/* * File : drv_rtc.c * This file is part of RT-Thread RTOS * COPYRIGHT (C) 2009-2013 RT-Thread Develop Team * * The license and distribution terms for this file may be * found in the file LICENSE in this distribution or at * http://www.rt-thread.org/license/LICENSE * * Change Logs: * Date Author Notes * 2017-04-05 lizhen9880 the first version for STM32F429 */ /* Includes ------------------------------------------------------------------*/ #include "board.h" #include "drv_rtc.h" #include #if defined(RT_USING_RTC) /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ /* Private macro -------------------------------------------------------------*/ #ifdef RT_RTC_DEBUG #define rtc_debug(format,args...) rt_kprintf(format, ##args) #else #define rtc_debug(format,args...) #endif /* Private variables ---------------------------------------------------------*/ static struct rt_device rtc; RTC_HandleTypeDef RTC_Handler; //RTC句柄 //RTC初始化 //返回值:0,初始化成功; // 2,进入初始化模式失败; rt_uint8_t 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); __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(rt_uint8_t week,rt_uint8_t hour,rt_uint8_t min,rt_uint8_t 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(rt_uint32_t wksel,rt_uint16_t 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) { rt_kprintf("ALARM A!\r\n"); } //RTC WAKE UP中断服务函数 void RTC_WKUP_IRQHandler(void) { HAL_RTCEx_WakeUpTimerIRQHandler(&RTC_Handler); } time_t GetRTCTimeStamp(void) { RTC_TimeTypeDef RTC_TimeStruct; RTC_DateTypeDef RTC_DateStruct; struct tm tm_new; HAL_RTC_GetTime(&RTC_Handler,&RTC_TimeStruct,RTC_FORMAT_BIN); HAL_RTC_GetDate(&RTC_Handler,&RTC_DateStruct,RTC_FORMAT_BIN); tm_new.tm_sec = RTC_TimeStruct.Seconds; tm_new.tm_min = RTC_TimeStruct.Minutes; tm_new.tm_hour = RTC_TimeStruct.Hours; tm_new.tm_mday = RTC_DateStruct.Date; tm_new.tm_mon = RTC_DateStruct.Month-1; tm_new.tm_year = RTC_DateStruct.Year+100; return mktime(&tm_new); } rt_err_t SetRTCTimeStamp(time_t time_stamp) { RTC_TimeTypeDef RTC_TimeStruct; RTC_DateTypeDef RTC_DateStruct; struct tm *p_tm; p_tm = localtime(&time_stamp); if(p_tm->tm_year<100) { return RT_ERROR; } RTC_TimeStruct.Seconds = p_tm->tm_sec ; RTC_TimeStruct.Minutes = p_tm->tm_min ; RTC_TimeStruct.Hours = p_tm->tm_hour; RTC_DateStruct.Date = p_tm->tm_mday; RTC_DateStruct.Month = p_tm->tm_mon+1 ; RTC_DateStruct.Year = p_tm->tm_year-100; RTC_DateStruct.WeekDay = p_tm->tm_wday+1; HAL_RTC_SetTime(&RTC_Handler,&RTC_TimeStruct,RTC_FORMAT_BIN); HAL_RTC_SetDate(&RTC_Handler,&RTC_DateStruct,RTC_FORMAT_BIN); return RT_EOK; } /* Private function prototypes -----------------------------------------------*/ /* Private functions ---------------------------------------------------------*/ static rt_err_t rt_rtc_open(rt_device_t dev, rt_uint16_t oflag) { if (dev->rx_indicate != RT_NULL) { /* Open Interrupt */ } return RT_EOK; } static rt_size_t rt_rtc_read( rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size) { return 0; } /***************************************************************************//** * @brief * Configure RTC device * * @details * * @note * * @param[in] dev * Pointer to device descriptor * * @param[in] cmd * RTC control command * * @param[in] args * Arguments * * @return * Error code ******************************************************************************/ static rt_err_t rt_rtc_control(rt_device_t dev, rt_uint8_t cmd, void *args) { rt_err_t result; RT_ASSERT(dev != RT_NULL); switch (cmd) { case RT_DEVICE_CTRL_RTC_GET_TIME: *(rt_uint32_t *)args = GetRTCTimeStamp(); rtc_debug("RTC: get rtc_time %x\n", *(rt_uint32_t *)args()); break; case RT_DEVICE_CTRL_RTC_SET_TIME: { result = SetRTCTimeStamp(*(rt_uint32_t *)args); rtc_debug("RTC: set rtc_time %x\n", *(rt_uint32_t *)args); /* Reset counter */ } break; } return result; } /***************************************************************************//** * @brief * Register RTC device * * @details * * @note * * @param[in] device * Pointer to device descriptor * * @param[in] name * Device name * * @param[in] flag * Configuration flags * * @return * Error code ******************************************************************************/ rt_err_t rt_hw_rtc_register( rt_device_t device, const char *name, rt_uint32_t flag) { RT_ASSERT(device != RT_NULL); device->type = RT_Device_Class_RTC; device->rx_indicate = RT_NULL; device->tx_complete = RT_NULL; device->init = RT_NULL; device->open = rt_rtc_open; device->close = RT_NULL; device->read = rt_rtc_read; device->write = RT_NULL; device->control = rt_rtc_control; device->user_data = RT_NULL; /* no private */ /* register a character device */ return rt_device_register(device, name, RT_DEVICE_FLAG_RDWR | flag); } /***************************************************************************//** * @brief * Initialize all RTC module related hardware and register RTC device to kernel * * @details * * @note ******************************************************************************/ int rt_hw_rtc_init(void) { RTC_Init(); /* register rtc device */ rt_hw_rtc_register(&rtc, RT_RTC_NAME, 0); return RT_EOK; } INIT_BOARD_EXPORT(rt_hw_rtc_init); #endif /***************************************************************************//** * @} ******************************************************************************/