led.c

来自「提供一些ARM7开发源代码」· C语言 代码 · 共 40 行

 //LED_task
 //LED.c data for pooa8
 #include "includes.h"
 #include "ML674000.H"
 #define  bit8  (0x01 << 8)   //PI0A8
 #define  bit5  (0x01 << 5)   //PI0B5

void dealy(unsigned int x); 

void LED_task(void *data)

{
 
 data=data;
 while(1)
 {
 //GPP0A = 0x0100;
 GPP0A |= bit8;        //clr PI0A
 dealy(10);
 // GPP0B = 0x0100;
 GPP0A &= ~bit8;     //enable PI0B8 for out high level
 dealy(10);
 GPP0B |= bit5;      //clr POB5
 dealy(10);
 GPP0B &= ~bit5;    //enable PI0B
 } 
}


 void dealy(unsigned int x)

{

 unsigned int i,j,t;
 for(i =0;i<x;i++)
  for(j=0;j<0xff;j++)   
   for(t=0;t<0xff;t++);     //for 10ms 
}