Blue Bridge Cup SCM module code (timer) (code + comments)

/* The explanation in the previous chapter will not be repeated */
#include "STC15F2K60S2.H"

typedef unsigned char u8;
typedef unsigned int u16;

u8 count,led;              

void close()
{
  P0=0XFF;
  P2=P2&0X1F|0X80;
  P2=P2&0X1F;
  P0=0;
  P2=P2&0X1F|0XA0;
  P2=P2&0X1F;
}

void open()
{
  ET0=1;
  EA=1;
}
/* Allow timer to interrupt */

void lighten(u8 led)
{
  P0=~led;
  P2=P2&0X1F|0X80;
  P2=P2&0X1F;  
}

void Timer0Init(void)
{
  AUXR &= 0x7F; 
/* register AUXR The first 7 Location 0, Indicates a timer 0 take 12 Frequency division mode */ 
TMOD &= 0xF0;
/* register TMOD low 4 Location 0, Said the use of 16 Bit auto reload mode , Used as a timer , Not subject to INTO Pin control */	
  TL0 = 0x00;		
  TH0 = 0x4C;	
/* Set the initial value */	  
TF0 = 0;	
/* Overflow sign TF0 Zero clearing */	  
TR0 = 1;	
/* Timer 0 Turn on */	
}
/* System frequency 11.0592MHZ Hour timing 50ms, Can pass STC-ISP Automatic generation , Here is a brief explanation , Please refer to the user manual for details 7.1 Other parts , Do not repeat */

void main()
{
  close();
  open();
  Timer0Init();
  while(1)
  {
     lighten(led);  
  }
}

void stop1() interrupt 1
{
  count++;
  if(count==20)
  {
    led++;
	count=0; 
  }
}
/* Every time 1S Parameters led Add one to the value of , Corresponding lighten Within the function LED Light on / off change */

Official schematic diagram , The download address of the user manual is as follows ：

link ：https://pan.baidu.com/s/1y8lRYHxLKojL4_r0PZPYRw 
Extraction code ：19so

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Study notes for undergraduate students of Nanjing University of Information Engineering , For your reference .

If there is a mistake , contact QQ3182097183.