art-pi 在rt-therad studio下实现看门狗

1 需要在stm32h7xx_hal_conf.h的65行添加定义

添加剂代码

#include "stm32h7xx_hal_iwdg.h"
IWDG_HandleTypeDef IWDG_Handler;

void IWDG_Init(uint8_t prer, uint16_t rlr)
{
    IWDG_Handler.Instance = IWDG1;
    IWDG_Handler.Init.Prescaler = prer;                 //设置IWDG分频系数
    IWDG_Handler.Init.Reload = rlr;                     //重装载值
    IWDG_Handler.Init.Window = IWDG_WINDOW_DISABLE;
    HAL_IWDG_Init(&IWDG_Handler);                       //初始化IWDG并开启独立看门狗
}

void IWDG_Feed(void)
{
    HAL_IWDG_Refresh(&IWDG_Handler);    //喂狗
}

在main函数里添加IWDG_Init()，主循环添加IWDG_Feed()。
参考下面示例代码

/*
 * Copyright (c) 2006-2020, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2020-09-02     RT-Thread    first version
 */

#include <rtthread.h>
#include <rtdevice.h>
#include "drv_common.h"

#define DBG_TAG "main"
#define DBG_LVL DBG_INFO
#include <rtdbg.h>
#define LED_PIN GET_PIN(I, 8)

#include "stm32h7xx_hal_iwdg.h"
IWDG_HandleTypeDef IWDG_Handler;

void IWDG_Init(uint8_t prer, uint16_t rlr)
{
    IWDG_Handler.Instance = IWDG1;
    IWDG_Handler.Init.Prescaler = prer;                 //设置IWDG分频系数
    IWDG_Handler.Init.Reload = rlr;                     //重装载值
    IWDG_Handler.Init.Window = IWDG_WINDOW_DISABLE;
    HAL_IWDG_Init(&IWDG_Handler);                       //初始化IWDG并开启独立看门狗
}

void IWDG_Feed(void)
{
    HAL_IWDG_Refresh(&IWDG_Handler);    //喂狗
}
int main(void)
{
    rt_uint32_t count = 1;

    rt_pin_mode(LED_PIN, PIN_MODE_OUTPUT);
    IWDG_Init(100,2000);//大概是3秒
    while(count++)
    {
        rt_thread_mdelay(500);
        rt_pin_write(LED_PIN, PIN_HIGH);
        rt_thread_mdelay(500);
        rt_pin_write(LED_PIN, PIN_LOW);
        LOG_I("IWDG_Feed");
        IWDG_Feed();
    }
    return RT_EOK;
}

#include "stm32h7xx.h"
static int vtor_config(void)
{
    /* Vector Table Relocation in Internal QSPI_FLASH */
    SCB->VTOR = QSPI_BASE;
    return 0;
}
INIT_BOARD_EXPORT(vtor_config);