cortex-M4 MCU. It supports a variety of peripherals i.e. camera interface, I²S, SD/MMC, UART, SPI, I²C, ADC and GPIO. The module supports IEEE 802.11 b/g/n standards, and is able to work at Station, AP and Wi-Fi Direct modes. Antenna wise, it offers 3 options: ceramic antenna, IPEX base and antenna welding. RF-WM-3220B1 supports TCP/IP protocols and relevant applications. It can be widely applied in a big variety of IoT scenarios i.e. home automation, home appliance control, security systems, smart energy, internet gateway, industrial control, smart metering, wireless audio, wireless doorbell and sensor networking nodes etc. The module has two operation modes: AT Command Mode and Data Transparent Transmission Mode. With AT Command Mode, the developer can write a series of AT commands to route the transmission of the data. While in Data Transparent Transmission Mode, the modules automatically transmit the data by broadcasting the UDP packets with designated destinations. The developer or user does not have to instruct how the data transmission is routed in the latter mode. However, to switch between operation modes for the network or change the work mode of a module, the user has to use some simple AT commands to instruct the modules. Applications of RF-WM-3220B1 WiFi module Features of RF-WM-3220B1 WiFi module The module which works at Station mode can exchange data between any devices in the LAN, beside it can through a router to enter the internet, and communicate among remote devices. One module works at AP mode as TCP Server, and the other modules works at Station mode as TCP Client to communicate with it. Pin Assignment Package Size Module Thickness No. Parameter item Parameter details Description 1 Chip CC3220SF TI 2 Size 31*20mm - 3 Weight 5g - 4 Frequency Band 2402 MHz ～ 2480MHz   6 PCB 4-layer Impedance-matching, lead-free 7 Supply Voltage 2.3~3.6V DC The voltage higher than 3.6V is forbidden 8 Operation Range 100m Open area; +17dBm; 9 Max Power Max +17dBm 50mW 10 Power consumption Averge:1.AP Mode:74mA                                    2.STA mode Active:20mA                      3.STA Mode Always                                Connected(Long Sleep                          Intervals:400ms):1.5mA   4.STA Mode Hibernate:35uA 11 Communication interface IO See details in Pin definition 12 Antenna type PCB/IPEX 50Ω characteristic impedance/- 13 Operating temperature -40 ~ +85℃ Industrial-grade 14 Operating hum...

On November 14, 2019, Nordic announced the launch of the first member of the next-generation nRF53 series chip -- nRF5340 high-end multi-protocol system-level chip. The chip to build in the Nordic nRF51 and nRF52 multi-protocol series chips, and at the same time introduced a dual processor hardware architecture, with high performance and low power consumption, extensibility, high heat resistance advantages, can be widely used in smart home, indoor navigation, professional lighting, industrial automation, wearable devices, and other complex Internet applications. Based on the design of the Arm cor-M33 dual-core processor, the nRF5340 integrates high-performance application processors, programmable ultra-low power network processors, and security functions into a low-power multi-protocol SoC. At the same time, the chip also enhances dynamic multi-protocol support, and supports Bluetooth 5.1, low-power Bluetooth, Bluetooth Mesh, Thread, and Zigbee protocols. It can be configured or debugged by smart phones using low-power bluetooth, and interact with Mesh networks. The wireless transmitter is equipped with all Bluetooth 5.1 direction finding functions. The nRF5340 operates in a power supply voltage range of 1.7 to 5.5V, allowing rechargeable batteries and USB power. nRF5340 integrates a new power-optimized multi-protocol 2.4ghz radio with a transmitting current of 3.2ma (0dbm transmitting power, 3V, DC/DC) and a receiving current of 2.6ma (3V, DC/DC). The sleep current was as low as 1.1 A. The nRF5340 launched this time, the main processor Application processor is responsible for the calculation of complex functions and bluetooth protocol stack. It adopts the Arm architecture -m33 under the Arm architecture that has always been used by Nordic, and mounts DSP and floating point functions at the same time, which can be used for third-party development and Application. The kernel runs at up to 128 MHz, supports voltage and frequency regulation, and contains dedicated 1 MB of flash memory and 512 KB of RAM memory, which can meet the needs of the next generation of cutting-edge wearable devices and significantly improve performance over the previous generation of nRF52840. The sub-core Network processor can be used as the computation of additional and uncomplicated content, which also USES Arm corcor-m33, the kernel runs at 64 MHz (238 CoreMark), and is dedicated to 256 KB flash and 64 KB memory. The low power consumption and low duty cycle sensor acquisition during radio operation are optimized. Provides optimal implementation of the 2.4 GHz private protocol and ensures portability from the nRF51 and nRF52 series. The two processors can work independently of each other, connect directly through the IPC, or wake up to each other, but consider their respective protection Settings. In addition, the application processor also integrates security functions such as Arm cryptocell-312 security key storage, providing the highest level of security. It works by h...

