This article focuses on specific business aspects identified by QCI, such as base station-level QCI settings or cell-level QCI settings. This can lead to different QCI business switching parameter group IDs, DRX parameter group IDs, inter-system policy configuration group IDs, RLC PDCP parameter group IDs, logical channel priorities, etc. This article only introduces relevant commands; … Read more
Author: aurelianliu Refer to scheduling, memory, files, networks, etc., encountered during work. 1. OS Running States X86 architecture, user mode runs in ring3, kernel mode runs in ring0, two privilege levels. (1) The kernel and some privileged instructions, such as filling page tables, switching process environments, etc., generally operate in ring0. Kernel mode includes the … Read more
Follow Our Official Account, Don’t Get Lost on the Technical Road Introduction When running a Kubernetes cluster, it is crucial to ensure that critical Pods receive the resources they need to operate normally. This can be challenging if your cluster is heavily loaded or lacks sufficient available resources. One way to ensure that critical Pods … Read more
1. Preemptive Priority and Response Priority The STM32 interrupt vector has two attributes: preemptive priority and response priority, with a smaller attribute number indicating a higher priority level.Preemption refers to the ability to interrupt other interrupts, meaning that it allows for nested interrupts (interrupt B can interrupt the execution of interrupt service function A, and … Read more
Content Overview: This article begins with how tasks switch, introducing the ready list and priority table in the RTOS kernel, layer by layer unveiling the mystery of the RTOS kernel’s preemptive scheduling method. Only with an in-depth understanding of the kernel can better applications be created. 1. Knowledge Point Review 1.1. Review of Previous Article … Read more
While sitting on the high-speed train from Shanghai to Beijing, the long journey indeed makes one feel bored (I couldn’t get a direct train, so I had to go slowly, stopping at each station. It’s frustrating, even in the era of high-speed trains. It reminds me of the time I spent hours on a green … Read more
Electric Hero I want to learn RTOS, but I don’t know where to start, sigh Real-Time Operating System? I’m familiar with it, let me explain it to you slowly. Science Master Real-Time Operating Systems (RTOS) are widely used in consumer electronics, entertainment products, household appliances, industrial equipment, medical instruments, military weapons, and scientific research equipment. … Read more
Click the above “Material Person” to subscribe to us Introduction In recent years, portable wearable electronic devices have begun to be widely used in professional fields and in daily life, evolving towards miniaturization, intelligence, multifunctionality, and flexibility. However, the main problem faced by wearable electronic products is that existing batteries are insufficient to provide continuous … Read more
Academician Wang Zhonglin and the research team of Dong Kai from the Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, have developed a coaxial structure of fiber-shaped triboelectric nanogenerators and integrated supercapacitors to construct self-charging power textiles. This research was published in the high-impact journal Nano Research Energy. Welcome to read and download! … Read more
Recycling of human teeth for piezoelectric energy harvesting Yuanyuan Yin, Shuaijie Liu, Yuehui Wang, Sihan Yang, Min Ding, Xiaohui Xu, Wei Ji, Jinlin Song Giant 2024, 20, 100333 https://doi.org/10.1016/j.giant.2024.100333 Abstract In the human body, biomolecules or tissues with non-centrosymmetric structures can exhibit piezoelectricity; however, there is limited research on utilizing natural tissues to manufacture piezoelectric … Read more