/* * 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 */ #include #include #include #include "drv_common.h" #ifdef BSP_USING_RTC //#define DRV_DEBUG #define LOG_TAG "drv.rtc" #include #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) 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) 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) /* 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 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 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 */