If you have the ability to provide a delimited text file with your obs and timestamp then fileparse will certainly work for you and it will be a straightforward and quick setup. However, if you already have some code to read observations from your station/datalogger you pretty much have all you need for your own driver. In a nutshell, all a driver does is run an infinite loop obtaining data from the station, converting units as required, packaging the data in a python dictionary and passing the dictionary on to WeeWX. The fileparse driver is a good example of a basic driver, you could just remove the code that reads data from a fie and substitute your code or a call to a method that reads data from your station/datalogger. At the very least the data will need to be massaged into a python dictionary (ie a loop packet), but that is easy to do. There will be a few things to watch for, for example: handling units, dealing with missing data and making sure the driver does not block the main WeeWX loop (typically an issue when reading from high latency devices or via a network). You already have code running to read data from the datalogger/station and post to WU, you could potentially have WeeWX reading data direct from your datalogger/station and let WeeWX handle uploading to WU (and other services as well) - that way you are reading data from your datalogger/station once only.
Have a look at the Porting to new hardware section <http://weewx.com/docs/4.10/customizing.htm#porting> in the Customization Guide <http://weewx.com/docs/4.10/customizing.htm>. It's quite a simple process and quite satisfying once complete. Also, just post back here if have any questions. Gary On Wednesday, 20 September 2023 at 11:14:54 UTC+10 craig.y...@gmail.com wrote: > Maybe it would be better to use the driver: fileparse.py. > > > On Wednesday, September 20, 2023 at 12:18:25 PM UTC+12 Craig Young wrote: > >> Maybe I should try a new tact. I have a datalogger which is outputting >> weather data every 15 seconds and is received on the Raspberry Pi through >> the USB0 serial port. Using CuteCom here is a sample data record: >> >> <"2023-09-20 >> 12:11:30",13.65,24.91,737,0,0,0,0,1.5,167,1.96,18.1,1.52,101.15,0.745,21.3,0.8,-1.1,-14.1105,0.5613659,323.5677>␍␊ >> I have written the program on the datalogger to do this so I can change >> the data format if needed. >> >> What I need to do now is import this into weewx. I assume I need a >> driver (or extension?) to do this but that is where the problems begin. >> This is not for the feint of heart. I have written tons of software in >> other languages for other applications, but all on windows. I have a >> Raspberry Pi now running and have written a small python program to use the >> Serial instruction to read the data stream and even post this after >> formatting to wunderground. So I am not stupid, just a very long learning >> curve to do a simple thing. >> I found the TWI.py driver and it looks simple enough to modify for this >> application, but given my inexperience with linux and weewx I see lots of >> problems ahead. >> >> Is there someone on here who could spend a couple of hours or so on >> Discord or Skype to help me either modify TWI.py or write a new driver for >> weewx? >> >> Craig >> On Wednesday, September 20, 2023 at 10:44:51 AM UTC+12 Craig Young wrote: >> >>> I have installed and configured a new driver in my weewx installation, >>> TWI.py. But before I launch weewx I need to make a couple of changes to >>> the driver. What is the correct method for doing that? Do I: >>> 0: Stop weewx >>> 1. Open driver (located in usr folder) with Thonny >>> 2. Make the changes and save >>> 3. Start weewx >>> or do I need to reconfigure it first? >>> >>> -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to weewx-user+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/e2d7baf3-9bd6-4042-acf2-19cdcfd7184dn%40googlegroups.com.
