51 microcontroller learning: timer 1 experiment

Experiment Name: Timer 1 Experiment
Wiring Instructions:
Experiment Phenomenon: After downloading the program, the D1 indicator light flashes at an interval of 1s.
Notes:
************************ *************************************************** *************/
#include "reg52.h"

typedef unsigned int u16; //Redefine the system default data type
typedef unsigned char u8;

//Define LED1 pin
sbit LED1=P2^0;

/****************************************************** ****************************
* Function name: delay_10us
* Function function: Delay function, when ten_us=1, the delay is approximately 10us
* Input: ten_us
* Output: None
**************************************** ***************************************/
void delay_10us(u16 ten_us)
{
while(ten_us --);
}

/****************************************************** ******************************
* Function name: time1_init
* Function function: Timer 1 interrupt configuration function, by setting TH and TL can determine the timing time
* Input: None
* Output: None
************************************ *******************************************/
void time1_init(void)
{
TMOD|=0X10;//Select timer 0 mode, working mode 1
TH1=0XFC; //Assign initial value to timer, timing 1ms
TL1=0X18;
ET1=1;//Turn on timer 1 interrupt enable
EA= 1;//Turn on the total interrupt
TR1=1;//Turn on the timer
}

/****************************************************** ******************************
* Function name: main
* Function function: main function
* Input: None
* Output: None
* *************************************************** ******************************/
void main()
{
time1_init();//Timer 1 interrupt configuration

while(1)
{

}
}

void time1() interrupt 3 //Timer 1 interrupt function
{
static u16 i; //Define static variable i
TH1=0XFC; //Assign initial value to timer, time 1ms
TL1=0X18;
i++;
if(i== 1000)
{
i=0;
LED1=!LED1;
}
}