devify-chunk-store

IoT chunk store that is abstract-chunk-store compliant built using memory as the storage backend.

A use case of devify-server.

Quickstart

Install devify-chunk-store and start the server.

$ git clone https://github.com/jollen/devify-chunk-store
$ cd devify-chunk-store
$ npm install
$ export HOST=192.168.0.100
$ export PORT=8000
$ node store.js

The server is running at 192.168.0.100:8000 and provide the REST API coap://192.168.0.100:8000/object/12345678/send. To send data to devify-chunk-store via CoAP, use the following message format.

{
	"index": 0,
	"chunk": "<payload>"
}

• index: the index of the chunk data
• chunk: the chunk data

The following examaple shows how to send sensor data to IoT server via CoAP using ESp8266/NodeMCU and Lua programming language.

-- Configure the ESP as a station (client)
wifi.setmode(wifi.STATION)  
wifi.sta.config("<SSID>", "<PASSWORD>")  
wifi.sta.autoconnect(1)

-- Create a CoAP client
cc = coap.Client()

-- Make a POST request
uri="coap://192.168.0.100:8000/object/12345678/send"

-- Setup a timer to send ADC data
tmr.alarm(0, 1000, 1, function() 
    buf = 
          "{" ..
          "index": 0 ..
          "\"chunk\":" ..
          adc.read(0) ..
          "}"
    
    cc:post(uri, buf)
    print(buf)
end)

License

The MIT License. See LICENSE.md.