Today’s Tech News Yesterday, Tencent’s stock price surged, reaching a historic market value of $300 billion, while Alibaba’s market value stood at $280 billion, and Baidu only at $60 billion. Tencent has now entered the top ten companies in the world by market value, with giants like Apple, Google, Microsoft, Amazon, and Facebook ahead of … Read more
Click the blue text to follow us Please message us to add to the whitelist If you like this article, feel free to share! For many small, portable Internet of Things (IoT) applications, the “Holy Grail” is a button battery that lasts 10 years. This is no easy task, as most inexpensive button batteries provide … Read more
Why is the BLE protocol stack layered? How to understand BLE “connection”? What would happen if the BLE protocol only had the ATT layer and no GATT layer? 1. Protocol Stack Framework Generally speaking, we refer to the implementation code of a protocol as a protocol stack. The BLE protocol stack is the code that … Read more
Smartphones are ubiquitous in people’s daily lives, and daily activities such as traveling, dining, shopping, entertainment, and chatting are almost inseparable from smartphones. The importance of smartphones is self-evident, so losing a phone is a significant problem for users. In response to this situation, Apple phones come with a built-in Find My program that can … Read more
Click the blue text to follow us Bluetooth Low Energy technology is a popular short-range wireless protocol for the Internet of Things (IoT), with its most significant advantage being high energy efficiency. It is increasingly being used across various segments of IoT. The Bluetooth Low Energy Mesh Network enables various applications that were previously impossible … Read more
2016 Microcomputer and Applications Issue 18 Authors: Shen Yi, Chen Zhangjin, Zhang Hongbin, Wu Zhiguo Abstract: This paper proposes a design for a maintenance key based on Bluetooth Low Energy technology to address the issues faced by enterprises using traditional keys to manage key cabinets, such as centralized management and poor security. The system uses … Read more
1 Introduction Legacy advertising only sends on channels 37 (2402), 38 (2426), and 39 (2480), and can only use 1M PHY, with a maximum effective data payload of 31 bytes. Core 5.0 introduces extended advertising, which can carry more advertising data, allowing the application layer to set up to 1650 bytes of advertising data. It … Read more
>> Technical Article | Bluetooth Low Energy Direction Finding and Testing ① 4. MT8852B Supported AoA/AoD RF Testing Functions 4.1 Output Power The Tx level variation in the Constant Tone Extension (CTE) section will affect the phase detection accuracy. This measurement calculates the average power and peak power values using traditional output power measurement methods … Read more
1. Introduction Through the introduction of “Bluetooth Protocol Analysis – Protocol Architecture”, everyone should have a simple understanding of the Bluetooth protocol stack, but there is certainly still a feeling of “half-understanding, half-uncertain”. It’s perfectly normal to have this feeling, as the Bluetooth protocol is a long-standing and relatively large protocol that is not easy … Read more
Overview of Bluetooth Low Energy Testing Requirements Bluetooth Low Energy (BLE) devices use a total of 40 channels, including 3 advertising channels (37, 38, 39) and 37 data packet transmission channels (1 to 36). The Link Layer data packet consists of four parts, as shown in the figure below: After the design of the Bluetooth … Read more