Please help me find out what is wrong with the circuit. The speaker can play sound when it is directly connected to the voice IC, but there is no sound after it is connected to the power amplifier. Th...
Hardware platform: STM32F746G-DISC
Development platform: KEIL_5.29
I will not introduce the detailed structure of MP3 files here , but only introduce how to use the MP3 decoding library. If you need t...
1. There are signals in and out, and there may be a clk. When in changes from low level to high level, out should output high level immediately. No matter how in pin changes, out should not change. Ho...
Every time the program of the board is changed, the board must be powered off, then powered on again, and the program must be burned again before it can run. This is inconvenient. Are there any improv...
Well, I participated in an event and was given a board for free, but the prerequisite was to debug and port it to an MCU, so I wrote the Arduino UNO. Then after I got it, I found that ST actually wrot...
jianshanST Sensors & Low Power Wireless Technology Forum
1. Introduction to DMA 1. Introduction to DMA DMA (Direct Memory Access) is a data transfer method that can greatly reduce the CPU workload. The CPU has many functions such as transferring ...[Details]
On the morning of April 15, Bloomberg reported, citing a developer log, that Apple is internally testing several variants of the next-generation M2 chip and the new Mac series computers that wi...[Details]
When sunlight shines on the semiconductor pn junction, new hole-electron pairs are formed. Under the action of the pn junction electric field, holes flow from the n region to the p region, and elec...[Details]
Some insulating objects (such as plastics, porcelain, etc.) can reach a stable value in an instant under the action of DC voltage. However, for electrical equipment such as generators, transformers,...[Details]
First, let's introduce the internal circuit structure of 555, as follows, where the transistor plays a control role, A1 is an inverting comparator, A2 is a non-inverting comparator, and the referen...[Details]
This year, there have been amazing new advances in public use. One AI-generated image even won an art prize in competition with human artists (https://www.nymes.com/2022/09/02/chnology/-artifial-li...[Details]
I. Introduction
In order to ensure the quality of MCM during the manufacturing process, testing must be performed. Substrate testing is also one of the key tests in MCM manufacturing. Substrate...[Details]
According to reports, MediaTek announced that its subsidiary Airoha will acquire 100% of Jiuyang's shares at NT$22 per share, spending approximately NT$150 million. This is MediaTek's third merger an...[Details]
introduction
As one of the ways to achieve high-level autonomous driving, V2X (vehicle-to-everything) includes various application communication scenarios such as vehicle-to-vehicl...[Details]
This series of notes is based on teacher Wei Dongshan's development board. What you will learn in this section: How to use openJTAG to burn How to use DNW and uboot to burn How t...[Details]
The previous article by Strategy Analytics on the impact of the COVID-19 pandemic on our semiconductor industry and related thoughts has sparked widespread discussion in the industry (Analysis of the...[Details]
Summary: Charging convenience does not come for free. Engineers have come up with many solutions behind the scenes. Looking to the future, do not buy cars that do not support USB Type-C interface. ...[Details]
iPhone X is on the list of the 25 best inventions of 2017 published by Time Magazine. In addition to removing the Home button, the addition of the next generation biometric authentication technolog...[Details]
Digital blogger @数码闲聊站 recently revealed on Weibo that the new iQOO5 series will be officially launched this month, equipped with 100-watt fast charging. IT Home learned that the IQOO bra...[Details]
pc：Centos5.4
Kernel: Linux 3.0.1
Development board: ok6410
Cross compiler: arm-linux-gcc 4.4.1
LCD Driver
How to write LCD driver?
1. Allocate an fb_info structure: fr...[Details]
Analog electronics
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