108 lines
2.6 KiB
C
108 lines
2.6 KiB
C
/*
|
|
* Copyright (c) 2006-2022, RT-Thread Development Team
|
|
* Copyright (c) 2022, xiaoxiaolisunny
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Change Logs:
|
|
* Date Author Notes
|
|
* 2022-07-11 xiaoxiaolisunny first version
|
|
*/
|
|
|
|
#include <drv_config.h>
|
|
#include <board_config.h>
|
|
#include "drv_irq.h"
|
|
|
|
#ifdef RT_USING_WDT
|
|
|
|
#define LOG_TAG "drv.dwt"
|
|
#include <drv_log.h>
|
|
|
|
struct hc32_wdt_obj
|
|
{
|
|
rt_watchdog_t watchdog;
|
|
stc_wdt_init_t hiwdg;
|
|
rt_uint16_t is_start;
|
|
};
|
|
|
|
static struct hc32_wdt_obj hc32_wdt;
|
|
static struct rt_watchdog_ops ops;
|
|
|
|
static rt_err_t wdt_init(rt_watchdog_t *wdt)
|
|
{
|
|
return RT_EOK;
|
|
}
|
|
|
|
/* timeout(s) = PERI * CKS / PCLK3
|
|
16384 * 8192 / 50M = 2.68s
|
|
*/
|
|
static rt_err_t wdt_control(rt_watchdog_t *wdt, int cmd, void *arg)
|
|
{
|
|
switch (cmd)
|
|
{
|
|
/* feed the watchdog */
|
|
case RT_DEVICE_CTRL_WDT_KEEPALIVE:
|
|
WDT_FeedDog();
|
|
break;
|
|
/* set watchdog timeout */
|
|
case RT_DEVICE_CTRL_WDT_SET_TIMEOUT:
|
|
hc32_wdt.hiwdg.u32CountPeriod = WDT_CNT_PERIOD16384;
|
|
if(hc32_wdt.hiwdg.u32RefreshRange > 0xFFFF)
|
|
{
|
|
LOG_E("wdg set timeout parameter too large, please less than %ds", 0xFFFF);
|
|
return -RT_EINVAL;
|
|
}
|
|
if(hc32_wdt.is_start)
|
|
{
|
|
if (WDT_Init(&hc32_wdt.hiwdg) != LL_OK)
|
|
{
|
|
LOG_E("wdg set timeout failed.");
|
|
return -RT_ERROR;
|
|
}
|
|
}
|
|
break;
|
|
case RT_DEVICE_CTRL_WDT_GET_TIMEOUT:
|
|
(*((rt_uint32_t*)arg)) = 16384 * 8192 / 50000000;
|
|
break;
|
|
case RT_DEVICE_CTRL_WDT_START:
|
|
if (WDT_Init(&hc32_wdt.hiwdg) != LL_OK)
|
|
{
|
|
LOG_E("wdt start failed.");
|
|
return -RT_ERROR;
|
|
}
|
|
hc32_wdt.is_start = 1;
|
|
break;
|
|
default:
|
|
LOG_W("This command is not supported.");
|
|
return -RT_ERROR;
|
|
}
|
|
return RT_EOK;
|
|
}
|
|
|
|
int rt_wdt_init(void)
|
|
{
|
|
hc32_wdt.hiwdg.u32ClockDiv = WDT_CLK_DIV8192;
|
|
hc32_wdt.hiwdg.u32CountPeriod = WDT_CNT_PERIOD16384;
|
|
hc32_wdt.hiwdg.u32RefreshRange = WDT_RANGE_0TO100PCT;
|
|
hc32_wdt.hiwdg.u32LPMCount = WDT_LPM_CNT_STOP;
|
|
hc32_wdt.hiwdg.u32ExceptionType = WDT_EXP_TYPE_RST;
|
|
hc32_wdt.is_start = 0;
|
|
|
|
ops.init = &wdt_init;
|
|
ops.control = &wdt_control;
|
|
hc32_wdt.watchdog.ops = &ops;
|
|
|
|
/* register watchdog device */
|
|
if (rt_hw_watchdog_register(&hc32_wdt.watchdog, "wdt", RT_DEVICE_FLAG_DEACTIVATE, RT_NULL) != RT_EOK)
|
|
{
|
|
LOG_E("wdt device register failed.");
|
|
return -RT_ERROR;
|
|
}
|
|
LOG_D("wdt device register success.");
|
|
return RT_EOK;
|
|
}
|
|
INIT_BOARD_EXPORT(rt_wdt_init);
|
|
|
|
#endif
|
|
|