The previous article introduced how the clocks of the Central and Peripheral in a piconet are synchronized, as well as the time slots (hereafter referred to as slots). Now, we will discuss how to transmit and receive.1. Transmit/Receive TimingIn a piconet, the Central always starts transmitting on even slots (i.e., when CLK1=0), while the Peripheral … Read more
Click the blue text Follow us ETHERCAT Accessories Product Overview ETHERCAT Accessories are used for the ETHERCAT data acquisition and control system. Dewesoft provides a range of EtherCAT accessories for interconnection, power supply, and synchronization between Dewesoft EtherCAT data acquisition systems. EtherCAT power injectors, synchronization connectors, and repeaters are essential tools for distributed EtherCAT data … Read more
In-Depth Analysis of FreeRTOS Kernel Source Code: From Task Scheduling to Interrupt Handling Introduction As a representative of embedded real-time operating systems, FreeRTOS has an elegant and efficient kernel implementation. This article will delve into the key implementations of the FreeRTOS kernel, including task scheduling, memory management, interrupt handling, and other core mechanisms. Task Management … Read more
1. Overview of Shared Memory Technology Shared Memory is one of the fastest inter-process communication (IPC) methods in Linux systems, allowing multiple processes to access the same physical memory area, thus avoiding the performance overhead of data copying between processes. Compared to other IPC mechanisms such as pipes and message queues, shared memory has the … Read more
1. ECC MIPI CSI-2 uses a 24-bit ECC scheme. Inputting 24bit data, ECC encoding is performed to obtain an 8bit ECC result. Note: The 7th and 6th bits of the ECC byte must be 0. Data mapping relationship: Data identifier in the packet header DI[7:0] → corresponds to ECC input D[7:0] Low byte of word … Read more
Multithreading Interview: Interview Questions on Thread Synchronization and Communication in C In multithreaded programming, thread synchronization and communication are very important topics. These concepts not only help programmers avoid data conflicts but also ensure effective collaboration between multiple threads. This article will explain these fundamental concepts in detail and demonstrate their implementation in C language … Read more
First Affiliated Hospital of University of Science and Technology of China Professor Yan Ji Device therapy is an important treatment method for heart failure, especially severe heart failure. Currently, the acceptance and prevalence of this therapy in China still lag behind that of developed countries in Europe and America. This article reviews some representative heart … Read more