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ro rootfstype=ext4 rootwait fixrtc quiet [ 0.000426] WARNING: Your 'console=ttyO0' has been replaced by 'ttyS0' [ 2.654234] 44e09000.serial: ttyS0 at MMIO 0x44e09000 (irq = 88, base_baud = 3000000) is a 8250 [ 2.671940] console [ttyS0] enabled [ 2.673157]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.
