使用stm32内部时钟的RTC配置
#include "rtc.h"
#include "delay.h"
#include "led.h"
RTC_HandleTypeDef RTC_Handler; //RTC句柄
//RTC时间设置
//hour,min,sec:小时,分钟,秒钟
//ampm:@RTC_AM_PM_Definitions:RTC_HOURFORMAT12_AM/RTC_HOURFORMAT12_PM
//返回值:SUCEE(1),成功
// ERROR(0),进入初始化模式失败
HAL_StatusTypeDef RTC_Set_Time(u8 hour,u8 min,u8 sec,u8 ampm)
{
RTC_TimeTypeDef RTC_TimeStructure;
RTC_TimeStructure.Hours=hour;
RTC_TimeStructure.Minutes=min;
RTC_TimeStructure.Seconds=sec;
RTC_TimeStructure.TimeFormat=ampm;
RTC_TimeStructure.DayLightSaving=RTC_DAYLIGHTSAVING_NONE;
RTC_TimeStructure.StoreOperation=RTC_STOREOPERATION_RESET;
return HAL_RTC_SetTime(&RTC_Handler,&RTC_TimeStructure,RTC_FORMAT_BIN);
}
//RTC日期设置
//year,month,date:年(0~99),月(1~12),日(0~31)
//week:星期(1~7,0,非法!)
//返回值:SUCEE(1),成功
// ERROR(0),进入初始化模式失败
HAL_StatusTypeDef RTC_Set_Date(u8 year,u8 month,u8 date,u8 week)
{
RTC_DateTypeDef RTC_DateStructure;
RTC_DateStructure.Date=date;
RTC_DateStructure.Month=month;
RTC_DateStructure.WeekDay=week;
RTC_DateStructure.Year=year;
return HAL_RTC_SetDate(&RTC_Handler,&RTC_DateStructure,RTC_FORMAT_BIN);
}
//RTC初始化
//返回值:0,初始化成功;
// 2,进入初始化模式失败;
u8 RTC_Init(void)
{
RTC_Handler.Instance=RTC;
RTC_Handler.Init.HourFormat=RTC_HOURFORMAT_24;//RTC设置为24小时格式
RTC_Handler.Init.AsynchPrediv=0X7F; //RTC异步分频系数(1~0X7F)
RTC_Handler.Init.SynchPrediv=0XFF; //RTC同步分频系数(0~7FFF)
RTC_Handler.Init.OutPut=RTC_OUTPUT_DISABLE;
RTC_Handler.Init.OutPutPolarity=RTC_OUTPUT_POLARITY_HIGH;
RTC_Handler.Init.OutPutType=RTC_OUTPUT_TYPE_OPENDRAIN;
if(HAL_RTC_Init(&RTC_Handler)!=HAL_OK) return 2;
if(HAL_RTCEx_BKUPRead(&RTC_Handler,RTC_BKP_DR0)!=0X5050)//是否第一次配置
{
RTC_Set_Time(23,59,56,RTC_HOURFORMAT12_PM); //设置时间 ,根据实际时间修改
RTC_Set_Date(15,12,27,7); //设置日期
HAL_RTCEx_BKUPWrite(&RTC_Handler,RTC_BKP_DR0,0X5050);//标记已经初始化过了
}
return 0;
}
//RTC底层驱动，时钟配置
//此函数会被HAL_RTC_Init()调用
//hrtc:RTC句柄
void HAL_RTC_MspInit(RTC_HandleTypeDef* hrtc)
{
RCC_OscInitTypeDef RCC_OscInitStruct;
RCC_PeriphCLKInitTypeDef PeriphClkInitStruct;
__HAL_RCC_PWR_CLK_ENABLE();//使能电源时钟PWR
HAL_PWR_EnableBkUpAccess();//取消备份区域写保护
// RCC_OscInitStruct.OscillatorType=RCC_OSCILLATORTYPE_LSE;//LSE配置
// RCC_OscInitStruct.PLL.PLLState=RCC_PLL_NONE;
// RCC_OscInitStruct.LSEState=RCC_LSE_ON; //RTC使用LSE
// HAL_RCC_OscConfig(&RCC_OscInitStruct);
// PeriphClkInitStruct.PeriphClockSelection=RCC_PERIPHCLK_RTC;//外设为RTC
// PeriphClkInitStruct.RTCClockSelection=RCC_RTCCLKSOURCE_LSE;//RTC时钟源为LSE
// HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct);
