81 lines
1.8 KiB
C
81 lines
1.8 KiB
C
/*
|
|
* Copyright (c) 2006-2018, RT-Thread Development Team
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Change Logs:
|
|
* Date Author Notes
|
|
* 2018-12-07 balanceTWK first version
|
|
*/
|
|
|
|
#include <board.h>
|
|
|
|
#ifdef RT_USING_WDT
|
|
|
|
//#define DRV_DEBUG
|
|
#define LOG_TAG "drv.wdt"
|
|
#include <drv_log.h>
|
|
|
|
static IWDG_HandleTypeDef hiwdg;
|
|
static struct rt_watchdog_ops ops;
|
|
static rt_watchdog_t watchdog;
|
|
|
|
static rt_err_t wdt_init(rt_watchdog_t *wdt)
|
|
{
|
|
hiwdg.Instance = IWDG;
|
|
hiwdg.Init.Prescaler = IWDG_PRESCALER_32;
|
|
|
|
hiwdg.Init.Reload = 0x00000FFE;
|
|
#if defined(SOC_SERIES_STM32F0) || defined(SOC_SERIES_STM32L4) || defined(SOC_SERIES_STM32F7)
|
|
hiwdg.Init.Window = 0x00000FFF;
|
|
#endif
|
|
|
|
if (HAL_IWDG_Init(&hiwdg) != HAL_OK)
|
|
{
|
|
LOG_E("wdt init failed.");
|
|
return -RT_ERROR;
|
|
}
|
|
return RT_EOK;
|
|
}
|
|
|
|
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:
|
|
HAL_IWDG_Refresh(&hiwdg);
|
|
break;
|
|
/* set watchdog timeout */
|
|
case RT_DEVICE_CTRL_WDT_SET_TIMEOUT:
|
|
hiwdg.Init.Reload = *((rt_uint32_t*)arg);
|
|
if (HAL_IWDG_Init(&hiwdg) != HAL_OK)
|
|
{
|
|
LOG_E("wdg set timeout failed.");
|
|
return -RT_ERROR;
|
|
}
|
|
break;
|
|
default:
|
|
return -RT_ERROR;
|
|
}
|
|
return RT_EOK;
|
|
}
|
|
|
|
int rt_wdt_init(void)
|
|
{
|
|
ops.init = &wdt_init;
|
|
ops.control = &wdt_control;
|
|
watchdog.ops = &ops;
|
|
/* register watchdog device */
|
|
if (rt_hw_watchdog_register(&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 /* RT_USING_WDT */
|