STM32基于STM32CubeMX DMA + EXTI读取DS1307数据

STM32基于STM32CubeMX DMA + EXTI读取DS1307数据

---

• ✨申明：本文章仅发表在CSDN网站，任何其他网站，未注明来源，见此内容均为盗链和爬取，请多多尊重和支持原创!
• 对于文中所提供的相关资源链接将作不定期更换。
• 说明：本人没有开通打赏功能，谨防上当受骗！
• DS1307 HAL外设驱动文件 https://github.com/lamik/DS1307_RTC_STM32_HAL

基于STM32CubeMX配置工程，当然不局限与STM32其他型号的芯片的使用，只要是stm32芯片都可以使用该源文件，在任意一款STM32型号的单片机上进行驱动移植使用，方便项目移植，减少不必要的重复开发工作。

• DS1307时钟模块
  

• 串口打印信息：
  

功能说明

由于工程默认配置的外部中断引脚，没有配置上下拉，中断引脚输出浮空状态，浮空状态认为是处于高电平一直处于触发状态，个人使用的话可以配置为上下拉状态，以及通过外部上下拉电阻，将中断引脚至于一个确定电平状态，然后通过上升沿或下降沿触发中断，调用 I2C DMA数据接收，这种用于主动方式来获取时间。

STM32CubeMX配置

• 使能I2C接口
  
• 开启DMA传输功能
  
• 具体参数配置：
  
  

GPIO引脚EXTI 配置

• 引脚可以根据个人需求任意指定。
  

✅串口配置用于调试信息输出（非必须项）

• ✨如果只是读取DS1307数据作为其他时基来源，可以不配置串口，这里是用来查看读取ds1307数据，所以启用串口功能。
  

以上配置可以根据个人需求进行引脚切换，以及外设选择。

KEIL工程配置

• usart.c文件中添加printf重映射，并在Keil设置中勾选MicroLib选项。

#include "stdio.h"
/*可调用printf*/
int fputc(int ch,FILE *f)
{
    /*&huart1指的是串口1，如果用别的串口就修改数字*/
    HAL_UART_Transmit(&huart1 , (uint8_t *)&ch , 1 , 1000);
    return ch;
}

DS1307驱动文件

• DS1307.c文件

/*
 * DS1307.c
 *
 *	The MIT License.
 *  Created on: 4.09.2019
 *      Author: Mateusz Salamon
 *		Contact: [email protected]
 *
  *      Website: https://msalamon.pl/dalsze-zmagania-z-rtc-ds1307-i-pcf8563-na-stm32/
  *      GitHub: https://github.com/lamik/DS1307_RTC_STM32_HAL
 */

#include "DS1307.h"

I2C_HandleTypeDef *hi2c_ds1307;

uint8_t Ds1307Buffer[7];

void DS1307_SetControlRegister(uint8_t Value)
{
	Value &= 0x93;// Put zeros where zero is needed 0b10010011

	HAL_I2C_Mem_Write(hi2c_ds1307, DS1307_ADDRESS, DS1307_REG_CONTROL, 1, &Value, 1, DS1307_I2C_TIMEOUT);
}

void DS1307_GetControlRegister(uint8_t *Value)
{
	HAL_I2C_Mem_Read(hi2c_ds1307, DS1307_ADDRESS, DS1307_REG_CONTROL, 1, Value, 1, DS1307_I2C_TIMEOUT);
}

void WriteBitToControlRegister(uint8_t BitNumber, uint8_t Value)
{
	uint8_t tmp;

	if(Value>1) Value = 1;

	DS1307_GetControlRegister(&tmp);
	tmp &= ~(1<<BitNumber);
	tmp |= (Value<<BitNumber);
	DS1307_SetControlRegister(tmp);
}
void DS1307_SQWEnable(uint8_t Enable)
{
	WriteBitToControlRegister(DS1307_CONTROL_SQUARE_WAVE_ENABLE, Enable);
}

void DS1307_SQWRateSelect(uint8_t Rate)
{
	uint8_t tmp;

	if(Rate>3) Rate = 3;

