记得上次Maibu显示的时候，我无法吧数据单独显示出来，最后只能把数据全放到一起，通过api提供出来，像这样{"data":"32 在 60"} 很无奈。不过经过Maibu控制的相关操作之后，就大概了解的怎么搞，所以这次增补就是数据分离开来，这样对于手表表盘的布局也有一定的好处。代码地址：https://github.com/ZZES-ZVD/watch_pet 2017.5.21

第三次增补

1.Nodejs接口

api提供新的json格式数据{ "tem":28,"hum":55,"indoor":"不在" }，方便Maibu的数据过滤显示。其余代码就不显示了，具体可以看完整代码。

//new 手表推送
app.get('/newwatch',function(req,res){
    var data = [];
    conn.query('SELECT * FROM pet',function(err,rows,fields){
        var indoor = "";
        //将数字1和0，转换成“在”和“不在”
        if ( rows[rows.length-1].indoor== 1) {
            indoor = "在"
        }else{
            indoor = "不在"
        }
        //封装数据
        data = "{ "tem":"+  rows[rows.length-1].tem  +","hum":"+  rows[rows.length-1].hum  +","indoor":"+ """+   indoor +"" }"
        res.send(data);
    })
})

2.手表代码

（1）定义数据内容图层

//温度数据内容
static int32_t g_layer_id_temdata = -1;
//湿度数据内容
static int32_t g_layer_id_humdata = -1;
//屋内判断数据内容
static int32_t g_layer_id_indoordata = -1;

（2）数据请求函数

void data_request_web()
{
    /*拼接url请求地址, 注意url的缓存大小*/
    char url[200] = "";
    /*将请求网址加入到url数组*/
    sprintf(url, "%s", DATA_WEB);       
    char param[50] = "";
    /*将数据过滤后加入到param数组*/
    sprintf(param,"%s,%s,%s","tem","hum","indoor");
    /*发送一次*/
    g_comm_id_web = maibu_comm_request_web(url, param, 0);//过滤
}

（3）图层初始化函数

P_Window init_btc_window()
{

    static P_Window p_window;
    P_Layer layer_background = NULL;   
    p_window = app_window_create();
    if (NULL == p_window)
    {
        return NULL;
    }
    /* begin*/    
    /*创建背景图层*/
    layer_background = get_layer();

    /*添加背景图层到窗口*/
    app_window_add_layer(p_window, layer_background);

    /* 添加时间栏 */
    add_time_bar(p_window);
 
    /*添加数据提示信息*/
    GRect frame_zzes = {{0,34}, {16, 128}};
    add_text_layer(p_window, &g_layer_id_zzes, "治电科技", &frame_zzes, GAlignBottom, U_ASCII_ARIAL_16, GColorWhite);
        
    /*添加温度数据*/
    GRect frame_temdata = {{25, 62}, {16, 50}};
    add_text_layer(p_window, &g_layer_id_temdata, "waiting", &frame_temdata, GAlignCenter, U_ASCII_ARIAL_14, GColorWhite);
    
    /*添加湿度数据*/
    GRect frame_humdata = {{25, 83}, {16, 50}};
    add_text_layer(p_window, &g_layer_id_humdata, "waiting", &frame_humdata, GAlignCenter, U_ASCII_ARIAL_14, GColorWhite);
    
    /*添加窝内数据*/
    GRect frame_indoordata = {{25, 103}, {16, 50}};
    add_text_layer(p_window, &g_layer_id_indoordata, "waiting", &frame_indoordata, GAlignCenter, U_ASCII_ARIAL_14, GColorWhite);

    return p_window;
}

（4）请求回调，用于更新数据到图层(这就是这次我的重点。。。)

static void web_recv_callback(const uint8_t *buff, uint16_t size)
{
    char stock_gid[10];
    char stock_gid2[10];
    char stock_gid3[10];

    char i;

    maibu_get_json_str(buff,"indoor", stock_gid, 10);//过滤
    maibu_get_json_str(buff,"tem", stock_gid2, 10);
    maibu_get_json_str(buff,"hum", stock_gid3, 10);
    for (i=0;i<10;i++)
    {
    if (stock_gid[i]=='}')
        {
            stock_gid[i]=0;
        }
    }
    for (i=0;i<10;i++)
    {
    if (stock_gid2[i]=='}')
        {
            stock_gid2[i]=0;
        }
    }
    for (i=0;i<10;i++)
    {
    if (stock_gid3[i]=='}')
        {
            stock_gid3[i]=0;
        }
    }
    /*添加数据*/
    GRect frame_indoordata = {{25, 103}, {16, 50}};
    add_text_layer(h_window, &g_layer_id_indoordata, stock_gid, &frame_indoordata, GAlignCenter, U_ASCII_ARIAL_14, GColorWhite);
    GRect frame_temdata = {{25, 62}, {16, 50}};
    add_text_layer(h_window, &g_layer_id_temdata, stock_gid2,&frame_temdata, GAlignCenter,U_ASCII_ARIAL_14,GColorWhite);
    GRect frame_humdata = {{25, 83}, {16, 50}};
    add_text_layer(h_window, &g_layer_id_humdata, stock_gid3,&frame_humdata, GAlignCenter,U_ASCII_ARIAL_14,GColorWhite);
    app_window_update(h_window);
}

3.显示结果

（1）模拟器显示

模拟器

（2）Maibu实体显示

Maibu实体

@治电小白菜20170521

搭建简易的物联网服务端和客户端-第三次增补（二十二）

第三次增补

1.Nodejs接口

2.手表代码

3.显示结果