//
RCC_OscInitStruct.OscillatorType=RCC_OSCILLATORTYPE_LSI;//LSE配置
RCC_OscInitStruct.PLL.PLLState=RCC_PLL_NONE;
RCC_OscInitStruct.LSIState=RCC_LSI_ON; //RTC使用LSE
HAL_RCC_OscConfig(&RCC_OscInitStruct);
PeriphClkInitStruct.PeriphClockSelection=RCC_PERIPHCLK_RTC;//外设为RTC
PeriphClkInitStruct.RTCClockSelection=RCC_RTCCLKSOURCE_LSI;//RTC时钟源为LSE
HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct);
__HAL_RCC_RTC_ENABLE();//RTC时钟使能
}
//设置闹钟时间(按星期闹铃,24小时制)
//week:星期几(1~7) @ref RTC_WeekDay_Definitions
//hour,min,sec:小时,分钟,秒钟
void RTC_Set_AlarmA(u8 week,u8 hour,u8 min,u8 sec)
{
RTC_AlarmTypeDef RTC_AlarmSturuct;
RTC_AlarmSturuct.AlarmTime.Hours=hour; //小时
RTC_AlarmSturuct.AlarmTime.Minutes=min; //分钟
RTC_AlarmSturuct.AlarmTime.Seconds=sec; //秒
RTC_AlarmSturuct.AlarmTime.SubSeconds=0;
RTC_AlarmSturuct.AlarmTime.TimeFormat=RTC_HOURFORMAT12_AM;
RTC_AlarmSturuct.AlarmMask=RTC_ALARMMASK_NONE;//精确匹配星期，时分秒
RTC_AlarmSturuct.AlarmSubSecondMask=RTC_ALARMSUBSECONDMASK_NONE;
RTC_AlarmSturuct.AlarmDateWeekDaySel=RTC_ALARMDATEWEEKDAYSEL_WEEKDAY;//按星期
RTC_AlarmSturuct.AlarmDateWeekDay=week; //星期
RTC_AlarmSturuct.Alarm=RTC_ALARM_A; //闹钟A
HAL_RTC_SetAlarm_IT(&RTC_Handler,&RTC_AlarmSturuct,RTC_FORMAT_BIN);
HAL_NVIC_SetPriority(RTC_Alarm_IRQn,0x01,0x02); //抢占优先级1,子优先级2
HAL_NVIC_EnableIRQ(RTC_Alarm_IRQn);
}
//周期性唤醒定时器设置
/*wksel: @ref RTCEx_Wakeup_Timer_Definitions
#define RTC_WAKEUPCLOCK_RTCCLK_DIV16 ((uint32_t)0x00000000)
#define RTC_WAKEUPCLOCK_RTCCLK_DIV8 ((uint32_t)0x00000001)
#define RTC_WAKEUPCLOCK_RTCCLK_DIV4 ((uint32_t)0x00000002)
#define RTC_WAKEUPCLOCK_RTCCLK_DIV2 ((uint32_t)0x00000003)
#define RTC_WAKEUPCLOCK_CK_SPRE_16BITS ((uint32_t)0x00000004)
#define RTC_WAKEUPCLOCK_CK_SPRE_17BITS ((uint32_t)0x00000006)
*/
//cnt:自动重装载值.减到0,产生中断.
void RTC_Set_WakeUp(u32 wksel,u16 cnt)
{
__HAL_RTC_WAKEUPTIMER_CLEAR_FLAG(&RTC_Handler, RTC_FLAG_WUTF);//清除RTC WAKE UP的标志
HAL_RTCEx_SetWakeUpTimer_IT(&RTC_Handler,cnt,wksel); //设置重装载值和时钟
HAL_NVIC_SetPriority(RTC_WKUP_IRQn,0x02,0x02); //抢占优先级1,子优先级2
HAL_NVIC_EnableIRQ(RTC_WKUP_IRQn);
}
//RTC闹钟中断服务函数
void RTC_Alarm_IRQHandler(void)
{
HAL_RTC_AlarmIRQHandler(&RTC_Handler);
}
//RTC闹钟A中断处理回调函数
void HAL_RTC_AlarmAEventCallback(RTC_HandleTypeDef *hrtc)
{
printf("ALARM A!\r\n");
}
//RTC WAKE UP中断服务函数
void RTC_WKUP_IRQHandler(void)
{
HAL_RTCEx_WakeUpTimerIRQHandler(&RTC_Handler);
}
//RTC WAKE UP中断处理
void HAL_RTCEx_WakeUpTimerEventCallback(RTC_HandleTypeDef *hrtc)
{
LED1=!LED1;
}