STM32基于STM32CubeMX DMA + EXTI读取DS1307数据

STM32基于STM32CubeMX DMA + EXTI读取DS1307数据

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• ✨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: [e-mail]**      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 0b10010011HAL_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);
}
#endifvoid 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: [e-mail]**      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			0typedef 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