Programming VIP

Abstract: as a representative and complete development, this case can be divided into three parts: code file planning, LED lamp driving development and LED lighting business development. This article is shared from Huawei cloud community< Use openharmory3 on Micro bear pie 0 lit LED(1)LED driver development >, author: shenlongju city. ...

I Basic characteristics of SDRAM 1. Internal memory bank-row-columnThere are four banks in total. Each bank has 213 rows and 29 columns, each of which is 16bit 2. Refresh cycle 8192refresh cycles/64ms, refresh one line every 7.8us on average 3. Introduction to data reading and writing and command sending SDRAM provides programmable read ...

1, Trolley device In the tutorial is the car device integrated on Taobao. In addition, I also bought some spare parts and configured my own car. https://detail.tmall.com/item.htm?id=608554421638&spm=a1z09.2.0.0.7e012e8d3NEMy0&_u=12kf16b6b4b Components include: 1. Trolley bottom plate (2), motor (4), wheel (4), DuPont wire, copper col ...

summary A2SA is the abbreviation of advanced AliOS Things sound architecture. It is the service framework of AliOS Things audio system, including audio driver layer, audio service interface layer and audio plug-in management. Some design concepts draw lessons from the design ideas of Linux ALSA, such as supporting VFS device driver mount acc ...

summary HTTP(HyperText Transfer Protocol) is an application layer protocol used to transfer hypertext. The network protocol stack of AliOS Things includes HTTP components and provides HTTP client standard capabilities. Developers can quickly realize data interaction with the server through HTTP GET, POST and other methods on the device side ...

Wio RP2040 Wireless mini WiFi Development board(hereinafter referred to as Wio RP2040 Development board)yes Seeed Studio The company launched a mini wireless in May 2021 WiFi Development board, which integrates Wio RP2040 wireless WiFi modular(See Figure 1)，The module includes 133 MHz Raspberry pie double core RP2040 MCU Chip and ESP8285 wirel ...

After the beginning of summer, the temperature rises gradually. "Heat" is one of the key words of everyone in summer. How to have a cool summer?   "Turn on the air conditioner in summer!", It's cool, but it's cool! The elderly and children at home are more likely to have cold and dizziness symptoms!   "It's really e ...

Recently, there is a project to make a micro gateway, which has requirements for size, volume, power consumption, cost and development cycle. The scheme is based on the previous Lora gateway for rapid research and development. The only difficulty is to drive multiple SX1278 with one MCU. By comparing sx12xxdrivers-v2 of SX1278 1.0 and sx12xxdri ...

1. Preface Signed up for the seven day Internet of things smart home training camp organized by 100ask. I talked about the basics 2 hours in the morning and advanced 2 hours in the afternoon. After two days of study, I really feel more enriched. In the next few days, I will successively record the key points, difficulties and my understanding ...

outline This paper mainly records some personal opinions on learning I2C protocol, and realizes STM32 to read and write EEPROM data based on I2C protocol Statement: due to limited personal ability, this article is only personal learning notes, and I hope to point out any mistakes I2C characteristics Support device bus, that is, multiple d ...