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1. Introduction
An interrupt is when the CPU is processing something, and an external event (such as a level change, a pulse edge, or a timer count overflow) requests the CPU to process it quick...[Details]
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1. Sleep Sleep mode is one of the most common ways to reduce power consumption, but the microcontroller cannot do anything during sleep. For those who fall asleep when there is nothing to do and do...[Details]
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U.S. lawmakers took further steps on Wednesday to try to get Britain to reverse its decision to allow Huawei to build part of the UK's 5G network, Reuters reported. Several top Republican senators ...[Details]
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Hardware Connection: Code: #include reg52.h #include intrins.h #define uchar unsigned char #define uint unsigned int void main() { uchar T_Count = 0; P0 = 0xfe; P2 = 0xfe; TMOD = 0x0...[Details]
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With the breakthrough development and rapid popularization of new generation information technologies such as 5G, big data, and artificial intelligence, automobiles have become technological products...[Details]
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This article introduces a method of measuring temperature using the msp430 microcontroller to replace the relatively backward experimental method of combining thermistors with ammeters in tradition...[Details]
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Abstract: The basic structure and working principle of a novel inrush current limiter (STIL) for offline power converters are introduced. The application circuit in a PFC boost converter and the de...[Details]
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The I2C bus is a two-wire bus used to connect IC devices. It transmits information between devices connected to the bus through two lines, SDA (serial data line) and SCL (serial clock line), and ...[Details]
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1.mdesc- map_io()
start_kernel
-- setup_arch(&command_line);
-- paging_init(mdesc);
-- devicemaps_init(mdesc)
-- mdesc- map_io();
The map_io here can be known fr...[Details]
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Loading a simple module method and steps under Linux:
Operating environment: linux-2.6.12
Compilation environment: arm-linux-gcc (3.4.1)
Operating platform: S3C2440
1. Write the module program ...[Details]
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According to Digitimes, TSMC's 5nm process is still experiencing a huge demand, and heavyweight customers such as Apple, Qualcomm, MediaTek, Nvidia, and Bitmain continue to expand their orders for th...[Details]
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#pragma pack can be used to specify the memory alignment value of the member variables of the data structure. The possible values are: 1, 2, 4, 8, 16. Use the pack directive in pairs to avoid a...[Details]
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The global popularity of electric vehicles will bring about a real technology race, and power batteries will be one of the most important parts of this race. Although this race has just begun, most a...[Details]
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Smart cold chain, direct delivery from the origin to ensure food freshness; smart factory, full automation of management and production; smart air conditioner, you can control it on the way home from...[Details]
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Analysis process:
Program entry
Phase 1 Program Analysis
Second stage program analysis
2440 Development Board:
1.uboot entry:
To see the entry of...[Details]
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