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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2022-05-16 shelton first version
* 2023-04-08 shelton add support f423
* 2023-10-18 shelton add support f402/f405
* 2024-04-12 shelton add support a403a and a423
* 2024-08-30 shelton add support m412 and m416
* 2024-12-18 shelton add support f455/f456 and f457
*/
#include <rtthread.h>
#include <rtdevice.h>
#include <sys/time.h>
#include "drv_common.h"
#ifdef BSP_USING_RTC
//#define DRV_DEBUG
#define LOG_TAG "drv.rtc"
#include <drv_log.h>
#define BKUP_REG_DATA 0xA5A5
#if defined (SOC_SERIES_AT32F403A) || defined (SOC_SERIES_AT32F407) || \
defined (SOC_SERIES_AT32F413) || defined (SOC_SERIES_AT32A403A)
#define Alarm_IRQn RTCAlarm_IRQn
#define Alarm_IRQHandler RTCAlarm_IRQHandler
#elif defined (SOC_SERIES_AT32F421) || defined (SOC_SERIES_AT32F425)
#define Alarm_IRQn RTC_IRQn
#define Alarm_IRQHandler RTC_IRQHandler
#else
#define Alarm_IRQn ERTCAlarm_IRQn
#define Alarm_IRQHandler ERTCAlarm_IRQHandler
#endif
struct rtc_device_object
{
rt_rtc_dev_t rtc_dev;
#ifdef RT_USING_ALARM
struct rt_rtc_wkalarm wkalarm;
#endif
};
static struct rtc_device_object rtc_device;
static time_t get_rtc_timestamp(void)
{
#if defined (SOC_SERIES_AT32F435) || defined (SOC_SERIES_AT32F437) || \
defined (SOC_SERIES_AT32F415) || defined (SOC_SERIES_AT32F421) || \
defined (SOC_SERIES_AT32F425) || defined (SOC_SERIES_AT32F423) || \
defined (SOC_SERIES_AT32F402) || defined (SOC_SERIES_AT32F405) || \
defined (SOC_SERIES_AT32A423) || defined (SOC_SERIES_AT32M412) || \
defined (SOC_SERIES_AT32M416) || defined (SOC_SERIES_AT32F455) || \
defined (SOC_SERIES_AT32F456) || defined (SOC_SERIES_AT32F457)
struct tm tm_new;
ertc_time_type ertc_time_struct;
ertc_calendar_get(&ertc_time_struct);
tm_new.tm_sec = ertc_time_struct.sec;
tm_new.tm_min = ertc_time_struct.min;
tm_new.tm_hour = ertc_time_struct.hour;
tm_new.tm_mday = ertc_time_struct.day;
tm_new.tm_mon = ertc_time_struct.month - 1;
tm_new.tm_year = ertc_time_struct.year + 100;
LOG_D("get rtc time.");
return timegm(&tm_new);
#else
return rtc_counter_get();
#endif
}
static rt_err_t set_rtc_time_stamp(time_t time_stamp)
{
#if defined (SOC_SERIES_AT32F435) || defined (SOC_SERIES_AT32F437) || \
defined (SOC_SERIES_AT32F415) || defined (SOC_SERIES_AT32F421) || \
defined (SOC_SERIES_AT32F425) || defined (SOC_SERIES_AT32F423) || \
defined (SOC_SERIES_AT32F402) || defined (SOC_SERIES_AT32F405) || \
defined (SOC_SERIES_AT32A423) || defined (SOC_SERIES_AT32M412) || \
defined (SOC_SERIES_AT32M416) || defined (SOC_SERIES_AT32F455) || \
defined (SOC_SERIES_AT32F456) || defined (SOC_SERIES_AT32F457)
struct tm now;
gmtime_r(&time_stamp, &now);
if (now.tm_year < 100)
{
return -RT_ERROR;
}
/* set time */
if(ertc_time_set(now.tm_hour, now.tm_min, now.tm_sec, ERTC_AM) != SUCCESS)
{
return -RT_ERROR;
}
/* set date */
if(ertc_date_set(now.tm_year - 100, now.tm_mon + 1, now.tm_mday, now.tm_wday + 1) != SUCCESS)
{
return -RT_ERROR;
}
LOG_D("set rtc time.");
/* indicator for the ertc configuration */
ertc_bpr_data_write(ERTC_DT1, BKUP_REG_DATA);
#else
/* set the rtc counter value */
rtc_counter_set(time_stamp);
/* wait until last write operation on rtc registers has finished */
rtc_wait_config_finish();
LOG_D("set rtc time.");
bpr_data_write(BPR_DATA1, BKUP_REG_DATA);
#endif
return RT_EOK;
}
static rt_err_t rt_rtc_config(void)
{
/* allow access to pattery powered domain */
pwc_battery_powered_domain_access(TRUE);
#if defined (SOC_SERIES_AT32F435) || defined (SOC_SERIES_AT32F437) || \
