152 lines
4.2 KiB
C
152 lines
4.2 KiB
C
/*
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* File :_rtc.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006 - 2017, RT-Thread Development Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Change Logs:
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* Date Author Notes
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* 2017-11-06 Haley the first version
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*/
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#include <rtthread.h>
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#include <rtdevice.h>
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#include "am_mcu_apollo.h"
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#define XT 1
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#define LFRC 2
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#define RTC_CLK_SRC XT
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//connect am drv to rt drv.
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static rt_err_t rt_rtc_open(rt_device_t dev, rt_uint16_t oflag)
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{
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if (dev->rx_indicate != RT_NULL)
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{
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/* Open Interrupt */
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}
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return RT_EOK;
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}
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static rt_size_t rt_rtc_read(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size)
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{
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return 0;
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}
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static rt_err_t rt_rtc_control(rt_device_t dev, int cmd, void *args)
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{
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time_t *time;
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struct tm time_temp;
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struct tm* time_new;
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am_hal_rtc_time_t hal_time;
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RT_ASSERT(dev != RT_NULL);
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rt_memset(&time_temp, 0, sizeof(struct tm));
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switch (cmd)
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{
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case RT_DEVICE_CTRL_RTC_GET_TIME:
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time = (time_t *)args;
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/* Get the current Time */
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am_hal_rtc_time_get(&hal_time);
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/* Years since 1900 : 0-99 range */
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time_temp.tm_year = hal_time.ui32Year + 2000 - 1900;
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/* Months *since* january 0-11 : RTC_Month_Date_Definitions 1 - 12 */
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time_temp.tm_mon = hal_time.ui32Month - 1;
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/* Day of the month 1-31 : 1-31 range */
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time_temp.tm_mday = hal_time.ui32DayOfMonth;
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/* Hours since midnight 0-23 : 0-23 range */
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time_temp.tm_hour = hal_time.ui32Hour;
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/* Minutes 0-59 : the 0-59 range */
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time_temp.tm_min = hal_time.ui32Minute;
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/* Seconds 0-59 : the 0-59 range */
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time_temp.tm_sec = hal_time.ui32Second;
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*time = mktime(&time_temp);
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break;
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case RT_DEVICE_CTRL_RTC_SET_TIME:
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time = (time_t *)args;
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time_new = localtime(time);
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hal_time.ui32Hour = time_new->tm_hour;
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hal_time.ui32Minute = time_new->tm_min;
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hal_time.ui32Second = time_new->tm_sec;
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hal_time.ui32Hundredths = 00;
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hal_time.ui32Weekday = time_new->tm_wday;
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hal_time.ui32DayOfMonth = time_new->tm_mday;
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hal_time.ui32Month = time_new->tm_mon + 1;
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hal_time.ui32Year = time_new->tm_year + 1900 - 2000;
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hal_time.ui32Century = 0;
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am_hal_rtc_time_set(&hal_time);
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break;
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}
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return RT_EOK;
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}
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int rt_hw_rtc_init(void)
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{
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static struct rt_device rtc;
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#if RTC_CLK_SRC == LFRC
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/* Enable the LFRC for the RTC */
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am_hal_clkgen_osc_start(AM_HAL_CLKGEN_OSC_LFRC);
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/* Select LFRC for RTC clock source */
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am_hal_rtc_osc_select(AM_HAL_RTC_OSC_LFRC);
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#endif
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#if RTC_CLK_SRC == XT
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/* Enable the XT for the RTC */
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//am_hal_clkgen_osc_start(AM_HAL_CLKGEN_OSC_LFRC);
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am_hal_clkgen_osc_start(AM_HAL_CLKGEN_OSC_XT);
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/* Select XT for RTC clock source */
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am_hal_rtc_osc_select(AM_HAL_RTC_OSC_XT);
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#endif
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/* Enable the RTC */
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am_hal_rtc_osc_enable();
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/* register rtc device */
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rtc.type = RT_Device_Class_RTC;
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rtc.init = RT_NULL;
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rtc.open = rt_rtc_open;
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rtc.close = RT_NULL;
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rtc.read = rt_rtc_read;
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rtc.write = RT_NULL;
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rtc.control = rt_rtc_control;
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/* no private */
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rtc.user_data = RT_NULL;
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rt_device_register(&rtc, "rtc", RT_DEVICE_FLAG_RDWR);
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return 0;
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}
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#ifdef RT_USING_COMPONENTS_INIT
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INIT_BOARD_EXPORT(rt_hw_rtc_init);
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#endif
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/*@}*/
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