This is a further refinement of the Cortex-M3 programming model, covering more specific implementation details and key operations: 1. Refinement of Register Groups 1. Detailed Explanation of Special Registers CONTROL Register (32 bits, modifiable only at privileged level) Bit 0 (`nPRIV`): 0 = Privileged mode (can access all resources) 1 = Unprivileged mode (restricted access) … Read more
The C++ exception handling mechanism allows a program to transfer control from the point of error to specialized error handling code when a runtime error occurs. The core mechanism is based on three keywords: throw, try, and catch. Key components: 1. throw When an error is detected, an exception object is thrown using throw. Any … Read more
In embedded systems, Cortex-M3 is a 32 bit RISC processor core designed by ARM and is widely used in low-power, real-time applications (such as IoT, industrial control, etc.). Its programming model defines the architectural features, registers, memory access, exception handling mechanisms, and other aspects that developers need to understand. Below are the core contents of … Read more
In embedded development, handling asynchronous events is an unavoidable challenge. For instance, reading sensor data from an accelerometer to calculate steps, or triggering RTOS context switches via timers, all rely on the support of exception handling mechanisms. Today, we will discuss the exception handling model of ARM Cortex-M. The Core of Exception Handling In the … Read more
▼ Click the card below to follow me ▲ Click the card above to follow me —— Another “universe” for Python enthusiasts Today, we won’t talk about elephants dancing or the myriad of web development topics; instead, let’s dive straight into a niche but super cool topic—MicroPython. This is like a “mini clone” of Python, … Read more
MarkDown # SensorHub: Exploring the Wonderful World of Multi-Sensor Fusion with Python Hello everyone! Today we are going to explore a super cool Python library – **SensorHub**. This is a toolkit specifically designed for multi-sensor data collection, processing, and fusion, particularly suitable for Internet of Things (IoT) and smart hardware development. Imagine your Raspberry Pi … Read more
Click the blue "Arm Selection" in the upper left corner and select "Set as Favorite" 1 Introduction This article introduces the exception and privilege model in Armv8-A. It covers the different types of exceptions in the Arm architecture and the behavior of the processor when an exception is received. This article is relevant for developers … Read more
In the digital maze of the internet, we often yearn for a key that can easily traverse network barriers. Today, I want to share with you a super cool Python networking tool — PythonNetKey . This is not just an ordinary network module, but a magical tool that helps you elegantly handle network connections, data … Read more
▼ Click the card below to follow me ▲ Click the card above to follow me Python developers often encounter an awkward scenario: as the scale of the project expands, the complexity of the code grows exponentially. Managing large applications is like taming a dragon – it seems impossible, but with the right techniques, it … Read more
1. Exception Handling Practices When writing C++ code, unexpected errors and exceptions may occur. To make our code more robust and reliable, we need to use the exception handling mechanism to handle these situations. 1. Writing Exception Handling in High-Quality Code When writing high-quality code, we should follow some guidelines to design and write exception … Read more