This program has passed the circuit test. The circuit is very simple. Connect eight lights to port p1 and a button to port p2.0.
Keywords：MCU
Reference address：MCU Assembly Language - Button Control LED Light Flashing 5 Times
The running effect is that the eight lights flash 5 times after the button is pressed once.
The program source code is as follows:
ORG 00H
start:mov r0,#5
loop: mov p1,#00h;
; clr p1;
call delay;
mov p1,#0ffh;
; sept p1.0;
call delay ;
djnz r0,loop
jb p2.0,$
jmp start;
DELAY: MOV R5,#20; Delay subroutine, delay 0.2 seconds
D1: MOV R6,#20
D2: MOV R7,#248
DJNZ R7,$
DJNZ R6,D2
DJNZ R5,D1
RIGHT
END
END
Complete source code project files and hex file download: http://www.51hei.com/f/ledanjian.rar
Previous article：Programming of 8259A: Count the number of interrupt requests until all ten lights are off
Next article：Detailed explanation of the independent buttons of the microcontroller
- Popular Resources
- Popular amplifiers
THS4501CDGKT
Recommended Content
Latest Microcontroller Articles
- 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)
He Limin Column
Microcontroller and Embedded Systems Bible
Professor at Beihang University, dedicated to promoting microcontrollers and embedded systems for over 20 years.
MoreSelected Circuit Diagrams
MorePopular Articles
- 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
MoreDaily News
- Car key in the left hand, liveness detection radar in the right hand, UWB is imperative for cars!
- After a decade of rapid development, domestic CIS has entered the market
- Aegis Dagger Battery + Thor EM-i Super Hybrid, Geely New Energy has thrown out two "king bombs"
- A brief discussion on functional safety - fault, error, and failure
- In the smart car 2.0 cycle, these core industry chains are facing major opportunities!
- The United States and Japan are developing new batteries. CATL faces challenges? How should China's new energy battery industry respond?
- Murata launches high-precision 6-axis inertial sensor for automobiles
- Ford patents pre-charge alarm to help save costs and respond to emergencies
- New real-time microcontroller system from Texas Instruments enables smarter processing in automotive and industrial applications
- Sandia Labs develops battery failure early warning technology to detect battery failures faster
Guess you like
- [SC8905 EVM Evaluation] + Use of the setting tool SC9805tool
- [IDE] Does IAR have a function module similar to Keil's RTE?
- FPGA Learning Experience
- The best NUCLEO-G474RE has arrived
- I don't know if it counts as a benefit. LIS3DHTR
- What to do if the Quartus II driver is incompatible with the laptop blue screen?
- Working principle and function of encoder
- Could you please tell me what is the function of DDB file in PROTEL99? Are sch files and PCB files placed in the DDB file?
- NIWEEK is now NI Connect, join us online! Sign up now
- 【AT-START-F425 Review】Virtual Serial Port Test
京公网安备 11010802033920号