#include<reg52.h>
#include<intrins.h>
//以下是本測試程序中所需要載入的液晶模塊、串行EEPROM和鍵盤控制器硬件驅(qū)動(dòng)程序以及系統(tǒng)子程序集
#include<rtx51tny.h>//嵌入RTX51TINY實(shí)時(shí)多任務(wù)操作系統(tǒng)
#include<LCM12864.C>
#include<SysSubs.C>


#define BUTTON_EVENT 0x80

void BUTTONSever(void);

void task0(void) _task_ 0
{	long count=0;
	
	EA=1;
	EX1=1;
	IT1=1;//打開外部中斷源1，作為BUTTON中斷輸入

	LcdInit();
	LcdPutStr_code(1,1,"請按鍵：");
	while(1)
	{	if(os_EventWait()==BUTTON_EVENT)
		{	LcdPutStr_code(2,1,"有效按鍵");
			LcdPutStr_data(2,5,SysInte2Str(++count,-1));
		}
	}
}
/*=======================================================
BUTTON按鍵中斷
========================================================*/
void BUTTONServe(void) interrupt 2
{	unsigned int i=50000;

	EX1=0;//先關(guān)閉外部中斷源1
	
	while(i--){}

	LcdPutStr_code(3,1,"有中斷");

	SysEvent=BUTTON_EVENT;
	isr_send_signal(0);

	EX1=1;//再重新開啟外部中斷源1
}