Stm32_标准库_10_TIM_显示时间&日期

利用TIM计数耗费1s,启动中断，秒表加一

时间显示代码：

c 复制代码

#include "stm32f10x.h"    // Device header
#include "Delay.h"
#include "OLED.h"


uint16_t num = 0;
TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
NVIC_InitTypeDef NVIC_InitStructure;

/*初始化通用定时器TIM2*/
void Timer_Init(void){
	   RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);//APB1外设开启
	   
	   TIM_InternalClockConfig(TIM2);//选择内部时钟
	
	   /*初始化时基单元*/
	   TIM_TimeBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
	   TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;//向上计数
	   TIM_TimeBaseInitStructure.TIM_Period = 10000 - 1;//ARR自动重装
	   TIM_TimeBaseInitStructure.TIM_Prescaler = 7200 - 1;//psc预分频器
	   TIM_TimeBaseInitStructure.TIM_RepetitionCounter = 0;//高级计时器内容直接给零
	   //记录1s 
	   TIM_TimeBaseInit(TIM2, &TIM_TimeBaseInitStructure);//刚初始化完就会进中断
	   
	   TIM_ClearFlag(TIM2, TIM_FLAG_Update);//消除中断标志位
	   //使能更新中断
	   TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);
	
	   /*配置中断*/
	   NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);//选择组2
	   NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;//定时器2在NVIC内的通道
	   NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
	   NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;
	   NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
		 NVIC_Init(&NVIC_InitStructure);
		 
		 TIM_Cmd(TIM2, ENABLE);//启动定时器
}
unsigned char time[] = {23, 59, 30};
unsigned int date[] = {2023, 12, 31};
char month[] = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
void Show_Time(void){
	   OLED_ShowNum(1,1,time[0], 2);
	   OLED_ShowString(1, 3, ":");
	   OLED_ShowNum(1,4,time[1], 2);
	   OLED_ShowString(1, 6, ":");
	   OLED_ShowNum(1,7,time[2], 2);
}
void Time_Control(void){
	       time[2] = time[2] + 1;
        if(time[2] >= 60){
          time[2] = 0;
          time[1] = time[1] + 1;
          if(time[1] >= 60){
            time[1] = 0;
            time[0] = time[0] + 1;
            if(time[0] >= 24){
              time[0] = 0;
              date[2] = date[2] + 1;
   	          if(date[2] >= month[date[1]] + 1){
   		        date[2] = 1;
   		        date[1] = date[1] + 1;
   		        if(date[1] >= 13){
   		        	date[1] = 1;
   		        	date[0] = date[0] + 1;
   		        	if(date[0] >= 9999){
   		        		date[0] = 2023;
					   }
				   }
	           }
            }
         }
       }
				 
				Show_Time();
}

 
void TIM2_IRQHandler(void){//定时器2的中断函数，名字固定
	   if(TIM_GetITStatus(TIM2, TIM_IT_Update) == SET){
			  
			 TIM_ClearITPendingBit(TIM2, TIM_IT_Update);//清除标志位
			 Time_Control();
		 }
		  
}

 

 
void month2_Control(void){//判别闰平年 
	if((date[0] % 4 == 0 && date[0] % 100 != 0 )|| date[0] % 400 == 0) month[2] = 29;
	else month[2] = 28;
}

 

 
int main(void){
	 
	OLED_Init();//初始化OLED
  Timer_Init();
	while(1){ 
		 // Show_Time();
		    
	}
}

时间 + 日期代码：

c 复制代码

#include "stm32f10x.h"    // Device header
#include "Delay.h"
#include "OLED.h"


uint16_t num = 0;
TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
NVIC_InitTypeDef NVIC_InitStructure;

/*初始化通用定时器TIM2*/
void Timer_Init(void){
	   RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);//APB1外设开启
	   
	   TIM_InternalClockConfig(TIM2);//选择内部时钟
	
	   /*初始化时基单元*/
	   TIM_TimeBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
	   TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;//向上计数
	   TIM_TimeBaseInitStructure.TIM_Period = 10000 - 1;//ARR自动重装
	   TIM_TimeBaseInitStructure.TIM_Prescaler = 7200 - 1;//psc预分频器
	   TIM_TimeBaseInitStructure.TIM_RepetitionCounter = 0;//高级计时器内容直接给零
	   //记录1s 
	   TIM_TimeBaseInit(TIM2, &TIM_TimeBaseInitStructure);//刚初始化完就会进中断
	   
	   TIM_ClearFlag(TIM2, TIM_FLAG_Update);//消除中断标志位
	   //使能更新中断
	   TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);
	
	   /*配置中断*/
	   NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);//选择组2
	   NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;//定时器2在NVIC内的通道
	   NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
	   NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;
	   NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
		 NVIC_Init(&NVIC_InitStructure);
		 
		 TIM_Cmd(TIM2, ENABLE);//启动定时器
}
unsigned char time[] = {22, 59, 30};
unsigned int date[] = {2023, 12, 31};
char month[] = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
void Show_Time(void){
	   OLED_ShowNum(1,1,time[0], 2);
	   OLED_ShowString(1, 3, ":");
	   OLED_ShowNum(1,4,time[1], 2);
	   OLED_ShowString(1, 6, ":");
	   OLED_ShowNum(1,7,time[2], 2);
}
void Show_Date(void){
	   OLED_ShowNum(2,1,date[0], 4);
	   OLED_ShowString(2, 5, "/");
	   OLED_ShowNum(2,6,date[1], 2);
	   OLED_ShowString(2, 7, "/");
	   OLED_ShowNum(2,8,date[2], 2);
}
void Time_Control(void){
	       time[2] = time[2] + 1;
        if(time[2] >= 60){
          time[2] = 0;
          time[1] = time[1] + 1;
          if(time[1] >= 60){
            time[1] = 0;
            time[0] = time[0] + 1;
            if(time[0] >= 24){
              time[0] = 0;
              date[2] = date[2] + 1;
   	          if(date[2] >= month[date[1]] + 1){
   		        date[2] = 1;
   		        date[1] = date[1] + 1;
   		        if(date[1] >= 13){
   		        	date[1] = 1;
   		        	date[0] = date[0] + 1;
   		        	if(date[0] >= 9999){
   		        		date[0] = 2023;
					   }
				   }
	           }
            }
         }
       }
				 
				Show_Time();
			  Show_Date();
}

 
void TIM2_IRQHandler(void){//定时器2的中断函数，名字固定
	   if(TIM_GetITStatus(TIM2, TIM_IT_Update) == SET){
			  
			 TIM_ClearITPendingBit(TIM2, TIM_IT_Update);//清除标志位
			 Time_Control();
		 }
		  
}

 

 
void month2_Control(void){//判别闰平年 
	if((date[0] % 4 == 0 && date[0] % 100 != 0 )|| date[0] % 400 == 0) month[2] = 29;
	else month[2] = 28;
}

 

 
int main(void){
	 
	OLED_Init();//初始化OLED
  Timer_Init();
	while(1){ 
		 // Show_Time();
		    
	}
}