DDB/source/bsp/bsp_key.c

#include "bsp_key.h"

void L2_key_init()
{
   D_stdIO_P3(BITN2);
	D_stdIO_P3(BITN3);//准双向口
   D_stdIO_P4(BITN0);
   //初始化为高电平
	Key1 = Key2 = Key3 = 1;
	
}

U8 L2_ReadKey1(void)
{
   Key1 = 1;
   if (Key1 == 0)
   {
      return Key_Down;
   }
   else
   {
      return Key_Up;
   }
}
U8 L2_ReadKey2(void)
{
   Key2 = 1;
   if (Key2 == 0)
   {
      return Key_Down;
   }
   else
   {
      return Key_Up;
   }
}
U8 L2_ReadKey3(void)
{
   Key3 = 1;
   if (Key3 == 0)
   {
      return Key_Down;
   }
   else
   {
      return Key_Up;
   }
}