基于ARM的智能灯光控制系统（5）设备链表

设备自动动态更新

使用链表实现，方便数据实时动态增加与删除。

链表处理头文件 （link_pro.h）

#ifndef __SL2000_LINK_H_#define __SL2000_LINK_H_struct sys_dev *Create(struct sys_dev main_dev);struct sys_dev *Delete(struct sys_dev * head,int type);struct sys_dev *Insert(struct sys_dev * head,struct sys_dev new_dev);void dev_print(struct sys_dev *head);struct sys_dev * stu_to_link(struct sys_dev *head);void link_to_stu(struct sys_dev *head);int find_id(char id,struct sys_dev *head,struct sys_dev *dev);struct sys_dev *  get_dev_id(char id,struct sys_dev *head);#endif

##链表处理实现文件（link_pro.c）

#include "config.h"#include "link_pro.h"extern struct sys_all g_dev[1]; //系统配置结构体全局变量struct sys_dev *Create(struct sys_dev main_dev){    struct sys_dev *pNew=NULL;    pNew=(struct sys_dev *)malloc(sizeof(struct sys_dev));    if(NULL == pNew)         printf("create malloc err...\n");    pNew->connect_sta = main_dev.connect_sta;//主控设备设置连接    strcpy(pNew->name,main_dev.name);    pNew->join_sta = main_dev.join_sta;    pNew->node.id = main_dev.node.id;    pNew->node.type = main_dev.node.type;    pNew->sw_sta = main_dev.sw_sta;    pNew->bind_dev = main_dev.bind_dev;    pNew->next = NULL;    printf("plink create ok...\n");    return pNew;}struct sys_dev *Insert(struct sys_dev * head,struct sys_dev new_dev){    struct sys_dev *pNew = NULL;    struct sys_dev *pFind = NULL;    pNew=(struct sys_dev *)malloc(sizeof(struct sys_dev));    if(NULL == pNew)         printf("create malloc err...\n");    pNew->connect_sta = new_dev.connect_sta;//主控设备设置连接    strcpy(pNew->name,new_dev.name);    pNew->join_sta = new_dev.join_sta;    pNew->node.id = new_dev.node.id;    pNew->node.type = new_dev.node.type;    pNew->sw_sta = new_dev.sw_sta;    pNew->bind_dev = new_dev.bind_dev;    pNew->next = NULL;    //新的节点，放在链表最后    if(NULL==head)        return pNew;    else{        pFind=head;        while(pFind->next!=NULL)        {            pFind=pFind->next;        }        pFind->next = pNew;    }    printf("plink insert ok...\n");    return head;}struct sys_dev *Delete(struct sys_dev * head,int type){    struct sys_dev *pFind=NULL;    struct sys_dev *pPrev=NULL;    pFind=head;    if(NULL==head){        printf("设备列表为空!\n");        return head;    }    while(pFind->node.type!=type && pFind->next!=NULL)    {        pPrev=pFind;        pFind=pFind->next;    }    if(pFind->node.type==type)    {        if(head==pFind){            head=pFind->next;        }else{            pPrev->next=pFind->next;        }        free(pFind);        printf("%d 设备节点已删除.\n",type);    }else{        printf("设备列表中没有要删除的设备.\n");    }    return head;}void dev_print(struct sys_dev *head){    struct sys_dev * p;    p=head;    if(NULL==head){        printf("列表为空!\n");    }else{        printf("%d 个设备已连接。\n",g_dev->count_dev);        while(p!=NULL){            printf("类型:%d 名称:%s\n",p->node.type,p->name);            p=p->next;        }    }}struct sys_dev * stu_to_link(struct sys_dev *head){    int i;    //通过配置文件，生成动态设备列表    for(i=0;i
    
     count_dev;i++){        if(i==0)            head = Create(g_dev->sys_dev[i]);        else            head = Insert(head,g_dev->sys_dev[i]);    }       return head;    }void link_to_stu(struct sys_dev *head){    struct sys_dev * p;    int i=0;    int max = g_dev->count_dev;    p=head;    if(NULL==head){        printf("列表为空!\n");    }else{        while(p!=NULL){            g_dev->sys_dev[i].connect_sta = p->connect_sta;            strcpy(g_dev->sys_dev[i].name,p->name);            g_dev->sys_dev[i].join_sta = p->join_sta;            g_dev->sys_dev[i].node.id = p->node.id;            g_dev->sys_dev[i].node.type = p->node.type;            g_dev->sys_dev[i].sw_sta = p->sw_sta;            g_dev->sys_dev[i].bind_dev = p->bind_dev;                   p=p->next;            if(i<=max)                i++;        }    }   }int find_id(char id,struct sys_dev *head,struct sys_dev *dev)//{    struct sys_dev * p;    p=head;    if(NULL==p){        printf("列表为空!\n");         return 0;    }else{        while(p!=NULL){            if(p->node.type==id){                if(dev!=NULL)                    memcpy(dev,p,sizeof(struct sys_dev));                return 1;                }           p=p->next;        }    }    return 0;   }struct sys_dev *  get_dev_id(char id,struct sys_dev *head)//{    struct sys_dev * p = NULL;    p=head;    if(NULL==p){        printf("列表为空!\n");         return NULL;    }else{        while(p!=NULL){            if(p->node.type==id){                return p;                }           p=p->next;        }    }    return NULL;    }