没有IT2
- /*---------------------------------------------------------------------*/
- /* --- STC MCU Limited ------------------------------------------------*/
- /* --- STC15W401AS 系列 INT2中断举例----------------------------------*/
- /* --- Mobile: (86)13922805190 ----------------------------------------*/
- /* --- Fax: 86-0513-55012956,55012947,55012969 ------------------------*/
- /* --- Tel: 86-0513-55012928,55012929,55012966-------------------------*/
- /* 如果要在程序中使用此代码,请在程序中注明使用了STC的资料及程序 */
- /* 如果要在文章中应用此代码,请在文章中注明使用了STC的资料及程序 */
- /*---------------------------------------------------------------------*/
- //本示例在Keil开发环境下请选择Intel的8058芯片型号进行编译
- //若无特别说明,工作频率一般为11.0592MHz
- #include "reg51.h"
- #include "intrins.h"
- //-----------------------------------------------
- sfr P1M1 = 0x91;
- sfr P1M0 = 0x92;
- sfr P2M1 = 0x95;
- sfr P2M0 = 0x96;
- sfr P3M1 = 0xb1;
- sfr P3M0 = 0xb2;
- sfr P5M1 = 0xC9;
- sfr P5M0 = 0xCA;
- sfr INT_CLKO = 0x8f; //外部中断与时钟输出控制寄存器
- sbit P10 = P1^0;
- //-----------------------------------------------
- //中断服务程序
- void exint2() interrupt 10 //INT2中断入口
- {
- P10 = !P10; //将测试口取反
-
- // INT_CLKO &= 0xEF; //若需要手动清除中断标志,可先关闭中断,此时系统会自动清除内部的中断标志
- // INT_CLKO |= 0x10; //然后再开中断即可
- }
- void main()
- {
- P1M0 = 0x00;
- P1M1 = 0x00;
- P2M0 = 0x00;
- P2M1 = 0x00;
- P3M0 = 0x00;
- P3M1 = 0x00;
- P5M0 = 0x00;
- P5M1 = 0x00;
- INT_CLKO |= 0x10; //(EX2 = 1)使能INT2中断
- EA = 1;
- while (1);
- }
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