仅仅是巡线程序，程序简单一看就懂的那种#include"led.h"#include"delay.h"#include"key.h"#include"sys.h"#include"beep.h"intmain(void){vu8key=0;delay_init();LED_Init();BEEP_Init();KEY_Init();while(1){if(KEY0==1&&KEY1;==1)