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Before doing the experiment, let's first understand the basic information of the external interrupts of the 51 core of cc2530. Similarly, we go to the datasheet to find the description of these inter...[Details]
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What is the SVC anomaly? What is the PendSV anomaly? ucos task switching timing? How does ucos meet real-time requirements (implementation)? In ucos, what is the priority of systick? SVC和PendSV...[Details]
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For non-ARM microcontrollers, a timer can also be used to implement a function similar to ARM's systick: blocking delay. void timerX_configYsIT(void) { /*Set the base duration*/ /*Timer disa...[Details]
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In the development process of ARM programs, interrupt handling is very common and very important. The RVCT compiler used by Realview MDK provides the __irq keyword. Functions modified with this keywor...[Details]
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Serial Communication Interface (SCI) SCI asynchronous serial communication: Glossary of terms: IR: InfraRed IrDA: Infrared Design Associate IRQ: Interrupt Request LIN: Local Interconnect Network LSB:...[Details]
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Platforms and tools Operating system: Fedora 23 Development board: Arduino UNO R3 Compiler: avr-gcc Burning software: avrdude main content Installation of avr-gcc and avrdude avr-gcc compilation ...[Details]
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MFRC522 circuit schematic diagram: Antenna part: MCU + MFRC522 test source program is as follows: /**********************RC522 experimental development board routine************************ *...[Details]
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LCMRS EQU P2.4
LCMRW EQU P2.5
LCMEN EQU P2.6
LCMDATA EQU P0
ORG 0000H
LJMP MAIN
ORG 0030H
MAIN:
MOV SP,#60H
LCALL LCMSET
LCALL LCMCLR
MOV A,#80H
LCALL LCMWR0
MOV DPTR,#TAB0
LCALL LCMWR2
MOV A,#0C0H...[Details]
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Interrupts are an important type of system resource, which can play an indispensable role in the operation of hardware. Basically, every hardware will have corresponding interrupts, but it is just...[Details]
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Hardware Connection: program: #include reg52.h #define uint unsigned int #define uchar unsigned char void Delay(uint x) { flying i; while(x--) { for(i=0;i 120;i++); } } void mai...[Details]
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#include pic.h __CONFIG(0x1832); //Chip configuration word, watchdog off, power-on delay on, power-off detection off, low voltage programming off, encryption, 4M crystal HS oscillation //LCD con...[Details]
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When I was reading the data sheet recently, I found that there are 8 types of GPIO configurations in Cortex-M3:
(1) GPIO_Mode_AIN analog input
(2) GPIO_Mode_IN_FLOATING floating input
(3) GPIO_Mod...[Details]
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1. Don't define too many variables. The lower 128 bits are the storage area for user-defined variables (by default). You can also put variables in the upper 128 bits, but it is easy to make mistake...[Details]
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Android is essentially a system based on the Linux kernel, which means that Android is a Linux operating system. However, most of the time, it runs on ARM architecture devices, such as Android phon...[Details]
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There are coprocessors in the processor to assist the processor in completing some functions, mainly for assisting purposes.
Coprocessor:
Coprocessors are used to perform specific process...[Details]
Microcontroller MCU
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