Fledge "ThingSpeak" C++ North Plugin

This is a Fledge north plugin for talking to the MathWorks ThingSpeak web API. This allows buffered reading to be sent to the ThingSpeak API and further analysed in MATLAB. https://thingspeak.com

Configuration

The following configuration options exist for the plugin

url

The URL of the ThingSpeak API, this should normally be left as the default https://api.thingspeak.com/channels

source

The source of data to send, either redings or statistics

channelId

The ChannelID has setup in the ThingSpeak interface

write_api_key

The write_api_key as obtained from the ThingSPeak interface

fields

A defintion of the fields to be send. This is a JSON document with an array called elements, each item in the array is a JSON object with the properties asset and reading. Asset is the asset name and reading is the datapoitn within the asset. The default for this element is an example of how to send data fromthe siusoid plugin.

Build

To build Fledge "ThingSpeak" C++ filter plugin:

$ mkdir build
$ cd build
$ cmake ..

• By default the Fledge develop package header files and libraries are expected to be located in /usr/include/fledge and /usr/lib/fledge
• If FLEDGE_ROOT env var is set and no -D options are set, the header files and libraries paths are pulled from the ones under the FLEDGE_ROOT directory. Please note that you must first run 'make' in the FLEDGE_ROOT directory.

You may also pass one or more of the following options to cmake to override this default behaviour:

• FLEDGE_SRC sets the path of a Fledge source tree
• FLEDGE_INCLUDE sets the path to Fledge header files
• FLEDGE_LIB sets the path to Fledge libraries
• FLEDGE_INSTALL sets the installation path of Random plugin

NOTE:

• The FLEDGE_INCLUDE option should point to a location where all the Fledge header files have been installed in a single directory.
• The FLEDGE_LIB option should point to a location where all the Fledge libraries have been installed in a single directory.
• 'make install' target is defined only when FLEDGE_INSTALL is set

Examples:

• no options

  $ cmake ..

• no options and FLEDGE_ROOT set

  $ export FLEDGE_ROOT=/some_fledge_setup

  $ cmake ..

• set FLEDGE_SRC

  $ cmake -DFLEDGE_SRC=/home/source/develop/Fledge ..

• set FLEDGE_INCLUDE

  $ cmake -DFLEDGE_INCLUDE=/dev-package/include ..

• set FLEDGE_LIB

  $ cmake -DFLEDGE_LIB=/home/dev/package/lib ..

• set FLEDGE_INSTALL

  $ cmake -DFLEDGE_INSTALL=/home/source/develop/Fledge ..

  $ cmake -DFLEDGE_INSTALL=/usr/local/fledge ..