ZigBee 3.0 is the only complete and interoperable Internet of things solution, which enables intelligent products to work together from mesh network layer to general language layer. Why ZigBee 3.0 ZigBee 3.0 gives users and developers more options. The standardization of the whole stack covers chips from multiple chip suppliers, ZigBee Pro network protocol stack, and ZigBee cluster Library in application layer, bringing confidence that products and services can work together. ZigBee 3.0 complete solution includes testing, certification, brand and marketing support, making the development and sales of interoperable products and solutions easier, releasing growth opportunities, and giving unlimited innovation possibilities for home, work and travel. RF-star provides the most advanced ZigBee 3.0 module in the industry. Users can use the ZigBee 3.0 module of RF-star for secondary development or in-depth cooperative development with RF-star. ZigBee 3.0 advantages Interoperability Certification procedures ensure interoperability between devices Multi vendor ecosystem uses the same application layer common language ZigBee 3.0 network can be used for devices using previous application layer standards ZigBee 3.0 equipment can also be added to the network using the previous application layer standards Different industries, same plan Home, architecture, industry, retail, health, etc Developers and users in different fields have the same choice to solve the problem of market fragmentation The same application layer can meet the requirements of the complete deployment scheme Convenient and easy to use All the required files are in one place The same certification mark shall be used on each certified product and package Stable and reliable Proven mesh network, eliminating the impact of single node failure, can be expanded to large-scale network Self healing and scalable, capable of supporting a network of hundreds of devices Global general Use 2.4 GHz frequency band to ensure that the product can be deployed globally free of frequency band license fee Practice verification · 2500 certified products and 300 million deployed products Green environmental protection Specially designed for energy capture devices and ultra-low power consumption devices ZigBee routers all have green power proxy function to provide mesh network support for energy capture devices Future guarantee Developed by more than 400 member companies who have been deeply involved in the Internet of things industry for many years and launched to the market Continuous innovation - in our ecosystem, there are not only industry giants, established enterprises, but also start-ups and new forces Complete test The integrated test and authentication program covers all layers of protocol stack: MAC / PHY, network stack protocol and application layer Examples of ZigBee Application Equipment

Project Name: Smart EV Charger                     Project Date: 2017                     Project Partner: State Grid Corporation of China and some Automobile manufactures The working principle of the smart EV charger is to exchange information such as charging data and charging instructions after establishing communication with the BLE module of the charger through the Bluetooth of the mobile phone. The biggest advantage of the BLE solution is that the charging pile does not need to be connected to the Internet. It also does not require complicated wiring. Also, the smart EV charger has strong flexibility and low construction cost. It effectively solves the transformation and upgrading of new/old residential areas or the decentralized laying of charging piles on the roadside. And it greatly improves the inconvenience operation of traditional charging. RF-star BLE module works as the most important part to transmit the data. The BLE solution assists charging pile manufacturers, operators, and commercial charging service providers to realize the intelligent, digital, and networked chargers.

