定时器中断函数找不到定义

Question

//定时器中断函数void Timer2() interrupt 5 {static uchar t;TF2=0;t++;if(t==4) //间隔200ms(50ms*4){ t=0;ds1302_read_time(); dis_time_buf[0]=(time_buf[0]>>4); //年dis_time_buf[1]=(time_buf[0]&0x0f);dis_time_buf[2]=(time_buf[1]>>4);dis_time_buf[3]=(time_buf[1]&0x0f);dis_time_buf[4]=(time_buf[2]>>4); //月dis_time_buf[5]=(time_buf[2]&0x0f);dis_time_buf[6]=(time_buf[3]>>4); //日dis_time_buf[7]=(time_buf[3]&0x0f);dis_time_buf[14]=(time_buf[7]&0x07); //星期dis_time_buf[8]=(time_buf[4]>>4); //时dis_time_buf[9]=(time_buf[4]&0x0f);dis_time_buf[10]=(time_buf[5]>>4); //分dis_time_buf[11]=(time_buf[5]&0x0f);dis_time_buf[12]=(time_buf[6]>>4); //秒dis_time_buf[13]=(time_buf[6]&0x0f);}}void Init_timer2(void) {RCAP2H=0x3c;RCAP2L=0xb0;TR2=1; //启动定时器2ET2=1; //打开定时器2 中断EA=1; //打开总中断}
未找到定义TF2 TR2 EA等