Beaglebone Blue UART problems

[Pierce Nichols]

All,

I just created a new SD card for my Beaglebone Blue using the latest
image... and now the UARTs don't work. I confirmed that it's not
hardware by switching back to the old one and confirming that they
still work. I can't access them either on /dev/ttyO* or on /dev/ttyS*.
The old card has the full GUI installed while the new one is an IoT
image.

The /opt/scripts/tools/version.sh output for the new SD card:

git:/opt/scripts/:[d16ec8fd0409933b1251c1c571b787477fafb0d4]
eeprom:[A335BNLTBLA21717EL001089]
model:[TI_AM335x_BeagleBone_Blue]
dogtag:[BeagleBoard.org Debian Image 2018-08-23]
bootloader:[microSD-(push-button)]:[/dev/mmcblk0]:[U-Boot
2018.03-00002-gac9cce7c6a]:[location: dd MBR]
kernel:[4.14.65-ti-r72]
nodejs:[v6.14.4]
uboot_overlay_options:[enable_uboot_overlays=1]
uboot_overlay_options:[uboot_overlay_pru=/lib/firmware/AM335X-PRU-RPROC-4-14-TI-00A0.dtbo]
uboot_overlay_options:[enable_uboot_cape_universal=1]
pkg check: to individually upgrade run: [sudo apt install --only-upgrade <pkg>]
pkg:[bb-cape-overlays]:[4.4.20180914.0-0rcnee0~stretch+20180914]
pkg:[bb-wl18xx-firmware]:[1.20180517-0rcnee0~stretch+20180517]
pkg:[kmod]:[23-2rcnee1~stretch+20171005]
pkg:[librobotcontrol]:[1.0.2-git20180829.0-0rcnee0~stretch+20180830]
pkg:[firmware-ti-connectivity]:[20170823-1rcnee1~stretch+20180328]
groups:[debian : debian adm kmem dialout cdrom floppy audio dip video
plugdev users systemd-journal i2c bluetooth netdev cloud9ide gpio pwm
eqep admin spi tisdk weston-launch xenomai]
cmdline:[console=ttyO0,115200n8 bone_capemgr.uboot_capemgr_enabled=1
root=/dev/mmcblk0p1 ro rootfstype=ext4 rootwait coherent_pool=1M
net.ifnames=0 quiet]
dmesg | grep pinctrl-single
[ 1.049466] pinctrl-single 44e10800.pinmux: 142 pins at pa f9e10800 size 568
dmesg | grep gpio-of-helper

And for the old:

git:/opt/scripts/:[2ce750d881941c5189db9e189af90517e11c079f]
eeprom:[A335BNLTBLA21717EL001089]
dogtag:[BeagleBoard.org Debian Image 2017-08-31]
bootloader:[microSD-(push-button)]:[/dev/mmcblk0]:[U-Boot
2017.09-rc2-00002-g7c9353]
kernel:[4.9.45-ti-r57]
nodejs:[v6.14.4]
uboot_overlay_options:[enable_uboot_overlays=1]
uboot_overlay_options:[uboot_overlay_pru=/lib/firmware/AM335X-PRU-UIO-00A0.dtbo]
uboot_overlay_options:[enable_uboot_cape_universal=1]
pkg:[bb-cape-overlays]:[4.4.20180914.0-0rcnee0~stretch+20180914]
pkg:[bb-wl18xx-firmware]:[1.20180517-0rcnee0~stretch+20180517]
pkg:[firmware-ti-connectivity]:[20170823-1rcnee1~stretch+20180328]

So... wtf is going on here?

-p

--
Pierce Nichols
Principal Engineer
Logos Electromechanical, LLC