Generally, ROM is used to store firmware, while RAM is used to hold data. Since FLASH ROM has faster read and write speeds and is easier to erase compared to ordinary ROM, it is typically used to store user programs and data that need to be permanently saved. For example, the core of a household … Read more
Those who play with microcontrollers must have heard of IAP, ICP, and ISP. Today, I will help everyone “consolidate” the relevant knowledge. ● ICP (In Circuit Programming) ● ISP (In System Programming) ● IAP (In Application Programming) 1. ICP (In Circuit Programming) Those who have used Nuvoton microcontrollers must know that Nuvoton provides a set … Read more
I have always been curious about a question: every time I finish writing a microcontroller program and use the burning software to upload it, I can see the size of the burning file, which is the hex file size: The microcontroller chip I am using is the STM32F103C8T6, which has a program memory (flash) of … Read more
Learning to use microcontrollers involves understanding the hardware structure of the microcontroller and the application of its internal resources, as well as learning various initialization settings for functions in assembly or C language, and programming to implement various functionalities. Here are some of my experiences: Step 1: Using Digital I/O Using button inputs to signal, … Read more
Teacher Liao Changchu A university teacher told me: “Recently, while reviewing students’ graduation theses, I found that some students drew flowcharts for PLC programs just like microcontroller programs. However, when the system has analog control links, the flowcharts drawn are difficult to explain the issues, making it hard to create a comprehensive flowchart that reflects … Read more
Today we analyze a classic microcontroller power supply circuit, the schematic diagram of the circuit is shown below: ▲ Simplified switch circuit Before powering the circuit, the switch “TEST” is open, and the microcontroller is not powered through VCC. At this point, the base of T1 is grounded through R9 (100k), putting it in the … Read more
Learning about microcontrollers is a long and somewhat painful process. Especially for beginners, it is difficult to form a systematic learning framework when various types of knowledge are incomplete in the early stages. This article aims to provide a thought process and list some essential foundational knowledge before getting into microcontrollers. 1. There are only … Read more
【2024 First Release】The Drone Giveaway Activity Returns! More Writing, More Rewards! Introduction The USB power meter is an essential tool for engineers! It’s commonly used to measure the current of phones, products, and circuits. I previously purchased a small power meter, which is very convenient for measuring the power of power banks and lamps. This … Read more
The microcontroller’s CPU, while processing an event A, receives a request to quickly handle another event B (interrupt occurs); the CPU temporarily interrupts its current work to process event B (interrupt response and interrupt service); upon completing event B, the CPU returns to the original point of event A that was interrupted to continue processing … Read more
IAP Let’s start with the most relevant topic mentioned above, IAP (In Application Programming). As the name suggests, it means that user code can erase and program the flash memory area. Different MCUs have different flash memory addresses; for example, the flash memory starting address for LPC1778 is 0x0, while for STM32 it is usually … Read more