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/*
* Copyright (c) 2006-2018, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2017-10-25 ZYH first implementation
* 2018-10-23 XXXXzzzz000 first implementation,referance:stm32f4xx-HAL/drv_rtc.c
*/
#include <rthw.h>
#include <rtthread.h>
#include <rtdevice.h>
#include <board.h>
#include <string.h>
#include <time.h>
RTC_HandleTypeDef hrtc;
/* RTC init function */
void MX_RTC_Init(void)
{
RTC_TimeTypeDef sTime;
RTC_DateTypeDef sDate;
/* Initialize RTC Only */
hrtc.Instance = RTC;
hrtc.Init.AsynchPrediv = RTC_AUTO_1_SECOND;
hrtc.Init.OutPut = RTC_OUTPUTSOURCE_NONE;
RT_ASSERT(HAL_RTC_Init(&hrtc) == HAL_OK);
/* Initialize RTC and set the Time and Date */
if (HAL_RTCEx_BKUPRead(&hrtc, RTC_BKP_DR1) != 0x32F1)
{
sTime.Hours = 0x0;
sTime.Minutes = 0x0;
sTime.Seconds = 0x0;
RT_ASSERT(HAL_RTC_SetTime(&hrtc, &sTime, RTC_FORMAT_BIN) == HAL_OK);
sDate.WeekDay = RTC_WEEKDAY_MONDAY;
sDate.Month = RTC_MONTH_JANUARY;
sDate.Date = 1;
sDate.Year = 0;
RT_ASSERT(HAL_RTC_SetDate(&hrtc, &sDate, RTC_FORMAT_BIN) == HAL_OK);
}
HAL_RTCEx_BKUPWrite(&hrtc, RTC_BKP_DR1, 0x32F1);
}
void HAL_RTC_MspInit(RTC_HandleTypeDef *rtcHandle)
{
RCC_OscInitTypeDef RCC_OscInitStruct;
RCC_PeriphCLKInitTypeDef PeriphClkInitStruct;
if (rtcHandle->Instance == RTC)
{
__HAL_RCC_PWR_CLK_ENABLE();
HAL_PWR_EnableBkUpAccess();
__HAL_RCC_BKP_CLK_ENABLE();
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSE;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
RCC_OscInitStruct.LSEState = RCC_LSE_ON;
HAL_RCC_OscConfig(&RCC_OscInitStruct);
PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_RTC;
PeriphClkInitStruct.RTCClockSelection = RCC_RTCCLKSOURCE_LSE;
HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct);
__HAL_RCC_RTC_ENABLE();
}
}
void HAL_RTC_MspDeInit(RTC_HandleTypeDef *rtcHandle)
{
if (rtcHandle->Instance == RTC)
{
/* 禁用RTC时钟 */
__HAL_RCC_RTC_DISABLE();
/* 禁用PWR时钟和读取备份域 */
HAL_PWR_DisableBkUpAccess();
__HAL_RCC_PWR_CLK_DISABLE();
/* 禁用备份时钟：备份寄存器 */
__HAL_RCC_BKP_CLK_DISABLE();
}
}
static rt_err_t stm32_rtc_control(struct rt_device *dev,
int cmd,
void *args)
{
struct tm *tm_now;
struct tm now;
RTC_TimeTypeDef sTime;
RTC_DateTypeDef sDate;
switch (cmd)
{
case RT_DEVICE_CTRL_RTC_GET_TIME:
HAL_RTC_GetTime(&hrtc, &sTime, RTC_FORMAT_BIN);
HAL_RTC_GetDate(&hrtc, &sDate, RTC_FORMAT_BIN);
now.tm_hour = sTime.Hours;
now.tm_min = sTime.Minutes;
now.tm_sec = sTime.Seconds;
now.tm_year = sDate.Year + 100;
now.tm_mon = sDate.Month - 1;
now.tm_mday = sDate.Date;
*((time_t *)args) = mktime(&now);
break;
case RT_DEVICE_CTRL_RTC_SET_TIME:
rt_enter_critical();