defined (SOC_SERIES_AT32F415) || defined (SOC_SERIES_AT32F421) || \
defined (SOC_SERIES_AT32F425) || defined (SOC_SERIES_AT32F423) || \
defined (SOC_SERIES_AT32F402) || defined (SOC_SERIES_AT32F405) || \
defined (SOC_SERIES_AT32A423) || defined (SOC_SERIES_AT32M412) || \
defined (SOC_SERIES_AT32M416) || defined (SOC_SERIES_AT32F455) || \
defined (SOC_SERIES_AT32F456) || defined (SOC_SERIES_AT32F457)
/* select rtc clock source */
#ifdef BSP_RTC_USING_LICK
crm_ertc_clock_select(CRM_ERTC_CLOCK_LICK);
#else
crm_ertc_clock_select(CRM_ERTC_CLOCK_LEXT);
#endif /* BSP_RTC_USING_LICK */
/* enable rtc */
crm_ertc_clock_enable(TRUE);
/* wait for ertc registers update */
ertc_wait_update();
if (ertc_bpr_data_read(ERTC_DT1)!= BKUP_REG_DATA)
{
LOG_I("RTC hasn't been configured, please use <date> command to config.");
/* configure the ertc divider */
ertc_divider_set(0x7F, 0xFF);
/* configure the ertc hour mode */
ertc_hour_mode_set(ERTC_HOUR_MODE_24);
}
#else
#ifdef BSP_RTC_USING_LICK
crm_rtc_clock_select(CRM_RTC_CLOCK_LICK);
#else
crm_rtc_clock_select(CRM_RTC_CLOCK_LEXT);
#endif /* BSP_RTC_USING_LICK */
/* enable rtc */
crm_rtc_clock_enable(TRUE);
/* wait for rtc registers update finish */
rtc_wait_update_finish();
/* wait until last write operation on rtc registers has finished */
rtc_wait_config_finish();
if (bpr_data_read(BPR_DATA1) != BKUP_REG_DATA)
{
LOG_I("RTC hasn't been configured, please use <date> command to config.");
/* set rtc divider: set rtc period to 1sec */
rtc_divider_set(32767);
/* wait until last write operation on rtc registers has finished */
rtc_wait_config_finish();
}
#endif
return RT_EOK;
}
static rt_err_t _rtc_init(void)
{
crm_periph_clock_enable(CRM_PWC_PERIPH_CLOCK, TRUE);
#if defined (SOC_SERIES_AT32F403A) || defined (SOC_SERIES_AT32F407) || \
defined (SOC_SERIES_AT32F413) || defined (SOC_SERIES_AT32A403A)
crm_periph_clock_enable(CRM_BPR_PERIPH_CLOCK, TRUE);
#endif
#ifdef BSP_RTC_USING_LICK
crm_clock_source_enable(CRM_CLOCK_SOURCE_LICK, TRUE);
while(crm_flag_get(CRM_LICK_STABLE_FLAG) == RESET);
#else
pwc_battery_powered_domain_access(TRUE);
crm_clock_source_enable(CRM_CLOCK_SOURCE_LEXT, TRUE);
while(crm_flag_get(CRM_LEXT_STABLE_FLAG) == RESET);
#endif /* BSP_RTC_USING_LICK */
if (rt_rtc_config() != RT_EOK)
{
LOG_E("rtc init failed.");
return -RT_ERROR;
}
return RT_EOK;
}
static rt_err_t _rtc_get_secs(time_t *args)
{
*(rt_uint32_t *)args = get_rtc_timestamp();
LOG_D("RTC: get rtc_time %x\n", *(rt_uint32_t *)args);
return RT_EOK;
}
static rt_err_t _rtc_set_secs(time_t *args)
{
rt_err_t result = RT_EOK;
if (set_rtc_time_stamp(*(rt_uint32_t *)args))
{
result = -RT_ERROR;
}
LOG_D("RTC: set rtc_time %x\n", *(rt_uint32_t *)args);
return result;
}
#ifdef RT_USING_ALARM
static rt_err_t rtc_alarm_time_set(struct rtc_device_object* p_dev)
{
exint_init_type exint_init_struct;
#if defined (SOC_SERIES_AT32F403A) || defined (SOC_SERIES_AT32F407) || \
defined (SOC_SERIES_AT32F413) || defined (SOC_SERIES_AT32A403A)
struct tm tm_new;
time_t sec_count;
#endif
/* config the exint line of the rtc alarm */
exint_init_struct.line_select = EXINT_LINE_17;
exint_init_struct.line_enable = TRUE;
exint_init_struct.line_mode = EXINT_LINE_INTERRUPUT;
exint_init_struct.line_polarity = EXINT_TRIGGER_RISING_EDGE;
exint_init(&exint_init_struct);
if (p_dev->wkalarm.enable)
{
nvic_irq_enable(Alarm_IRQn, 0, 0);
#if defined (SOC_SERIES_AT32F403A) || defined (SOC_SERIES_AT32F407) || \
defined (SOC_SERIES_AT32F413) || defined (SOC_SERIES_AT32A403A)
