smartarm.c

这是别人发的LPC2210的BSP

#include "mytypes.h"
#include "lpc2210.h"
#include "smartarm.h"

void IRQ_Eint3(void)
{
    DWORD  i = IO0PIN;                          /* 读取当前B1控制值*/
						
    if( (i&BEEPCON)==0 )				/* 控制B1输出取反    */
    {          
        IO0SET = BEEPCON;    
    }    
    else
    {
        IO0CLR = BEEPCON;    
    }    
    EXTINT = 0x08;
}