蓝桥杯第八届嵌入式程序

其他 2019-10-26 10:29:31 阅读次数: 0
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本文链接： https://blog.csdn.net/qqGHJ/article/details/88049172

本届试题虽说用到的模块较简单，但是逻辑却较为复杂；其中涉及多个变量，才可以将功能完整的实现，笔者也是参考大神程序的。

①、库文件

②、初始化

#include "stm32f10x.h"
#include "lcd.h"
#include <stdio.h>
#include "init.h"

void GPIO_Int(void)
{

	GPIO_InitTypeDef GPIO_InitStructure;

	

	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD , ENABLE);
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB , ENABLE);
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);



  //LED
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10| GPIO_Pin_11 | GPIO_Pin_12| GPIO_Pin_13 | GPIO_Pin_14|GPIO_Pin_15;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
    GPIO_Init(GPIOC, &GPIO_InitStructure);

	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
    GPIO_Init(GPIOD, &GPIO_InitStructure);

	

	//KEY

	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_8;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1 | GPIO_Pin_2;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
    GPIO_Init(GPIOB, &GPIO_InitStructure);

	GPIO_SetBits(GPIOC,GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10| GPIO_Pin_11 | GPIO_Pin_12| GPIO_Pin_13 | GPIO_Pin_14|GPIO_Pin_15);
	GPIO_SetBits(GPIOD,GPIO_Pin_2);
	GPIO_ResetBits(GPIOD,GPIO_Pin_2);

	//rtc						  //注意，les全部替换为lsi 否则无法运行
	/* Allow access to BKP Domain */
  PWR_BackupAccessCmd(ENABLE);

  /* Reset Backup Domain */
  BKP_DeInit();

  /* Enable LSE */
   RCC_LSICmd(ENABLE);
  /* Wait till LSE is ready */
  while (RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET)
  {}

  /* Select LSE as RTC Clock Source */
  RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI);

  /* Enable RTC Clock */
  RCC_RTCCLKCmd(ENABLE);

  /* Wait for RTC registers synchronization */
  RTC_WaitForSynchro();

  /* Wait until last write operation on RTC registers has finished */
  RTC_WaitForLastTask();

  /* Enable the RTC Second */
  RTC_ITConfig(RTC_IT_SEC, ENABLE);

  /* Wait until last write operation on RTC registers has finished */
  RTC_WaitForLastTask();

  /* Set RTC prescaler: set RTC period to 1sec */
  RTC_SetPrescaler(39999); 

  /* Wait until last write operation on RTC registers has finished */
  RTC_WaitForLastTask();


  RTC_SetCounter(HH*3600+MM*60+SS);
  RTC_WaitForLastTask();
  
   NVIC_Configuration();

   

  








}

void TIM3_Init(uint16_t Fre,uint16_t CCR1_Val,uint16_t CCR2_Val)
{

	GPIO_InitTypeDef GPIO_InitStructure;

	TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
	TIM_OCInitTypeDef  TIM_OCInitStructure;

	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO, ENABLE);
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);

   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

   GPIO_Init(GPIOA, &GPIO_InitStructure);


   /* Time base configuration */
  TIM_TimeBaseStructure.TIM_Period = Fre;
  TIM_TimeBaseStructure.TIM_Prescaler = 71;
  TIM_TimeBaseStructure.TIM_ClockDivision = 0;
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;

  TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);

  /* PWM1 Mode configuration: Channel1 */
  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM_Pulse = CCR1_Val;
  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;

  TIM_OC1Init(TIM3, &TIM_OCInitStructure);

  TIM_OC1PreloadConfig(TIM3, TIM_OCPreload_Enable);

  /* PWM1 Mode configuration: Channel2 */
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM_Pulse = CCR2_Val;

  TIM_OC2Init(TIM3, &TIM_OCInitStructure);

  TIM_OC2PreloadConfig(TIM3, TIM_OCPreload_Enable);

  

  TIM_ARRPreloadConfig(TIM3, ENABLE);

  /* TIM3 enable counter */
  TIM_Cmd(TIM3, ENABLE);



}




void NVIC_Configuration(void)
{
  NVIC_InitTypeDef NVIC_InitStructure;

