150 lines
4.4 KiB
C
150 lines
4.4 KiB
C
/*
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* Copyright (c) 2006-2024, RT-Thread Development Team
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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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* 2024-05-24 QT-one first version
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*/
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#include <rtdbg.h>
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#include "drv_wdt.h"
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#ifdef BSP_USING_WDT
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struct ht32_wdt
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{
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struct rt_watchdog_device ht32_wdt_device;
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rt_uint8_t ht32_wdt_start_flag;
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};
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static struct ht32_wdt ht32_wdt_obj;
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/* Initialization functions for wdt */
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static rt_err_t ht32_wdt_init(rt_watchdog_t *wdt)
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{
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return -RT_ERROR;
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}
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/* Control function for wdt */
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static rt_err_t ht32_wdt_control(rt_watchdog_t *wdt, int cmd, void *arg)
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{
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rt_uint16_t wdt_time_val = (*((rt_uint16_t*)arg));
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switch(cmd)
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{
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/* get timeout(in seconds) */
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case RT_DEVICE_CTRL_WDT_GET_TIMEOUT:
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(*((rt_uint16_t*)arg)) = (WDT_GetReloadValue())/250;
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break;
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/* set timeout(in seconds) */
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case RT_DEVICE_CTRL_WDT_SET_TIMEOUT:
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if(ht32_wdt_obj.ht32_wdt_start_flag)
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{
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LOG_W("Please stop the WDT device first.");
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}
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else
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{
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if(wdt_time_val > 16)
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{
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LOG_W("Parameter out of settable range.");
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}
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else
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{
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/* Disable WDT Protection */
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WDT_ProtectCmd(DISABLE);
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/* Reset WDT */
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WDT_DeInit();
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/* Set Prescaler Value, 32K/128 = 250Hz 4ms */
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WDT_SetPrescaler(WDT_PRESCALER_128);
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/* Set Prescaler Value, 250Hz*wdt_time_val*250 = nms */
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WDT_SetReloadValue((wdt_time_val*250));
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/* Set Delta Value, 250Hz*wdt_time_val*250 = nms */
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WDT_SetDeltaValue((wdt_time_val*250));
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/* Enable the WDT Reset when WDT meets underflow or error */
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WDT_ResetCmd(ENABLE);
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/* Reload Counter as WDTV Value */
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WDT_Restart();
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}
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}
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break;
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/* get the left time before reboot(in seconds) */
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case RT_DEVICE_CTRL_WDT_GET_TIMELEFT:
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return -RT_ERROR;
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/* refresh watchdog */
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case RT_DEVICE_CTRL_WDT_KEEPALIVE:
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if(ht32_wdt_obj.ht32_wdt_start_flag)
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{
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/* Enable WDT Restart (Reload WDT Counter) */
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WDT_Restart();
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}
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else
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{
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LOG_W("WDT device not activated.");
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}
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break;
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/* start watchdog */
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case RT_DEVICE_CTRL_WDT_START:
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if(ht32_wdt_obj.ht32_wdt_start_flag)
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{
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LOG_W("The WDT device has been activated.");
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}
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else
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{
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/* Enable WDT */
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WDT_Cmd(ENABLE);
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/* Enable WDT Protection */
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WDT_ProtectCmd(ENABLE);
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ht32_wdt_obj.ht32_wdt_start_flag = 1;
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}
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break;
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/* stop watchdog */
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case RT_DEVICE_CTRL_WDT_STOP:
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if(ht32_wdt_obj.ht32_wdt_start_flag)
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{
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/* Disable WDT Protection */
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WDT_ProtectCmd(DISABLE);
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/* Disable WDT */
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WDT_Cmd(DISABLE);
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ht32_wdt_obj.ht32_wdt_start_flag = 0;
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}
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else
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{
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LOG_W("WDT is not activated and does not need to be shut down.");
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}
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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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static struct rt_watchdog_ops ht32_wdt_ops =
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{
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.init = ht32_wdt_init,
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.control = ht32_wdt_control,
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};
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static int rt_hw_wdt_init(void)
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{
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CKCU_PeripClockConfig_TypeDef CKCUClock = {{0}};
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CKCUClock.Bit.WDT = 1;
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CKCU_PeripClockConfig(CKCUClock, ENABLE);
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/* wdt operator function */
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ht32_wdt_obj.ht32_wdt_device.ops = &ht32_wdt_ops;
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/* wdt activation flag bit */
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ht32_wdt_obj.ht32_wdt_start_flag = 0;
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/* register watchdog device */
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if (rt_hw_watchdog_register(&ht32_wdt_obj.ht32_wdt_device, BSP_USING_WDT_NAME, RT_DEVICE_FLAG_DEACTIVATE, &ht32_wdt_obj) != 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_hw_wdt_init);
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#endif
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