77 lines
1.5 KiB
C
77 lines
1.5 KiB
C
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/*
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* File : drv_iwg.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2015, RT-Thread Development Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rt-thread.org/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2017-11-08 ZYH the first version
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*/
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#include <rtthread.h>
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#include "board.h"
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#include <rtdevice.h>
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#include <rthw.h>
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#ifdef RT_USING_WDT
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IWDG_HandleTypeDef hiwdg;
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static rt_err_t drv_init(rt_watchdog_t *wdt)
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{
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hiwdg.Instance = IWDG;
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hiwdg.Init.Prescaler = IWDG_PRESCALER_16;//1s
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hiwdg.Init.Reload = 4095;
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if (HAL_IWDG_Init(&hiwdg) != HAL_OK)
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{
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while (1)
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{
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}
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}
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return RT_EOK;
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}
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static rt_err_t drv_control(rt_watchdog_t *wdt, int cmd, void *arg)
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{
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switch (cmd)
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{
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case RT_DEVICE_CTRL_WDT_SET_TIMEOUT:
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hiwdg.Init.Reload = (rt_uint32_t)arg;
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if (HAL_IWDG_Init(&hiwdg) != HAL_OK)
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{
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return RT_ERROR;
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}
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break;
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case RT_DEVICE_CTRL_WDT_KEEPALIVE:
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HAL_IWDG_Refresh(&hiwdg);
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break;
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default:
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return RT_ERROR;
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}
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return RT_EOK;
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}
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static struct rt_watchdog_ops _ops =
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{
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drv_init,
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drv_control
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};
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static rt_watchdog_t _iwg =
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{
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.ops = &_ops
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};
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int rt_iwg_init(void)
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{
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return rt_hw_watchdog_register(&_iwg, "iwg", RT_DEVICE_FLAG_DEACTIVATE, RT_NULL);
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}
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INIT_BOARD_EXPORT(rt_iwg_init);
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#endif
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