看门狗一直复位，很无奈，初始化完成就启动？(已解决)

发布于 2019-12-03 16:36:18 浏览：3662 订阅该版

* 本帖最后由 liuzhuomju 于 2019-12-3 17:16 编辑 *

#include "bsp_wdog.h"
#define WDT_DEVICE_NAME    "wdt"    /* 看门狗设备名称 */

static rt_device_t wdg_dev;         /* 看门狗设备句柄 */

static void idle_hook(void)
{
 /* 在空闲线程的回调函数里喂狗 */
 rt_device_control(wdg_dev, RT_DEVICE_CTRL_WDT_KEEPALIVE, NULL);
 //rt_kprintf("feed the dog! ");
}

rt_err_t WDog_Init(void)
{
 rt_err_t ret = RT_EOK;
 rt_uint32_t timeout = 30; /* 溢出时间，单位：秒 */
 
 /* 根据设备名称查找看门狗设备，获取设备句柄 */
 wdg_dev = rt_device_find(WDT_DEVICE_NAME);
 if (!wdg_dev)
 {
 rt_kprintf("find %s failed! ", WDT_DEVICE_NAME);
 return RT_ERROR;
 }
 /* 初始化设备 */
 ret = rt_device_init(wdg_dev);
 if (ret != RT_EOK)
 {
 rt_kprintf("initialize %s failed! ", WDT_DEVICE_NAME);
 return RT_ERROR;
 }
 /* 设置看门狗溢出时间 */
 ret = rt_device_control(wdg_dev, RT_DEVICE_CTRL_WDT_SET_TIMEOUT, &timeout);
 if (ret != RT_EOK)
 {
 rt_kprintf("set %s timeout failed! ", WDT_DEVICE_NAME);
 return RT_ERROR;
 }
 /* 启动看门狗 */
 ret = rt_device_control(wdg_dev, RT_DEVICE_CTRL_WDT_START, RT_NULL);
 if (ret != RT_EOK)
 {
 rt_kprintf("start %s failed! ", WDT_DEVICE_NAME);
 return -RT_ERROR;
 }
 /* 设置空闲线程回调函数 */
 rt_thread_idle_sethook(idle_hook);
}