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RTC部分直接在上部分代码里面增加

1.配置STM32CubeMX工程文件

(1).使能RTC时钟

(2),采用外部时钟，配置一秒产生一次中断

(3).时间的话随便设置一个就行

 (4).生成keil工程文件

2.配置keil工程文件

(1).添加.c  .h文件，过程省略

(2).转移资源.c  .h文件里面的内容  

(3).去路径

 #include "main.h"  ——》#include "stm32g4xx_hal.h" ——》#include "stm32g4xx_hal_conf.h"

打开RTC使能

3.在main.c编写功能函数

(1).RTC初始化

(2).定义日期、时间结构体、定义八位变量秒(注意结构体类型需要记忆)

(3). 编写获取年月日时分秒的函数 并通过LCD屏幕显示出来（此处注意，需要两个结构体都获取时间，单独获取一个会出现问题）

 

#include "stdio.h"
#include "main.h"
#include "led\bsp_led.h"
#include "key\bsp_key.h"
#include "lcd\bsp_lcd.h"
#include "adc\bsp_adc.h"
#include "basic_tim6\bsp_basic_tim6.h"
#include "rtc\bsp_rtc.h"



__IO uint32_t uwTick_key_set_point = 0;
unsigned char uckey_valu,uckey_old,uckey_down,uckey_up;


__IO uint32_t uwTick_lcd_set_point = 0;
unsigned int i = 0;
unsigned char Lcd_Dis_String[22];


RTC_DateTypeDef Y_M_D_Date;
RTC_TimeTypeDef H_M_S_Time;
uint8_t Second;

void SystemClock_Config(void);
void KEY_Proc(void);
void LCD_Disp(void);

int main(void)
{
	
  HAL_Init();
	
  SystemClock_Config();

  LED_Init();
	KEY_Init();
	LCD_Init();
	ADC1_Init();
	ADC2_Init();
	LCD_Clear(White);
	TIM6_Init();
	
	RTC_Init();
	
	HAL_TIM_Base_Start_IT(&htim6);
  while (1)
  {
		
		KEY_Proc();
		LCD_Disp();
  }

}
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
	i++;
	HAL_TIM_Base_Start_IT(&htim6);
}
void LCD_Disp(void)
{
	if (uwTick - uwTick_lcd_set_point < 200) return;

	uwTick_lcd_set_point = uwTick;
	//i++;
	sprintf((char *)Lcd_Dis_String,"The time is %d",i);
	LCD_DisplayStringLine(Line0, Lcd_Dis_String);
	
	sprintf((char *)Lcd_Dis_String,"ADC1:%5.3f",getADC1()*3.3/4096);
	LCD_DisplayStringLine(Line1, Lcd_Dis_String);
	sprintf((char *)Lcd_Dis_String,"ADC2:%5.3f",getADC2()*3.3/4096);
	LCD_DisplayStringLine(Line2, Lcd_Dis_String);
	
	//RTC有关
	HAL_RTC_GetTime(&hrtc,&H_M_S_Time,RTC_FORMAT_BIN);
	HAL_RTC_GetDate(&hrtc,&Y_M_D_Date,RTC_FORMAT_BIN);
	
	sprintf((char *)Lcd_Dis_String,"DATE:%d/%d/%d",Y_M_D_Date.Year,Y_M_D_Date.Month,Y_M_D_Date.Date);
	LCD_DisplayStringLine(Line3, Lcd_Dis_String);	
	sprintf((char *)Lcd_Dis_String,"TIME:%d:%d:%d",H_M_S_Time.Hours,H_M_S_Time.Minutes,H_M_S_Time.Seconds);
	LCD_DisplayStringLine(Line4, Lcd_Dis_String);	
	
	
	
	
}

void KEY_Proc(void)
{

	
	if (uwTick - uwTick_key_set_point < 200) return;

	uwTick_key_set_point = uwTick;
	uckey_valu = KEY_Scan();
	
	uckey_down = uckey_valu & (uckey_old^uckey_valu);
	uckey_up = ~uckey_valu & (uckey_old^uckey_valu);
	uckey_old = uckey_valu;

	if (uckey_down == 1)
	{
		LED_Disp(0x11);
		
	}
	if (uckey_down == 2)
	{
		LED_Disp(0xff);
		
	}
	if (uckey_down == 3)
	{
		LED_Disp(0x44);
		
	}
	if (uckey_down == 4)
	{
		LED_Disp(0x00);
		
	}
}


void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};


  HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1);

  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV3;
  RCC_OscInitStruct.PLL.PLLN = 20;
  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
  RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
  RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }

  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
  {
    Error_Handler();
  }
}


void Error_Handler(void)
{

  __disable_irq();
  while (1)
  {
  }

}

#ifdef  USE_FULL_ASSERT

void assert_failed(uint8_t *file, uint32_t line)
{
  /* USER CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */

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