108 lines
2.6 KiB
C
108 lines
2.6 KiB
C
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/*
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* Copyright (c) 2006-2022, RT-Thread Development Team
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* Copyright (c) 2022, xiaoxiaolisunny
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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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* 2022-07-11 xiaoxiaolisunny first version
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*/
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#include <drv_config.h>
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#include <board_config.h>
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#include "drv_irq.h"
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#ifdef RT_USING_WDT
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#define LOG_TAG "drv.dwt"
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#include <drv_log.h>
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struct hc32_wdt_obj
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{
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rt_watchdog_t watchdog;
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stc_wdt_init_t hiwdg;
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rt_uint16_t is_start;
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};
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static struct hc32_wdt_obj hc32_wdt;
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static struct rt_watchdog_ops ops;
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static rt_err_t wdt_init(rt_watchdog_t *wdt)
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{
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return RT_EOK;
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}
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/* timeout(s) = PERI * CKS / PCLK3
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16384 * 8192 / 50M = 2.68s
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*/
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static rt_err_t 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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/* feed the watchdog */
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case RT_DEVICE_CTRL_WDT_KEEPALIVE:
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WDT_FeedDog();
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break;
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/* set watchdog timeout */
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case RT_DEVICE_CTRL_WDT_SET_TIMEOUT:
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hc32_wdt.hiwdg.u32CountPeriod = WDT_CNT_PERIOD16384;
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if(hc32_wdt.hiwdg.u32RefreshRange > 0xFFFF)
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{
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LOG_E("wdg set timeout parameter too large, please less than %ds", 0xFFFF);
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return -RT_EINVAL;
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}
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if(hc32_wdt.is_start)
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{
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if (WDT_Init(&hc32_wdt.hiwdg) != LL_OK)
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{
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LOG_E("wdg set timeout failed.");
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return -RT_ERROR;
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}
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}
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break;
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case RT_DEVICE_CTRL_WDT_GET_TIMEOUT:
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(*((rt_uint32_t*)arg)) = 16384 * 8192 / 50000000;
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break;
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case RT_DEVICE_CTRL_WDT_START:
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if (WDT_Init(&hc32_wdt.hiwdg) != LL_OK)
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{
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LOG_E("wdt start failed.");
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return -RT_ERROR;
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}
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hc32_wdt.is_start = 1;
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break;
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default:
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LOG_W("This command is not supported.");
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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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int rt_wdt_init(void)
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{
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hc32_wdt.hiwdg.u32ClockDiv = WDT_CLK_DIV8192;
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hc32_wdt.hiwdg.u32CountPeriod = WDT_CNT_PERIOD16384;
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hc32_wdt.hiwdg.u32RefreshRange = WDT_RANGE_0TO100PCT;
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hc32_wdt.hiwdg.u32LPMCount = WDT_LPM_CNT_STOP;
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hc32_wdt.hiwdg.u32ExceptionType = WDT_EXP_TYPE_RST;
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hc32_wdt.is_start = 0;
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ops.init = &wdt_init;
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ops.control = &wdt_control;
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hc32_wdt.watchdog.ops = &ops;
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/* register watchdog device */
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if (rt_hw_watchdog_register(&hc32_wdt.watchdog, "wdt", RT_DEVICE_FLAG_DEACTIVATE, RT_NULL) != RT_EOK)
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{
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LOG_E("wdt device register failed.");
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return -RT_ERROR;
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}
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LOG_D("wdt device register success.");
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return RT_EOK;
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}
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INIT_BOARD_EXPORT(rt_wdt_init);
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#endif
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