main.c

来自「实验1 ARM汇编指令实验 实验2 C和汇编语言的混合编程实验 实验3 外部」· C语言 代码 · 共 38 行

#include "2410lib.h"
#include "2410addr.h"
#include "timer.h"
//KEY10->EINT0
void __irq Eint0Handler();

int Main()
{
             
    SetClockDivider(1, 1);
	SetSysFclk(DFT_FCLK_VAL);
	Port_Init();
		
	Uart_Select(0);
	Uart_Init(0, UART_BAUD);
        
	rGPFCON=(rGPFCON|0x01)&0xFFFFFFFE;//GPF0设置为EINT0
    rGPFUP|=0x01;   //disable GPF0 pull up
	
	//设置GPE11为输出0
	rGPECON=(rGPFCON|0xC00000)&0xFF7FFFFF;
	rGPEUP|=0x800;
	rGPEDAT&=0xF7FF;
	
	pISR_EINT0=(unsigned)Eint0Handler;
    rEXTINT0 &= ~(7);	
	rEXTINT0 |=  (2);	//set eint0 falling edge int
    EnableIrq(BIT_EINT0);//开中断
    while(1)
    {     
    Uart_Printf("the main is running\n");
    Delay(500);     
    }
     
}