IC card is another new information tool after magnetic card, which refers to integrated circuit card. Bus card is a kind of IC card. The common IC card uses RF technology to communicate with IC card reader. According to its structure, IC card can be divided into general memory card, encrypted memory card, CPU card and super smart card. 1. Memory card, whose embedded chip is equivalent to ordinary Serial EEPROM memory, has the advantages of convenient information storage, simple use, low price of IC card, and can replace magnetic card in many occasions. However, because it does not have the function of information security, it can only be used in applications with low security requirements. 2. The logic encryption card and the encryption memory card are embedded with chips, and the control logic is added outside the storage area. Before accessing the storage area, the password needs to be checked. Only the password is correct, can the access operation be carried out. This kind of information has good confidentiality. 3. CPU card, with chip embedded in the card, is equivalent to a special type of single-chip microcomputer, which has not only controller, memory, timing control logic, but also algorithm unit and operating system. Because CPU card has the characteristics of large storage capacity, strong processing capacity, information storage security and so on. It is widely used in the situation where information security requirements are particularly high. 4. Super smart card, which has MPU and memory, keyboard, LCD and power supply, is rare. IC card is divided into contact IC card and non-contact IC card according to the different interface of data exchange with the outside world. The contact IC card can read and write data after the contact of the IC card reading and writing device contacts with the contact of the IC card. The international standard ISO7816 has strict regulations on the mechanical and electrical characteristics of such cards. The contactless IC card has no circuit contact with the IC card equipment, but read and write through the contactless read and write technology, which successfully solves the problem of passive and contactless, and is a major breakthrough in the field of electronic devices. In addition to CPU, logic unit and memory unit, the embedded chip adds RF transceiver circuit. This kind of card is generally used in the automatic toll collection system of public transportation, ferry, subway and other occasions with frequent use, relatively less information and high reliability requirements. At present, the most common contactless IC card in the market is contactless logic encryption card. With its good performance and high cost performance, this kind of IC card has been favored by the majority of users, and has been widely used in public transport, medical treatment, access control and other fields. Because the non-contact logic encryption card chip adopts the stream cipher technology and the key length is not very l...

The annual CES (Consumer Electronics Show) opened in Las Vegas on January 6, 2016. As a world-renowned science and technology event, the concepts discussed in CES will become a hot topic in the next two to three years. However, in this CES, which seems to have no core theme, there are many things that are observed by interested people: the Internet of things, smart home, virtual reality, etc. More importantly, the combination of Internet of things and cloud computing. "Lazy economy" is being talked about by more and more people, or will become the new economic growth point of smart home in the next few years. An interesting phenomenon is that the concept of the lazy economy is very popular both at home and abroad. Although o2o has been used for many times since the beginning of the year, and now it has been slightly eased, the concept never seems to cool down. As Shahid Ahmed, a senior executive of PWC, said, "in the field of Internet of things, we have reached a turning point: the integration of consumer experience, digital technology and sensor technology." Fortunately, with the continuous development of related technologies, the smart home industry based on the home Internet of things can capture the "lazy economy" as a new growth field - the convenient life at your fingertips, which is the choice of the middle class who cares about saving time and is willing to try. What's more, "lazy people" are not idle, but to further liberate more time and energy to invest in more worthy areas. This coincides with the original intention of smart home interest: to make people's lives truly free and convenient through technology. What the "lazy man" requires is to work out the most reasonable scheme by intelligent calculation according to the actual situation in the simplest operation as possible, and to realize the requirements of accuracy and complexity as efficiently as possible. This requires not only technical support, but also the thinking close to the user's actual experience, otherwise it will become a chicken ribs. In fact, in the smart home industry, sharp manufacturers at home and abroad have caught the pass of this node, and timely launched a variety of products that are convenient for the user's life: sweeper robot, automatic fast food machine, intelligent lighting adjustment, intelligent door lock, etc. In terms of smart door lock, this CES is like the W2 walnut smart lock of CEI, which realizes the remote door opening and closing service of "cloud key", and provides a good experience for "lazy people" to break the space limit. It is worth noting that local excellent original manufacturers also have outstanding performance in the field of smart home, and they have also upgraded and fermented in the domestic market in recent years. There is no doubt that smart home based on "lazy economy" has great development potential. According to the latest report released by research and markets, it is predicted that the global smart home market will grow ...

Project Name:Vehicle-mounted Passive Keyless Enter (PKE)                     Project Date: 2016                       Project Partner: Tesla In 2016, RF-star collaborated with Texas Instruments to support Tesla to realize the world’s first vehicle-mounted passive keyless enter system. No need to bring key fob, even though no internet, as long as the phone has electricity, you can open the door and drive. Free your bag.

