On Thu, Jul 6, 2017 at 3:18 PM, Timothy Litvin <[email protected]> wrote: > In my previous post I re-flashed the BBBlue because, after some amount of > poking around troubleshooting, on reboot somehow I had disabled all my > comms. So: clean slate. Reflash. I setup WIFI and, with an updated Debian > image, installed the most recent recipe for blue-arduplane, (the latest > build that pre-assigns the BBBlue GPS socket’s pins P9.21 and P9.22 as > UART): > > sudo apt update && sudo apt upgrade –y > > sudo apt install -y bb-cape-overlays cpufrequtils ardupilot-plane-blue > > sudo sed -i 's/GOVERNOR="ondemand"/GOVERNOR="performance"/g' > /etc/init.d/cpufrequtils > > cd /opt/scripts && sudo git pull > > sudo /opt/scripts/tools/update_kernel.sh --ti-rt-channel --lts-4_4 > > sudo reboot > > > > I use tio to query the pins (on ttyS2) and confirmed they’re UART. The blue > LED on the uBlox is blinking to indicate satellite lock. When I attempt to > connect to my uBlox M8n GPS, (blindly using 4800, 9600, 19200, 38400 baud on > that port) I still get no GPS data stream. So I checked the GPS output on > the o’scope and get 9600 baud pulses on the GPS’ Tx pin (and nothing on the > Rx pin). I try config-pin query again with: > > tio -b 9600 /dev/ttyS2 > > …and Jason’s one-liner tests > > stty -F /dev/ttyO2 ispeed 9600 ospeed 9600;tail -f /dev/ttyO2 > > …with no response from the GPS. > > Did I miss something?
Is there any chance the tx/rx is reversed on the ublox module? Regards, -- Robert Nelson https://rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CAOCHtYjCVn6j9nOo0vZRk3%2BEA%3DQg_y%2BnnRG02u2kocHwmTSMzA%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
