319 lines
9.1 KiB
C
319 lines
9.1 KiB
C
/*
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* File : drv_rtc.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2009-2013 RT-Thread Develop Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rt-thread.org/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2017-04-05 lizhen9880 the first version for STM32F429
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "board.h"
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#include "drv_rtc.h"
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#include <rtdevice.h>
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#if defined(RT_USING_RTC)
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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#ifdef RT_RTC_DEBUG
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#define rtc_debug(format,args...) rt_kprintf(format, ##args)
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#else
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#define rtc_debug(format,args...)
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#endif
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/* Private variables ---------------------------------------------------------*/
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static struct rt_device rtc;
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RTC_HandleTypeDef RTC_Handler; //RTC句柄
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//RTC初始化
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//返回值:0,初始化成功;
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// 2,进入初始化模式失败;
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rt_uint8_t RTC_Init(void)
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{
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RTC_Handler.Instance=RTC;
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RTC_Handler.Init.HourFormat=RTC_HOURFORMAT_24;//RTC设置为24小时格式
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RTC_Handler.Init.AsynchPrediv=0X7F; //RTC异步分频系数(1~0X7F)
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RTC_Handler.Init.SynchPrediv=0XFF; //RTC同步分频系数(0~7FFF)
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RTC_Handler.Init.OutPut=RTC_OUTPUT_DISABLE;
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RTC_Handler.Init.OutPutPolarity=RTC_OUTPUT_POLARITY_HIGH;
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RTC_Handler.Init.OutPutType=RTC_OUTPUT_TYPE_OPENDRAIN;
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if(HAL_RTC_Init(&RTC_Handler)!=HAL_OK) return 2;
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if(HAL_RTCEx_BKUPRead(&RTC_Handler,RTC_BKP_DR0)!=0X5050)//是否第一次配置
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{
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// RTC_Set_Time(23,59,56,RTC_HOURFORMAT12_PM); //设置时间 ,根据实际时间修改
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// RTC_Set_Date(15,12,27,7); //设置日期
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HAL_RTCEx_BKUPWrite(&RTC_Handler,RTC_BKP_DR0,0X5050);//标记已经初始化过了
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}
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return 0;
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}
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//RTC底层驱动，时钟配置
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//此函数会被HAL_RTC_Init()调用
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//hrtc:RTC句柄
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void HAL_RTC_MspInit(RTC_HandleTypeDef* hrtc)
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{
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RCC_OscInitTypeDef RCC_OscInitStruct;
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RCC_PeriphCLKInitTypeDef PeriphClkInitStruct;
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__HAL_RCC_PWR_CLK_ENABLE();//使能电源时钟PWR
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HAL_PWR_EnableBkUpAccess();//取消备份区域写保护
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RCC_OscInitStruct.OscillatorType=RCC_OSCILLATORTYPE_LSE;//LSE配置
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RCC_OscInitStruct.PLL.PLLState=RCC_PLL_NONE;
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RCC_OscInitStruct.LSEState=RCC_LSE_ON; //RTC使用LSE
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HAL_RCC_OscConfig(&RCC_OscInitStruct);
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PeriphClkInitStruct.PeriphClockSelection=RCC_PERIPHCLK_RTC;//外设为RTC
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PeriphClkInitStruct.RTCClockSelection=RCC_RTCCLKSOURCE_LSE;//RTC时钟源为LSE
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HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct);
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__HAL_RCC_RTC_ENABLE();//RTC时钟使能
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}
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//设置闹钟时间(按星期闹铃,24小时制)
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//week:星期几(1~7) @ref RTC_WeekDay_Definitions
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//hour,min,sec:小时,分钟,秒钟
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void RTC_Set_AlarmA(rt_uint8_t week,rt_uint8_t hour,rt_uint8_t min,rt_uint8_t sec)
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{
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RTC_AlarmTypeDef RTC_AlarmSturuct;
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RTC_AlarmSturuct.AlarmTime.Hours=hour; //小时
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RTC_AlarmSturuct.AlarmTime.Minutes=min; //分钟
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RTC_AlarmSturuct.AlarmTime.Seconds=sec; //秒
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RTC_AlarmSturuct.AlarmTime.SubSeconds=0;
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RTC_AlarmSturuct.AlarmTime.TimeFormat=RTC_HOURFORMAT12_AM;
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RTC_AlarmSturuct.AlarmMask=RTC_ALARMMASK_NONE;//精确匹配星期，时分秒
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RTC_AlarmSturuct.AlarmSubSecondMask=RTC_ALARMSUBSECONDMASK_NONE;
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RTC_AlarmSturuct.AlarmDateWeekDaySel=RTC_ALARMDATEWEEKDAYSEL_WEEKDAY;//按星期
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RTC_AlarmSturuct.AlarmDateWeekDay=week; //星期
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RTC_AlarmSturuct.Alarm=RTC_ALARM_A; //闹钟A
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HAL_RTC_SetAlarm_IT(&RTC_Handler,&RTC_AlarmSturuct,RTC_FORMAT_BIN);
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HAL_NVIC_SetPriority(RTC_Alarm_IRQn,0x01,0x02); //抢占优先级1,子优先级2
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HAL_NVIC_EnableIRQ(RTC_Alarm_IRQn);
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}
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//周期性唤醒定时器设置
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/*wksel: @ref RTCEx_Wakeup_Timer_Definitions
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#define RTC_WAKEUPCLOCK_RTCCLK_DIV16 ((uint32_t)0x00000000)
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#define RTC_WAKEUPCLOCK_RTCCLK_DIV8 ((uint32_t)0x00000001)