CC1352R is a multi-protocol Sub-1 GHz and 2.4 GHz dual-band wireless MCU. Compared with CC1352P device we talked about before, CC1352R has no power amplifier. The CC1352R device has very low active RF and micro controller (MCU) current, sleep current less than 1 μA and up to 80KB ram retention capacity protected by parity, which can provide excellent battery life and support long-term operation in energy collection applications relying on small button batteries. The CC1352R device combines a flexible ultra-low power RF transceiver with a powerful 48 MHz Arm ® cortex ® - M4F CPU. Low level RF protocol commands stored in ROM or RAM are processed by a dedicated radio controller (Arm ® cortex ® - M0), thus ensuring ultra-low power consumption and excellent flexibility. The sensor controller with fast wake-up and ultra-low power consumption 2MHz mode is specially designed for sampling, caching and processing of analog and digital sensor data, so MCU system can maximize sleep time and reduce working power consumption. Characteristics of CC1352R Micro controller Powerful 48MHz Arm ® cortex ® - M4F processor EEMBC coremark ® score: 148 352KB programmable flash memory in the system 256KB ROM for protocol and library functions 8KB cache SRAM (also available as general RAM) 80KB ultra-low leakage SRAM. SRAM is protected by parity to ensure highly reliable operation Ultra low power sensor controller with 4KB SRAM Sample, store and process sensor data Independent of system CPU operation Peripheral 4 32-bit or 8 16 Bit Universal timers 12 bit ADC, 200ksps, 8 channels AES 128 bit and 256 bit encrypted accelerometer Low power consumption Wide power supply voltage range: 1.8V to 3.8V Active mode Rx: 5.8ma (3.6V, 868mhz), 6.9ma (3.0V, 2.4GHz) Active mode TX (0dbm): 8.0ma (3.6V, 868mhz), 7.1ma (3.0V, 2.4GHz) Active mode TX (+ 14dbm): 24.9ma (868mhz) Sensor controller, low power consumption mode, 2MHz, operating infinite circulating current: 30.8 μ a Sensor controller, active mode, 24MHz, operating infinite circulating current: 808 μ a Radio part Dual band RF transceiver lower than 1GHz and 2.4GHz compatible with low power Bluetooth 5 and IEEE 802.15.4 phy and MAC standards Programmable output power up to + 14dbm (lower than 1GHz) and + 5dBm (2.4GHz), with temperature compensation The Birth of CC1352R Module Based on the CC1352R multi-protocol Sub-1 GHz and 2.4 GHz dual-band wireless MCU, the Chinese wireless modules manufacturer named RF-star has designed the multi-protocol module RF-TI1352B1 to fit a wide range of applications. RF-TI1352B1 with two bands antenna output will be a perfect choice to simplify your design work. Check the following applications of the CC1352R module, and you may get some good ideas for your IoT design. Applications of CC1352R Module Remote sensor Asset tracking and management Factory automation Wireless medical Energy collection Electronic shelf label (ESL) Home and building automation Wireless alarm and...

During January 6 to 9th 2015, the 47th Consumer Electronics Show( CES ) held successfully in Las Vegas with world's attention. In the last 2014, the smart home market have been got more attention from the media,enterprise and public. After a year of rapid development,smart home is one of the main characters in this CES that intelligent solutions and smart products attracted the public's attention. RF-star displayed intelligent lighting solution which enjoyed winning and popular at TI booth in CES. TI LPRF General Manager Oyvind Birkenes, RF-star CEO King Kang and TI LPRF Product Line Manager Jan-BJ rnar Lund RF-star smart lighting solution shows in TI booth in CES In recent years, in addition to the smart lighting solutions, RF-star has developed a series of smart solutions of consumer electronic products with customization, such as smart R/C toy, smart bracelet, ibeacon, anti-lost tracker, bluetooth e-cigarette, bluetooth e-scale, and etc. To prompt customers' commercialization and meet market demands, RF-star would make more efforts in RF applications with advanced technology.