目的

创建一个带日历的温湿度计

步骤

1. 新建rtc.c/rtc.h，并把两个文件添加到user下面：

2. rtc.c 代码如下：

#include "rtc.h"

ErrorStatus rest_rtc(void)
{
	ErrorStatus err_rtc;
	RTC_InitTypeDef RTC_InitStruct = {0};
	RCC_LSE_Enable(RCC_LSE_MODE_OSC, RCC_LSE_AMP_NORMAL, RCC_LSE_DRIVER_NORMAL);  // 选择LSE为RTC时钟
	RTC_InitStruct.DateStruct.Day = 0x27;             //日
	RTC_InitStruct.DateStruct.Month = RTC_Month_May;//月
	RTC_InitStruct.DateStruct.Week = RTC_Weekday_Monday;//星期
	RTC_InitStruct.DateStruct.Year = 0x23; //年
	
	RTC_InitStruct.TimeStruct.Hour = 0x11;   //时      
	RTC_InitStruct.TimeStruct.Minute = 0x58;//分
	RTC_InitStruct.TimeStruct.Second = 0x59;//秒
	RTC_InitStruct.TimeStruct.AMPM = 0;
	RTC_InitStruct.TimeStruct.H24 = 0; //采用12小时设置
	
	RTC_InitStruct.RTC_ClockSource = RTC_RTCCLK_FROM_LSE;
	err_rtc = RTC_Init(&RTC_InitStruct);    // RTC模块初始化， 用户需选定需要使用的时钟源
	
	if(err_rtc != SUCCESS)
	{
		return ERROR;
	}
	return SUCCESS;
}

rtc.h：

#ifndef __RTC_H__
#define __RTC_H__
#include "main.h"
ErrorStatus rest_rtc(void);

#endif

修改主函数内容如下：

#include "main.h"
#include "Lcd_Driver.h"
#include "LCD_calculate.h"
#include "dht11.h"
#include "rtc.h"
unsigned int counttime=0;
float temperature;  	    
uint8_t humidity; 
char buff_1[15];
char buff_2[15];
char buff_rtc[30];


void GPIO_Configuration(void);
void RCC_Configuration(void);
void BTIM_init(void);

int main()
{	
	 RTC_InitTypeDef RTC_InitStruct = {0};

	 
	
	RCC_Configuration();  //系统时钟64M
	GPIO_Configuration(); //LED初始化
	BTIM_init();          //定时器初始化
	
	Lcd_Init();
	Lcd_Clear(GRAY0);               //清屏
	Redraw_Mainmenu();
	
	while(DHT11_GPIO_Config())	//DHT11初始化
	{
	}
	
	rest_rtc();
	
	
	while(1)
	{
		if(counttime>500)                           //200毫秒采集一次数据并更新屏幕
		{
			counttime=0;
		 	DHT11_Read_Data(&temperature,&humidity);	//读取温湿度	
			sprintf(buff_1,"%0.1f",temperature);
			sprintf(buff_2,"%d",humidity);  
			Gui_DrawFont_GBK16(90,25,BLUE,GRAY0,buff_1);		//更新显示
		  Gui_DrawFont_GBK16(90,47,BLUE,GRAY0,buff_2);

			RTC_GetDate(&RTC_InitStruct.DateStruct);// 取用当前日期，BCD格式
			sprintf(buff_rtc,"20%02x-%02x-%02x",RTC_InitStruct.DateStruct.Year, RTC_InitStruct.DateStruct.Month, RTC_InitStruct.DateStruct.Day );
			Gui_DrawFont_GBK16(10,80,BLUE,GRAY0,buff_rtc);
			RTC_GetTime(&RTC_InitStruct.TimeStruct);// 获取当前时间，BCD格式
			sprintf(buff_rtc,"%02x:%02x:%02x",RTC_InitStruct.TimeStruct.Hour, RTC_InitStruct.TimeStruct.Minute, RTC_InitStruct.TimeStruct.Second );
			Gui_DrawFont_GBK16(10,100,BLUE,GRAY0,buff_rtc);

		}
		
	}
	
}

编译下载到开发板，运行效果如下：