116 lines
2.4 KiB
C
116 lines
2.4 KiB
C
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/*
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* Copyright (c) 2006-2018, 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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* 2020-06-18 thread-liu the first version
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*/
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#include <board.h>
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#if defined(BSP_USING_WWDG)
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#include "drv_config.h"
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#include <string.h>
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#include <stdlib.h>
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//#define DRV_DEBUG
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#define LOG_TAG "drv.wwg"
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#include <drv_log.h>
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#define LED5_PIN GET_PIN(A, 14)
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static rt_uint8_t feed_flag = 0;
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static WWDG_HandleTypeDef hwwdg1;
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void WWDG1_IRQHandler(void)
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{
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/* enter interrupt */
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rt_interrupt_enter();
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HAL_WWDG_IRQHandler(&hwwdg1);
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/* leave interrupt */
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rt_interrupt_leave();
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}
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void HAL_WWDG_EarlyWakeupCallback(WWDG_HandleTypeDef* hwwdg)
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{
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if(hwwdg->Instance==WWDG1)
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{
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if (feed_flag)
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{
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HAL_WWDG_Refresh(&hwwdg1);
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HAL_GPIO_TogglePin(GPIOA, GPIO_PIN_14);
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}
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}
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}
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static void wwdg_init()
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{
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rt_pin_mode(LED5_PIN, PIN_MODE_OUTPUT);
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hwwdg1.Instance = WWDG1;
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hwwdg1.Init.Prescaler = WWDG_PRESCALER_8;
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hwwdg1.Init.Window = 0X5F;
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hwwdg1.Init.Counter = 0x7F;
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hwwdg1.Init.EWIMode = WWDG_EWI_ENABLE;
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if (HAL_WWDG_Init(&hwwdg1) != HAL_OK)
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{
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Error_Handler();
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}
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feed_flag = 1;
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}
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static void wwdg_control(uint8_t pre_value)
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{
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if(pre_value > 7)
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{
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pre_value = 7;
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}
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hwwdg1.Instance->CFR &= ~(7 << 11); /* clear WDGTB[2:0] */
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hwwdg1.Instance->CFR |= pre_value << 11; /* set WDGTB[2:0] */
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}
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static void wwdg_stop(void)
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{
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feed_flag = 0;
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}
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static int wwdg_sample(int argc, char *argv[])
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{
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if (argc > 1)
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{
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if (!strcmp(argv[1], "run"))
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{
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wwdg_init();
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}
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else if (!strcmp(argv[1], "set"))
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{
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if (argc > 2)
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{
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wwdg_control(atoi(argv[2]));
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}
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}
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else if (!strcmp(argv[1], "stop"))
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{
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wwdg_stop();
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}
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}
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else
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{
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rt_kprintf("Usage:\n");
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rt_kprintf("wwdg_sample run - open wwdg, when feed wwdg in wwdg irq, the LD5 will blink\n");
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rt_kprintf("wwdg_sample stop - stop to feed wwdg, system will reset\n");
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rt_kprintf("wwdg_sample set - set the wwdg prescaler, wwdg_sample set [0 - 7]\n");
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}
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return RT_EOK;
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}
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MSH_CMD_EXPORT(wwdg_sample, window watch dog sample);
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#endif
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