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