Stm32_标准库_14_串口&蓝牙模块_手机与蓝牙模块通信_实现模块读取并修改信息

由手机向蓝牙模块传输时间信息，Stm32获取信息并将已存在信息修改为传入信息

测试代码：

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

uint16_t num = 0;
TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
char News[100] = ""; 
uint8_t flag = 1;

/*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, 8, "/");
	   OLED_ShowNum(2,9,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;
					   }
				   }
	           }
            }
         }
       }
				 
				
}

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;
}

 
void Get_Hc05News(void){
	   uint32_t i = 0, j = 0;
	   while(j < 10000){//等待中断
	      while(Serial_GetRxFlag() == 1){//查看标志位并清除
					   News[i] =  Serial_GetRxData();//传入数据
					   i ++;
				     j = 0;
					   flag = 0;//标志传入了新数据
		    }
		    j ++;
		 }
}

void Array_NewsClear(void){//恢复数组初始化
	   uint16_t i = 0;
	   for(i = 0; i < 100; i ++) News[i] = '\0';
}

uint8_t StringLength(char * a){//计算数组长度函数
	      uint8_t length = 0;
	      uint8_t i = 0;
	      while(a[i] != '\0'){
					i ++;
					length ++;
				}
				return length;
}

uint8_t Check(char *a, uint8_t length){
	      if(length == 5 | length == 10){
					 return 1;
				}
				return 0;
}
 
int main(void){
	 
	OLED_Init();//初始化OLED
  Timer_Init();//开启计时器
	Serial_Init();//开启串口
	while(1){ 
		    Get_Hc05News();//时刻等待蓝牙传入数据
		     
		     if(flag == 0){//蓝牙传入了数据
					  //恢复标志位
					 if(Check(News, StringLength(News)) == 1){//若查看数据没有错误
						 OLED_ShowString(3, 1, "TRUE");
						 OLED_ShowString(4, 1, News);
						 Array_NewsClear();
					 }
					 else{
						   OLED_ShowString(3, 1, "FALSE");
						   OLED_ShowString(4, 1, News);
						   Array_NewsClear();
					 }
					 flag = 1;
				}
		    
	}
}

目前遇到的主要问题是OLED显示数字需要耗费时间，导致蓝牙模块传入信息不能及时抢占CPU导致数据漏传入,解决方法是修改蓝牙模块中断为更高级中断

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待完善…