main.c

嵌入式I/O口实验程序

//====================================================================
// File Name : 2410test.c
// Function  : S3C2410 Test Main Menu
// Program   : Shin, On Pil (SOP)
// Date      : May 30, 2002
// Version   : 0.0
// History
//   0.0 : Programming start (February 20,2002) -> SOP
//   1.0 (20020530) : First release for customer
//   1.1 (20020801) : Strata NOR Flash Added and etc. -> SOP
//====================================================================

#include <stdlib.h>
#include <string.h>

#include "def.h"
#include "option.h"
#include "2410addr.h"
#include "2410lib.h"
#include "2410slib.h"

void Led_Display(int data);

//===================================================================
void Main(void)
{
    int i;

    
   
    ChangeClockDivider(1,1);          // 1:2:4    

    ChangeMPllValue(0xa1,0x3,0x1);    // FCLK=202.8MHz  



    Port_Init();							//Init The I/O Port

	while (1)
	{
	    Led_Display(0x0f);					//LED  On
		for (i=0; i<0xfffff; i++);			//Delay
	    Led_Display(0x00);    				//LED  Off
	   	for (i=0; i<0xfffff; i++);			//Delay
    }
    
 
}

//===================================================================
//Active is low.(LED On)
// GPF7  GPF6   GPF5   GPF4
//nLED_1 nLED2 nLED_4 nLED_3
void Led_Display(int data)
{
//    rGPFDAT = (rGPFDAT & 0xf) | !((data & 0xf)<<4);
    rGPFDAT = (rGPFDAT & ~(0xf<<4)) | ((~data & 0xf)<<4);    
}