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/*
* File : drv_rtc.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2008 - 2012, 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
* 2016/7/28 Urey the first version
*/
#include <rthw.h>
#include <rtthread.h>
#include <rtdevice.h>
#include <stdio.h>
#include <stdint.h>
#include <time.h>
#include "board.h"
#include "drv_clock.h"
#include "drv_gpio.h"
#include "drv_ost.h"
#include "drv_rtc.h"
static rt_base_t rtc32k_ref = 0;
void rtc32k_enable(void)
{
if(++rtc32k_ref == 1)
gpio_set_func(GPIO_PORT_B,GPIO_Pin_26,GPIO_FUNC_0);
}
void rtc32k_disable(void)
{
if(--rtc32k_ref == 0)
gpio_set_func(GPIO_PORT_B,GPIO_Pin_26,GPIO_INPUT);
}
#if 0 /* not enable */
static void jz_rtc_interrupt(int vector,void *param)
{
if (rtc_read_reg(RTC_RTCCR) & RTC_RTCCR_AF) /* rtc alarm interrupt */
{
rtc_clr_reg(RTC_RTCCR, RTC_RTCCR_AF);
#ifdef AHB_MONITOR_PERIOD
// Stop and log the data, and the 1st of the data is INVALID.
MONITOR_LOG();
// Start the monitor.
MONITOR_START(MASTER_IPU, MEVENT_BUS_TRANS_CYCLE, MASTER_ALL, MEVENT_BUS_TRANS_CYCLE);
// Config the RTC alarm for the next time
rtc_write_reg(RTC_RTCSAR, rtc_read_reg(RTC_RTCSR) + AHB_MONITOR_PERIOD);
#else
printf("RTC alarm interrupt clean!\n");
rtc_alarm_handler();
#endif
}
else
{
rtc_clr_reg(RTC_RTCCR, RTC_RTCCR_1HZ);
}
}
#endif
void jz_rtc_init(void)
{
unsigned int tmpx , flag;
tmpx = rtc_read_reg(RTC_BASE + RTC_HSPR);
flag = rtc_read_reg(RTC_BASE + RTC_RTCGR) & RTC_RTCGR_NC1HZ_MASK;
if((tmpx != COLD_BOOT_SIG) || (flag != RTCGR_DIV_1HZ))
{
rt_kprintf("rtc is not configured\n");
rt_kprintf("please configure with set_date and set_time\n");
rtc_write_reg(RTC_BASE + RTC_RTCGR, RTCGR_DIV_1HZ);
rtc_write_reg(RTC_BASE + RTC_HSPR, COLD_BOOT_SIG);
rtc_write_reg(RTC_BASE + RTC_RTCSR, 0x00000000);
rtc_write_reg(RTC_BASE + RTC_RTCSR, 0);
rtc_set_reg(RTC_BASE + RTC_RTCCR, RTC_RTCCR_RTCE);
}
else
{
rt_kprintf("skip init rtc...\n");
}
}
void jz_rtc_deinit(void)
{
rtc_clr_reg(RTC_BASE + RTC_RTCCR, RTC_RTCCR_RTCE);
}
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;
RT_ASSERT(dev != RT_NULL);
switch (cmd)
{
case RT_DEVICE_CTRL_RTC_GET_TIME:
{
const struct tm* tm_now;
struct tm tm_new;
time_t timeNow;
time = (time_t *)args;
/* Get the current Time */
timeNow = rtc_read_reg(RTC_BASE + RTC_RTCSR);
tm_now = localtime(&timeNow);
/* 0-99 range : Years since 1900 */
rt_memcpy(&tm_new,tm_now,sizeof(struct tm));
tm_new.tm_year = tm_now->tm_year + 2000 - 1900;
*time = mktime(&tm_new);
}
break;
case RT_DEVICE_CTRL_RTC_SET_TIME:
{
const struct tm* tm_now;
struct tm tm_new;
time_t timeNow;
time = (time_t *)args;
tm_now = localtime(time);
rt_memcpy(&tm_new,tm_now,sizeof(struct tm));
/* 0-99 range : Years since 1900 */
tm_new.tm_year = tm_now->tm_year + 1900 - 2000;
timeNow = mktime(&tm_new);
/* upgrade the current Time */
rtc_write_reg(RTC_BASE + RTC_RTCSR,timeNow);
}
break;
}
return RT_EOK;
}
int rt_hw_rtc_init(void)
{
static struct rt_device rtc;
jz_rtc_init();
rtc.type = RT_Device_Class_RTC;
/* register rtc device */
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);
}
INIT_DEVICE_EXPORT(rt_hw_rtc_init);
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