132 lines
2.8 KiB
C
132 lines
2.8 KiB
C
/*
|
|
* Copyright (c) 2006-2023, RT-Thread Development Team
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Change Logs:
|
|
* Date Author Notes
|
|
* 2021-08-10 charlown first version
|
|
*/
|
|
|
|
#include <rtthread.h>
|
|
#include <rtdevice.h>
|
|
#include <sys/time.h>
|
|
#include "board.h"
|
|
|
|
#ifdef BSP_USING_RTC
|
|
|
|
#define LOG_TAG "drv.rtc"
|
|
#include "drv_log.h"
|
|
|
|
#ifndef BKP_DR1
|
|
#define BKP_DR1 RT_NULL
|
|
#endif
|
|
|
|
#define BKUP_REG_DATA 0xA5A5
|
|
|
|
static struct rt_rtc_device rtc;
|
|
|
|
static void rt_rtc_config(void)
|
|
{
|
|
/* Allow access to BKP Domain */
|
|
PWR_BackupAccessCmd(ENABLE);
|
|
|
|
#if defined(BSP_USING_RTC_LSI) && defined(LSI_VALUE)
|
|
RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI);
|
|
#else
|
|
RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE);
|
|
#endif
|
|
|
|
RCC_RTCCLKCmd(ENABLE);
|
|
|
|
RTC_WaitForLastTask();
|
|
|
|
RTC_WaitForSynchro();
|
|
|
|
if (BKP_ReadBackupRegister(BKP_DR1) != BKUP_REG_DATA)
|
|
{
|
|
LOG_I("RTC hasn't been configured, please use <date> command to config.");
|
|
/* Set RTC prescaler: set RTC period to 1sec */
|
|
RTC_SetPrescaler(32767);
|
|
/* Wait until last write operation on RTC registers has finished */
|
|
RTC_WaitForLastTask();
|
|
}
|
|
}
|
|
|
|
static rt_err_t ch32f1_rt_rtc_init(void)
|
|
{
|
|
|
|
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);
|
|
PWR_BackupAccessCmd(ENABLE);
|
|
|
|
#if defined(BSP_USING_RTC_LSI) && defined(LSI_VALUE)
|
|
RCC_LSICmd(ENABLE);
|
|
|
|
while (RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET)
|
|
;
|
|
#else
|
|
|
|
RCC_LSEConfig(RCC_LSE_ON);
|
|
while (RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET)
|
|
;
|
|
#endif
|
|
|
|
rt_rtc_config();
|
|
|
|
return RT_EOK;
|
|
}
|
|
|
|
static rt_err_t ch32f1_get_secs(void *args)
|
|
{
|
|
*(rt_uint32_t *)args = RTC_GetCounter();
|
|
LOG_D("RTC: get rtc_time %x\n", *(rt_uint32_t *)args);
|
|
|
|
return RT_EOK;
|
|
}
|
|
|
|
static rt_err_t ch32f1_set_secs(void *args)
|
|
{
|
|
/* Set the RTC counter value */
|
|
RTC_SetCounter(*(rt_uint32_t *)args);
|
|
/* Wait until last write operation on RTC registers has finished */
|
|
RTC_WaitForLastTask();
|
|
|
|
LOG_D("set rtc time.");
|
|
BKP_WriteBackupRegister(BKP_DR1, BKUP_REG_DATA);
|
|
|
|
LOG_D("RTC: set rtc_time %x\n", *(rt_uint32_t *)args);
|
|
|
|
return RT_EOK;
|
|
}
|
|
|
|
const static struct rt_rtc_ops rtc_ops =
|
|
{
|
|
.init = ch32f1_rt_rtc_init,
|
|
.get_secs = ch32f1_get_secs,
|
|
.set_secs = ch32f1_set_secs,
|
|
.get_alarm = RT_NULL,
|
|
.set_alarm = RT_NULL,
|
|
.get_timeval = RT_NULL,
|
|
.set_timeval = RT_NULL};
|
|
|
|
int rt_hw_rtc_init(void)
|
|
{
|
|
rt_err_t result;
|
|
|
|
rtc.ops = &rtc_ops;
|
|
|
|
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_RTC */
|