After giving it a great deal of thought and looking into various options, I’ve settled on a method to transfer data from the snow measurement system to the weather system. I am going to simply use SFTP within the python script that processes snow depth measurements to create a file with the measurement data and transfer that file to a known location on the weather system.<\/p>\n
The weather system (another Raspberry Pi) will have the responsibility for storing the snow data in it’s database and doing all of the processing needed to develop statistics and graphs.\u00a0 I will have to modify the database schema to use the new parameter.\u00a0 I will also have to write a new service that is executed by the weather software every 5 minutes.\u00a0 This service will go grab the data from the file that was uploaded by the snow depth system, check for errors, and provide a database entry for the measurement data.<\/p>\n
One nice thing about this approach is that I can completely test the measurement system without touching the weather system (other than perhaps some file permissions).\u00a0 Once the measurement system is working as expected I can use some fairly “standard” procedures to modify the database and add the new service.<\/p>\n
Come to think of it, I could also work on the weather system side independently just by creating a file with bogus measurement data in an alternate “known location” on the weather system.<\/p>\n
Next tasks to do:<\/p>\n
Once all that is done, I’ll have a look at changes to the weather system that need to be made.<\/p>\n","protected":false},"excerpt":{"rendered":"
After giving it a great deal of thought and looking into various options, I’ve settled on a method to transfer data from the snow measurement system to the weather system. I am going to simply use SFTP within the python … Continue reading