Unfortunately, I am not an expert at this --- I regard hardware as a necessary evil to run software. :-)
Here's the definitive guide to getting around the serial lock out problem: *A fix for the firmware v. 3.xx problem in Davis Instruments Corp. weather stations by Torkel M. Jodalen <http://meteo.annoyingdesigns.com/DavisSPI.pdf>* Good luck! -tk On Mon, Feb 6, 2017 at 3:45 PM, Michael Picco <[email protected]> wrote: > > > On Monday, February 6, 2017 at 6:23:38 AM UTC-8, Tom Keffer wrote: >> >> I'm not sure what you're trying to do. >> >> Do you own a logger? If so, why would you want to use it to "pull the >> data out and convert to RS232 levels?" Why not just use it directly? >> > > Since the RPi is 3.3 volts, the data coming from the data logger needs to > be buffered to the 3.3 volt level, instead of it's current RS232 levels. > >> >> If you don't own a logger, are you trying to avoid buying one by >> connecting your VP2 directly to the RPi via serial line? If this is the >> case then, yes, the serial line of more recent "Green dot" consoles gets >> locked down, preventing communication. There are ways around this, but they >> require some hardware. >> > > And that hardware might be addressed by putting a MAX3232 into the > circuit? > >> >> -tk >> >> >> >> On Sun, Feb 5, 2017 at 8:48 PM, Michael Picco <[email protected]> wrote: >> >>> Hello, >>> >>> I have an RPi properly configured to allow the /dev/ttyAMA0 serial port >>> to work. To verify this, I've jumpered pins 8 & 10 on the RPi GPIO >>> connector, so data is looped back as I type. When connecting the VP2 and >>> running 'sudo wee_device' I get:"weewx.WakeupError: Unable to wake up >>> Vantage console", as the last line. The VP2 firmware is version 3.15, >>> which I think falls into the little trap created by the folks at Davis >>> Instruments, where they don't want you using their serial port to extract >>> data, unless you purchase one of their expensive add-ons (data logger). >>> >>> Could I be correct, in that my suspicion is a firmware problem? If so, >>> the only thing I can see to do is use one of their data loggers to pull the >>> data out and then convert it from RS232 levels (their data logger output) >>> back to 3.3 volt levels suitable for the RPi. >>> >>> Does anyone else have other ideas? Am I on the right track? >>> >>> Thanks! >>> >>> Michael >>> K6MLE >>> >>> >>> -- >>> 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 [email protected]. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> -- > 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 [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- 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 [email protected]. For more options, visit https://groups.google.com/d/optout.
