//按键处理voidkeyProc(void){ staticunsignedintCnt=0,KEY=0; if((GPIO_ReadInputData(GPIOA)&0xF000)!=0xF000)//按下时刻：判断GPIOA口是否有一个或多个按键按下 { Cnt+=1; KEY=GPIO_ReadInputData(GPIOA); if(Menu==5)//当Menu==5且GPIO_