/* Name: Button control 8X8LED dot matrix display
Graphics
Note: Each time K1 is pressed, 8X8LED
The dot matrix screen displays different graphics in a cycle.
This example uses both external interrupts and timers.
Time interruption.
*/
#include
#include
#define uchar unsigned char
#define uint unsigned int
//Graphic code to be displayed
uchar code M[][8]=
{
{0x00,0x7e,0x7e,0x7e,0x7e,0x7e,0x7e,0x00}, //Figure 1
{0x00,0x38,0x44,0x54,0x44,0x38,0x00,0x00}, //Figure 2
{0x00,0x20,0x30,0x38,0x3c,0x3e,0x00,0x00} //Figure 3
};
uchar i,j;
//Main program
void main()
{
P0=0xff;
P1=0xff;
TMOD=0x01; //T0 mode 1
TH0=(65536-2000)/256; //2ms timing
TL0=(65536-2000)%256;
IT0=1; //Falling edge trigger
IE=0x83; //Enable timer 0 and external 0 interrupts
i=0xff; //The initial value of i is set to 0xff, and it will start from 0 after adding 1
while(1);
}[page]
//T0 interrupt controls the dot matrix screen display
void Show_Dot_Matrix() interrupt 1
{
TH0=(65536-2000)/256; //Restore initial value
TL0=(65536-2000)%256;
P0=0xff; //Output bit code and segment code
P0=~M[i][j];
P1=_crol_(P1,1);
j=(j+1)%8;
}
//INT0 interrupt (timer is started by keyboard interrupt)
void Key_Down() interrupt 0
{
P0=0xff;
P1=0x80;
j=0;
i=(i+1)%3; //i takes values from 0, 1, 2, because only 3 graphics are needed
TR0=1;
}
Previous article：Microcontroller C language programming: doorbell designed with timer
Next article：Microcontroller C language programming: 8X8LED dot matrix display digital
- Popular Resources
- Popular amplifiers
EL8170ISZ-T7
- 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)Since development under LINUX is still quite troublesome, is there a more convenient and simple development method under WINDOWS? The answer is yes. Of course, it is not a development tool like ADS, because it ...
- Learn ARM development(15)When using GCC to develop ARM, you will definitely encounter compiler problems. For example, you will encounter various warnings and errors when compiling C code. For example, I encountered several warnings yesterday, so let's take a look at what these warnings are ...
- Learn ARM development(16)There are many things to learn about ARM, and interrupts are definitely something that needs to be learned. Since the CPU introduced interrupts, it has truly entered the multi-tasking system and greatly improved work efficiency. ...
- Learn ARM development(17)Because all embedded systems use interrupts, how does my S3C44B0 interrupt the process? Then I need to understand the whole process. To understand it in depth, the best way is to write a program ...
- Learn ARM development(18)
- Embedded system debugging simulation tool
- A small question that has been bothering me recently has finally been solved~~
- Learn ARM development (1)
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
- 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
- From probes to power supplies, Tektronix is leading the way in comprehensive innovation in power electronics testing
- From probes to power supplies, Tektronix is leading the way in comprehensive innovation in power electronics testing
- Sn-doped CuO nanostructure-based ethanol gas sensor for real-time drunk driving detection in vehicles
- Design considerations for automotive battery wiring harness
- Do you know all the various motors commonly used in automotive electronics?
- Program burning failed
- What op amp circuit is this?
- Serial port idle interrupt cannot be cleared - Solved
- Low power startup (smart toilet development record)
- Share msp430ADC program
- Are there any companies that provide foreign cloud services and APP custom development?
- Live broadcast with awards: When intelligence meets industry, how can technology be implemented?
- [Free Trial] Revolutionize HMI! TI's latest MSP430 development board combination kit, try it out
- How to select the parameters of the RCD circuit resistor in the power supply circuit?
- TI Industrial Month Season 2 - Deep Learning of Technical Solutions
京公网安备 11010802033920号