/* * Copyright (c) 2006-2022, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2020-09-08 Chenyingchun first version */ #include "board.h" #include #include #include #include #include #ifdef BSP_USING_ONCHIP_RTC #define LOG_TAG "drv.rtc" #define DBG_LVL DBG_LOG #include /* 2018-01-30 14:44:50 = RTC_TIME_INIT(2018, 1, 30, 14, 44, 50) */ #define RTC_TIME_INIT(year, month, day, hour, minute, second) \ {.tm_year = year - 1900, .tm_mon = month - 1, .tm_mday = day, .tm_hour = hour, .tm_min = minute, .tm_sec = second} #ifndef ONCHIP_RTC_TIME_DEFAULT #define ONCHIP_RTC_TIME_DEFAULT RTC_TIME_INIT(2018, 1, 1, 0, 0 ,0) #endif #ifndef RTC_INSTANCE_ID #define RTC_INSTANCE_ID (2) #endif #define TICK_FREQUENCE_HZ (RT_TICK_PER_SECOND) // RTC tick frequence, in HZ static struct rt_rtc_device rtc; static time_t init_time; static uint32_t tick = 0; static void rtc_callback(nrfx_rtc_int_type_t int_type) { static uint32_t count = 0; if (int_type == NRFX_RTC_INT_TICK) { count++; if((count % TICK_FREQUENCE_HZ) == 0) { tick++; } } } static rt_err_t rt_rtc_config(struct rt_device *dev) { #define SYSTICK_CLOCK_HZ (32768UL) #define RTC_PRESCALER ((uint32_t) (NRFX_ROUNDED_DIV(SYSTICK_CLOCK_HZ, TICK_FREQUENCE_HZ) - 1)) const nrfx_rtc_t rtc_instance = NRFX_RTC_INSTANCE(RTC_INSTANCE_ID); nrf_clock_lf_src_set(NRF_CLOCK, (nrf_clock_lfclk_t)NRFX_CLOCK_CONFIG_LF_SRC); nrfx_clock_lfclk_start(); //Initialize RTC instance nrfx_rtc_config_t config = NRFX_RTC_DEFAULT_CONFIG; config.prescaler = RTC_PRESCALER; nrfx_rtc_init(&rtc_instance, &config, rtc_callback); nrfx_rtc_tick_enable(&rtc_instance, true); //Power on RTC instance nrfx_rtc_enable(&rtc_instance); return RT_EOK; } static rt_err_t rt_rtc_control(rt_device_t dev, int cmd, void *args) { time_t *time; RT_ASSERT(dev != RT_NULL); switch (cmd) { case RT_DEVICE_CTRL_RTC_GET_TIME: { time = (time_t *) args; *time = init_time + tick; break; } case RT_DEVICE_CTRL_RTC_SET_TIME: { time = (time_t *) args; init_time = *time - tick; break; } } return RT_EOK; } #ifdef RT_USING_DEVICE_OPS const static struct rt_device_ops rtc_ops = { RT_NULL, RT_NULL, RT_NULL, RT_NULL, RT_NULL, rt_rtc_control }; #endif int rt_hw_rtc_init(void) { rt_err_t result; result = rt_hw_rtc_register(&rtc, "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_ONCHIP_RTC */