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•	  tuyaos_demo_xx_DIFF_[version].bin 用于差分ota的升级文件
•	  tuyaos_demo_xx_QIO_[version].bin 包含bootloader的完整目标文件
•	  tuyaos_demo_xx_UG_[version].bin OTA升级固件包文件

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综上：出现配网成功后就离线的问题可能是设备获取tc link key失败，导致该问题的原因可能是：

1.网关读取basic cluster下属性注册到云端，app上刚刚跳出子设备界面后，用户就退出了配网界面，这时候由于退出了配网模式导致设备获取tc link key失败

2.大规模设备配网 并发入网较多，网关进行处理忙碌导致设备获取tc link key没有被响应

3.由于干扰等因素，导致子设备request key，网关transport ，后续的 verify 和confirm 及其 APS ACK没有被响应导致tc link key交互失败

建议使用者采取以下措施规避：

1.使用网关本地按键（短按一下）开启长配网，长配网模式网关会在设备tc link key交互后才会向云端注册，解决了设备还会由于tc link key没有获取到而离线的问题

2.app配网时出现子设备面板界面后不要直接退出界面，在该界面等待 30s ，可以使得网关处于配网状态，便于子设备获取tc link key

3.参考 4.1章节排查wifi干扰对于交互的影响

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•   如上图网关信道20,对应wifi 8和9 信道 
•   我们就查看8和9信道下的干扰数.上图所示确实有干扰 

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•   将网关远离WiFi路由器
•   或者是切换并固定wifi信道，是的wifi信道与zigbee信道错开

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DP（Data Point）是描述一个设备对象功能点的抽象方式。DP 操作代表通过预定的功能特性来改变设备的状态，例如使用 开关 DP 来改变一个设备的开启和关闭。涂鸦定义了100以内为涂鸦公版DP，101-255为开发者自定义DP。

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DP常见类型有布尔型、数值型、枚举型、字符型、bitmap、透传（RAW）型。

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自定义DP为终端设备在接入涂鸦云端时，可以通过创建自定义DP进行个性化功能开发。

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#define PRIVATE_ATTR_LIST \
    {0x0000, ATTR_INT8U_ATTRIBUTE_TYPE, 1, (ATTR_MASK_TOKEN_FAST|ATTR_MASK_SINGLETON), 0, (UINT8_T*)0x00 }, /* current positiong lift percentage*/\
    {0xFFFD, ATTR_INT16U_ATTRIBUTE_TYPE, 2, (ATTR_MASK_READABLE), 0, (UINT8_T *)0x0002},

const TAL_ATTR_T g_private_attr_list[] = {
    PRIVATE_ATTR_LIST};

#define DEF_CLUSTER_PRIVATE_CLUSTER_ID(a) \
    { CLUSTER_PRIVATE_TUYA_CLUSTER_ID, (TAL_ATTR_T *)&((a)[0]), GET_ARRAY_LEN((a)) },

CONST TAL_CLUSTER_T app_server_cluster_list[] = {
    DEF_CLUSTER_PRIVATE_CLUSTER_ID(g_private_attr_list)

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网关下发DP至模组：      0x04
模组应答网关下发DP:     0x05
模组主动上报DP至网关:   0x06

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TAL_MSG_RET_E tal_zcl_specific_msg_recv_callback(TAL_ZCL_MSG_T *msg)
switch(msg->cluster)
    case 0xEF00{
        switch(msg->command){
            case 0x04 :{
                    air_data_response(msg->dst_ep,  
                    msg->len, &(msg->playload[0]), 0x05, QOS_1)
            }
        }

    }
    ...

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air_data_response(uint8_t ep, uint8_t len uint8_t *data, uint8_t command_id TAL_SEND_QOS_E qos ){
    tal_system_memset(&send_data, 0, SIZEOF(TAL_ZG_SEND_DATA_T));

    send_data.qos = qos;
    send_data.delay_time = 0;
    send_data.zcl_id = 0x68;

    send_data.direction = ZG_ZCL_DATA_SERVER_TO_CLIENT;
    send_data.frame_type = ZG_ZCL_FRAME_TYPE_SPEC_TO_CLUSTER;
    send_data.command_id = command_id;/*respose cmd 0x05 */
    send_data.addr.mode = SEND_MODE_DEV;
    send_data.addr.type.dev.cluster_id = 0xEF00;
    send_data.addr.type.dev.src_ep = ep;
    send_data.data.private.len = len;
    memcpy((send_data.data.private.data), data, len);

    tal_zg_clear_send_data(ZG_CLEAR_ALL_ZCL_ID, &send_data.zcl_id);
    tal_zg_send_data(&send_data, NULL, 2000);
}

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tal_system_memset(&send_data, 0, SIZEOF(TAL_ZG_SEND_DATA_T));

send_data.qos = QOS_1;
send_data.delay_time = 0;
send_data.zcl_id = 0x68;

send_data.direction = ZG_ZCL_DATA_SERVER_TO_CLIENT;
send_data.frame_type = ZG_ZCL_FRAME_TYPE_SPEC_TO_CLUSTER;
send_data.command_id = 0x06;/*report cmd*/

send_data.addr.mode = SEND_MODE_DEV;
send_data.addr.type.dev.dst_addr = TUYA_GATEWAY_ADDRESS;
send_data.addr.type.dev.dst_ep = 0x01;
send_data.addr.type.dev.src_ep = TUYA_PRIMARY_ENDPOINT;
send_data.addr.type.dev.cluster_id = CLUSTER_PRIVATE_TUYA_CLUSTER_ID;
send_data.data.private.len = 7;
send_data.data.private.data[2] = 101; /* DP id*/
send_data.data.private.data[3] = ATTR_ENUM8_ATTRIBUTE_TYPE; /*DP type*/
send_data.data.private.data[4] = 0x00;
send_data.data.private.data[5] = 0x01;/*DP len*/
send_data.data.private.data[6] = day_up_down_change_flag; /*DP data*/

tal_zg_clear_send_data(ZG_CLEAR_ALL_ZCL_ID, &send_data.zcl_id);
tal_zg_send_data(&send_data, NULL, 2000);

