keyboard_driver._c

单片机 mega16L 电池放电器源码

#include <iom8v.h>
#include <macros.h>
#include "discharge.h"
unsigned int key(unsigned char a)
{
 unsigned char pb=0;
 if(a==0)
 {  
    delay_nms(1);
    pb=(~PINB)&0x39;
	a=(pb>>2)|(pb&0x01); 
 }
 return a;
}