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