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1. Project Overview 1.1 Introduction Laser ranging has high angular resolution and strong anti-interference ability. It can avoid the multipath effect and ground interference of microwaves close to t...[Details]
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Analyze and interpret the Bootlaoder written by Chenmingji for Zhou Ligong's development board EasyARM LPC2210 development board.
1. Variable (constant) declaration
First declare
the ...[Details]
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In actual production operations, time is money, so machine efficiency is a decisive factor in manufacturers' profitability. This has prompted manufacturers to pay attention to leading suppliers who ca...[Details]
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In practice, the MCU port must consider the debounce problem when connecting the switch device, or add a delay in the hardware, or add a software delay query function module. Here, we consider such a ...[Details]
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The PDF417 barcode is a high-density, high-information-content portable data file. It is an ideal means to automatically store and carry large-capacity, high-reliability information such as certifi...[Details]
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1. ADR pseudo-instruction --- small range of address reading
The ADR pseudo-instruction reads an address value based on a PC-relative offset or an address value based on a register-relative offs...[Details]
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It has been nearly half a year since I started working on ARM. I have made some progress on my first project. I finally feel like I have gotten started. In the past six months, I have experienced the ...[Details]
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1. PLL (Phase Locked Loop) In order to reduce electromagnetic interference and reduce inter-board wiring requirements, the frequency of the crystal oscillator connected to the chip is usually very lo...[Details]
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PCF8591 is a single-power, low-power 8-bit CMOS data acquisition device with 4 analog inputs, 1 analog output and a serial I2C bus interface for communicating with the MCU. The three address pins A0...[Details]
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Since the traditional laser rangefinder performance test must be carried out outdoors to test the target and is restricted by weather conditions, the technical survey and daily maintenance are greatl...[Details]
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The National Energy Administration held a press conference on April 29 to release the first quarter energy situation and renewable energy grid operation, and introduced the three actions related to th...[Details]
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Mobile wallet and digital key binding process
When users use car digital keys, they may be bound to mobile wallet APPs. The above is a flowchart drawn based on course materials and the o...[Details]
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As a bridge that connects and schedules software and hardware resources, the operating system is the "soul" component that drives the development of automobiles from low-level intelligence to high-le...[Details]
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Smart card is a modern smart card system consisting of access control management system, attendance management system, patrol management system, consumption management system and parking management s...[Details]
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Third quarter net revenue of $3.25 billion; gross margin of 37.8%; operating margin of 11.7%; net profit of $351 million
Net revenue for the first nine months was $9.95 billion; gro...[Details]
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