153 lines
3.0 KiB
C
153 lines
3.0 KiB
C
/*
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* Copyright (c) 2006-2023, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2018-03-15 Liuguang the first version.
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* 2019-07-19 Magicoe The first version for LPC55S6x
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*/
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#include <rtthread.h>
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#include <rtdevice.h>
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#include <sys/time.h>
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#include "drv_rtc.h"
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#include "fsl_common.h"
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#include "fsl_rtc.h"
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#ifdef RT_USING_RTC
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static rt_err_t lpc_get_timestamp(time_t *timestamp)
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{
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struct tm tm_new = {0};
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rtc_datetime_t rtcDate;
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/* Get date time */
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RTC_GetDatetime(RTC, &rtcDate);
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tm_new.tm_sec = rtcDate.second;
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tm_new.tm_min = rtcDate.minute;
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tm_new.tm_hour = rtcDate.hour;
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tm_new.tm_mday = rtcDate.day;
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tm_new.tm_mon = rtcDate.month - 1;
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tm_new.tm_year = rtcDate.year - 1900;
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timegm(&tm_new);
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*timestamp = timegm(&tm_new);
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return RT_EOK;
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}
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static int lpc_set_timestamp(time_t timestamp)
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{
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struct tm now;
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rtc_datetime_t rtcDate;
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gmtime_r(×tamp, &now);
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rtcDate.second = now.tm_sec ;
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rtcDate.minute = now.tm_min ;
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rtcDate.hour = now.tm_hour;
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rtcDate.day = now.tm_mday;
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rtcDate.month = now.tm_mon + 1;
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rtcDate.year = now.tm_year + 1900;
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/* RTC time counter has to be stopped before setting the date & time in the TSR register */
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RTC_StopTimer(RTC);
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/* Set RTC time to default */
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RTC_SetDatetime(RTC, &rtcDate);
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/* Start the RTC time counter */
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RTC_StartTimer(RTC);
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return RT_EOK;
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}
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static rt_err_t lpc_rtc_init(rt_device_t dev)
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{
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/* Init RTC */
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RTC_Init(RTC);
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/* Start the RTC time counter */
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RTC_StartTimer(RTC);
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return RT_EOK;
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}
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static rt_err_t lpc_rtc_open(rt_device_t dev, rt_uint16_t oflag)
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{
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return RT_EOK;
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}
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static rt_err_t lpc_rtc_close(rt_device_t dev)
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{
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return RT_EOK;
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}
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static rt_ssize_t lpc_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_ssize_t lpc_rtc_write(rt_device_t dev, rt_off_t pos, const 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 lpc_rtc_control(rt_device_t dev, int cmd, void *args)
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{
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RT_ASSERT(dev != RT_NULL);
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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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{
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lpc_get_timestamp(args);
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}
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break;
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case RT_DEVICE_CTRL_RTC_SET_TIME:
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{
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lpc_set_timestamp(*(time_t *)args);
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}
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break;
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default:
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return -RT_EINVAL;
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}
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return RT_EOK;
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}
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static struct rt_device device =
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{
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.type = RT_Device_Class_RTC,
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.init = lpc_rtc_init,
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.open = lpc_rtc_open,
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.close = lpc_rtc_close,
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.read = lpc_rtc_read,
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.write = lpc_rtc_write,
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.control = lpc_rtc_control,
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};
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int rt_hw_rtc_init(void)
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{
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rt_err_t ret = RT_EOK;
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ret = rt_device_register(&device, "rtc", RT_DEVICE_FLAG_RDWR);
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if(ret != RT_EOK)
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{
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return ret;
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}
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rt_device_open(&device, RT_DEVICE_OFLAG_RDWR);
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return RT_EOK;
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}
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INIT_DEVICE_EXPORT(rt_hw_rtc_init);
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#endif /*RT_USING_RTC */
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