【STM32CubeMX项目】小时钟V1.0

前言

基于STM32CubeMx+STM32F103C6T6编写时钟功能。现在以及能实现时钟的简单功能，做文记录下。还有很多可以改进的地方，也算留下的基础版本下来备份吧。我愿称之为V1.0版本。可供学习参考。

实物

引脚接线：
OLED STM32F103
SCL --> PB8
SDA --> PB9
串口(TTL)
Tx --> PA10
Rx --> PA9

上电演示：

串口设置时间演示

目前只设置两种指令SetTime和SetDate，使用方法串口发送(波特率为115200)：

SetTime=123456 (时=12 分=34 秒=56) SetDate=230511 (年=23 月=05 日=11)

部分程序

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2023 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "rtc.h"
#include "usart.h" 
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include <string.h>
#include "oled.h"
#include "bmp.h"
#include "oledpage.h"
/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
unsigned char*  UART_Char;
unsigned char UART_Data[16];
unsigned char UART_Num=0;
RTC_TimeTypeDef TimeData;		//RTC时间结构定义
RTC_DateTypeDef TimeDate;		//RTC日期结构定义
/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
//BCD码转10进制码
uint8_t bcd_to_dec(uint8_t bcd_value)
{
    uint8_t dec_value = 0;
    uint8_t high_nibble = (uint8_t)(bcd_value >> 4);
    uint8_t low_nibble = (uint8_t)(bcd_value & 0x0F);
    
    dec_value = (high_nibble * 10) + low_nibble;
    
    return dec_value;
}
//将10进制数转换为BCD码
uint32_t dec_to_bcd(uint32_t dec)
{
    uint32_t bcd = 0;
    uint32_t shift = 0;
    while (dec > 0) {
        bcd |= (dec % 10) << shift;
        dec /= 10;
        shift += 4;
    }
    return bcd;
}
//字符转整型
uint32_t char_to_int(char str)
{
	char Num=str-'0';
	return Num;
}
//字符转整型
uint32_t char2_to_int(char strH,char strL)
{
	int Num=char_to_int(strH)*10+char_to_int(strL);
	return Num;
}
//数字字符转显示
void OLED_Num24(char Num)
{
	
}
/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/

/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */
void TIME_SetTime(char Hours,char Minutes,char Seconds);

