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NVIC, Chinese name Nested Interrupt Vector Controller, is a unique integrated unit inside the Cortex-M3 series controller, which is closely integrated with the CPU, reduces interrupt latency a...[Details]
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In order to monitor the actual signal, a multi-channel data acquisition system with W77E58 microcontroller as the core is designed. The overall structure of the system is introduced, the hardware and...[Details]
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In-Vehicle Infotainment (IVI) is an integrated in-vehicle information processing system that uses a dedicated in-vehicle central processor, based on the vehicle body bus system and Internet service...[Details]
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I have been looking at FMSC information for a long time but it is still vague. it's actually really easy: fsmc is used to expand memory. For example, if we add an sram chip outside the STM32 chi...[Details]
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Different download methods correspond to different STM32 startup methods. The following figure shows three STM32 startup methods: ● The first boot method is the most commonly used user FLASH bo...[Details]
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The previous two articles analyzed the driver architecture of the watchdog timer, and the other one analyzed the probe function corresponding to the platform device. Although the corresponding remove...[Details]
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When writing some programs with some timing, accurate delay time is required. The following is how to calculate the delay using the disassembly of Keil software.
Procedures such as:
void delayns(u...[Details]
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The 10KHz low-speed oscillator inside the microcontroller is greatly affected by temperature. If precise timing is required, please use a 16MHz oscillator or an external crystal oscillator. Approxima...[Details]
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Function: connect the PC keyboard (P/S2 interface) to the 8-bit microcontroller Principle: The keyboard clock is connected to port p3.2, which is the external interrupt int0 of 8051, and the ke...[Details]
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ABC EQU 60H;
ORG 0000H
/*http://www.51hei.com MCU cycle light design - assembly language program writing*/
AJMP START
ORG 0003H ;External interrupt vector address
LJMP INT0;
...[Details]
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【Abstract】This article mainly introduces the circuit design principle and circuit board production method of LED dot matrix Chinese character display screen controlled by 89c51, which is conducive to...[Details]
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Table of contents
1. Header File
2. Interrupt function format
3. Interrupt vector name
4. Design focus of interrupt function
5. Principles of writing ISR in C language
//Note: The GCC-A...[Details]
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51 single chip microcomputer structure: Thinking structure is important: As can be seen from the figure above, the memory of the 51 microcontroller is divided into two parts: program memory ROM and...[Details]
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#include //header file
interrupt void timer0(void) //Timer interrupt service function
{
TCNT0=0xff; // Reset the initial value of TCNT0
PORTD.4 = ~PORTD.4; // PD4 reverse output
}
void...[Details]
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With the continuous improvement of people's living standards, the demand for high-performance water heaters continues to rise. According to market surveys, there are currently two types of electric w...[Details]
Embedded System
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