  /* Configure one bit for preemption priority */
  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);

  /* Enable the RTC Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = RTC_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
}

void LCD_Init(void)
{
    STM3210B_LCD_Init();
	LCD_Clear(Blue);
	LCD_SetBackColor(Blue);
	LCD_SetTextColor(White);
	
	SysTick_Config(SystemCoreClock/1000);


	LCD_DisplayStringLine(Line0,"                    ");	
	LCD_DisplayStringLine(Line1,"     Now Flat       ");	
	LCD_DisplayStringLine(Line2,"                    ");
    LCD_DisplayStringLine(Line3,"                    ");
	LCD_DisplayStringLine(Line4,"         1          ");	
	LCD_DisplayStringLine(Line5,"     12: 50: 55     ");
	LCD_DisplayStringLine(Line6,"                    ");
	LCD_DisplayStringLine(Line7,"                    ");	
	LCD_DisplayStringLine(Line8,"                    ");
	LCD_DisplayStringLine(Line9,"                    ");	
	


}

③、中断服务函数

void RTC_IRQHandler(void)
{
  if (RTC_GetITStatus(RTC_IT_SEC) != RESET)
  {
    /* Clear the RTC Second interrupt */
    RTC_ClearITPendingBit(RTC_IT_SEC);

    

    /* Enable time update */
    TimeDisplay = 1;

    /* Wait until last write operation on RTC registers has finished */
    RTC_WaitForLastTask();
    
  }
}

④、主函数

#include "stm32f10x.h"
#include "lcd.h"
#include <stdio.h>
#include "init.h"


u32 TimingDelay = 0;
 __IO uint32_t TimeDisplay = 0;;
u8 string[20];
u8 Flat1=0,Flat2=0,Flat3=0,Flat4=0,Now_Flat=1;
u32 key_ms=100000000;
u16 led=0xffff;
u8 key_flag=1;
u8 Scan_Up_Flag=0,Scan_Down_Flag=0;
u8 Door_State_Flag=1; //默认门是开着的
u8 i=0; 

u32 Door_Close_Ms=100000000;
u32 Door_Open_ms=100000000;
u32 Lift_Motor_Ms=100000000;

u8 Door_Closefinish_flag=0;


u8 LED_FlowDown_Flag=0;
u8 LED_FlowUp_Flag=0;
u8 LED_FlowUp_ms=0;
u8 Arrive_Floor_flag=0;
u8 Stop_flag=0;
u32 Door_Wait_ms=1000000;
u8 Door_Wait_flag=0;

u8 LCD_FloorTurn_nTime=0;
u32 LCD_FloorTurn_ms=0;
u8 LED_FlowDown_ms=0;



#define Lift_Up      999,799,0
#define Lift_Down    999,599,0
#define Door_Open	 499,0,299
#define Door_Close 	 499,0,249
#define All_Stop	 499,0,0


u16 LEDn[4]={0X1000,0X2000,0X4000,0X8000};	   //上行流水灯
u16 LEDn2[4]={0X8000,0X4000,0X2000,0X1000};	//下行 流水灯


void Delay_Ms(u32 nTime);
void LCD_Init(void);
void GPIO_Int(void);
void KEY_Scan(void);
void Time_Display(uint32_t TimeVar);
void LED_Run(void);
void LED_Flow_Close(void);





int main(void)
{
  SysTick_Config(SystemCoreClock/1000);

 LCD_Init();
 GPIO_Int();
 
//  TIM3_Init(999,799,0) ;//上行
//  Delay_Ms(1000);
//  TIM3_Init(999,599,0);	 //下行
//  Delay_Ms(1000);
//  TIM3_Init(499,0,299); //开门
//  Delay_Ms(1000);
//  TIM3_Init(499,0,249);	 //关门
//  Delay_Ms(1000);
//  TIM3_Init(499,0,0);	//停止
//  Delay_Ms(1000);