	DS1307_GetControlRegister(&tmp);
	tmp &= ~(3<<DS1307_CONTROL_RATE_SELECT_0);
	tmp |= (Rate<<DS1307_CONTROL_RATE_SELECT_0);
	DS1307_SetControlRegister(tmp);
}

void DS1307_OutputControl(uint8_t Enable)
{
	WriteBitToControlRegister(DS1307_CONTROL_OUTPUT_CONTROL, Enable);
}

void DS1307_ClockHalt(uint8_t Enable)
{
	uint8_t tmp;

	if(Enable>1) Enable = 1;

	HAL_I2C_Mem_Read(hi2c_ds1307, DS1307_ADDRESS, DS1307_REG_SECONDS, 1, &tmp, 1, DS1307_I2C_TIMEOUT);
	tmp &= ~(1<<7);
	tmp |= (Enable<<7);
	HAL_I2C_Mem_Write(hi2c_ds1307, DS1307_ADDRESS, DS1307_REG_SECONDS, 1, &tmp, 1, DS1307_I2C_TIMEOUT);
}

uint8_t bcd2dec(uint8_t BCD)
{
	return (((BCD & 0xF0)>>4) *10) + (BCD & 0xF);
}

uint8_t dec2bcd(uint8_t DEC)
{
	return ((DEC / 10)<<4) + (DEC % 10);
}

int dayofweek(int Day, int Month, int Year)
{
    int Y, C, M, N, D;
    M = 1 + (9 + Month) % 12;
    Y = Year - (M > 10);
    C = Y / 100;
    D = Y % 100;
    N = ((13 * M - 1) / 5 + D + D / 4 + 6 * C + Day + 5) % 7;
    return (7 + N) % 7;
}

void DS1307_SetDateTime(RTCDateTime *DateTime)
{
	uint8_t tmp[7];

	if(DateTime->Second > 59) DateTime->Second = 59;
	if(DateTime->Minute > 59) DateTime->Minute = 59;
	if(DateTime->Hour > 23) DateTime->Hour = 23;
	if(DateTime->Day > 31) DateTime->Day = 31;
	if(DateTime->Month > 12) DateTime->Month = 12;
	if(DateTime->Year> 2099) DateTime->Year = 2099;

	tmp[0] = dec2bcd(DateTime->Second);
	tmp[1] = dec2bcd(DateTime->Minute);
	tmp[2] = dec2bcd(DateTime->Hour);
	tmp[3] = dayofweek(DateTime->Day, DateTime->Month, DateTime->Year) + 1;
	tmp[4] = dec2bcd(DateTime->Day);
	tmp[5] = dec2bcd(DateTime->Month);
	tmp[6] = dec2bcd(DateTime->Year - 2000);

	HAL_I2C_Mem_Write(hi2c_ds1307, DS1307_ADDRESS, DS1307_REG_TIME, 1, tmp, 7, DS1307_I2C_TIMEOUT);
}

void DS1307_CalculateDateTime(RTCDateTime *DateTime)
{
	DateTime->Second = bcd2dec(Ds1307Buffer[0]);
	DateTime->Minute = bcd2dec(Ds1307Buffer[1]);
	DateTime->Hour = bcd2dec(Ds1307Buffer[2] & 0x3F);
	DateTime->DayOfWeek = Ds1307Buffer[3];
	DateTime->Day = bcd2dec(Ds1307Buffer[4]);
	DateTime->Month = bcd2dec(Ds1307Buffer[5] & 0x1F);
	DateTime->Year = 2000 + bcd2dec(Ds1307Buffer[6]);
}

#ifdef DS1307_USE_DMA
void DS1307_ReceiveDateTimeDMA(void)
{
	HAL_I2C_Mem_Read_DMA(hi2c_ds1307, DS1307_ADDRESS, DS1307_REG_TIME, 1, Ds1307Buffer, 7);
}
#else
void DS1307_GetDateTime(RTCDateTime *DateTime)
{
	HAL_I2C_Mem_Read(hi2c_ds1307, DS1307_ADDRESS, DS1307_REG_TIME, 1, Ds1307Buffer, 7, DS1307_I2C_TIMEOUT);

