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Author: bigbat 1, Introduction W800 wifi chip is integrated in ch2601 development board. This chip is a complete mcu chip. Theoretically, there is no need for the main chip of ch2601 to worry about network communication. Just send instructions and data to w800. Ch2601 interacts with w800 chip through SPI bus and communicates with AT command ...

1. Introduction to design requirements and hardware environment 1.1 project background Greening management system is widely used in real life and production. It is an integrated system integrating environmental perception, planning and decision-making, automatic management and so on. At present, the regional greening on both sides of urban ro ...

Absrtact: This article will demonstrate how to generate avro data by serialization and parse it using FlinkSQL. This article is shared from Huawei cloud community< [technology sharing] serialization and deserialization of Apache Avro data & & flinksql parsing Avro data >, author: third uncle of Nanpai. Technical background ...

Starting Jishu community If you are interested in Arm related technologies, you are welcome to join the technology wechat group. preface I've always liked the products of silicon speed home. The design of these boards is really deep in my heart 😍. I was lucky to participate in this silicon speed R329 development board evaluation activity ...

0x00 Preface Because it was mentioned earlier that for the relevant pin test of HC32F460, the author recently completed a simplified SPI bus according to the device, so put it on the MCU to test the effect. 0x10 introduction As an SPI simulator, he needs at least: A way of settingAn interface to view the current statusA write interfaceA rea ...

What input mode is used to detect the input level signal? Simply remember: Detection port input low level 0 requires pull-up GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; Detection port input high level 1 needs to use pull-down GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD; You don't know the schematic diagram of your external key and wha ...

ESP8266 and ESP32 intelligent lantern development series article directory Part 1: the simplest DIY intelligent color lamp ① based on ESP8266 (use the button to light up the ordinary RGB lamp on the web page) Part 2: the simplest DIY intelligent color lamp based on ESP8266 ② (RGB lamp is controlled by buttons and sliding bars on Web pages) ...

We know that to implement https, MQTT and other protocols, communication security is required, and the client must support tls certificates. However, it seems that we don't need to pay attention to tls when we open the computer and mobile browser to visit https website every day? The answer is that the browser manufacturer has helped us to be ...

Background introductionIn order to ensure the security of communication, the certificate based TLS 1.2 two-way authentication system is used for MQTT communication between Amazon IoT equipment and Amazon IoT Core. The so-called two-way authentication means that Amazon IoT device end needs to install Amazon IoT device certificate, and the CA cer ...

1 Introduction Hi, everyone, this is senior Dancheng. Today I'd like to introduce a single chip microcomputer project made by senior students Design and implementation of blood oxygen and heart rate detector based on STM32 It can be used in curriculum design or graduation design Technical solutions Design help:<Q>746876041 2 main d ...