Hi James, Which Port Pins of Beaglebone Red you have connected to which pins of Arduino, and the output of that port pin properties in /sys we might be able to help.
Thanks Manav On 6/10/16, [email protected] <[email protected]> wrote: > > That did not help unfortunately, thanks anyway. > On Friday, June 10, 2016 at 10:46:44 AM UTC-4, RobertCNelson wrote: >> >> Hi James, >> >> On Fri, Jun 10, 2016 at 9:42 AM, <[email protected] <javascript:>> >> wrote: >> > I am trying to get an arduino to communicate with the BeagleBone Black >> and >> > send some measured sensor data over via the serial port. I am using the >> > >> most >> > recent version of node red to do this. I am running the latest version >> of >> > Debian. >> > >> > I have confirmed using an oscilloscope that the arduino's serial port is >> > >> > outputting the information when it is supposed to (it's triggered by an >> > >> > interrupt sent by the BBB). I can see the serial ports that are >> supposedly >> > enabled in /dev and they appear as ttyO1, ttyO2, and ttyO4, and I have >> > confirmed the port mapping and ruled out wiring issues as well (I'm >> using a >> > logic level converter to go from the arduino's 5V to the BBB's 3.3V >> level). >> > >> > The ports also appear to map like so: >> > >> > lrwxrwxrwx 1 root root 5 Jun 9 22:37 ttyO1 -> ttyS1 >> > lrwxrwxrwx 1 root root 5 Jun 9 22:37 ttyO2 -> ttyS2 >> > lrwxrwxrwx 1 root root 5 Jun 9 22:37 ttyO4 -> ttyS4 >> > >> > Node red also sees these ports and indicated that they are 'connected' >> which >> > I assume means opened. >> > >> > When I attempt to receive data on the BBB from ANY of these ports I am >> > unable to see anything on the output in node red or from the command >> prompt. >> > >> > I am using a baud rate of 300 to rule out timing issues. I have also >> > confirmed that the arduino's serial settings should be matched to what >> the >> > BBB is expecting. Lastly, I have even tried sending simple strings from >> > >> one >> > serial port to the other on the BBB itself. >> > >> > Has anyone here had this sort of issue and if so, how did you come to a >> > >> > solution? >> >> By default, cape-universal is loaded, for BB-UART1 just do: >> >> config-pin P9.24 uart >> config-pin P9.26 uart >> >> and then /dev/ttyO1 will now work.. >> >> 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/a8e491c4-c39d-4812-bfbe-7346c5b315eb%40googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- Manavendra Nath Manav -- 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/CAJKgH8B0yX9NvvRLf2q7zGESUMh-w2GVOx2-JTJZpod0ZCEViQ%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
