> > *Hello,* > > > *I'm using ubuntu 14.04.2 and Adafruit BBIO library.* > > *When i execute: > (https://learn.adafruit.com/setting-up-io-python-library-on-beaglebone-black/uart > <https://learn.adafruit.com/setting-up-io-python-library-on-beaglebone-black/uart>)* > > *UART.setup("UART4")* > > *i detect this error* > > *RuntimeError: Unable to export UART channel.* >
Well going by what little information is at hand I can only guess that this "tutorial" is based on the 3.8.x kernel where there is a capemgr. kernel 3.14.x does not have a capemgr. But judging by the error output, this is exactly what the "library" is trying to do. Use capemgr through some sort of abstraction. Again though, this is working with the data at hand. As I know absolutely nothing about this framework, library, or whatever it is. You should probably contact the author as to why your code / configuration is not working. On Thu, May 14, 2015 at 8:28 AM, Alessio Rivetta <[email protected]> wrote: > Hello, > > I'm using ubuntu 14.04.2 and Adafruit BBIO library. > > When i execute: ( > https://learn.adafruit.com/setting-up-io-python-library-on-beaglebone-black/uart > ) > > UART.setup("UART4") > > i detect this error > > RuntimeError: Unable to export UART channel. > > > this is the print of: dmesg | grep tty > > [ 0.000000] Kernel command line: console=ttyO0,115200n8 quiet > drm.debug=7 capemgr.enable_partno=BB-UART1,BB-UART2,BB-UART4 > root=UUID=854463c0-6305-4e7b-b9e7-d2edbfa8b232 ro rootfstype=ext4 rootwait > fixrtc quiet > [ 0.000426] WARNING: Your 'console=ttyO0' has been replaced by 'ttyS0' > [ 2.654234] 44e09000.serial: ttyS0 at MMIO 0x44e09000 (irq = 88, > base_baud = 3000000) is a 8250 > [ 2.671940] console [ttyS0] enabled > [ 2.673157] 48022000.serial: ttyS1 at MMIO 0x48022000 (irq = 89, > base_baud = 3000000) is a 8250 > [ 2.674056] 48024000.serial: ttyS2 at MMIO 0x48024000 (irq = 90, > base_baud = 3000000) is a 8250 > [ 2.674871] 481a8000.serial: ttyS4 at MMIO 0x481a8000 (irq = 61, > base_baud = 3000000) is a 8250 > [ 2.675645] 481aa000.serial: ttyS5 at MMIO 0x481aa000 (irq = 62, > base_baud = 3000000) is a 8250 > > > this is the print of: ls -l /dev/tty* > > crw-rw---- 1 root root 5 May 14 15:19 /dev/ttyO0 -> ttyS0 > crw-rw---- 1 root root 5 May 14 15:19 /dev/ttyO1 -> ttyS1 > crw-rw---- 1 root root 5 May 14 15:19 /dev/ttyO2 -> ttyS2 > crw-rw---- 1 root root 5 May 14 15:19 /dev/ttyO4 -> ttyS4 > crw-rw---- 1 root root 5 May 14 15:19 /dev/ttyO5 -> ttyS5 > crw-rw---- 1 root tty 4, 64 May 14 15:20 /dev/ttyS0 > crw-rw---- 1 root dialout 4, 65 May 14 15:19 /dev/ttyS1 > crw-rw---- 1 root dialout 4, 66 May 14 15:19 /dev/ttyS2 > crw-rw---- 1 root dialout 4, 67 May 14 15:19 /dev/ttyS3 > crw-rw---- 1 root dialout 4, 68 May 14 15:19 /dev/ttyS4 > > this is the print of: uEnv.txt > > #Docs: http://elinux.org/Beagleboard:U-boot_partitioning_layout_2.0 > > uname_r=3.14.37-ti-r57 > #dtb= > cmdline=quiet > > #In the event of edid real failures, uncomment this next line: > #cmdline=quiet video=HDMI-A-1:1024x768@60e > > ##Example > #cape_disable=capemgr.disable_partno= > > optargs=quiet drm.debug=7 capemgr.enable_partno=BB-UART4 > > ##enable BBB: eMMC Flasher: > #cmdline=init=/opt/scripts/tools/eMMC/init-eMMC-flasher-v3.sh > > uuid=854463c0-6305-4e7b-b9e7-d2edbfa8b232 > > Thank you, > > Alessio > > -- > 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]. > For more options, visit https://groups.google.com/d/optout. > -- 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]. For more options, visit https://groups.google.com/d/optout.
