Hello again! I'm trying to solve a minor problem. I made a systemd service which starts my program automatically. My problem is that my program is starting too early which causes this error:
AssertionError: pruio_new failed (b'cannot open /dev/uio5') The program will exit and the systemd service will keep restarting the program until eventually (less than a minute) the program will run successfully. Here is my systemd service file: [Unit] After=generic-board-startup.service libpruio-lkm.service StartLimitIntervalSec=0 [Service] Type=simple Restart=always User=debian WorkingDirectory=/opt/rad/virtual_sensor ExecStart=/opt/rad/virtual_sensor/virtual_sensor [Install] WantedBy=multi-user.target I realize that since the libpruio-lkm service doesn't exit, putting it in the 'after' section doesn't really make sense. Surely someone has dealt with this problem before, but I couldn't find it while searching. On Friday, August 21, 2020 at 1:49:01 AM UTC-5 TJF wrote: > Am Donnerstag, 20. August 2020 20:27:41 UTC+2 schrieb andrew...@gmail.com: >> >> Sorry about that. >> > >> My adc measurements are good and stable. My only issue now is that I >> can't seem to enable the serial port under libpruio. I'll post my code here: >> > > Apology accepted. > > Fine, that ADC is OK. I hope your code calls the destructor > pruio_destroy() at the end. > > >> I tried every mode from 0 to 7 and got the same result. >> > > You configured the hardware, but I guess you didn't care about the > software. Did you load the UArt kernel driver? > > When you configure pins from a device tree blob the kernel also loads the > matching driver. In contrast, libpruio doesn't inform the kernel about > changes. It's under your control to make this happen. > > If you're sure that you want Uart-1 on P9_24/P9_26, and that wont change, > then it's best to install a custom device tree blob for that two pins. > Check out the docs for section Custom overlay > <http://users.freebasic-portal.de/tjf/Projekte/libpruio/doc/html/ChaPins.html#sSecCustom>. > > You can use the tool src/config/dts_custom.bas > <http://users.freebasic-portal.de/tjf/Projekte/libpruio/doc/html/dts__custom_8bas.html> > > to create that blob in folder /lib/firmware. Your configuration (edit in > source and compile) should look like > > M(P9_24) = CHR(0) >> > M(P9_26) = CHR(0) >> > > Perhaps you also want to adapt the file name. When the .dtbo file is in > place, edit /boot/uEnv.txt to load it and reboot. > > Regards > -- 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 beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/6ef84d84-5d6b-4ed5-93ea-b9d8c588a95cn%40googlegroups.com.
