The interrupt method is rather special and requires the use of the interrupt handling mechanism inside the microcontroller and the specification of the interrupt function.
#include
sbit LED = P0^2;
unsigned int vT = 0;
void main()
{
LED = 0;
TMOD = 0x01;
TH0 = 0x3C; // Initial count value 3CB0H = 15536 (65536-15536=50000 * 1us = 50ms)
TL0 = 0xB0;
ET0 = 1; // When EA, IE^1, is equal to 1, request interrupt timer 0 interrupt to be turned on
EA = 1; // General interrupt is turned on
TR0 = 1; // Start timer 0
while(1);
}
void MyInterrupt(void) interrupt 1 // interrupt service routine
{
vT++;
if (vT == 20) // 20 * 50ms = 1000ms = 1s
{
LED = !LED;
vT = 0;
TH0 = 0x3C; // Restore the initial value of the count
TL0 = 0xB0;
}
}
Previous article：MCU timer working mode 1
Next article：Timing working mode 2 realizes 1s timing
- Popular Resources
- Popular amplifiers
ICL7650ITV-1
- Download from the Internet--ARM Getting Started NotesA brief introduction: From today on, the ARM notebook of the rookie is open, and it can be regarded as a place to store these notes. Why publish it? Maybe you are interested in it. In fact, the reason for these notes is ...
- Learn ARM development(22)Turning off and on interrupts Interrupts are an efficient dialogue mechanism, but sometimes you don't want to interrupt the program while it is running. For example, when you are printing something, the program suddenly interrupts and another ...
- Learn ARM development(21)First, declare the task pointer, because it will be used later. Task pointer volatile TASK_TCB* volatile g_pCurrentTask = NULL;volatile TASK_TCB* vol ...
- Learn ARM development(20)With the previous Tick interrupt, the basic task switching conditions are ready. However, this "easterly" is also difficult to understand. Only through continuous practice can we understand it. ...
- Learn ARM development(19)After many days of hard work, I finally got the interrupt working. But in order to allow RTOS to use timer interrupts, what kind of interrupts can be implemented in S3C44B0? There are two methods in S3C44B0. ...
- Learn ARM development(14)
- Learn ARM development(15)
- Learn ARM development(16)
- Learn ARM development(17)
Professor at Beihang University, dedicated to promoting microcontrollers and embedded systems for over 20 years.
- LED chemical incompatibility test to see which chemicals LEDs can be used with
- Application of ARM9 hardware coprocessor on WinCE embedded motherboard
- What are the key points for selecting rotor flowmeter?
- LM317 high power charger circuit
- A brief analysis of Embest's application and development of embedded medical devices
- Single-phase RC protection circuit
- stm32 PVD programmable voltage monitor
- Introduction and measurement of edge trigger and level trigger of 51 single chip microcomputer
- Improved design of Linux system software shell protection technology
- What to do if the ABB robot protection device stops
- Huawei's Strategic Department Director Gai Gang: The cumulative installed base of open source Euler operating system exceeds 10 million sets
- Download from the Internet--ARM Getting Started Notes
- Learn ARM development(22)
- Learn ARM development(21)
- Learn ARM development(20)
- Learn ARM development(19)
- Learn ARM development(14)
- Learn ARM development(15)
- Analysis of the application of several common contact parts in high-voltage connectors of new energy vehicles
- Wiring harness durability test and contact voltage drop test method
- Classic pictures of the past
- Is the intelligent express delivery pickup system based on LabVIEW not too complicated?
- How to implement ship mode in Li-ion battery designs
- Read the good book "The Self-Taught Handbook for Electronic Engineers" - Mastery Edition
- TI E2E Chinese Community celebrates its 8th anniversary, with 8 technical collections for you who love technology!
- What is the function of the DET signal?
- Several issues with the tps65130 chip
- B-U585I-IOT02A Bluetooth problem solved
- Share the November 2018 STMicroelectronics-Shunde Motor Control Roadshow Conference Brochure
- My Journey of MCU Development (V)
京公网安备 11010802033920号