void OLEDPage0_Mian()
{
	//时间控制页
	char OLED_TimeX=18;
	char OLED_TimeY=2;
	OLED_DrawBMP(OLED_TimeX,OLED_TimeY,OLED_TimeX+16,OLED_TimeY+3,BMP_NUM[bcd_to_dec(TimeData.Hours)/10]);OLED_TimeX+=16;
	OLED_DrawBMP(OLED_TimeX,OLED_TimeY,OLED_TimeX+16,OLED_TimeY+3,BMP_NUM[bcd_to_dec(TimeData.Hours)%10]);OLED_TimeX+=16;
	OLED_DrawBMP(OLED_TimeX,OLED_TimeY,OLED_TimeX+8,OLED_TimeY+3,BMP_NUMFH);OLED_TimeX+=8;
	OLED_DrawBMP(OLED_TimeX,OLED_TimeY,OLED_TimeX+16,OLED_TimeY+3,BMP_NUM[TimeData.Minutes/10]);OLED_TimeX+=16;
	OLED_DrawBMP(OLED_TimeX,OLED_TimeY,OLED_TimeX+16,OLED_TimeY+3,BMP_NUM[TimeData.Minutes%10]);OLED_TimeX+=20;
	OLED_ShowNum(OLED_TimeX,OLED_TimeY+1,bcd_to_dec(TimeData.Seconds),2,16);
	//日期控制页
	char OLED_DateX=12;
	char OLED_DateY=5;
	char OLED_DateSize=16;
	OLED_ShowNum(OLED_DateX,OLED_DateY,20,2,OLED_DateSize);OLED_DateX+=OLED_DateSize;
	OLED_ShowNum(OLED_DateX,OLED_DateY,bcd_to_dec(TimeDate.Year),2,OLED_DateSize);OLED_DateX+=OLED_DateSize;
	OLED_ShowChar(OLED_DateX,OLED_DateY,'-',OLED_DateSize);OLED_DateX+=OLED_DateSize/2;
	OLED_ShowNum(OLED_DateX,OLED_DateY,bcd_to_dec(TimeDate.Month),2,OLED_DateSize);OLED_DateX+=OLED_DateSize;
	OLED_ShowChar(OLED_DateX,OLED_DateY,'-',OLED_DateSize);OLED_DateX+=OLED_DateSize/2;
	OLED_ShowNum(OLED_DateX,OLED_DateY,bcd_to_dec(TimeDate.Date),2,OLED_DateSize);OLED_DateX+=OLED_DateSize;
	OLED_DateX+=OLED_DateSize/2;//留空
	OLED_ShowNum(OLED_DateX,OLED_DateY,bcd_to_dec(TimeDate.WeekDay),2,OLED_DateSize);
}
/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
void USART_Events(unsigned char* UART_Data);
void TIME_SetDate(char Year,char Month,char Date);
//判断是否全为空
int USART_IsAllNull(unsigned char *str, int len)
{
    for (int i = 0; i < len; i++) {
        if (*(str + i) != ' ') {
            return 0;  //不全为空
        }
    }
    return 1;  //全为空
}
//串口监听事件
void USART_Listen()
{
	//接收管理
	HAL_UART_Receive(&huart1,(uint8_t *)UART_Data,sizeof(UART_Data),200);
	if(USART_IsAllNull(UART_Data,sizeof(UART_Data))==0)
	{
		USART_Events(UART_Data);
		//HAL_UART_Transmit(&huart1,UART_Data,6,100);
		HAL_UART_Transmit(&huart1,(uint8_t *)"\r\n",2,10);
	}
	memset(UART_Data,' ', sizeof(UART_Data));
}
//串口监听到数据---触发事件
void USART_Events(unsigned char* UART_Data)
{
	char InsMode=0;
	char* strTime="SetTime=";	//指令1：配置时间
	char* strDate="SetDate=";	//指令2：配置日期
	//判断指令模式
	if(strncmp(UART_Data, strTime, 8)==0)
	{
		InsMode=1;
	}
	else if(strncmp(UART_Data, strDate, 8)==0)
	{
		InsMode=2;
	}
	//执行行动
	char State;	//状态接收
	switch(InsMode)
	{
		case 1:
			//设置时间(8+2*3=14)
			TIME_SetTime(char2_to_int(UART_Data[8],UART_Data[9]),char2_to_int(UART_Data[10],UART_Data[11]),char2_to_int(UART_Data[12],UART_Data[13]));
			HAL_UART_Transmit(&huart1,(uint8_t *)"SetTime ",8,10);
		break;
		case 2:
			//设置日期
			TIME_SetDate(char2_to_int(UART_Data[8],UART_Data[9]),char2_to_int(UART_Data[10],UART_Data[11]),char2_to_int(UART_Data[12],UART_Data[13]));
			HAL_UART_Transmit(&huart1,(uint8_t *)"SetDate ",8,10);
		break;
	}
	//提示行动
	if(InsMode!=0)
	{
		HAL_UART_Transmit(&huart1,(uint8_t *)"OK",2,100);
	}
	else
	{
		HAL_UART_Transmit(&huart1,(uint8_t *)"NO",2,100);
	}
	
}
//设置时间
//参数：时 分 秒
void TIME_SetTime(char Hours,char Minutes,char Seconds)
{
	TimeData.Hours=dec_to_bcd(Hours);
	TimeData.Minutes=dec_to_bcd(Minutes);
	TimeData.Seconds=dec_to_bcd(Seconds);
	HAL_RTC_SetTime(&hrtc, &TimeData, RTC_FORMAT_BCD);
}
//设置时间
//参数：年 月 日 	
//星期自动配了
void TIME_SetDate(char Year,char Month,char Date)
{
	TimeDate.Year=dec_to_bcd(Year);
	TimeDate.Month=dec_to_bcd(Month);
	//TimeDate.WeekDay=dec_to_bcd(WeekDay);//char WeekDay
	TimeDate.Date=dec_to_bcd(Date);
	HAL_RTC_SetDate(&hrtc, &TimeDate, RTC_FORMAT_BCD);
}
/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_RTC_Init();
  MX_USART1_UART_Init();
  /* USER CODE BEGIN 2 */
  OLED_Init();
  OLED_Clear();
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  OLEDPageArray_Set(OLEDPage0_Mian,0);
  //TIME_SetTime(0,0,0);
  //TIME_SetDate(22,10,8);
  while (1)
  {
	HAL_RTC_GetTime(&hrtc, &TimeData, RTC_FORMAT_BCD);	//RTC时间获取
	HAL_RTC_GetDate(&hrtc, &TimeDate, RTC_FORMAT_BCD);	//RTC日期获取
	OLEDPageShow(0);	//OLED页数显示
	USART_Listen();		//串口监听
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
  RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI|RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.LSIState = RCC_LSI_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }

  /** Initializes the CPU, AHB and APB buses clocks
  */
  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_DIV2;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
  {
    Error_Handler();
  }
  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_RTC;
  PeriphClkInit.RTCClockSelection = RCC_RTCCLKSOURCE_LSI;
  if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
  {
    Error_Handler();
  }
}

/* USER CODE BEGIN 4 */

/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  __disable_irq();
  while (1)
  {
  }
  /* USER CODE END Error_Handler_Debug */
}

#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
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 */