Recently, a reader asked the following question: Why is the default configuration for the RTOS system tick (Tick) set to 1000? Can I configure it to 100, 10000, or 2000? Many beginners have this question, including myself when I first learned about RTOS. I was confused about what the different tick configurations meant and their … Read more
Each Cortex-M core integrates a SysTick module, as this module is an essential (timer) function for microcontroller projects.Whether it is the latest Cortex-M85 core or the classic Cortex-M3 microcontroller, the SysTick module is integrated. cm3.h and cm85.h Microcontroller developers are most familiar with the core_cm3.h (core_cm85.h) files, which define most of the content related to … Read more
1. Introduction When learning about the 51 microcontroller, we often use the combination of Keil and Proteus for experiments. This simulation saves us a lot of hardware and time costs, allowing us to visually observe the execution process of the code. However, when switching to the STM32 series microcontrollers, Proteus is obviously not supported, but … Read more
STM32 has three different clock sources that can be used to drive the system clock (SYSCLK): 1: HSI oscillator clock (internal clock) 2: HSE oscillator clock (external clock, provided by the crystal) 3: PLL clock (Phase-Locked Loop clock) These devices have the following two secondary clock sources: (1) 40kHz low-speed internal RC, which can be … Read more
This article is selected from the Extreme Technology Community column “Bare Metal Thinking”. The article mainly shares free tools related to “performance/time” for super embedded systems open-sourced on GitHub. Is it really free from the start? For the well-known Cortex-M processors, whether it is the Cortex-M0 emphasizing extreme resources and low power consumption or the … Read more
Recently, a reader asked this question: Why is the default configuration of the RTOS system tick (Tick) 1000? Can I set it to 100, 10000, or 2000? Many beginners have this question, including myself when I first learned about RTOS. I was confused about the different values for tick configuration and their impacts. Today, let’s … Read more
This article introduces a precise delay method in the Cortex-M kernel. Introduction Why learn this delay method? Many times when we run an operating system, we generally occupy a hardware timer – SysTick, and the clock tick of our operating system is generally set to 100-1000HZ, which means an interrupt occurs every 1ms – 10ms. … Read more
Follow+Star Public Account Number, don’t miss wonderful content Author | strongerHuang WeChat Official Account | strongerHuang Cortex-M is an ARM core designed for MCU, launched about 20 years ago, and the most classic is the Cortex-M3 core, which is one of the most widely used cores on the market today. Currently (2024-09), the latest and … Read more
Cortex-M is an ARM core aimed at MCUs, which has been around for about 20 years, with the most classic being the Cortex-M3 core, which is one of the most widely used cores on the market today. As of now (September 2024), the latest and most powerful microcontroller core is the Cortex-M85. https://www.arm.com/en/products/silicon-ip/cores/cortex-m The Cortex-M85 … Read more
Click the card below to follow Arm Technology Academy This article is selected from the “Arm Technology Blog” column, originally from Zhihu. This series will guide you to learn about the Cortex-M3, including its architecture design, register composition, concepts of clock and bus, functions and usage of various peripherals, etc. Original article: https://zhuanlan.zhihu.com/p/52235675 The Getting … Read more