 


  while (1)
  {
	 if(key_flag==1) {KEY_Scan();}


	 if (TimeDisplay == 1)
    {
      /* Display current time */
      Time_Display(RTC_GetCounter());
      TimeDisplay = 0;
    }

	 if(Scan_Up_Flag==1)//电梯向上运行
	 {
	   if((Flat2==1)&&(Now_Flat<2))	
	   {
				   	  if(Door_State_Flag==1)	   //关门
					  {
					  	 Door_State_Flag=0;
						 TIM3_Init(Door_Close);	 //升降机关门
						 GPIO_ResetBits(GPIOA, GPIO_Pin_5);	
						 Door_Close_Ms=4000;
					  }
			
					  if(Door_Closefinish_flag==1)	//		 上行
					  {
					  	Door_Closefinish_flag=0;
						TIM3_Init(Lift_Up);		//上行
						GPIO_ResetBits(GPIOA, GPIO_Pin_4);
						Lift_Motor_Ms=(2-Now_Flat)*6000;
						LED_FlowUp_Flag=1;
						LED_FlowUp_ms=200;	
					  }
			
					  if(Arrive_Floor_flag==1) //开门
					  {
					   Arrive_Floor_flag=0;
					   LED_FlowUp_Flag=0;	 //关流水灯
					   LED_Flow_Close();
					   TIM3_Init(Door_Open);
					   GPIO_SetBits(GPIOA, GPIO_Pin_5);	
					   Door_Open_ms=4000;
					  
					  }
					  if(Stop_flag==1)	  //开门等待
					  {
					  	 Stop_flag=0;
						 TIM3_Init(All_Stop);
						 Door_Wait_ms=2000;
					  }
			
					  if(Door_Wait_flag==1)	 //停止运行
					  {
					  	   Door_Wait_flag=0;
						   Flat2=0;
						   led|=GPIO_Pin_9;
						   LED_Run();
						   Now_Flat=2;
						   Door_State_Flag=1;
			
						   	LCD_DisplayStringLine(Line4,(unsigned char *)"         2          ");
						    LCD_FloorTurn_nTime=1;LCD_FloorTurn_ms=500;
					  }

		   }

		  else if((Flat3==1)&&(Now_Flat<3))	
	   {
			   	  if(Door_State_Flag==1)	   //关门
				  {
				  	 Door_State_Flag=0;
					 TIM3_Init(Door_Close);	 //升降机关门
					 GPIO_ResetBits(GPIOA, GPIO_Pin_5);	
					 Door_Close_Ms=4000;
				  
				  }
		
				  if(Door_Closefinish_flag==1)	//		 上行
				  {
				  	Door_Closefinish_flag=0;
					TIM3_Init(Lift_Up);		//上行
					GPIO_ResetBits(GPIOA, GPIO_Pin_4);
					Lift_Motor_Ms=(3-Now_Flat)*6000;
					LED_FlowUp_Flag=1;
					LED_FlowUp_ms=200;	
				  
				  }
		
				  if(Arrive_Floor_flag==1) //开门
				  {
				   Arrive_Floor_flag=0;
				   LED_FlowUp_Flag=0;	 //关流水灯
				   LED_Flow_Close();
				   TIM3_Init(Door_Open);
				   GPIO_SetBits(GPIOA, GPIO_Pin_5);	
				   Door_Open_ms=4000;
				  
				  }
				  if(Stop_flag==1)	  //开门等待
				  {
				  	 Stop_flag=0;
					 TIM3_Init(All_Stop);
					 Door_Wait_ms=2000;
				  }
		
				  if(Door_Wait_flag==1)	 //停止运行
				  {
				  	   Door_Wait_flag=0;
					   Flat3=0;
					   led|=GPIO_Pin_10;
					   LED_Run();
					   Now_Flat=3;
					   Door_State_Flag=1;
		
					   	LCD_DisplayStringLine(Line4,(unsigned char *)"         3          ");
					    LCD_FloorTurn_nTime=1;LCD_FloorTurn_ms=500;
				  
				  }
		 }

		  else if((Flat4==1)&&(Now_Flat<4))	
	   {
				   	  if(Door_State_Flag==1)	   //关门
					  {
					  	 Door_State_Flag=0;
						 TIM3_Init(Door_Close);	 //升降机关门
						 GPIO_ResetBits(GPIOA, GPIO_Pin_5);	
						 Door_Close_Ms=4000;
					  
