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/*
* Copyright (c) 2006-2022, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-08-31 AisinoChip first add to bsp
*/
#include "board.h"
#include <sys/time.h>
#include <rtdevice.h>
#ifdef BSP_USING_RTC
static RTC_ConfigTypeDef RTC_Handle;
rt_inline rt_uint8_t dec2hex(rt_uint8_t dec)
{
return ((dec / 10) << 4) + (dec % 10);
}
rt_inline rt_uint8_t hex2dec(rt_uint8_t hex)
{
return ((hex / 16) * 10) + (hex % 16);
}
static time_t get_rtc_timestamp(void)
{
RTC_TimeTypeDef RTC_TimeStruct = {0};
RTC_DateTypeDef RTC_DateStruct = {0};
struct tm tm_new = {0};
HAL_RTC_GetTime(&RTC_TimeStruct);
HAL_RTC_GetDate(&RTC_DateStruct);
tm_new.tm_sec = hex2dec(RTC_TimeStruct.u8_Seconds);
tm_new.tm_min = hex2dec(RTC_TimeStruct.u8_Minutes);
tm_new.tm_hour = hex2dec(RTC_TimeStruct.u8_Hours);
tm_new.tm_mday = hex2dec(RTC_DateStruct.u8_Date);
tm_new.tm_mon = hex2dec(RTC_DateStruct.u8_Month) - 1;
tm_new.tm_year = hex2dec(RTC_DateStruct.u8_Year) + 100;
return timegm(&tm_new);
}
static rt_err_t set_rtc_time_stamp(time_t time_stamp)
{
RTC_TimeTypeDef RTC_TimeStruct = {0};
RTC_DateTypeDef RTC_DateStruct = {0};
struct tm now;
gmtime_r(&time_stamp, &now);
if (now.tm_year < 100)
{
return -RT_ERROR;
}
RTC_TimeStruct.u8_Seconds = dec2hex(now.tm_sec);
RTC_TimeStruct.u8_Minutes = dec2hex(now.tm_min);
RTC_TimeStruct.u8_Hours = dec2hex(now.tm_hour);
RTC_DateStruct.u8_Date = dec2hex(now.tm_mday);
RTC_DateStruct.u8_Month = dec2hex(now.tm_mon + 1);
RTC_DateStruct.u8_Year = dec2hex(now.tm_year - 100);
RTC_DateStruct.u8_WeekDay = dec2hex(now.tm_wday) + 1;
HAL_RTC_SetTime(&RTC_TimeStruct);
HAL_RTC_SetDate(&RTC_DateStruct);
return RT_EOK;
}
static rt_err_t _rtc_init(void)
{
RTC_Handle.u32_ClockSource = RTC_CLOCK_XTL;
RTC_Handle.u32_Compensation = COMPENSATION_INCREASE;
RTC_Handle.u32_CompensationValue = 0x05;
HAL_RTC_Config(&RTC_Handle);
return RT_EOK;
}
static rt_err_t _rtc_get_secs(void *args)
{
*(rt_uint32_t *)args = get_rtc_timestamp();
return RT_EOK;
}
static rt_err_t _rtc_set_secs(void *args)
{
rt_err_t result = RT_EOK;
if (set_rtc_time_stamp(*(rt_uint32_t *)args))
{
result = -RT_ERROR;
}
return result;
}
static const struct rt_rtc_ops acm32_rtc_ops =
{
_rtc_init,
_rtc_get_secs,
_rtc_set_secs,
RT_NULL,
RT_NULL,
RT_NULL,
RT_NULL,
};
static rt_rtc_dev_t acm32_rtc_dev;
static int rt_hw_rtc_init(void)
{
acm32_rtc_dev.ops = &acm32_rtc_ops;
return rt_hw_rtc_register(&acm32_rtc_dev, "rtc", RT_DEVICE_FLAG_RDWR, RT_NULL);
}
INIT_DEVICE_EXPORT(rt_hw_rtc_init);
#endif /* BSP_USING_RTC */
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