1. Description and Code Implementation Implement a table-driven key state machine that can be coded according to the steps of state enumeration definition, event enumeration definition, callback function types, state table structure, state table definition, and state machine processing function.Table-driven design: centralizes the mapping of <span>"state – event – next state – callback"</span> in a … Read more
For friends engaged in embedded or C language development, have you often encountered this headache: when handling key presses, serial protocols, or device state transitions, you end up writing a bunch of nested if-else or switch-case statements, with logic tangled like a maze, making subsequent code modifications and bug tracking a nightmare? In fact, there … Read more
In various industries and applications, many FPGA designs can often be seen. A very common phenomenon is that designers often use complex finite state machines (FSM) to implement functions such as I²C, SPI, and GPIO timing control. However, as functionalities continue to expand, these FSMs often become very large and difficult to maintain, significantly increasing … Read more
Introduction Have you ever written code like this: layers of nested if-else statements, a multitude of condition checks, making maintenance a nightmare? // Troublesome embedded control logic <section class="mp_profile_iframe_wrp custom_select_card_wrp" nodeleaf=""> <mp-common-profile class="mpprofile js_uneditable custom_select_card mp_profile_iframe" data-pluginname="mpprofile" data-id="gh_acd22af287b7" data-nickname="An Embedded Programmer" data-headimg="https://cdn-doocs.oss-cn-shenzhen.aliyuncs.com/gh/doocs/md/images/mp-logo.png" data-service_type="1" data-verify_status="1"></mp-common-profile> <br class="ProseMirror-trailingBreak"> </section> void device_control() { if (is_power_on) { if (is_initialized) … Read more
For friends engaged in embedded or C language development, have you often encountered this headache: when handling key presses, serial protocols, or device state transitions, you end up writing a bunch of nested if-else or switch-case statements, with logic tangled like a maze, making subsequent code modifications and bug tracking a nightmare? In fact, there … Read more
Repository Address:https://github.com/0x1abin/MultiButton An efficient and flexible multi-button state machine library that supports various button event detection. Features ✅ Multiple Button Events: Press, Release, Single Click, Double Click, Long Press Start, Long Press Hold, Repeat Press ✅ Hardware Debounce: Built-in digital filtering to eliminate button bounce ✅ State Machine Driven: Clear state transition logic with high … Read more
In-Depth Analysis of Siemens PLC Programming: From Concept to Practice Learning and mastering Siemens PLC programming cannot be limited to just instructions and software operations. It is an art of designing and implementing automation control logic. The core idea can be summarized as: translating the actions of physical devices and process flows into deterministic logical … Read more
In embedded system development, the behavior of devices often changes with internal state transitions. The State Pattern can manage these state-driven behavior changes, making the code clearer and more maintainable. Below, we will demonstrate this using QP/C. <strong>Pattern Definition</strong> The State Pattern is a behavioral design pattern that allows an object to change its behavior … Read more
Last night, I received a call from an old friend who works on projects at a small automation company. He had taken on a municipal project to install traffic lights at a newly constructed intersection. He was quite distressed: “Bro, I spent three days drawing the ladder diagram and used a ton of timers. The … Read more
Click the blue text above to follow us Dear programmers, today we are going to talk about the superstar of embedded systems – the state machine! It acts like a traffic commander, organizing the chaotic behavior of your system into a well-structured manner. Imagine this: your smartwatch is usually “asleep” (low power state), and with … Read more