Payload Decoder Tool

A tool for decoding decrypted, base64 encoded, sensor payloads from Carnegie Technologies' sensors into human-readable JSON. The decoder functions are standalone from the tool and can also be used as examples for implementing sensor decoders in other projects.

This tool supports the following Carnegie sensors:

• HybridGps/Asset Tracker v2
• Push button (1 and 3 button)
• Level sensor

This tool only supports decoding messages containing sensor readings, it cannot be used to decode other messages that may be sent by the sensors.

Usage

Install from npm

with npm

npm install -g @carnegietech/ct-sensor-payload-decoder

or with yarn

yarn global add @carnegietech/ct-sensor-payload-decoder

after installing, ct-sensor-payload-decoder can be run with

ct-sensor-payload-decoder

Compile it yourself

Clone the repo and run

yarn
make compile

Then run the tool with

build/ct-sensor-payload-decoder

Commands

The main command the tool offers is decode. This command requires a payload argument.

ct-sensor-payload-decoder decode --payload="AAAAChkoAwTBgHjgSdQqhGSDa/gWdtbrwwAFCzxQ"

This will attempt to choose the correct decoder for the given payload. If you wish, you can also force the choice of decoder.

ct-sensor-payload-decoder decode --decoder="hybridGps" --payload="AAAAChkoAwTBgHjgSdQqhGSDa/gWdtbrwwAFCzxQ"