					  }
			
					  if(Door_Closefinish_flag==1)	//		 上行
					  {
					  	Door_Closefinish_flag=0;
						TIM3_Init(Lift_Up);		//上行
						GPIO_ResetBits(GPIOA, GPIO_Pin_4);
						Lift_Motor_Ms=(4-Now_Flat)*6000;
						LED_FlowUp_Flag=1;
						LED_FlowUp_ms=200;	
					  
					  }
			
					  if(Arrive_Floor_flag==1) //开门
					  {
					   Arrive_Floor_flag=0;
					   LED_FlowUp_Flag=0;	 //关流水灯
					   LED_Flow_Close();
					   TIM3_Init(Door_Open);
					   GPIO_SetBits(GPIOA, GPIO_Pin_5);	
					   Door_Open_ms=4000;
					  
					  }
					  if(Stop_flag==1)	  //开门等待
					  {
					  	 Stop_flag=0;
						 TIM3_Init(All_Stop);
						 Door_Wait_ms=2000;
					  }
			
					  if(Door_Wait_flag==1)	 //停止运行
					  {
					  	   Door_Wait_flag=0;
						   Flat4=0;
						   led|=GPIO_Pin_11;
						   LED_Run();
						   Now_Flat=4;
						   Door_State_Flag=1;
			
						   	LCD_DisplayStringLine(Line4,(unsigned char *)"         4          ");
						    LCD_FloorTurn_nTime=1;LCD_FloorTurn_ms=500;
			
			
					  
					  
					  }
	   
	   }
	   else 
			{
				Scan_Up_Flag=0;Scan_Down_Flag=1;
			}
	 
	 }




	   if(Scan_Down_Flag==1)
	   {
	   	 if((Flat3==1)&&(Now_Flat>3))	
	   {
		   	  if(Door_State_Flag==1)	   //关门
			  {
			  	 Door_State_Flag=0;
				 TIM3_Init(Door_Close);	 //升降机关门
				 GPIO_ResetBits(GPIOA, GPIO_Pin_5);	
				 Door_Close_Ms=4000;
			  
			  }
	
			  if(Door_Closefinish_flag==1)	//		 下行
			  {
			  	Door_Closefinish_flag=0;
				TIM3_Init(Lift_Down);		//下行
				GPIO_ResetBits(GPIOA, GPIO_Pin_4);
				Lift_Motor_Ms=(Now_Flat-3)*6000;
				LED_FlowDown_Flag=1;
				LED_FlowDown_ms=200;	
			  
			  }

				  if(Arrive_Floor_flag==1) //开门
				  {
				   Arrive_Floor_flag=0;
				   LED_FlowDown_Flag=0;	 //关流水灯
				   LED_Flow_Close();
				   TIM3_Init(Door_Open);
				   GPIO_SetBits(GPIOA, GPIO_Pin_5);	
				   Door_Open_ms=4000;
				  
				  }
				  if(Stop_flag==1)	  //开门等待
				  {
				  	 Stop_flag=0;
					 TIM3_Init(All_Stop);
					 Door_Wait_ms=2000;
				  }
		
				  if(Door_Wait_flag==1)	 //停止运行
				  {
				  	   Door_Wait_flag=0;
					   Flat3=0;
					   led|=GPIO_Pin_10;
					   LED_Run();
					   Now_Flat=3;
					   Door_State_Flag=1;
		
					   	LCD_DisplayStringLine(Line4,(unsigned char *)"         3          ");
					    LCD_FloorTurn_nTime=1;LCD_FloorTurn_ms=500;
		
		
				  
				  
				    }

			}

				  else if((Flat2==1)&&(Now_Flat>2))	
			   {
			   	  if(Door_State_Flag==1)	   //关门
				  {
				  	 Door_State_Flag=0;
					 TIM3_Init(Door_Close);	 //升降机关门
					 GPIO_ResetBits(GPIOA, GPIO_Pin_5);	
					 Door_Close_Ms=4000;
				  
				  }
		
				  if(Door_Closefinish_flag==1)	//		 下行
				  {
				  	Door_Closefinish_flag=0;
					TIM3_Init(Lift_Down);		//下行
					GPIO_ResetBits(GPIOA, GPIO_Pin_4);
					Lift_Motor_Ms=(Now_Flat-2)*6000;
					LED_FlowDown_Flag=1;
					LED_FlowDown_ms=200;	
				  
