main.c

基于LPC2148的GPIO简单的Keil程序

#include <LPC214X.H>
typedef unsigned int  uint32;
typedef unsigned char uchar;
void setspeed(uchar M,uchar P)
{
	PLL0CON=1;
	PLL0CFG=(P<<5) | M;	
	PLL0FEED=0xAA;
	PLL0FEED=0x55;
	while(!(PLL0STAT &(1<<10)));
	PLL0CON=3;
	PLL0FEED=0xAA;
	PLL0FEED=0x55;

}
void delay()
{
	unsigned int i;
	for(i=0;i<1000;i++)
	{
	;
	}
}

int main()
{
	uint32 tmp;

	setspeed(1,3);

	PINSEL1=PINSEL1 & 0xfffff3fc;
	tmp =  IODIR0;
	tmp = tmp | 0x00210000;;
	IODIR0 =tmp;
	for(;;)
	{
	IOSET0=IOPIN0 | 0x00210000;
	delay();
	IOCLR0=IOPIN0 | 0x00210000;
	delay();
	}

	return 0;
}