78 lines
1.6 KiB
C
78 lines
1.6 KiB
C
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/*
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* Copyright (c) 2006-2018, Synwit Technology Co.,Ltd.
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2018-12-10 Zohar_Lee first version
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*/
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#include <board.h>
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#include "rtthread.h"
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#include "rtdevice.h"
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static rt_err_t swm320_wdt_init(rt_watchdog_t *wdt)
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{
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WDT_Init(WDT, SystemCoreClock / 2, WDT_MODE_INTERRUPT);
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return RT_EOK;
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}
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static rt_err_t swm320_wdt_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_GET_TIMEOUT:
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*(uint32_t *)arg = WDT->LOAD;
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break;
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case RT_DEVICE_CTRL_WDT_SET_TIMEOUT:
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WDT_Stop(WDT);
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WDT->LOAD = SystemCoreClock / 1000 * (*(uint32_t *)arg);
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break;
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case RT_DEVICE_CTRL_WDT_GET_TIMELEFT:
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*(uint32_t *)arg = WDT_GetValue(WDT);
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break;
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case RT_DEVICE_CTRL_WDT_KEEPALIVE:
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WDT_Feed(WDT);
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break;
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case RT_DEVICE_CTRL_WDT_START:
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WDT_Start(WDT);
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break;
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case RT_DEVICE_CTRL_WDT_STOP:
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WDT_Stop(WDT);
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break;
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default:
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break;
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}
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return RT_EOK;
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}
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rt_watchdog_t swm320_wdt;
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const static struct rt_watchdog_ops swm320_wdt_ops =
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{
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swm320_wdt_init,
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swm320_wdt_control
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};
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int rt_hw_wdt_init(void)
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{
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rt_err_t result = RT_EOK;
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swm320_wdt.ops = &swm320_wdt_ops;
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result = rt_hw_watchdog_register(&swm320_wdt,
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"iwg",
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RT_DEVICE_FLAG_RDWR,
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WDT);
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return result;
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}
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INIT_BOARD_EXPORT(rt_hw_wdt_init);
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void WDT_Handler(void)
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{
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WDT_INTClr(WDT);
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}
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