80 lines
1.8 KiB
C
80 lines
1.8 KiB
C
#include "H/Function_Init.H"
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void EX_Init(void);
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uchar INT1_flag = 0x00;
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/*****************************************************
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*函数名称：void EXTI_Test(void)
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*函数功能：外部中断测试
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*入口参数：void
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*出口参数：void
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*****************************************************/
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void EXTI_Test(void)
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{
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EX_Init();
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while(1)
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{
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}
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}
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/*****************************************************
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*函数名称：void EX_Init(void)
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*函数功能：外部中断初始化
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*入口参数：void
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*出口参数：void
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*****************************************************/
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void EX_Init(void)
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{
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//配置中断口INT07、INT11/10、INT20/21
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P0CON &= 0X7F; //中断IO口设置为高阻输入
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P0PH |= 0x80; //中断IO口设置为高阻带上拉
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P4CON &= 0XFC; //中断IO口设置为高阻输入
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P4PH |= 0x03; //中断IO口设置为高阻带上拉
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P2CON &= 0XFC; //中断IO口设置为高阻输入
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P2PH |= 0x03; //中断IO口设置为高阻带上拉
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//配置INT07上升沿中断、INT11/10下降沿中断、INT20/21双沿中断
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//下降沿设置
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INT0F = 0X00 ; //0关闭 1使能
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INT1F = 0X03 ; //0关闭 1使能
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INT2F = 0X03 ; //0关闭 1使能
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//上升沿设置
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INT0R = 0X80 ; //0关闭 1使能
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INT1R = 0X00 ; //0关闭 1使能
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INT2R = 0X03 ; //0关闭 1使能
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//外部中断优先级设置
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IE |= 0x05; //外部中断0，1中断使能
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IE1 |= 0x08; //外部中断2中断使能
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IP |= 0X00; //配置中断优先级
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IP1 |= 0X00;
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EA = 1;
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}
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/*****************************************************
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*函数名称：void EX0/1/2() interrupt 0/2/10
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*函数功能：外部中断函数
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*入口参数：void
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*出口参数：void
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*****************************************************/
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void INT0Interrupt() interrupt 0
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{
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P04 = ~P04;
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}
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void INT1Interrupt() interrupt 2
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{
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P05 = ~P05;
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if(P40 == 0)
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{
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INT1_flag = 0x10; //INT10产生中断
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}
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if(P41 == 0)
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{
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INT1_flag = 0x20; //INT11产生中断
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}
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}
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void INT2Interrupt() interrupt 10
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{
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P06 = ~P06;
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}
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