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Although LED technology is the mainstream of today's market, there are still many unsolved problems in LED technology, and the lifespan, energy saving and price of LED have always been topics that eve...
Introduction: June 7, 2006, is the first anniversary of Xiao Jie's college entrance examination. Looking at the real questions of this year's college entrance examination essay, recalling his life in ...
[i=s]This post was last edited by EETUX on 2018-7-6 10:08[/i] Because the symbol table is needed, first recompile the micropython firmware and modify the makefile to remove the -fdata-sections -ffunct...
: [align=left]If you need any article, click the link [b]https://ezchina.analog.com/thread/17479[/b] to pick it up~ [/align][align=left]System Solution Selection APM[/align][align=left]· Networked Mot...
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When first learning microcontrollers, people usually buy learning boards, but later find them inconvenient to use. So, I decided to make my own minimum system board. First, we need to know what's i...[Details]
Written in Keil4, it always gives an error. What is the problem?
Code:
#include reg52.h
#define seg P0 //digital tube segment selection
#define bitt P...[Details]
Specific implementation functions
(1) The first line of the LCD1602 displays the current light value, and the second line displays the current temperature and humidity values. (2) The upper an...[Details]
Led can be used as a tool for me to debug the program.
OK6410 core board schematic diagram: Partial screenshot of LED:
We know from the schematic diagram above that LED1-4 correspon...[Details]
I want to emphasize again that other solutions to this problem on the Internet are based on other versions of u-boot. I have tried other methods but failed to solve this problem. It may be because ...[Details]
Overview of arm and its basic programming model
Versions and naming methods of
arm architecture Features of the 6 versions of
arm architecture Variants of the arm
system
1 thum...[Details]
Documents involved
/etc/init.d/rcS: The script file that will be started after booting up, which will set global variables, mount files, create directories, and start some scripts and processe...[Details]
Chips (such as 2440, 6410, 210, etc.) contain ARM cores.
The instruction structure is related to the ARM core:
ARM9 corresponds to the instruction architecture version ARMV4
AR...[Details]
1. ARM machine code
Disassembling the elf format file can get the machine code of the corresponding assembly file:
arm-linux-objdump -D -S start.elf
For machine code analysis, ...[Details]
1. The role of bootloader
2. u-boot is the leader in the bootloader industry
u-boot is divided into autonomous mode and development mode
3. Create a U-boot project
u...[Details]
1. Starting method
s3c2440: It can be booted from Nor flash, which is usually 2MB; it can also be booted from Nandflash, which is usually 256MB. We usually put our uboot, kernel and file syste...[Details]
1. Download the kernel source code linux-2.6.34 and unzip it to the working directory.
2. First add a SOC to the kernel, copy mach-smdk6410.c to mach-ok6410.c under /arch/arm/mach-s3c64xx
...[Details]
PCB Design
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