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#define RTC_WAKEUPCLOCK_RTCCLK_DIV4 ((uint32_t)0x00000002)
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#define RTC_WAKEUPCLOCK_RTCCLK_DIV2 ((uint32_t)0x00000003)
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#define RTC_WAKEUPCLOCK_CK_SPRE_16BITS ((uint32_t)0x00000004)
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#define RTC_WAKEUPCLOCK_CK_SPRE_17BITS ((uint32_t)0x00000006)
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*/
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//cnt:自动重装载值.减到0,产生中断.
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void RTC_Set_WakeUp(rt_uint32_t wksel,rt_uint16_t cnt)
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{
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__HAL_RTC_WAKEUPTIMER_CLEAR_FLAG(&RTC_Handler, RTC_FLAG_WUTF);//清除RTC WAKE UP的标志
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HAL_RTCEx_SetWakeUpTimer_IT(&RTC_Handler,cnt,wksel); //设置重装载值和时钟
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HAL_NVIC_SetPriority(RTC_WKUP_IRQn,0x02,0x02); //抢占优先级1,子优先级2
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HAL_NVIC_EnableIRQ(RTC_WKUP_IRQn);
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}
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//RTC闹钟中断服务函数
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void RTC_Alarm_IRQHandler(void)
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{
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HAL_RTC_AlarmIRQHandler(&RTC_Handler);
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}
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//RTC闹钟A中断处理回调函数
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void HAL_RTC_AlarmAEventCallback(RTC_HandleTypeDef *hrtc)
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{
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rt_kprintf("ALARM A!\r\n");
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}
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//RTC WAKE UP中断服务函数
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void RTC_WKUP_IRQHandler(void)
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{
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HAL_RTCEx_WakeUpTimerIRQHandler(&RTC_Handler);
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}
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time_t GetRTCTimeStamp(void)
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{
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RTC_TimeTypeDef RTC_TimeStruct;
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RTC_DateTypeDef RTC_DateStruct;
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struct tm tm_new;
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HAL_RTC_GetTime(&RTC_Handler,&RTC_TimeStruct,RTC_FORMAT_BIN);
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HAL_RTC_GetDate(&RTC_Handler,&RTC_DateStruct,RTC_FORMAT_BIN);
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tm_new.tm_sec = RTC_TimeStruct.Seconds;
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tm_new.tm_min = RTC_TimeStruct.Minutes;
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tm_new.tm_hour = RTC_TimeStruct.Hours;
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tm_new.tm_mday = RTC_DateStruct.Date;
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tm_new.tm_mon = RTC_DateStruct.Month-1;
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tm_new.tm_year = RTC_DateStruct.Year+100;
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return mktime(&tm_new);
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}
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rt_err_t SetRTCTimeStamp(time_t time_stamp)
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{
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RTC_TimeTypeDef RTC_TimeStruct;
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RTC_DateTypeDef RTC_DateStruct;
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struct tm *p_tm;
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p_tm = localtime(&time_stamp);
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if(p_tm->tm_year<100)
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{
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return RT_ERROR;
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}
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RTC_TimeStruct.Seconds = p_tm->tm_sec ;
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RTC_TimeStruct.Minutes = p_tm->tm_min ;
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RTC_TimeStruct.Hours = p_tm->tm_hour;
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RTC_DateStruct.Date = p_tm->tm_mday;
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RTC_DateStruct.Month = p_tm->tm_mon+1 ;
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RTC_DateStruct.Year = p_tm->tm_year-100;
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RTC_DateStruct.WeekDay = p_tm->tm_wday+1;
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HAL_RTC_SetTime(&RTC_Handler,&RTC_TimeStruct,RTC_FORMAT_BIN);
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HAL_RTC_SetDate(&RTC_Handler,&RTC_DateStruct,RTC_FORMAT_BIN);
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return RT_EOK;
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}
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/* Private function prototypes -----------------------------------------------*/
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/* Private functions ---------------------------------------------------------*/
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static rt_err_t rt_rtc_open(rt_device_t dev, rt_uint16_t oflag)
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{
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if (dev->rx_indicate != RT_NULL)
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{
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/* Open Interrupt */
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}
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return RT_EOK;
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}
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static rt_size_t rt_rtc_read(
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rt_device_t dev,
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rt_off_t pos,
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void* buffer,
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rt_size_t size)
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{
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return 0;
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}
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/***************************************************************************//**
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* @brief
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* Configure RTC device
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*
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* @details
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*
