/*---------------------------------------------------------------------*/
/* --- STC MCU Limited ------------------------------------------------*/
/* --- STC15F4K60S4 系列 INT3下降沿唤醒掉电模式举例--------------------*/
/* --- 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 P0M1 = 0x93;
sfr P0M0 = 0x94;
sfr P1M1 = 0x91;
sfr P1M0 = 0x92;
sfr P2M1 = 0x95;
sfr P2M0 = 0x96;
sfr P3M1 = 0xb1;
sfr P3M0 = 0xb2;
sfr P4M1 = 0xb3;
sfr P4M0 = 0xb4;
sfr P5M1 = 0xC9;
sfr P5M0 = 0xCA;
sfr P6M1 = 0xCB;
sfr P6M0 = 0xCC;
sfr P7M1 = 0xE1;
sfr P7M0 = 0xE2;
sfr INT_CLKO = 0x8F; //外部中断与时钟输出控制寄存器
sbit INT3 = P3^7; //INT3引脚定义
sbit P10 = P1^0;
//-----------------------------------------
//中断服务程序
void exint3() interrupt 11
{
P10 = !P10; //将测试口取反
// INT_CLKO &= 0xDF; //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 |= 0x20; //然后再开中断即可
}
//-----------------------------------------------
void main()
{
P0M0 = 0x00;
P0M1 = 0x00;
P1M0 = 0x00;
P1M1 = 0x00;
P2M0 = 0x00;
P2M1 = 0x00;
P3M0 = 0x00;
P3M1 = 0x00;
P4M0 = 0x00;
P4M1 = 0x00;
P5M0 = 0x00;
P5M1 = 0x00;
P6M0 = 0x00;
P6M1 = 0x00;
P7M0 = 0x00;
P7M1 = 0x00;
INT_CLKO |= 0x20; //(EX3 = 1)使能INT3下降沿中断
EA = 1;
while (1)
{
PCON = 0x02; //MCU进入掉电模式
_nop_(); //掉电模式被唤醒后,首先执行此语句,然后再进入中断服务程序
_nop_();
}
}
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