	DS1307_CalculateDateTime(DateTime);
}
#endif

void DS1307_ReadRAM(uint8_t Address, uint8_t *Value, uint8_t Length)
{
	if((Address < DS1307_REG_RAM_START) || (Address > DS1307_REG_RAM_END)) return;
	if((Address + Length + DS1307_REG_RAM_START) > DS1307_REG_RAM_END) return;

	HAL_I2C_Mem_Read(hi2c_ds1307, DS1307_ADDRESS, Address, 1, Value, Length, DS1307_I2C_TIMEOUT);
}

void DS1307_WriteRAM(uint8_t Address, uint8_t *Value, uint8_t Length)
{
	if((Address < DS1307_REG_RAM_START) || (Address > DS1307_REG_RAM_END)) return;
	if((Address + Length + DS1307_REG_RAM_START) > DS1307_REG_RAM_END) return;

	HAL_I2C_Mem_Write(hi2c_ds1307, DS1307_ADDRESS, Address, 1, Value, Length, DS1307_I2C_TIMEOUT);
}

void DS1307_Init(I2C_HandleTypeDef *hi2c)
{
	hi2c_ds1307 = hi2c;

	DS1307_SQWRateSelect(SQW_RATE_1HZ);
	DS1307_SQWEnable(1);
	DS1307_ClockHalt(0);
//	Ds1307Buffer[0] = 0x00; // 初始化为写入ds1307的起始地址
//  Ds1307Buffer[1] = 0x80; // 控制寄存器，启用时钟输出
//  HAL_I2C_Master_Transmit_DMA(hi2c_ds1307, DS1307_ADDRESS, Ds1307Buffer, 2);
//  HAL_Delay(10); // 等待数据传输完成
}
void DS1307_ReadTime(I2C_HandleTypeDef *hi2c,uint8_t *time_data)
{
	hi2c_ds1307 = hi2c;
  Ds1307Buffer[0] = 0x00; // 读取ds1307的起始地址
  HAL_I2C_Master_Transmit_DMA(hi2c_ds1307, DS1307_ADDRESS, Ds1307Buffer, 1);
  HAL_I2C_Master_Receive_DMA(hi2c_ds1307, DS1307_ADDRESS, time_data, 7);
  HAL_Delay(10); // 等待数据传输完成
}

• DS1307.h文件

/*
 * DS1307.h
 *
 * 	The MIT License.
 *  Created on: 4.09.2019
 *      Author: Mateusz Salamon
 *		Contact: [email protected]
 *
  *      Website: https://msalamon.pl/dalsze-zmagania-z-rtc-ds1307-i-pcf8563-na-stm32/
  *      GitHub: https://github.com/lamik/DS1307_RTC_STM32_HAL
 */
#ifndef __DS1307_H__
#define __DS1307_H__

//	Uncomment when you are using DMA reading
#include "main.h"

#define DS1307_USE_DMA	

#define DS1307_ADDRESS      (0x68<<1) //ds1307设备地址
#define DS1307_I2C_TIMEOUT			100

#define DS1307_REG_TIME             0x00

#define DS1307_REG_SECONDS          0x00
#define DS1307_REG_MINUTES          0x01
#define DS1307_REG_HOURS          	0x02
#define DS1307_REG_DAY              0x03
#define DS1307_REG_DATE             0x04
#define DS1307_REG_MONTH            0x05
#define DS1307_REG_YEAR             0x06
#define DS1307_REG_CONTROL          0x07
#define DS1307_REG_RAM_START        0x08
#define DS1307_REG_RAM_END     		0x3F

