在使用iic传感器,在寻找设备时卡死在for 循环里

发布于 2021-03-08 00:28:44
rt_device_t rt_device_find(const char *name)
{
    struct rt_object *object;
    struct rt_list_node *node;
    struct rt_object_information *information;

    /* enter critical */
    if (rt_thread_self() != RT_NULL)
        rt_enter_critical();

    /* try to find device object */
    information = rt_object_get_information(RT_Object_Class_Device);
    RT_ASSERT(information != RT_NULL);
    
         node != &(information->object_list);
         node  = node->next)
    {
        object = rt_list_entry(node, struct rt_object, list);
        if (rt_strncmp(object->name, name, RT_NAME_MAX) == 0)
        {
            /* leave critical */
            if (rt_thread_self() != RT_NULL)
                rt_exit_critical();

            return (rt_device_t)object;
        }
    }

    /* leave critical */
    if (rt_thread_self() != RT_NULL)
        rt_exit_critical();

    /* not found */
    return RT_NULL;
}
RTM_EXPORT(rt_device_find);

卡死在上述for循环里。

查看更多

关注者
0
被浏览
141
JQRR_7669
JQRR_7669 认证专家 2021-03-08

多半是有设备重复注册了

2 个回答
等风来
等风来 2021-03-08
rt_device_t rt_device_find(const char *name)
{
    struct rt_object *object;
    struct rt_list_node *node;
    struct rt_object_information *information;

    /* enter critical */
    if (rt_thread_self() != RT_NULL)
        rt_enter_critical();

    /* try to find device object */
    information = rt_object_get_information(RT_Object_Class_Device);
    RT_ASSERT(information != RT_NULL);
    for (node  = information->object_list.next;
         node != &(information->object_list);
         node  = node->next)
    {
        object = rt_list_entry(node, struct rt_object, list);
        if (rt_strncmp(object->name, name, RT_NAME_MAX) == 0)
        {
            /* leave critical */
            if (rt_thread_self() != RT_NULL)
                rt_exit_critical();

            return (rt_device_t)object;
        }
    }

    /* leave critical */
    if (rt_thread_self() != RT_NULL)
        rt_exit_critical();

    /* not found */
    return RT_NULL;
}
RTM_EXPORT(rt_device_find);

撰写答案

请登录后再发布答案,点击登录

发布
问题

分享
好友

手机
浏览

扫码手机浏览