/* * Copyright (c) 2006-2023, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2022-03-04 stevetong459 first version * 2022-07-15 Aligagago add apm32F4 serie MCU support * 2022-12-26 luobeihai add apm32F0 serie MCU support * 2023-03-18 luobeihai fix RT-Thread Studio compile error bug */ #include "board.h" #include #ifdef BSP_USING_ONCHIP_RTC #define DBG_TAG "drv.rtc" #define DBG_LVL DBG_INFO #include #ifndef LSI_VALUE #define LSI_VALUE ((uint32_t)40000) #endif #ifndef LSE_VALUE #define LSE_VALUE ((uint32_t)32768) #endif #define DRV_RTC_TIME_OUT 0xFFFFF static rt_rtc_dev_t apm32_rtc_dev; static rt_uint8_t rtc_init_flag = RESET; /** * @brief This function will initialize the rtc on chip. * * @return RT_EOK indicates successful initialize, other value indicates failed; */ static rt_err_t apm32_rtc_init(void) { volatile rt_uint32_t counter = 0; /* Enable RTC Clock */ #if defined(SOC_SERIES_APM32F1) RCM_EnableAPB1PeriphClock(RCM_APB1_PERIPH_PMU | RCM_APB1_PERIPH_BAKR); #elif defined(SOC_SERIES_APM32F0) || defined(SOC_SERIES_APM32F4) RCM_EnableAPB1PeriphClock(RCM_APB1_PERIPH_PMU); #endif PMU_EnableBackupAccess(); /* Config RTC clock */ #ifdef BSP_RTC_USING_LSI RCM_EnableLSI(); while (!RCM_ReadStatusFlag(RCM_FLAG_LSIRDY)) { if (++counter > DRV_RTC_TIME_OUT) { return -RT_ETIMEOUT; } } RCM_ConfigRTCCLK(RCM_RTCCLK_LSI); #else RCM_DisableLSI(); RCM_ConfigLSE(RCM_LSE_OPEN); while (!RCM_ReadStatusFlag(RCM_FLAG_LSERDY)) { if (++counter > DRV_RTC_TIME_OUT) { return -RT_ETIMEOUT; } } RCM_ConfigRTCCLK(RCM_RTCCLK_LSE); #endif /* BSP_RTC_USING_LSI */ RCM_EnableRTCCLK(); RTC_WaitForSynchro(); #if defined(SOC_SERIES_APM32F1) counter = 0; while (!RTC_ReadStatusFlag(RTC_FLAG_OC)) { if (++counter > DRV_RTC_TIME_OUT) { return -RT_ETIMEOUT; } } RTC_EnableConfigMode(); RTC_ClearStatusFlag(RTC_FLAG_OVR | RTC_FLAG_ALR | RTC_FLAG_SEC); #ifdef BSP_RTC_USING_LSI RTC_ConfigPrescaler(LSI_VALUE - 1); #else RTC_ConfigPrescaler(LSE_VALUE - 1); #endif /* BSP_RTC_USING_LSI */ #elif defined(SOC_SERIES_APM32F4) RTC_EnableInit(); RTC_Config_T rtcConfig; RTC_ConfigStructInit(&rtcConfig); RTC_Config(&rtcConfig); #elif defined(SOC_SERIES_APM32F0) RTC_EnableInit(); RTC_Config_T rtcConfig; RTC_ConfigStructInit(&rtcConfig); #ifdef BSP_RTC_USING_LSI rtcConfig.AsynchPrediv = 0x63; rtcConfig.SynchPrediv = 0x18F; #else rtcConfig.AsynchPrediv = 0x7F; rtcConfig.SynchPrediv = 0x130; #endif /* BSP_RTC_USING_LSI */ RTC_Config(&rtcConfig); #endif /* SOC_SERIES_APM32F1 */ if (!rtc_init_flag) { rtc_init_flag = SET; } return RT_EOK; } #if defined(SOC_SERIES_APM32F1) /** * @brief This function will initialize the rtc on chip. * * @return RT_EOK indicates successful initialize, other value indicates failed; */ static rt_err_t apm32_rtc_get_secs(void *args) { volatile rt_uint32_t counter = 0; while (!RTC_ReadStatusFlag(RTC_FLAG_OC)) { if (++counter > DRV_RTC_TIME_OUT) { return -RT_ETIMEOUT; } } *(rt_uint32_t *) args = RTC_ReadCounter(); return RT_EOK; } static rt_err_t apm32_rtc_set_secs(void *args) { volatile rt_uint32_t counter = 0; if (!rtc_init_flag) { apm32_rtc_init(); } while (!RTC_ReadStatusFlag(RTC_FLAG_OC)) { if (++counter > DRV_RTC_TIME_OUT) { return -RT_ETIMEOUT; } } RTC_ConfigCounter(*(rt_uint32_t *)args); return RT_EOK; } #elif defined(SOC_SERIES_APM32F0) || defined(SOC_SERIES_APM32F4) static rt_err_t apm32_rtc_get_timeval(void *args) { struct timeval *tv = (struct timeval *) args; #if defined(SOC_SERIES_APM32F0) RTC_TIME_T timeConfig; RTC_DATE_T dateConfig; #elif defined(SOC_SERIES_APM32F4) RTC_TimeConfig_T timeConfig; RTC_DateConfig_T dateConfig; #endif struct tm tm_new = {0}; RTC_ReadTime(RTC_FORMAT_BIN, &timeConfig); RTC_ReadDate(RTC_FORMAT_BIN, &dateConfig); tm_new.tm_sec = timeConfig.seconds; tm_new.tm_min = timeConfig.minutes; tm_new.tm_hour = timeConfig.hours; tm_new.tm_mday = dateConfig.date; tm_new.tm_mon = dateConfig.month - 1; tm_new.tm_year = dateConfig.year + 100; tv->tv_sec = timegm(&tm_new); return RT_EOK; } static rt_err_t set_rtc_time_stamp(time_t time_stamp) { #if defined(SOC_SERIES_APM32F0) RTC_TIME_T timeConfig; RTC_DATE_T dateConfig; #elif defined(SOC_SERIES_APM32F4) RTC_TimeConfig_T timeConfig; RTC_DateConfig_T dateConfig; #endif struct tm tm = {0}; if (!rtc_init_flag) { apm32_rtc_init(); } gmtime_r(&time_stamp, &tm); if (tm.tm_year < 100) { return -RT_ERROR; } timeConfig.seconds = tm.tm_sec ; timeConfig.minutes = tm.tm_min ; timeConfig.hours = tm.tm_hour; dateConfig.date = tm.tm_mday; #if defined(SOC_SERIES_APM32F4) dateConfig.month = (RTC_MONTH_T)(tm.tm_mon + 1); dateConfig.weekday = (RTC_WEEKDAY_T)(tm.tm_wday + 1); #else dateConfig.month = tm.tm_mon + 1 ; dateConfig.weekday = tm.tm_wday + 1; #endif dateConfig.year = tm.tm_year - 100; RTC_ConfigTime(RTC_FORMAT_BIN, &timeConfig); RTC_ConfigDate(RTC_FORMAT_BIN, &dateConfig); /* wait for set time completed */ for (int i = 0; i < 0xFFFF; i++); return RT_EOK; } /** * @brief This function will initialize the rtc on chip. * * @return RT_EOK indicates successful initialize, other value indicates failed; */ static rt_err_t apm32_rtc_get_secs(void *args) { struct timeval tv; apm32_rtc_get_timeval(&tv); *(rt_uint32_t *) args = tv.tv_sec; return RT_EOK; } static rt_err_t apm32_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; } #endif static const struct rt_rtc_ops apm32_rtc_ops = { apm32_rtc_init, apm32_rtc_get_secs, apm32_rtc_set_secs, RT_NULL, RT_NULL, #if defined(SOC_SERIES_APM32F0) || defined(SOC_SERIES_APM32F4) apm32_rtc_get_timeval, #else RT_NULL, #endif RT_NULL, }; /** * @brief RTC initialization function. * * @return RT_EOK indicates successful initialization, other value indicates failed; */ static int rt_hw_rtc_init(void) { rt_err_t result = RT_EOK; apm32_rtc_dev.ops = &apm32_rtc_ops; if (rt_hw_rtc_register(&apm32_rtc_dev, "rtc", RT_DEVICE_FLAG_RDWR, RT_NULL) != RT_EOK) { LOG_E("rtc init failed"); result = -RT_ERROR; } else { LOG_D("rtc init success"); } return result; } INIT_DEVICE_EXPORT(rt_hw_rtc_init); #endif /* BSP_USING_ONCHIP_RTC */