rt-thread-official/bsp/stm32/libraries/HAL_Drivers/drivers/drv_wdt.c

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/*
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* Copyright (c) 2006-2023, 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>
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struct stm32_wdt_obj
{
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rt_watchdog_t watchdog;
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IWDG_HandleTypeDef hiwdg;
rt_uint16_t is_start;
};
static struct stm32_wdt_obj stm32_wdt;
static struct rt_watchdog_ops ops;
static rt_err_t wdt_init(rt_watchdog_t *wdt)
{
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:
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if(HAL_IWDG_Refresh(&stm32_wdt.hiwdg) != HAL_OK)
{
LOG_E("watch dog keepalive fail.");
}
break;
/* set watchdog timeout */
case RT_DEVICE_CTRL_WDT_SET_TIMEOUT:
#if defined(LSI_VALUE)
if(LSI_VALUE)
{
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stm32_wdt.hiwdg.Init.Reload = (*((rt_uint32_t*)arg)) * LSI_VALUE / 256 ;
}
else
{
LOG_E("Please define the value of LSI_VALUE!");
}
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if(stm32_wdt.hiwdg.Init.Reload > 0xFFF)
{
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LOG_E("wdg set timeout parameter too large, please less than %ds",0xFFF * 256 / LSI_VALUE);
return -RT_EINVAL;
}
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#else
#error "Please define the value of LSI_VALUE!"
#endif
if(stm32_wdt.is_start)
{
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if (HAL_IWDG_Init(&stm32_wdt.hiwdg) != HAL_OK)
{
LOG_E("wdg set timeout failed.");
return -RT_ERROR;
}
}
break;
case RT_DEVICE_CTRL_WDT_GET_TIMEOUT:
#if defined(LSI_VALUE)
if(LSI_VALUE)
{
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(*((rt_uint32_t*)arg)) = stm32_wdt.hiwdg.Init.Reload * 256 / LSI_VALUE;
}
else
{
LOG_E("Please define the value of LSI_VALUE!");
}
#else
#error "Please define the value of LSI_VALUE!"
#endif
break;
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case RT_DEVICE_CTRL_WDT_START:
if (HAL_IWDG_Init(&stm32_wdt.hiwdg) != HAL_OK)
{
LOG_E("wdt start failed.");
return -RT_ERROR;
}
stm32_wdt.is_start = 1;
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break;
default:
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LOG_W("This command is not supported.");
return -RT_ERROR;
}
return RT_EOK;
}
int rt_wdt_init(void)
{
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#if defined(SOC_SERIES_STM32H7)
stm32_wdt.hiwdg.Instance = IWDG1;
#else
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stm32_wdt.hiwdg.Instance = IWDG;
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#endif
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stm32_wdt.hiwdg.Init.Prescaler = IWDG_PRESCALER_256;
stm32_wdt.hiwdg.Init.Reload = 0x00000FFF;
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#if defined(SOC_SERIES_STM32F0) || defined(SOC_SERIES_STM32G4)|| defined(SOC_SERIES_STM32L4) || defined(SOC_SERIES_STM32F7) \
|| defined(SOC_SERIES_STM32H7) || defined(SOC_SERIES_STM32L0) || defined(SOC_SERIES_STM32G0)
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stm32_wdt.hiwdg.Init.Window = 0x00000FFF;
#endif
stm32_wdt.is_start = 0;
ops.init = &wdt_init;
ops.control = &wdt_control;
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stm32_wdt.watchdog.ops = &ops;
/* register watchdog device */
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if (rt_hw_watchdog_register(&stm32_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 /* RT_USING_WDT */