/* converts calendar time time into local time. */
tm_now = localtime((const time_t *)args);
/* copy the statically located variable */
memcpy(&now, tm_now, sizeof(struct tm));
/* unlock scheduler. */
rt_exit_critical();
sTime.Hours = now.tm_hour;
sTime.Minutes = now.tm_min;
sTime.Seconds = now.tm_sec;
sDate.Year = now.tm_year - 100;
sDate.Month = now.tm_mon + 1;
sDate.Date = now.tm_mday;
HAL_RTC_SetTime(&hrtc, &sTime, RTC_FORMAT_BIN);
HAL_RTC_SetDate(&hrtc, &sDate, RTC_FORMAT_BIN);
break;
}
return RT_EOK;
}
static rt_err_t stm32_rtc_init(struct rt_device *dev)
{
return RT_EOK;
}
static rt_err_t stm32_rtc_open(struct rt_device *dev, rt_uint16_t oflag)
{
return RT_EOK;
}
static rt_err_t stm32_rtc_close(struct rt_device *dev)
{
return RT_EOK;
}
static rt_size_t stm32_rtc_read(struct rt_device *dev,
rt_off_t pos,
void *buffer,
rt_size_t size)
{
stm32_rtc_control(dev, RT_DEVICE_CTRL_RTC_GET_TIME, buffer);
return size;
}
static rt_size_t stm32_rtc_write(struct rt_device *dev,
rt_off_t pos,
const void *buffer,
rt_size_t size)
{
stm32_rtc_control(dev, RT_DEVICE_CTRL_RTC_SET_TIME, (void *)buffer);
return size;
}
struct rt_device rtc_device;
int rt_hw_rtc_init(void)
{
MX_RTC_Init();
rtc_device.type = RT_Device_Class_RTC;
rtc_device.rx_indicate = RT_NULL;
rtc_device.tx_complete = RT_NULL;
rtc_device.init = stm32_rtc_init;
rtc_device.open = stm32_rtc_open;
rtc_device.close = stm32_rtc_close;
rtc_device.read = stm32_rtc_read;
rtc_device.write = stm32_rtc_write;
rtc_device.control = stm32_rtc_control;
rtc_device.user_data = RT_NULL;
/* register a character device */
return rt_device_register(&rtc_device, "rtc", RT_DEVICE_FLAG_RDWR);
}
INIT_BOARD_EXPORT(rt_hw_rtc_init);
static void rtc_set(uint8_t argc, char **argv)
{
rt_device_t rtc = rt_device_find("rtc");
RT_ASSERT(rtc != NULL);
struct tm now = {
.tm_hour = 10,
.tm_min = 35,
.tm_sec = 0,
.tm_year = 2018 - 1900,
.tm_mon = 10 - 1,
.tm_mday = 23,
};
time_t tim = mktime(&now);
rt_device_control(rtc, RT_DEVICE_CTRL_RTC_SET_TIME, &tim);
int ret = rt_device_write(rtc, 0, &tim, 0);
}
MSH_CMD_EXPORT(rtc_set, rtc_set yyyy mm dd hh mm ss);
static void rtc_get(uint8_t argc, char **argv)
{
rt_device_t rtc = rt_device_find("rtc");
RT_ASSERT(rtc != NULL);
struct tm *tm_now;
time_t tim;
struct tm now;
rt_device_control(rtc, RT_DEVICE_CTRL_RTC_GET_TIME, &tim);
rt_enter_critical();
tm_now = localtime(&tim);
memcpy(&now, tm_now, sizeof(struct tm));
rt_exit_critical();
rt_kprintf("%d/%d/%d %d:%d:%d\n", now.tm_year + 1900, now.tm_mon + 1, now.tm_mday, now.tm_hour, now.tm_min, now.tm_sec);
}
MSH_CMD_EXPORT(rtc_get, rtc_get);
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