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/*
* Copyright (c) 2021-2023 HPMicro
*
* SPDX-License-Identifier: BSD-3-Clause
*
* Change Logs:
* Date Author Notes
* 2021-09-19 HPMicro First version
* 2023-05-08 HPMicro Adapt RT-Thread V5.0.0
*/
#include "board.h"
#include "drv_rtc.h"
#include "hpm_rtc_drv.h"
#include "hpm_bpor_drv.h"
#include <rtthread.h>
#include <rtdevice.h>
#include <rtdbg.h>
#ifdef RT_USING_RTC
/*******************************************************************************************
*
* Prototypes
*
******************************************************************************************/
static rt_err_t hpm_rtc_init(rt_device_t dev);
static rt_err_t hpm_rtc_open(rt_device_t dev, rt_uint16_t oflag);
static rt_err_t hpm_rtc_close(rt_device_t dev);
static rt_ssize_t hpm_rtc_read(rt_device_t dev, rt_off_t pos, void *buf, rt_size_t size);
static rt_ssize_t hpm_rtc_write(rt_device_t dev, rt_off_t pos, const void *buf, rt_size_t size);
static rt_err_t hpm_rtc_control(rt_device_t dev, int cmd, void *args);
static time_t hpm_rtc_get_timestamp(void);
static int hpm_rtc_set_timestamp(time_t timestamp);
/*******************************************************************************************
*
* Variables
*
******************************************************************************************/
#ifdef RT_USING_DEVICE_OPS
const struct rt_device_ops hpm_rtc_ops = {
.init = hpm_rtc_init,
.open = hpm_rtc_open,
.close = hpm_rtc_close,
.read = hpm_rtc_read,
.write = hpm_rtc_write,
.control = hpm_rtc_control,
};
#endif
static struct rt_device hpm_rtc= {
.type = RT_Device_Class_RTC,
#ifdef RT_USING_DEVICE_OPS
.ops = &hpm_rtc_ops,
#else
.init = hpm_rtc_init,
.open = hpm_rtc_open,
.close = hpm_rtc_close,
.read = hpm_rtc_read,
.write = hpm_rtc_write,
.control = hpm_rtc_control,
#endif
};
/*******************************************************************************************
*
* Codes
*
******************************************************************************************/
static rt_err_t hpm_rtc_init(rt_device_t dev)
{
/* Enable Power retention mode for the battery domain */
bpor_enable_reg_value_retention(HPM_BPOR);
return RT_EOK;
}
static rt_err_t hpm_rtc_open(rt_device_t dev, rt_uint16_t oflag)
{
return RT_EOK;
}
static rt_err_t hpm_rtc_close(rt_device_t dev)
{
return RT_EOK;
}
static rt_ssize_t hpm_rtc_read(rt_device_t dev, rt_off_t pos, void *buf, rt_size_t size)
{
return 0;
}
static rt_ssize_t hpm_rtc_write(rt_device_t dev, rt_off_t pos, const void *buf, rt_size_t size)
{
return 0;
}
static rt_err_t hpm_rtc_control(rt_device_t dev, int cmd, void *args)
{
RT_ASSERT(dev != RT_NULL);
rt_err_t err = RT_EOK;
switch(cmd) {
case RT_DEVICE_CTRL_RTC_GET_TIME:
*(uint32_t *)args = hpm_rtc_get_timestamp();
break;
case RT_DEVICE_CTRL_RTC_SET_TIME:
hpm_rtc_set_timestamp(*(time_t *)args);
break;
default:
err = RT_EINVAL;
break;
}
return err;
}
static time_t hpm_rtc_get_timestamp(void)
{
time_t time = rtc_get_time(HPM_RTC);
return time;
}
static int hpm_rtc_set_timestamp(time_t timestamp)
{
(void)rtc_config_time(HPM_RTC, timestamp);
return RT_EOK;
}
int rt_hw_rtc_init(void)
{
rt_err_t err = RT_EOK;
err = rt_device_register(&hpm_rtc, "rtc", RT_DEVICE_FLAG_RDWR);
if (err != RT_EOK) {
LOG_E("rt device %s failed, status=%d\n", "rtc", err);
return err;
}
rt_device_open(&hpm_rtc, RT_DEVICE_FLAG_RDWR);
return RT_EOK;
}
INIT_DEVICE_EXPORT(rt_hw_rtc_init);
#endif /* RT_USING_RTC */
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