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* @note
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*
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* @param[in] dev
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* Pointer to device descriptor
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*
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* @param[in] cmd
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* RTC control command
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*
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* @param[in] args
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* Arguments
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*
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* @return
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* Error code
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******************************************************************************/
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static rt_err_t rt_rtc_control(rt_device_t dev, int cmd, void *args)
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{
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rt_err_t result;
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RT_ASSERT(dev != RT_NULL);
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switch (cmd)
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{
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case RT_DEVICE_CTRL_RTC_GET_TIME:
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*(rt_uint32_t *)args = GetRTCTimeStamp();
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rtc_debug("RTC: get rtc_time %x\n", *(rt_uint32_t *)args());
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break;
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case RT_DEVICE_CTRL_RTC_SET_TIME:
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{
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result = SetRTCTimeStamp(*(rt_uint32_t *)args);
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rtc_debug("RTC: set rtc_time %x\n", *(rt_uint32_t *)args);
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/* Reset counter */
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}
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break;
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}
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return result;
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}
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/***************************************************************************//**
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* @brief
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* Register RTC device
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*
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* @details
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*
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* @note
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*
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* @param[in] device
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* Pointer to device descriptor
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*
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* @param[in] name
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* Device name
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*
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* @param[in] flag
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* Configuration flags
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*
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* @return
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* Error code
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******************************************************************************/
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rt_err_t rt_hw_rtc_register(
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rt_device_t device,
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const char *name,
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rt_uint32_t flag)
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{
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RT_ASSERT(device != RT_NULL);
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device->type = RT_Device_Class_RTC;
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device->rx_indicate = RT_NULL;
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device->tx_complete = RT_NULL;
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device->init = RT_NULL;
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device->open = rt_rtc_open;
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device->close = RT_NULL;
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device->read = rt_rtc_read;
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device->write = RT_NULL;
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device->control = rt_rtc_control;
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device->user_data = RT_NULL; /* no private */
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/* register a character device */
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return rt_device_register(device, name, RT_DEVICE_FLAG_RDWR | flag);
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}
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/***************************************************************************//**
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* @brief
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* Initialize all RTC module related hardware and register RTC device to kernel
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*
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* @details
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*
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* @note
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******************************************************************************/
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int rt_hw_rtc_init(void)
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{
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RTC_Init();
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/* register rtc device */
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rt_hw_rtc_register(&rtc, RT_RTC_NAME, 0);
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return RT_EOK;
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}
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INIT_BOARD_EXPORT(rt_hw_rtc_init);
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#endif
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/***************************************************************************//**
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* @}
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******************************************************************************/
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