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Part 4 Memory Instructions: Load and Store ARM uses load/store instructions to read and write memory, which means you can only access memory using LDR and STR instructions. On ARM, data must be loade...[Details]
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Section 6: Low Frequency Frequency Meter
Example purpose: learning timer, counter, interrupt application
Description: Choose a 24MHz crystal, the main frequency can reach 2MHz. Use T1 to generate a ...[Details]
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This system uses MSP430 as the control core to design and produce a sine wave and pulse wave signal source. This experiment is divided into four major modules, namely keyboard scanning module, sine ...[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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A cheap 100KHZ VF converter made of a single IC
Function of the circuit
In the past, when FF converters were mentioned, hybrid integrated components were often used. Howeve...[Details]
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Development environment: MAPLAB X IDE v1.85
Compiler: MPLAB XC 32
1. Instructions for use:
The PIC32 Peripheral Library provides functions and macros for setting up and controlling 32-bit perip...[Details]
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1. SPI interface of AVR microcontroller The SPI (Serial Peripheral INTERFACE) bus system is a synchronous serial peripheral interface that allows the MCU to communicate and exchange data with various...[Details]
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/************************************************** * Description: eeprom writes one byte of data *Parameters: address-address (hexadecimal) data-data ************************************************...[Details]
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1. Choose the right algorithm and data structure.
You should be familiar with the algorithm language and know the advantages and disadvantages of various algorithms. For specific information, please ...[Details]
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Let's start with the simplest problem, using the STM32 external interrupt method to implement the PB.0 button to control the PA.0 LED light: First, let's talk about the steps to implement the interru...[Details]
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Building an arm virtual machine in an X86 environment can simulate the arm environment for development, install corresponding library files in the arm linux file system, compile the arm version, etc....[Details]
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After working, I found that PWM is used in many places. Different voltage outputs are often required in industrial control, which corresponds to changing the hardware circuit and using software to re...[Details]
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1. C51 compiler warning "*** WARNING L1: UNRESOLVED EXTERNAL SYMBOL" -------Reprinted
*** WARNING L1: UNRESOLVED EXTERNAL SYMBOL
SYMBOL: ?C_START
MODULE: .STARTUP.obj (?C_STARTUP)
***...[Details]
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Cortex-M3 supports 256 interrupts, including 16 core interrupts and 240 external interrupts. STM32 has only 84 interrupts, including 16 core interrupts and 68 maskable interrupts. STM32F103 has o...[Details]
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introduce
Many of the Dallas Semiconductor 8051-based microcontrollers support in-system programming through a common RS-232 serial port. In-system programming means that program and/or data memory...[Details]