1Introduction to the Independent Watchdog The watchdog is a hardware timer whose main function is to forcibly reset the entire system when a software fault or program runaway occurs, allowing it to return to normal operation. It is an independent system that can continue to operate even if the main clock fails, thus ensuring high … Read more
Unveiling Low-Power Embedded Systems: A Comprehensive Implementation from Flowchart to Code In battery-powered embedded devices, low-power design is crucial for extending battery life. This article takes the “low-power processing system with an independent watchdog” as an example, combining flowcharts and code implementations to dissect the core logic of low-power design, exploring how to enable seamless … Read more
Embedded Technology – Watchdog 1. What is a Watchdog? What problem does it solve? Core Issue: Embedded systems operate in complex environments and may become unresponsive due to software defects (such as infinite loops, stack overflows), external electromagnetic interference, or power disturbances, leading to the program “running away” (i.e., the PC pointer enters an uncontrollable … Read more
Is a system watchdog really a “dog”? For newcomers in industrial control, the first time they hear about a “system watchdog,” they are likely to be puzzled: is it a pet dog for the device? Or some hardware marked with a “dog” label? The answer is quite simple —The system watchdog (Watchdog) is the “dedicated … Read more
Click the blue text to follow us “ Imagine this: a car speeding down the highway suddenly has its ESP system malfunction due to electromagnetic interference. Without an effective protection mechanism, the braking system could completely fail, leading to catastrophic consequences. However, in reality, such situations are rare, precisely because there is a silent “guardian” … Read more
▎Introduction In the digital age, our computers accumulate a large number of files, ranging from documents, images, to videos and audio in various formats. Manually organizing these files is not only time-consuming but also prone to errors. This article will introduce how to use Python to build an intelligent folder monitoring and automatic classification system, … Read more
Follow+Star Public Account Number, don’t miss exciting contentSource | Embedded Software Guest House During the development of microcontroller projects, crashes are one of the most troublesome issues. A crash can affect user experience at best, and at worst, it may lead to device damage or safety incidents. Common Causes of Crashes Classification of Causes Hardware … Read more
1. Two Types of Watchdogs in STM32 The STM32F103C8T6 has two built-in watchdogs: the Independent Watchdog and the Window Watchdog. Independent Watchdog (IWDG) Uses an internal low-speed clock (LSI, typical value 40kHz) as the time base. It cannot be stopped and can operate independently even if the CPU hangs. It is commonly used for system-level … Read more
System unexpectedly rebooting, critical data lost? It might be your watchdog ‘protesting’!As an embedded developer, have you ever encountered such an awkward scenario: the microcontroller is writing critical data to internal Flash, and suddenly the system reboots, resulting in data loss and making it difficult to diagnose the fault? This is likely due to the … Read more
In critical scenarios such as industrial control and server applications, the stable operation of programs directly relates to business continuity and system reliability. Imagine if a server program suddenly becomes unresponsive without anyone knowing; it could lead to severe consequences such as data loss and service interruption. Today, we will introduce the “Watchdog” technology, which … Read more