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I want to transplant uboot1.4 to the board, but I failed after a long time. I am determined to understand the principle and process of uboot, so I decided to write a simple bootloader to sort out w...[Details]
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Near-infrared light refers to electromagnetic waves with a wavelength in the range of 780 to 2500nm, which belongs to the non-visible light region. It is customary to divide near-infrared light in...[Details]
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Working status of ARM processor In the ARM architecture, it can work in three different states: ARM state, Thumb state and Thumb-2 state, and debug state. The Embedded System Development and Applic...[Details]
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ram_nor.c source code: //Reference: drivers\mtd\chips\map_ram.c #include "linux/module.h" #include "linux/types.h" #include "linux/kernel.h" #include "linux/sched.h" #include "linux/init.h" #include...[Details]
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Are you like me? If you drive to an unfamiliar place, you will take out your mobile phone and open the online map for navigation before setting off. Car navigation has long been out of favor due to...[Details]
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There are many methods to measure the degree of insulator pollution, such as equivalent salt density, conductivity of pollution layer, surface conductivity, leakage current, pollution flashover voltag...[Details]
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1. Introduction
At present, the multi-microcomputer system composed of single-chip microcomputer and PC through serial interface has been widely used in industrial control, environmental monit...[Details]
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I added oled here to display temperature and humidity, using STC15, dht11 modules #include STC15.H #include "intrins.h" // used to provide _nop_(); function #include "OLED_Contrul_Hygrothermograp...[Details]
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4G changes life, 5G changes society, but this change is not that easy.
2020 is the first year of global 5G commercialization defined by the ITU, and China will be one year earlier. A...[Details]
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The SMBus of C8051F020 is compatible with I2C, so it is easy to connect multiple I2C devices, as shown below:
Master transmitter mode:
Master Receiver Mode:
SMB0STA:
bit SM_B...[Details]
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This article introduces Silicon Labs' new Precision32 microcontroller product. This is the company's first 32-bit MCU. In addition to an ARM-compatible CPU, the chip also integrates USB and multipl...[Details]
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On New Year's Day 2021, Tesla announced the price of its China-made Model Y, with a starting price of RMB 339,900, a reduction of RMB 148,100 from the previously announced pre-sale price of RMB 488,0...[Details]
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What is an interrupt routine?
A vivid metaphor is like you are reading my article now, and suddenly your friend asks you to go roast sweet potatoes together. At this time, you interrupt reading the...[Details]
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The Kyoto Protocol was established in 1997 to solve the problem of climate change. The Kyoto Protocol will expire in 2012. Looking around the world, fossil fuels are still used in large quantities,...[Details]
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When using GCC to develop ARM, you will definitely encounter compiler problems. For example, you will encounter various warnings and errors when compiling C code. For example, I encountered several...[Details]
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