0 basic learning C language - interrupt

One 、 The concept of interruption

CPU Dealing with an event A when , Another incident happened B Request to be dealt with quickly （ Interruption occurs ）
CPU Temporarily interrupt the current work , Go ahead and deal with the incident B（ Interrupt response and interrupt service ）
stay CPU Put the event B After processing , Back to the original event A Continue to deal with the event where it was interrupted A（ Interrupt return ）, This process is called interruption .

Two 、 Interrupt structure

3、 ... and 、 Interrupt request flag

1. Counter / Interrupt flag of timer control register

2. Serial port interrupt flag

Four 、 Interrupt priority

1. priority

2. Interruption principle

3. Interruption conditions

5、 ... and 、 Interrupt the program

1. Turn on interrupt

2. Write interrupt subfunction

6、 ... and 、 timing / The counter is interrupted

1. timing / The structure of the counter

2. timing / How the counter works

3. timing / Control of counter

1. Working mode register TMOD

Example method 1

2. Control register TCON

1. One of the top four TF0 and TF1 It is automatically controlled by single chip microcomputer , You don't have to worry about
2. TR1
3. TR0
   

4. timing / Counter application

1. Use steps

2. Practical application