This project is designed as a way to read multiple sensors attached to a RaspberryPi. Eventually this project will use MQTT protocol to transport this information to a SQLite database for storage. It was originally designed to measure the environmental statistics such as temperature and humidity at various points in my yard, a beehive, and the garden.
This project was built on a RaspberyPi Zero that had various environmental sensors attached. At this time, the project only supports "w1" style sensor inputs but in the future I hope to incorporate more types.
Libconfuse - Used to read configuration variables from a file spdlog - Used to make logging easier g++ - Used for compiling
The program will look for a configuration file with the title "telemetry.cfg". Each sensor can be included in this configuration file. An example configuration file can be found in the "doc" directory.
There are also some default values put in if no configuration file is found.
You can specify a new configuration file by passing -f .
To compile use command: g++ telemetry.cc -L/usr/local/lib -lconfuse -o telemetry.out
(This will link the libconfuse library, but make sure it the -L points to wherever yoru libraries are setup)
The compiled file is named telemetry.out and can be run without any arguments. However, there are a few arguments that can be given to it using the following flags:
-h: Displays the help menu
-v: Displays the version
-f : Specifies the configuration file to use
-d <trace,debug,info,warn,error,critical>: Specify the log level (Info is set by default)
When the program is running correctly (i.e. Sensors are connected and correctlyput in the configuration file), it should continually output the payload that would be sent to the database in the info log (this is the default). An example of this output is:
"[2022-01-06 19:56:06.849] [main] [info] Next Payload: Thu Jan 6 19:56:06 2022,beehive,Nursery,18.312000"
Obviously if deeper logs are turned on you will see a lot more output.
IMPORTANT NOTE!!! If you don't have any sensors hooked up, only a few warnings will be shown. I recommend turning on trace level logs to see more.
Finding Serial Numbers - You can find these from teh sensor documentation. This will also provide the correct connection pattern to follow.
Timed Out - If you recieve a "Timed Out!" warning, there could be a few issues, but the main one would be that you don't have any sensors connected to the device, they are not w1 sensors, or the configuration file is not setup correctly.
Throughout most of the project Doxygen comment notation has been used. Further documentation in this format will be added at a later time.
The next step is to finish adding the MQTT pieces to transmit all of this data to a SQLite database to be stored for further use. It would then be cool to write a webapp or mobile app to view the data and what not. More sensor types would also be good to have