Linkkit C SDK快速上云

更新时间:2018-12-28 23:11:06

简介

阿里云IoT提供了将设备接入云端需要的Linkkit C SDK,以便于非AliOS-Things设备能够快速接入阿里云。关于LinkKit SDK的介绍,请参考使用Link Kit SDK接入

为了帮助开发者快速使用Linkkit C SDK,Hacklab Web IDE已经提供了Linkkit C SDK中快速体验基于Make的交叉编译示例需要的开发环境和开发工具,使用Hacklab无需任何安装配置工作,就能让你快速体验使用Linkkit C SDK快速上云。

准备工作

  • 一个阿里云账号,新用户可以在阿里云免费注册

  • 一台装有浏览器的开发PC,运行本例子不需要额外的硬件设备,推荐使用Chrome浏览器。

  • 阅读Link Kit SDK 文档

例子:设备快速上云

接下来让我们使用Hacklab编译运行体验基础版例子。该程序在Linux环境中编译出一个通过MQTT协议连接云端的可执行程序,让开发者了解如何使用Link C SDK连接到阿里云物联网平台。

编译运行基础版例程

打开例子代码,填写设备三元组到例程中

可以使用IDE命令行中的wget命令下载需要的SDK版本, 或者直接点击这里
在你的Hacklab工作区打开该例子,如果是第一次访问这个Demo,请等待工作区初始化完毕。

目前Demo中使用的是Linkkit C SDK release 2.2.1版本的代码,如果需要其他版本,可以自行用wget下载对应代码到Hacklab Web IDE中。

从IDE左侧的文件树上打开文件iotx-sdk-c/examples/mqtt/mqtt-example.c,如下图所示:

image.png|center

用上一步中自己的设备三元组替换掉代码中测试三元组信息:

#if defined(SUPPORT_ITLS)

...
...

#else

    #if defined(ON_DAILY)
        ...
        ...
    #else
        #define PRODUCT_KEY             "a1ExpAkj9Hi"
        #define DEVICE_NAME             "Example1"
        #define DEVICE_SECRET           "cNzcn2Lbqzh4UiXKLwW77hxI9GFmcRgb"
    #endif

#endif

编译基础版例程

在IDE terminal中输入以下命令编译出设备端的可执行程序,编译成功完成后, 生成的样例程序在当前路径的 output/release/bin 目录下:

$ cd ~/iotx-sdk-c
$ make distclean
$ make

编译完成后,输出output/release/bin/mqtt-example

image|center

运行基础版例程

$ cd ~/iotx-sdk-c
$ ./output/release/bin/mqtt-example
[inf] iotx_device_info_init(39): device_info created successfully!
[dbg] iotx_device_info_set(49): start to set device info!
[dbg] iotx_device_info_set(63): device_info set successfully!
[inf] guider_print_dev_guider_info(279): ....................................................
[inf] guider_print_dev_guider_info(280):           ProductKey : a1ExpAkj9Hi
[inf] guider_print_dev_guider_info(281):           DeviceName : Example1
[inf] guider_print_dev_guider_info(282):             DeviceID : a1ExpAkj9Hi.Example1
[inf] guider_print_dev_guider_info(284): ....................................................
[inf] guider_print_dev_guider_info(285):        PartnerID Buf : ,partner_id=example.demo.partner-id
[inf] guider_print_dev_guider_info(286):         ModuleID Buf : ,module_id=example.demo.module-id
[inf] guider_print_dev_guider_info(287):           Guider URL :
[inf] guider_print_dev_guider_info(289):       Guider SecMode : 2 (TLS + Direct)
[inf] guider_print_dev_guider_info(291):     Guider Timestamp : 2524608000000
[inf] guider_print_dev_guider_info(292): ....................................................
[inf] guider_print_dev_guider_info(298): ....................................................
[inf] guider_print_conn_info(256): -----------------------------------------
[inf] guider_print_conn_info(257):             Host : a1ExpAkj9Hi.iot-as-mqtt.cn-shanghai.aliyuncs.com
[inf] guider_print_conn_info(258):             Port : 1883
[inf] guider_print_conn_info(261):         ClientID : a1ExpAkj9Hi.Example1|securemode=2,timestamp=2524608000000,signmethod=hmacsha1 ...
[inf] guider_print_conn_info(263):       TLS PubKey : 0x437636 ('-----BEGIN CERTI ...')
[inf] guider_print_conn_info(266): -----------------------------------------
[inf] IOT_MQTT_Construct(3005):      CONFIG_MQTT_SUBTOPIC_MAXNUM : 65535
[dbg] IOT_MQTT_Construct(3007): sizeof(iotx_mc_client_t) = 1573144!
[inf] iotx_mc_init(2098): MQTT init success!
[inf] _ssl_client_init(142): Loading the CA root certificate ...
[inf] _ssl_client_init(149):  ok (0 skipped)
[inf] _TLSConnectNetwork(315): Connecting to /a1ExpAkj9Hi.iot-as-mqtt.cn-shanghai.aliyuncs.com/1883...
[inf] mbedtls_net_connect_timeout(257): setsockopt SO_SNDTIMEO timeout: 10s
[inf] mbedtls_net_connect_timeout(260): connecting IP_ADDRESS: 106.15.100.2
[inf] _TLSConnectNetwork(328):  ok
[inf] _TLSConnectNetwork(333):   . Setting up the SSL/TLS structure...
[inf] _TLSConnectNetwork(343):  ok
[inf] _TLSConnectNetwork(382): Performing the SSL/TLS handshake...
[inf] _TLSConnectNetwork(390):  ok
[inf] _TLSConnectNetwork(394):   . Verifying peer X.509 certificate..
[inf] _real_confirm(90): certificate verification result: 0x00
[wrn] MQTTConnect(204): NOT USING pre-malloced buf 0xc4a010, malloc per packet
[dbg] MQTTConnect(204): ALLOC: curr buf = 0xc56890, curr buf_size = 320, required payload_len = 256
[dbg] MQTTConnect(224): FREED: curr buf = (nil), curr buf_size = 0
[inf] iotx_mc_connect(2449): mqtt connect success!
...
...
mqtt_client|309 :: packet-id=7, publish topic msg={"attr_name":"temperature", "attr_value":"1"}
[dbg] iotx_mc_cycle(1591): PUBACK
event_handle|132 :: publish success, packet-id=7
[dbg] iotx_mc_cycle(1608): PUBLISH
[dbg] iotx_mc_handle_recv_PUBLISH(1412):         Packet Ident : 00035641
[dbg] iotx_mc_handle_recv_PUBLISH(1413):         Topic Length : 26
[dbg] iotx_mc_handle_recv_PUBLISH(1417):           Topic Name : /a1ExpAkj9Hi/Example1/data
[dbg] iotx_mc_handle_recv_PUBLISH(1420):     Payload Len/Room : 45 / 992
[dbg] iotx_mc_handle_recv_PUBLISH(1421):       Receive Buflen : 1024
[dbg] iotx_mc_handle_recv_PUBLISH(1432): delivering msg ...
[dbg] iotx_mc_deliver_message(1170): topic be matched
_demo_message_arrive|166 :: ----
_demo_message_arrive|167 :: packetId: 35641
_demo_message_arrive|171 :: Topic: '/a1ExpAkj9Hi/Example1/data' (Length: 26)
_demo_message_arrive|175 :: Payload: '{"attr_name":"temperature", "attr_value":"1"}' (Length: 45)
_demo_message_arrive|176 :: ----
...
...
main|361 :: out of sample!

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