//
//	Controll register 0x07
//
#define DS1307_CONTROL_OUTPUT_CONTROL			7
#define DS1307_CONTROL_SQUARE_WAVE_ENABLE		4
#define DS1307_CONTROL_RATE_SELECT_1			1
#define DS1307_CONTROL_RATE_SELECT_0			0


typedef enum
{
	SQW_RATE_1HZ 		= 0,
	SQW_RATE_4096HZ 	= 1,
	SQW_RATE_8192HZ 	= 2,
	SQW_RATE_32768HZ 	= 3
}SQW_Rate;

typedef struct
{
	uint16_t 	Year;
	uint8_t  	Month;
	uint8_t		Day;
	uint8_t		Hour;
	uint8_t		Minute;
	uint8_t		Second;
	uint8_t		DayOfWeek;
}RTCDateTime;

void DS1307_SQWEnable(uint8_t Enable);
void DS1307_SQWRateSelect(uint8_t Rate);
void DS1307_OutputControl(uint8_t Enable);
void DS1307_ClockHalt(uint8_t Enable);

void DS1307_ReadRAM(uint8_t Address, uint8_t *Value, uint8_t Length);
void DS1307_WriteRAM(uint8_t Address, uint8_t *Value, uint8_t Length);

void DS1307_SetDateTime(RTCDateTime *DateTime);
#ifdef DS1307_USE_DMA
void DS1307_ReceiveDateTimeDMA(void);	// Use in DS1307 Interrupt handler
void DS1307_CalculateDateTime(RTCDateTime *DateTime);	// Use in DMA Complete Receive interrupt
#else
void DS1307_GetDateTime(RTCDateTime *DateTime);	// Use in blocking/interrupt mode in DS1307_INT EXTI handler
#endif
void DS1307_Init(I2C_HandleTypeDef *hi2c);

#endif

主程序代码

/* 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 "dma.h"
#include "i2c.h"
#include "usart.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "DS1307.h"
#include "stdio.h"
/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */

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

/* USER CODE END PM */

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

/* USER CODE BEGIN PV */
RTCDateTime r;      // Date and Time variable
uint8_t Message[32]; // UART message
uint8_t MessageSize;
/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
  /* USER CODE BEGIN 1 */
//    RTCDateTime *tm;
  /* 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_DMA_Init();
  MX_USART1_UART_Init();
  MX_I2C1_Init();
  /* USER CODE BEGIN 2 */
    DS1307_Init(&hi2c1);
    uint32_t TimerUART = HAL_GetTick();
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
    while (1)
    {
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
        if ((HAL_GetTick() - TimerUART) > 1000)
        {
       MessageSize = sprintf(Message, "%02d:%02d:%02d\n\r", r.Hour, r.Minute, r.Second);
//           MessageSize = sprintf(Message, "%02d:%02d:%02d\n\r", tm->Hour, tm->Minute, tm->Second);
           HAL_UART_Transmit(&huart1, Message, MessageSize, 1000);
//					printf("Time:%s \r\n",time_data);
            TimerUART = HAL_GetTick();
            HAL_GPIO_TogglePin(GPIOE, LED_Pin);
        }

    }
  /* USER CODE END 3 */
}

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

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
  RCC_OscInitStruct.HSIState = RCC_HSI_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();
  }
}

/* USER CODE BEGIN 4 */
#ifdef DS1307_USE_DMA
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
	if(GPIO_Pin == DS1307_INT_Pin)
	{
		DS1307_ReceiveDateTimeDMA();
	}
}

void HAL_I2C_MemRxCpltCallback(I2C_HandleTypeDef *hi2c)
{
	DS1307_CalculateDateTime(&r);
}
#else
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
	if(GPIO_Pin == DS1307_INT_Pin)
	{
		DS1307_GetDateTime(&r);
		printf("EXTI trigger! \r\n");
	}
}
#endif
/* 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 */

程序源码

• 工程基于STM32F103VE，可以根据个人适配到stm32任意一款型号的单片机上使用。
• ✨申明：本文章仅发表在CSDN网站，任何其他网站，未注明来源，见此内容均为盗链和爬取，请多多尊重和支持原创!
• 对于文中所提供的相关资源链接将作不定期更换。
• • 说明：本人没有开通打赏功能，也没有接受任何第三方自助，谨防上当受骗！

链接: https://pan.baidu.com/s/192KP5ozCzGFGhtzUAyuUhQ
提取码: p7j7