On Wednesday, January 3, 2018 at 12:26:28 AM UTC-5, Terry Hock wrote: > > The Ultimeter is connected directly to the PI USB port, however, I do have > a USB hub for keyboard and mouse on one of the other PI USB ports. > I have also tried three different power supplies and get the same results, > with one being a 7 amp power supply. > The Pi is a: Raspberry Pi 2 Model B > I am not plugging any USB devices into the unit, I just let it run. >
something is not playing nice with the usb on your pi, resulting in a usb event that renumbers/reorders the usb devices. you don't notice it with the acurite hardware, because the weewx acurite driver looks for, opens, reads, then closes the acurite usb device each time it does a read (every 18 seconds). the acurite driver finds the acurite hardware using product/vendor codes, so usb reset will go unnoticed. you *do* notice it with the usb-to-serial converter, because the weewx ultimeter driver opens the connection once then keeps it open until weewx quits. this is because the peet bros hardware can emit data as fast as twice per second (way faster than acurite hardware!). so when a usb reset happens, the connection weewx had to the ultimeter goes away, weewx retries and fails 5 times, then quits. as a hack, use a udev rule so that weewx will always find your ultimeter at /dev/ultimeter. see the util/udev/rules.d/vantage.rules file and adjust the product/vendor codes to match your FTDI adapter. see the weewx wiki for more details: https://github.com/weewx/weewx/wiki/udevrules or better yet, fix whatever is borking your usb. look for usb-related events in the syslog just before the first ultimeter failures (before the log entries you posted). m -- 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.
