A PLC (Programmable Logic Controller) is a digital electronic system used for controlling, executing, and monitoring automated machinery. It is widely applied in various fields such as building equipment control, water treatment, energy, and industrial automation, forming a large market scale. With the development of the “New Four Modernizations” in automotive electronics, the growth rate … Read more
Click the above Computer Enthusiasts to follow us When it comes to ARM, everyone should be very familiar with it. It does not produce chips; it only provides an idea for chip design, including native core IP and the ARMv instruction set. Among them, the core IP includes the well-known Cortex-A78 and Cortex-X1. Chip manufacturers … Read more
Today I flashed a firmware, and it ran normally. However, when I tried to flash another firmware, I encountered this issue: No Cortex-M Device found in JTAG chain.Please check the JTAG cable and the connected devices. I found the answer on Baidu, which indicated that treating the JTAG pins as I/O pins would cause the … Read more
Summary gaiyao There are now 8 processor members in the ARM Cortex-M processor family. In this article, we will compare the product features among the Cortex-M series processors, focusing on how to choose the right Cortex-M processor based on product applications. This article will detail the instruction sets of the Cortex-M series processors and their … Read more
Many engineers prioritize learning the 51 microcontroller when starting with embedded systems due to its low cost, abundant resources, and wide application fields. However, there are many misconceptions when learning the 51 microcontroller. This article will briefly discuss three common misconceptions. 1. The 51 Microcontroller is the Foundation for Learning This viewpoint may have been … Read more
Since STMicroelectronics (ST) launched the first STM32 Cortex-M core MCU in 2007, over 16 years, the cumulative shipment of the STM32 series has exceeded 11 billion units, including mainstream, ultra-low power, high-performance, wireless MCUs, and five major series of MPUs. ST’s ranking in the global general-purpose MCU market has jumped from 3rd place in 2017 … Read more
With the commercialization of 5G technology, the era of the Internet of Things is approaching. The fourth industrial revolution, represented by the Internet of Things, big data, and artificial intelligence, has begun, making smart hardware, mobile IoT, and edge computing hot areas for research and development. The principles and development methods of embedded systems have … Read more
This article is from CSDN Blog on FreeRTOS Basics, and it mainly shares important considerations for using FreeRTOS with Cortex-M. Original link: https://blog.csdn.net/zhzht19861011/article/details/50135449 Before reading this article, you must understand the meanings of two macros defined in FreeRTOSConfig.h. The article “FreeRTOS Kernel Configuration Description” explains these two macros: ●configKERNEL_INTERRUPT_PRIORITY ●configMAX_SYSCALL_INTERRUPT_PRIORITY FreeRTOS is a perfect match … Read more
1, 1, 2, 3, 5, 8, 13, 21, 34 …… Many people are familiar with this series of numbers, which is the famous Fibonacci sequence, also known as the “rabbit sequence.” This sequence has two obvious characteristics: first, the sum of the two preceding terms forms the next term; second, excluding the first four numbers, … Read more
For embedded developers, understanding assembly language and core registers is the foundation for a deeper understanding of the kernel. I never expected there would be so much content when I started writing, and I hope to convey many valuable insights. I would like to especially thank Teacher Wei Dongshan for his videos, which are absolutely … Read more