Hi all, I am back after a long period of doing other things and have started merging Matthew's latest code into my version of the driver, which uses only PyUSB v1 I am looking to create a unified version that works with both V0 and V1 APIs.
My system has been running without crashing for about 11 months, however there have been *unexpected events *that might be related to crashes here. Normally the system sends over 100 packets in every heartbeat interval of 20 seconds. But every now and again it slows right down - I have logged over 24000 occurrences where the system sent fewer than 10 packets in the 20 seconds. I don't know why - I intend to look in more detail at the timing for any trends that might help explain this. In the same 11 months, there were 1760 times when it sent zero data, and my code assumes the weather station console has gone to sleep and tries to kick it to life again. I don't know if this is necessary, but the system is usually happy with the process. On about half of these 1760 occasions when I read nothing, I "immediately" flush the read buffer and there is a burst of 22 packets (occasionally up to 26) within the 1 second. Whether this is the Linux side getting clogged up, or the WMR console, I can't tell. I don't even check what sort of packets they are, but I might start doing that (when I get the code working again) On 11 out of the 1760 occasions, the console refused to read the next A6 heartbeat packet and caused a timeout, but the system recovered and carried on. So, there are certainly still irregularities in the way the console and Linux drivers talk to each other. If these are timing issues leading to deadlock then it could easily explain why we see problems on one system and not another. There was one "unknown error" (code 99) from the USB lib while trying to read a loop packet. This triggered an exception and weewx restarted automatically, so that behaved as we would hope. Cameron. -- 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. For more options, visit https://groups.google.com/d/optout.
