按键点亮LED伴随蜂鸣器

#include <stdio.h> #include <stdlib.h> #include <string.h> #include "mmu.h" #include "typedef.h" //#include "S3C2451_gpio.h" //#include "S3C2451_uart.h" //#include "S3C2451_irq.h" //#include "S3C2451_eint.h" #define Bit(n) (1<<(n)) #define GPBCON (*(volatile int *)0x56000010) #define GPBDAT (*(volatile int *)0x56000014) #define GPFCON (*(volatile int *)0x56000050) #define GPFDAT (*(volatile int *)0x56000054) void delay(unsigned int count) { int j = 1000; int i = 0; while(--j) for(i =count; i > 0; i --); } void Main() { U32 i; //MMU³õʼ»¯£ºÔÚ³ÌÐò×ʼµÄʱºòµ÷Óà MMU_Init(); //³õʼ»¯GPFCON GPFCON &= ~Bit(0); GPFCON &= ~Bit(1); //³õʼ»¯GPBCON GPBCON |= Bit(10); GPBCON &= ~Bit(11); GPBDAT &= ~Bit(5); //delay(12000); //GPBDAT |= Bit(5); while(1){ if((GPFDAT & 0x01) == 0) { //GPBDAT = ~GPBDAT; //·äÃùÆ÷ºÍLED¹²ÓÃGPBDAT //delay(5000); GPBDAT ^= Bit(5); for(i = 0;i < 500000;i++) { GPBDAT |= Bit(0); } GPBDAT &= ~Bit(0); } //delay(50000); } }