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/*
 * zigbee poll configuration
*/
typedef struct {
    UINT8_T   forever_flag;             ///< TRUE: forever poll if device no network(TAL_ZG_NWK_POWER_ON_ONLINE/TAL_ZG_NWK_JOIN_OK/TAL_ZG_NWK_REJOIN_OK)
    UINT8_T   fast_swicth_parent;       ///< TRUE: if ack isn't received, will continue polling until the max number of failures is reached before switching the parent
    UINT16_T  interval_ms;              ///< poll period (bet: ms)
    UINT16_T  max_failed_times;         ///< enter parent-lost status when poll failed x times.
    UINT16_T  duration_after_data_ms;   ///< tiemout waitting app ack (bet: ms)
    UINT_T    duration_after_join_ms;   ///< wakeup time when join success.(for gateway get cluser data) (bet:ms)
    UINT_T    duration_after_rejoin_ms; ///< wakeup time when rejoin success.(for app use) (bet:ms)
} TAL_ZG_POLL_CFG_T;

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/*
 * zigbee end-device rejoin config
*/
typedef struct {
    UINT8_T  power_on_active;       ///< auto rejoin when power on.
    UINT8_T  send_data_active;      ///< auto rejoin when send data if parent lost.
    UINT8_T  reserved;              ///< Reserved
    UINT8_T  attempts;              ///< max rejoin attempts when parent lost.
    UINT16_T interval;              ///< rejoin attempt interval when parent lost.
} TAL_ZG_REJOIN_CFG_T;

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/**
 * @brief register router or sleep device
 * @return none
 */
STATIC VOID_T app_sleep_device_node_init(VOID_T)
{
    // sleep end device node init
     TAL_ZG_NODE_CFG_T node_config = {
         .node_type = ZG_SLEEPY_END_DEVICE,
         .tx_power = 10,
         .scan_interval = 100,
         .scan_duration = ZG_SCAN_DURATION_3,
         .config.sleep_ed_cfg.poll_config.forever_flag = 1,
         .config.sleep_ed_cfg.poll_config.fast_swicth_parent = 1,
         .config.sleep_ed_cfg.poll_config.interval_ms = 250,
         .config.sleep_ed_cfg.poll_config.max_failed_times = 10,
         .config.sleep_ed_cfg.poll_config.duration_after_data_ms = 1000,
         .config.sleep_ed_cfg.poll_config.duration_after_join_ms = 60000,
         .config.sleep_ed_cfg.poll_config.duration_after_rejoin_ms = 15000,
         .config.sleep_ed_cfg.rejoin_config.power_on_active = 1,
         .config.sleep_ed_cfg.rejoin_config.send_data_active = 1,
         .config.sleep_ed_cfg.rejoin_config.attempts = 3,
         .config.sleep_ed_cfg.rejoin_config.interval = 3000,
     };
    //config zigbee node
    tal_zg_node_config(&node_config);
}

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forever_flag 表示在网时设备是否定时发送data request向父节点请求数据；
建议开启forever_flag的设备，一般会有网关下发给该设备数据的机制，比如单火开关；
像门磁等只有状态上报而没有下发交互的设备，可以将forever_flag置为false。

fast_swicth_parent 一般用于forever_flag false 时快速判断是否与父节点断开链接
forever_flag false 时设备通过比如按键等触发数据上报，如果父节点没有数据响应，设备会最多发送 fast poll times+short poll times的data request；这个次数可能没有达到 max_failed_times。这使得一次按键没法让设备触发rejoin，需要多次按键才能让设备进行rejoin。而fast_swicth_parent 置为 TRUE后，一次按键附带的data request将会为max_failed_times 一次就会触发rejoin。

interval_ms 是设置 data request的发送间隔

max_failed_times 是发送多少次data request直到触发rejoin

duration_after_data_ms / interval_ms 是forever_flag = false时，在网发送一次数据后持续的data request次数

duration_after_join_ms / interval_ms 是forever_flag = false时，配网成功时持续的data request次数

duration_after_rejoin_ms / interval_ms 是forever_flag = false时，rejoin成功时持续的data request次数

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power_on_active 是 lost状态 上电主动触发rejoin机制，建议开启

send_data_active 是 lost状态 发数据时触发rejoin机制，建议开启

attempts 是lost状态 触发rejoin机制一组发多少次beacon request

attempts 是lost状态 触发rejoin机制一组隔多久发一次beacon request

如上图所示：一次rejoin尝试3次beacon request，每次beacon request间隔3秒

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1.产测部分代码sdk底层托管，应用层不需要再实现相关的串口交互

2.同时需要注意的不要在产测中添加耗时很久的设备操作，比如下图：
在进入产测处理函数中初始化IIC操作的外设，耗时过久导致上位机下发的后续数据设备无法收到

3.无法定位问题时，先将demo编译产物上传涂鸦后台，进行烧录授权，确保demo烧录授权可以正常完成，确保环境没有问题