				  }
		
				  if(Arrive_Floor_flag==1) //开门
				  {
				   Arrive_Floor_flag=0;
				   LED_FlowDown_Flag=0;	 //关流水灯
				   LED_Flow_Close();
				   TIM3_Init(Door_Open);
				   GPIO_SetBits(GPIOA, GPIO_Pin_5);	
				   Door_Open_ms=4000;
				  
				  }
				  if(Stop_flag==1)	  //开门等待
				  {
				  	 Stop_flag=0;
					 TIM3_Init(All_Stop);
					 Door_Wait_ms=2000;
				  }
		
				  if(Door_Wait_flag==1)	 //停止运行
				  {
				  	   Door_Wait_flag=0;
					   Flat2=0;
					   led|=GPIO_Pin_9;
					   LED_Run();
					   Now_Flat=2;
					   Door_State_Flag=1;
		
					   	LCD_DisplayStringLine(Line4,(unsigned char *)"         4          ");
					    LCD_FloorTurn_nTime=1;LCD_FloorTurn_ms=500;
		
		
				  
				  
				    }

				  }
		

				  else if((Flat1==1)&&(Now_Flat>1))	
			   {
			   	  if(Door_State_Flag==1)	   //关门
				  {
				  	 Door_State_Flag=0;
					 TIM3_Init(Door_Close);	 //升降机关门
					 GPIO_ResetBits(GPIOA, GPIO_Pin_5);	
					 Door_Close_Ms=4000;
				  
				  }
		
				  if(Door_Closefinish_flag==1)	//		 下行
				  {
				  	Door_Closefinish_flag=0;
					TIM3_Init(Lift_Down);		//下行
					GPIO_ResetBits(GPIOA, GPIO_Pin_4);
					Lift_Motor_Ms=(Now_Flat-1)*6000;
					LED_FlowDown_Flag=1;
					LED_FlowDown_ms=200;	
				  
				  }
		
				  if(Arrive_Floor_flag==1) //开门
				  {
				   Arrive_Floor_flag=0;
				   LED_FlowDown_Flag=0;	 //关流水灯
				   LED_Flow_Close();
				   TIM3_Init(Door_Open);
				   GPIO_SetBits(GPIOA, GPIO_Pin_5);	
				   Door_Open_ms=4000;
				  
				  }
				  if(Stop_flag==1)	  //开门等待
				  {
				  	 Stop_flag=0;
					 TIM3_Init(All_Stop);
					 Door_Wait_ms=2000;
				  }
		
				  if(Door_Wait_flag==1)	 //停止运行
				  {
				  	   Door_Wait_flag=0;
					   Flat1=0;
					   led|=GPIO_Pin_8;
					   LED_Run();
					   Now_Flat=1;
					   Door_State_Flag=1;
		
					   	LCD_DisplayStringLine(Line4,(unsigned char *)"         1          ");
					    LCD_FloorTurn_nTime=1;LCD_FloorTurn_ms=500;
		
		
				  
				  
				  }

				  }
				  
				  	else
				  {
				  
				  	Scan_Down_Flag=0;key_flag=1;key_ms=10000000;
				  }
			   	 
	   
	   
	   			}
	   		}
	   }
   

   
 

void SysTick_Handler(void)
{
 TimingDelay --;
 if(--key_ms==0)
 {
   key_flag=0;
   Scan_Up_Flag=1 ;
 
 }

 if(--Door_Close_Ms==0)
 {
 	Door_Closefinish_flag=1;
 }
 if(--Lift_Motor_Ms==0)
 {
  Arrive_Floor_flag=1;
 
 }
 if(--Door_Open_ms==0)
 {
   Stop_flag=1;
 
 }
 if(--Door_Wait_ms==0)
 {
   Door_Wait_flag=1;
 }


 if((LED_FlowUp_Flag==1)&&(--LED_FlowUp_ms==0))	//上行 流水灯
 {
 	LED_FlowUp_ms=200;
	LED_Flow_Close();
	led&=~LEDn[i];LED_Run();
	i++;
	if(i==4)
	i=0;

