TMOD register:
Let’s talk about the TMOD register. This register can choose to turn on timer 0 or 1, and can also decide how the timer works. As shown in the picture:
Code:
#include sbit LED=P2^0; typedef unsigned char u8; typedef unsigned int u16; void time1_init(void) { TMOD|=0x10; //TMOD is a register used to determine the working mode of the timer. The high four bits determine timer 1. Currently, it is working mode 1, which is 16-bit timing counting. TH1=0xfc; //High eight bits of timer TL1=0x18; //lower eight bits of timer ET1=1; //Interrupt enabled EA=1; //Total interrupt is turned on TR1=1; //Enable timer interrupt } void main(void) { time1_init(); //Initialization while(1) { } } void tmie1(void) interrupt 3 //interrupt service function { static u16 i; //No assignment required, automatically initialized to 0 TH1=0xfc; TL1=0x18; i++; if(i==1000) { i=0; LED=!LED; } } operation result: The result is the same as timer 0, it flashes once per second and no picture is sent.
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