led.c

三星4510 BOOTLOADER全部源代码

//***************************************************************************************************
//Institute of Automation, Chinese Academy of Sciences
//File Name:	led.c
//Description: 	led test. 
//Author:	Lee JuGuang
//Date:		2004-1-4
//***************************************************************************************************	
#include 	"uart.h"
#include 	"s3c4510b_add.h"


extern void LED_Close(void);
extern void LED_test(void);
static void Delay(unsigned int);

void LED_test(void)
{	
		
	
	unsigned char led[11]={0x0,0xb7,0x06,0x73,0x57,0xc6,0xd5,
		    0xf5,0x07,0xf7,0xd7};
	unsigned int tmp,i;

	tmp=EXTDBWTH;
	EXTDBWTH=0x05503002;
	i=0;
	i_printf("\r\n\r\nLED Test,Press any Key to Continue...\r\n\r\n");
	while(1){
		LED1=led[i];
		LED2=led[i];
		LED3=led[i];
		LED4=led[i];
		Delay(40);
		i++;
		if(i>=11)
			i=0;
		if(kbd_hit())
			{
			LED1=LED2=LED3=LED4=0x0;
			EXTDBWTH=tmp;
			return;
			}
		}
}
//*******************************************************************
void LED_Close(void)
{
	unsigned int tmp;
	tmp=EXTDBWTH;
	EXTDBWTH=0x05503002;
	LED1=LED2=LED3=LED4=0x0;
	EXTDBWTH=tmp;
	return;
}
//*******************************************************************
static void Delay(unsigned int x)
{
	unsigned int i,j,k;
	for(i=0;i<=x;i++)
		for(j=0;j<255;j++)
			for(k=0;k<255;k++);
}