Today, we will discuss interrupt handling in ARM Cortex-M. In embedded systems, interrupts are the core mechanism for achieving real-time responses. Imagine if there were no interrupts: • When a button is pressed, the system might be busy with other tasks and miss the response. • Incoming communication data might be lost due to untimely … Read more
CPU: STM32F429IGT6 For other STM32 chips or other ARM Cortex-M chips, the solution is generally the same. It is recommended to read this article in full before debugging the issues you encounter. 1. Basic Knowledge In ARM Cortex-M series processors, there are several system exceptions dedicated to fault handling. The faults in CM3 can be … Read more
This article is reprinted from the Extreme Technology CommunityExtreme Technology Column: Arm Technology BlogSource: Helium Technology Lecture | The Power of Sudoku, Registers, and Belief As artificial intelligence (AI) permeates various applications, the largest number of IoT devices in the market will also be endowed with intelligence. The Arm® Helium™ technology brings critical performance enhancements … Read more
Recently, an engineer asked me how fast the highest toggle speed of an MCU can reach. I had heard about this topic years ago, but I had never actually tested it. This time, I took the opportunity to conduct some tests and discovered a lot of knowledge hidden within. For this test, I selected three … Read more
This article is reprinted from the Extreme Community Extreme Column: Agile MM32 MCU Author:Nuoeriris The Arm processor is designed based on the principles of Reduced Instruction Set Computing (RISC). The instruction set and associated decoding mechanisms are relatively simple, featuring a 32-bit Arm instruction set and a 16-bit Thumb instruction set. The Arm instruction set … Read more
Professor Wang Yihuai from Suzhou University, who has a deep collaboration with Arm Technology Education Program, is currently teaching the online open course “Embedded Systems and Applications” based on the Arm® Cortex®-M processor, which has been highly recommended by us. This course has now been recognized as a national quality course. Embedded systems are an … Read more
1. Introduction to Cortex-M0 Processor Core Exception Interrupts The Cortex-M0 core is equipped with an exception response system that supports numerous system exceptions and external interrupts. Among them, numbers 1-15 correspond to system exceptions, while numbers greater than or equal to 16 are all external interrupts. The smaller the numerical value of the priority, the … Read more
This article is reproduced from the Jishu Community Jishu Column: Agile MM32 MCU Each external interrupt has a corresponding priority register. The Cortex-M0 has a total of 8 NVIC-IPR registers, with each register managing 4 IRQ interrupts. Therefore, the M0 supports a maximum of 32 IRQ interrupt sources, plus 16 core interrupts, which means the … Read more
Digital signal processing is a very fundamental discipline, but its importance to communication majors is self-evident To better assist teachers and students in learning this course, The Arm UK education team has developed this English textbook for a joyful learning experience~ “Digital Signal Processing: Theory and Practice Based on Arm Cortex-M Microcontrollers” “Digital Signal Processing: … Read more
1. Definition: – JTAG (Joint Test Action Group) is a standard for testing and debugging integrated circuits, widely used in embedded systems development. 2. Purpose: – To debug, test, and program embedded systems, allowing developers to inspect and manipulate the internal state of the processor. 3. Components: – The Test Access Port (TAP) controller manages … Read more