want to add pin status sudo cat ./debug/pinctrl/4a003400.pinmux/pins I put mode 4 on *.dts file but the value looks like 0c instead 04. ... pin 203 (PIN203) 4a00372c 000c0000 pinctrl-single pin 204 (PIN204) 4a003730 000c0000 pinctrl-singl ...
And also I used to config-pin and got the following information. I think this config-pin tool is out of date because it showed as uart4 instead of uart5. do you know if config-pin can be used Beaglebone AI too? debian@beaglebone:/sys/kernel$ config-pin -l P9.11 default gpio gpio_pu gpio_pd gpio_input uart debian@beaglebone:/sys/kernel$ config-pin -i P9.11 Pin name: P9_11 Function if no cape loaded: gpio Function if cape loaded: default gpio gpio_pu gpio_pd gpio_input uart Function information: gpio0_30 default gpio0_30 gpio0_30 gpio0_30 gpio0_30 uart4_rxd Kernel GPIO id: 30 PRU GPIO id: 62 debian@beaglebone:/sys/kernel$ config-pin -q P9.11 P9_11 pinmux file not found! Pin has no cape: P9_11 On Thursday, April 2, 2020 at 4:03:21 PM UTC-6, Insuk Ahn wrote: > > Hello. > > I am wondering if some one can access UART on Beaglebone AI. I updated > *.dts file so I think I got /dev/ttyS1, ttyS2, ttyS3, ttyS4 and ttyS5 on my > kernel. > > *debian@beaglebone:/dev$ ls -al ttyS** > crw------- 1 debian tty 4, 64 Mar 13 01:04 ttyS0 > crw-rw---- 1 root dialout 4, 65 Mar 12 22:23 ttyS1 > crw-rw---- 1 root dialout 4, 66 Mar 12 22:23 ttyS2 > crw-rw---- 1 root dialout 4, 67 Mar 12 22:23 ttyS3 > crw-rw---- 1 root dialout 4, 68 Mar 12 22:23 ttyS4 > crw-rw---- 1 root dialout 4, 69 Mar 12 22:23 ttyS5 > > *debian@beaglebone:/dev$ dmesg | grep tty* > [ 0.000000] Kernel command line: console=ttyS0,115200n8 > root=/dev/mmcblk1p1 ro rootfstype=ext4 rootwait coherent_pool=1M > net.ifnames=0 rng_core.default_quality=100 quiet > [ 0.931970] console [ttyS0] disabled > [ 0.932020] 4806a000.serial: ttyS0 at MMIO 0x4806a000 (irq = 43, > base_baud = 3000000) is a 8250 > [ 1.018956] console [ttyS0] enabled > [ 1.019768] 48020000.serial: ttyS2 at MMIO 0x48020000 (irq = 44, > base_baud = 3000000) is a 8250 > [ 1.020527] 48066000.serial: ttyS4 at MMIO 0x48066000 (irq = 45, > base_baud = 3000000) is a 8250 > [ 1.021268] 48068000.serial: ttyS5 at MMIO 0x48068000 (irq = 46, > base_baud = 3000000) is a 8250 > [ 1.021996] 48422000.serial: ttyS1 at MMIO 0x48422000 (irq = 47, > base_baud = 3000000) is a 8250 > [ 1.022744] 4ae2b000.serial: ttyS3 at MMIO 0x4ae2b000 (irq = 48, > base_baud = 3000000) is a 8250 > > > I assume the 48066000.serial: ttyS4 at MMIO 0x48066000 is UART5 based on > TI system reference. > So I tried to get signals on P9.11 and P9.13(schematic of BeagleBon AI > AM57x page 14 of 19) on Beaglebone AI extension header by the following > commands. > > * debian@beaglebone:/dev$ echo 12345 > /dev/ttyS4* > > When I check signal via software scope, I can not get any signal change on > the pins. > Do I need to activate the UART5 ( or /dev/ttyS4 on my dev structure ) > before checking? If yes, how can I do to activate it? > Thank you so much! > > > -- 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/d3f511df-4187-41c6-a5ec-458eeee5b42b%40googlegroups.com.
