LPC1114_外部中断程序_MDK编译环境

#include "LPC11XX.h"

#include "gpio.h"

#include "timer16.h"

#include "main.h"

#include "Key.h"

#include "LCD.h"

void Delay_Sec(unsigned char Time) //1s*Time延时函数

{

u16 i;

while(Time)

{

for(i=0;i<3000000;i++);

Time--;

}

}

void Delay_Ms(unsigned int Time) //1Ms*Time延时函数

{

u16 i;

while(Time)

{

for(i=0;i<3000;i++);

Time--;

}

}

void Delay_Us(unsigned int Time) //1Us*Time延时函数

{

u8 i;

while(Time)

{

for(i=0;i<3;i++);

Time--;

}

}

int main(void)

{

//SystemInit(); //系统初始化--主要是设置主时钟

//GPIOInit(); //IO口初始化--主要是开启GPIO时钟

//GPIOSetDir( 0, 3, 1 ); //设置P0.3为输出(LPC1114单片机，输出需设置为1，输入需设置为0)

LPC_GPIO0->DIR |= (0x1<3); //设置P0.3为输出

LPC_GPIO2->DIR |= (0x1<9);

Key_GPIO_Init();

Key_Intrrupt_Init();

while(1)

{

//GPIOSetValue( 0, 3, 0 ); //给P0.3位写0

//LPC_GPIO0->DATA &= ~(0x1<3); //给P0.3位写0

LCD_RW_High;

//for(i=0;i<0xFFFFF;i++); //延时

Delay_Ms(100); //延时

//GPIOSetValue( 0, 3, 1 ); //给P0.3位写1

//LPC_GPIO0->DATA |= (0x1<3); //给P0.3位写1

LCD_RW_Low;

//for(i=0;i<0xFFFFF;i++); //延时

Delay_Ms(100); //延时

}

}

key.c

#include "LPC11XX.h"

#include "gpio.h"

#include "main.h"

#include "Key.h"

void Key_GPIO_Init(void)

{

LPC_GPIO1->DIR &= ~(0x1<8); //设置P1.8为输入

}

void Key_Intrrupt_Init(void)

{

/*********配置中断*********/

GPIOSetInterrupt(1,8,1,0,0); //P1.8低电平触发中断

/*********使能中断*********/

GPIOIntEnable(1,8);

/*********使能中断入口*********/

NVIC_EnableIRQ(EINT1_IRQn);

}

gpio.c

#include "LPC11xx.h" /* LPC11xx Peripheral Registers */

#include "gpio.h"

void PIOINT1_IRQHandler(void)

{

uint32_t regVal;

gpio1_counter++;

regVal = GPIOIntStatus( 1, 8 );

if ( regVal )

{

LPC_GPIO0->MASKED_ACCESS[(1<3)] = (0<3);

Delay_Ms(2000);

LPC_GPIO0->MASKED_ACCESS[(1<3)] = (1<3);

Delay_Ms(2000);

LPC_GPIO0->MASKED_ACCESS[(1<3)] = (0<3);

Delay_Ms(2000);

LPC_GPIO0->MASKED_ACCESS[(1<3)] = (1<3);

Delay_Ms(2000);

//GPIOSetValue( 0, 3, 0 ); //给P0.3位写0

//Delay_Ms(1000);

//GPIOSetValue( 0, 3, 1 ); //给P0.3位写0

//Delay_Ms(1000);

GPIOIntClear( 1, 8 );

}

return;

}