 }

  if((LED_FlowDown_Flag==1)&&(--LED_FlowDown_ms==0))	//下行 流水灯
 {
 	LED_FlowDown_ms=200;
	LED_Flow_Close();
	led&=~LEDn2[i];LED_Run();
	i++;
	if(i==4)
	i=0;

 }




 if((LCD_FloorTurn_nTime>0)&&(--LCD_FloorTurn_ms==0))  //闪烁
	{
		LCD_FloorTurn_ms=500;
		if(LCD_FloorTurn_nTime==1)
		{
			LCD_DisplayStringLine(Line4,(unsigned char *)"                    ");
			LCD_FloorTurn_nTime++;
		}
		else if(LCD_FloorTurn_nTime==2)
		{
			
			sprintf((char*)string,"         %d          ",Now_Flat );
			LCD_DisplayStringLine(Line4,string);
			LCD_FloorTurn_nTime++;
		}
		else if(LCD_FloorTurn_nTime==3)
		{
			LCD_DisplayStringLine(Line4,(unsigned char *)"                    ");
			LCD_FloorTurn_nTime++;
		}
		else if(LCD_FloorTurn_nTime==4)
		{
			sprintf((char*)string,"         %d          ",Now_Flat );
			LCD_DisplayStringLine(Line4,string);
			LCD_FloorTurn_nTime=0;
		}
	}


}

void KEY_Scan(void)
{

if(RB1==0)
{
Delay_Ms(10);
if(RB1==0&&Now_Flat!=1)
{
Flat1=1;
key_ms=1000;
led&=~GPIO_Pin_8;
LED_Run();

}
while(!RB1);

}

else if(RB2==0)
{
Delay_Ms(10);
if(RB2==0&&Now_Flat!=2)
{
Flat2=1;
key_ms=1000;
led&=~GPIO_Pin_9;
LED_Run();


}
while(!RB2);

}

else if(RB3==0)
{
Delay_Ms(10);
if(RB3==0&&Now_Flat!=3)
{
Flat3=1;
key_ms=1000;
led&=~GPIO_Pin_10;
LED_Run();


}
while(!RB3);

}

else if(RB4==0)
{
Delay_Ms(10);
if(RB4==0&&Now_Flat!=4)
{
Flat4=1;
key_ms=1000;
led&=~GPIO_Pin_11;
LED_Run();

}
while(!RB4);

}


}

void LED_Run(void)
{
GPIO_Write(GPIOC,led);
GPIO_SetBits(GPIOD,GPIO_Pin_2);
GPIO_ResetBits(GPIOD,GPIO_Pin_2);


}

void LED_Flow_Close(void)
{
  led|=GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15;
   LED_Run();

}

void Time_Display(uint32_t TimeVar)
{
  uint32_t THH = 0, TMM = 0, TSS = 0;
  
  /* Reset RTC Counter when Time is 23:59:59 */
  if (RTC_GetCounter() == 0x0001517F)
  {
     RTC_SetCounter(0x0);
     /* Wait until last write operation on RTC registers has finished */
     RTC_WaitForLastTask();
  }
  
  /* Compute  hours */
  THH = TimeVar / 3600;
  /* Compute minutes */
  TMM = (TimeVar % 3600) / 60;
  /* Compute seconds */
  TSS = (TimeVar % 3600) % 60;

  sprintf((char*)string,"     %0.2d: %0.2d: %0.2d     ", THH, TMM, TSS);
  LCD_DisplayStringLine(Line5,string);
}


 


void Delay_Ms(u32 nTime)
{
	TimingDelay = nTime;
	while(TimingDelay != 0);	
}

⑤、代码分析

因为频繁使用滴答定时器，故将其中断服务函数写在主函数，方便定义变量；其次是频率的计算

频率：

//Fpwm = 72M / ((arr+1)*(psc+1))(单位：Hz)
占空比：

//duty circle = TIM3->CCR1 / arr(单位：%)

再有是流水灯，采用GPIO_Write函数，并用数组保存；升降机运行的顺序为是否上行，若上行，升降机关门——上行——开门——停止运行——开门等待；这样的顺序，其中led楼层指示灯、流水灯、到达楼层闪烁等分别写在相应的步骤中这里不再赘述，具体看程序注解。

完整程序和代码

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