Deploy mbed IoT cloud
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The document outlines the mbed Device Connector and its benefits, including compatibility with mbed OS and the LwM2M protocol, facilitating energy-efficient data communication and device management. It details the functionality of the mbed client library, which supports constrained networks and performs operations such as registration, resource management, and communication via CoAP. Additionally, it provides instructions for building and running mbed client applications using Yotta.
![HTTP 都是字串 text
13
int value = 1;
M2MResource* instance = objinst->create_dynamic_resource(“D",
“IntegerType“,M2MResourceInstance::INTEGER, true);
char buffer[20];
int size = sprintf(buffer,"%d",value);
instance->set_value((const uint8_t*)buffer, size);
float value = 1.023; --> FLOAT
bool value = true; --> BOOLEAN
char *str; --->STRING](https://image.slidesharecdn.com/2mbedcloud-160730054715/85/Deploy-mbed-IoT-cloud-13-320.jpg)
![編譯 mbed client
課程Sample Code
Install yotta tools
安裝說明 : http://blog.ittraining.com.tw/2016/06/raspberry-
pi-mbed-client.html
編譯mbed client
1) cd iot_demo/mbed-client-pi/mbed-linux/
2) change source/security.h
須登入 https://connector.mbed.com/ 產生security.h
[Security credentials]
3) yotta build
4) 執行程式:
build/arm-linux-native/source/mbed-client-
linux-example
18](https://image.slidesharecdn.com/2mbedcloud-160730054715/85/Deploy-mbed-IoT-cloud-18-320.jpg)
Deploy mbed IoT cloud
- 1. Introduction to mbed Device Connector Joseph 1 June 2017
- 3. Benefits of using mbed Device Connector Fully compatible with mbed OS and the LWM2M protocol (using the mbed Client library) Provides access to the ARM mbed IoT Device Ecosystem. Provides an example web application, accelerating proof of concept projects. Uses CoAP/HTTP, TLS/TCP, DTLS/UDP and OMALWM2M, enabling energy efficient data communication and device management. 3
- 4. mbed Device Connector Go to https://connector.mbed.com/ and log in with your mbed account. 4
- 5. 5
- 7. mbed Client mbed Client implements a subset of mbed OS functionality and is optimized for constrained networks and devices; it uses the Constrained Application Protocol (CoAP) to provide energy-efficient communication and supports security measures tailored for low-memory devices. 7
- 8. mbed Client 註冊 mbed Client Registration 1) Register 2) Update 3) Deregister Performs the Register operation and provides parameters that mDS requires to register the client (for example Endpoint Name). Maintains the registration and session (for example, it sets the Lifetime and Queue Mode towards mbed Device Server). Provides information on the Objects the client supports and existing Object Instances in the client. 8
- 9. Resources Path 9 GET /endpoints/endpoint1/3303/0/ Resources are categorized using the Lightweight Machine to Machine (LWM2M) protocol from the Open Mobile Alliance (OMA) 每個Endpoint就是一個 mbed client ObjectID/ObjectInstance/Resource RESTful API
- 10. mbed client 資源管理 mbed client即是一個endpoint擁有一堆resource mbed Device Server uses the Device Management and Service Enabler to access Object Instances and Resources available on the client 1) Create ---> Static or Dynamic Resource 2) Delete --> DELETE 3) Read ---> GET (Query Resource State) 4) Write---> Whenever there is a valid PUT operation for any of the resources, the application will receive a callback:(Set Resource State) 5) Execute -->When your Resource receives the POST request, mbed Client parses the payload from the request 10
- 11. Update Resource 11 Object Object Instance Resource Value GET : Set a value to this resource and return it POST : Execution a function GET POST /endpoints/endpoint1/Object/instance/resource *You need to periodically update the reso
- 12. mbed Client data types mbed Client is based on CoAP client. The Resource values are represented as text/plain format. Different data type values have to be converted into corresponding text/plain format. For example, an integer value 100 is passed in a text buffer format of 100 and it appears on the web service side as 100 in text format. The service must interpret this data to an appropriate format. 12
- 13. HTTP 都是字串 text 13 int value = 1; M2MResource* instance = objinst->create_dynamic_resource(“D", “IntegerType“,M2MResourceInstance::INTEGER, true); char buffer[20]; int size = sprintf(buffer,"%d",value); instance->set_value((const uint8_t*)buffer, size); float value = 1.023; --> FLOAT bool value = true; --> BOOLEAN char *str; --->STRING
- 14. build mbed client using yotta mbed OS applications as yotta executables yotta - to build the example programs. To learn how to build mbed OS applications with yotta. yotta is written in python, and distributed using pip, the python package manager Yotta tutorial • http://yottadocs.mbed.com/tutorial/tutorial.ht ml 14
- 15. Code architecture in ARM mbed client M2MInterfaceObserver Instance Resource Value Instance Resource Value M2MDe vice (option) M2M Security Object Object CoAP GET CoAP POST M2MObjectList mbed Device Connector M2MInterface M2MObject
- 16. Control Flow Initialize Hardware Peripherals create_interface () create_security() create_device_object() obj=create_object() obj-> instance->resource (BME280) Register All M2M Object List Generating multi-threads Get Value from BME280 Set value to resource Sensor Observer Catch SIGINT Signal ? yes Unregister Detach All Threads Periodically updating resource value Waiting for ‘Ctrl- C’ ? Threads Periodically updating registration for keep alive M2MObjectList obj=create_object() obj-> instance->resource (GPIO)
- 18. 編譯 mbed client 課程Sample Code Install yotta tools 安裝說明 : http://blog.ittraining.com.tw/2016/06/raspberry- pi-mbed-client.html 編譯mbed client 1) cd iot_demo/mbed-client-pi/mbed-linux/ 2) change source/security.h 須登入 https://connector.mbed.com/ 產生security.h [Security credentials] 3) yotta build 4) 執行程式: build/arm-linux-native/source/mbed-client- linux-example 18