Thanks, Tom! I'll take a stab at the MAX3232 circuit and see what I can get running. Will post back, if the info might help someone else!
Regards, Michael K6MLE On Monday, February 6, 2017 at 3:57:28 PM UTC-8, Tom Keffer wrote: > > 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] > <javascript:>> 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] <javascript:>. >> 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.
