exp_io.c

S3C2410例子程序

/* 包含文件 */
#include "def.h"
#include "2410lib.h"
#include "option.h"
#include "2410addr.h"
#include "interrupt.h"

#include "coff.h"
#include "hpi.h"

/********************************************************************
// Function name	: Main
// Description	    : JXARM9-2410 数码管显示实验主程序
// Return type		: void
// Argument         : void
*********************************************************************/
void Main(void)
{
	extern unsigned long __input_data;
	extern unsigned long __input_data_end;
	
    unsigned short data;
   	int index;

	/* 配置系统时钟 */
    ChangeClockDivider(1,1);          		// 1:2:4    
    ChangeMPllValue(0xa1,0x3,0x1);    		// FCLK=202.8MHz  
    
    Port_Init();							/* 初始化端口 */
    
    load_coff((unsigned long)(&__input_data), (unsigned long)(&__input_data_end));
    
	while(1)
	{
		for( index = 0; index < 100000; index++);	// 延时
		HPI_WR(0x1000,0x0001);						// 向DSP写1
		for( index = 0; index < 100000; index++);	// 延时
		HPI_WR(0x1000,0x0000);						// 向DSP写0
	}
}