/* clear alarm flag */
rtc_flag_clear(RTC_TA_FLAG);
/* wait for the register write to complete */
rtc_wait_config_finish();
/* enable alarm interrupt */
rtc_interrupt_enable(RTC_TA_INT, TRUE);
/* wait for the register write to complete */
rtc_wait_config_finish();
tm_new.tm_sec = p_dev->wkalarm.tm_sec;
tm_new.tm_min = p_dev->wkalarm.tm_min;
tm_new.tm_hour = p_dev->wkalarm.tm_hour;
tm_new.tm_mday = p_dev->wkalarm.tm_mday;
tm_new.tm_mon = p_dev->wkalarm.tm_mon;
tm_new.tm_year = p_dev->wkalarm.tm_year;
sec_count = timegm(&tm_new);
rtc_alarm_set(sec_count);
/* wait for the register write to complete */
rtc_wait_config_finish();
#else
ertc_alarm_enable(ERTC_ALA, FALSE);
ertc_flag_clear(ERTC_ALAF_FLAG);
ertc_alarm_mask_set(ERTC_ALA, ERTC_ALARM_MASK_DATE_WEEK);
ertc_alarm_week_date_select(ERTC_ALA, ERTC_SLECT_DATE);
ertc_alarm_set(ERTC_ALA, p_dev->wkalarm.tm_mday, p_dev->wkalarm.tm_hour, \
p_dev->wkalarm.tm_min, p_dev->wkalarm.tm_sec, ERTC_24H);
ertc_interrupt_enable(ERTC_ALA_INT, TRUE);
ertc_alarm_enable(ERTC_ALA, TRUE);
ertc_flag_clear(ERTC_ALAF_FLAG);
#endif
}
return RT_EOK;
}
void Alarm_IRQHandler(void)
{
rt_interrupt_enter();
#if defined (SOC_SERIES_AT32F403A) || defined (SOC_SERIES_AT32F407) || \
defined (SOC_SERIES_AT32F413) || defined (SOC_SERIES_AT32A403A)
if(rtc_flag_get(RTC_TA_FLAG) != RESET)
{
/* clear exint line flag */
exint_flag_clear(EXINT_LINE_17);
/* wait for the register write to complete */
rtc_wait_config_finish();
/* clear alarm flag */
rtc_flag_clear(RTC_TA_FLAG);
/* wait for the register write to complete */
rtc_wait_config_finish();
rt_alarm_update(&rtc_device.rtc_dev.parent, 1);
}
#else
if(ertc_flag_get(ERTC_ALAF_FLAG) != RESET)
{
/* clear alarm flag */
ertc_flag_clear(ERTC_ALAF_FLAG);
/* clear exint flag */
exint_flag_clear(EXINT_LINE_17);
rt_alarm_update(&rtc_device.rtc_dev.parent, 1);
}
#endif
rt_interrupt_leave();
}
#endif
static rt_err_t _rtc_get_alarm(struct rt_rtc_wkalarm *alarm)
{
#ifdef RT_USING_ALARM
*alarm = rtc_device.wkalarm;
LOG_D("GET_ALARM %d:%d:%d",rtc_device.wkalarm.tm_hour,
rtc_device.wkalarm.tm_min,rtc_device.wkalarm.tm_sec);
return RT_EOK;
#else
return -RT_ERROR;
#endif
}
static rt_err_t _rtc_set_alarm(struct rt_rtc_wkalarm *alarm)
{
#ifdef RT_USING_ALARM
LOG_D("RT_DEVICE_CTRL_RTC_SET_ALARM");
if (alarm != RT_NULL)
{
rtc_device.wkalarm.enable = alarm->enable;
rtc_device.wkalarm.tm_year = alarm->tm_year;
rtc_device.wkalarm.tm_mon = alarm->tm_mon;
rtc_device.wkalarm.tm_mday = alarm->tm_mday;
rtc_device.wkalarm.tm_hour = alarm->tm_hour;
rtc_device.wkalarm.tm_min = alarm->tm_min;
rtc_device.wkalarm.tm_sec = alarm->tm_sec;
rtc_alarm_time_set(&rtc_device);
}
else
{
LOG_E("RT_DEVICE_CTRL_RTC_SET_ALARM error!!");
return -RT_ERROR;
}
LOG_D("SET_ALARM %d:%d:%d",alarm->tm_hour,
alarm->tm_min, alarm->tm_sec);
return RT_EOK;
#else
return -RT_ERROR;
#endif
}
static rt_err_t _rtc_get_timeval(struct timeval *tv)
{
tv->tv_sec = get_rtc_timestamp();
return RT_EOK;
}
static const struct rt_rtc_ops _rtc_ops =
{
_rtc_init,
_rtc_get_secs,
_rtc_set_secs,
_rtc_get_alarm,
_rtc_set_alarm,
_rtc_get_timeval,
RT_NULL,
};
int rt_hw_rtc_init(void)
{
rt_err_t result;
rtc_device.rtc_dev.ops = &_rtc_ops;
result = rt_hw_rtc_register(&rtc_device.rtc_dev, "rtc", RT_DEVICE_FLAG_RDWR, RT_NULL);
if (result != RT_EOK)
{
LOG_E("rtc register err code: %d", result);
return result;
}
LOG_D("rtc init success");
return RT_EOK;
}
INIT_DEVICE_EXPORT(rt_hw_rtc_init);
#endif /* BSP_USING_RTC */
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