Meiker Studio - Huawei 14 day Hongmeng equipment development practical notes 8

One .OpenHarmony Network application development —— Connect to Huawei loT platform

1. Huawei loT Platform is introduced

Huawei cloud IOT platform is Huawei device access service (IoT Device Access), Provide massive devices to connect to the cloud 、 Two way messaging between devices and the cloud 、 Batch equipment management 、 Remote control and monitoring 、OTA upgrade 、 Equipment linkage rules and other capabilities , And the device data can be transferred , The live stream is transferred to other services of Huawei cloud , Help Internet of things industry users quickly complete equipment networking and industry application integration .

Huawei IoT Platform address : ​ ​https://www.huaweicloud.com/product/iothub.html​​

2. Huawei loT Platform product creation

The product model is used to describe the capabilities and characteristics of the equipment . Developers define product models , Build an abstract model of devices on the Internet of things platform , Make the platform understand the services supported by this device 、 attribute 、 Information such as orders , Such as color 、 Switch, etc .

3. Huawei IoT Platform product creation

Service information ：

service ID	Service type
Agriculture	Senser

Attribute information ：

The attribute name	data type
Temperature	int
Humidity	int
Luminance	int
LightStatus	string
MotorStatus	string

Command message ：

Command name	Parameter name	data type	length	enumeration
Agriculture_Control_light	light	string	3	ON,OFF
Agriculture_Control_Motor	Motor	string	3	ON,OFF

4. Equipment docking with Huawei loT platform

open "D6_iot_cloud_oc" engineering iot_cloud_OC_sample.c file , See the implementation MQTT The agreement connects Huawei IoT Platform code .

Generate device docking information website : ​ ​https://iot-tool.obs-website.cn-north-4.myhuaweicloud.com/​​

5. Equipment docking with Huawei loT platform

The case will demonstrate how to BearPi-HM_Nano Use on development board MQTT The protocol connects Huawei IoT platform , Need to put E53_IA1 Smart agriculture expansion board and BearPi-HM_Nano The development board is installed together .

E53_IA1 Smart agriculture expansion board purchase address : ​ ​https://item.taobao.com/item.htm?id=607878490044​​