os_arm9_init.c

来自「此文件是硬盘自伺服刻录代码」· C语言 代码 · 共 19 行

/* This file is used to initalized ARM9  */


#include "os_ARM9_Init.h"

void InitTimeTick(INT32U  countdown)
{ 
 *(volatile unsigned *) 0x1000A204 =countdown;      //counter number
 *(volatile unsigned *) 0x1000A200 &=0x0000ffff;
 *(volatile unsigned *) 0x1000A200 |=0x02050000;    //set Timer0 and it's trigger mode-continue
 *(volatile unsigned *) 0x10008000 &=0x0000ffff; 
 *(volatile unsigned *) 0x10008000 |=0x00100000;    //enable timer0 interrupt
 *(volatile unsigned *) 0x1000A814 &=0x0000ffff;
 *(volatile unsigned *) 0x1000A814 |=0x00010000;	//enable timer0 (below)
}

void InitInterrupt(void)
{}