all you can do really is write a service, which you bind to a LOOP packet, and do your serial output froom that service. The danger is that the service may block weewx if there is an issue with the output serial connection. weewx itself cannot do what you are trying to do. the LOOP data for a record is not kept by weewx, so you cannot output LOOP data 'after creating record and web pages'. Another approach might be for the service you write to create an output file of the LOOP data and have a non weewx program looking for this file, processing it and deleting it once processed. There are several ways you could try - but all require development and definition and are not part of weewx. Why are you wanting to output the LOOP data to another machine??
On Wednesday, 14 August 2019 12:11:19 UTC+3, boke wu wrote: > > something like: >> > > VP2 in ttyUSB1 (send data ) => Weewx ( save archive ,make web page....) > > Weewx (After weewx done everything , open serial port in ttyUSB2 and write > loop data) => My other RS232 device (receive string loop data and logging) > -- 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/230a6ac2-3ecd-42fd-a667-52062d1994c6%40googlegroups.com.