Hello!
I have BBB rev.C, and i need to enable two UARTs for use. I added to the /boot/uEnv.txt file cape_enable=capemgr.enable_partno=BB-UART1,BB-UART2 In response to ls - l /dev/ttyO* I get lrwxrwxrwx 1 root root 5 Oct 17 13:22 /dev/ttyO0 -> ttyS0 lrwxrwxrwx 1 root root 5 Oct 17 13:22 /dev/ttyO1 -> ttyS1 lrwxrwxrwx 1 root root 5 Oct 17 13:22 /dev/ttyO2 -> ttyS2 But after echo -ne '123' > /dev/ttyO2 (ot ttyO1, ttyS1, ttyS2), device connected to serial port not receive anything. In response to dmesg | grep tty* I get [ 0.000000] Kernel command line: console=ttyO0,115200n8 capemgr.enable_partno=BB-UART1,BB-UART2 root=UUID=4dfadb43-f008-4c9f-8003-74fa96a8fca8 ro rootfstype=ext4 rootwait coherent_pool=1M quiet cape_universal=enable [ 0.000392] WARNING: Your 'console=ttyO0' has been replaced by 'ttyS0' [ 0.174010] Setting up static identity map for 0x80008240 - 0x8000828c [ 2.969944] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <[email protected]> [ 3.500733] SGI XFS with ACLs, security attributes, realtime, no debug enabled [ 3.519677] 44e09000.serial: ttyS0 at MMIO 0x44e09000 (irq = 158, base_baud = 3000000) is a 8250 [ 3.527141] console [ttyS0] enabled [ 3.528209] 48022000.serial: ttyS1 at MMIO 0x48022000 (irq = 159, base_baud = 3000000) is a 8250 [ 3.529174] 48024000.serial: ttyS2 at MMIO 0x48024000 (irq = 160, base_baud = 3000000) is a 8250 [ 4.161179] omap_rtc 44e3e000.rtc: setting system clock to 2000-01-01 00:00:00 UTC (946684800) [ 12.284758] LUN: removable file: /var/cache/doc-beaglebone-getting-started/beaglebone-getting-started-2015-12-04.img uname -a Linux beaglebone 4.1.15-ti-rt-r43 #1 SMP PREEMPT RT Thu Jan 21 20:13:58 UTC 2016 armv7l GNU/Linux I tried to create uEnv.txt file in /boot/uboot/ whith the string cape_enable=capemgr.enable_partno=BB-UART1,BB-UART2. Tried to append to /etc/default/capemgr CAPE=BB-UART1, UART2. But nothing worked out. Maybe there is a problem with pin configuration? And what mean /dev/ttyO0 -> ttyS0? Thanks. -- 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/a9cc4bd6-79af-42a9-8896-960fa5f2d949%40googlegroups.com.
