Hi,
I’ve installed debian + kernal 4.19-ti-rt on my BBB according to this instruction: https://www.digikey.com/eewiki/display/linuxonarm/BeagleBone+Black
After I finally started the system I’m trying now to change pins roles to start using PRU. When I change /boot/uEnv.txt file to enable overlays and select which one to use, it doesn’t seem to work at all - after reboot pins’ roles remain default, no PRU pins enabled. What am I doing wrong?
/opt/scripts/tools/version.sh
`
git:/opt/scripts/:[15198b3b7ff40ef517a305eeb7cd20e57f18d37a]
eeprom:[A335BNLTEIA05115BBBK0079]
model:[TI_AM335x_BeagleBone_Black]
bootloader:[eMMC-(default)]:[/dev/mmcblk1]:[U-Boot 2019.04-dirty]:[location: dd MBR]
kernel:[4.19.31-ti-rt-r19]
uboot_overlay_options:[enable_uboot_overlays=1]
uboot_overlay_options:[disable_uboot_overlay_video=1]
uboot_overlay_options:[uboot_overlay_pru=/lib/firmware/AM335X-PRU-RPROC-4-19-TI-00A0.dtbo]
pkg check: to individually upgrade run: [sudo apt install --only-upgrade ]
pkg:[bb-cape-overlays]:[4.4.20190610.0-0rcnee0~stretch+20190610]
WARNING:pkg:[bb-wl18xx-firmware]:[NOT_INSTALLED]
pkg:[kmod]:[23-2rcnee1~stretch+20171005]
WARNING:pkg:[librobotcontrol]:[NOT_INSTALLED]
pkg:[firmware-ti-connectivity]:[20180825+dfsg-1rcnee1~stretch+20181217]
groups:[debian : debian adm kmem dialout cdrom floppy audio dip video plugdev users systemd-journal i2c netdev gpio pwm eqep bluetooth admin spi tisdk weston-launch xenomai cloud9ide]
cmdline:[console=ttyO0,115200n8 root=UUID=702af096-c19d-4ce1-ac79-0ad255340345 ro rootfstype=ext4 rootwait]
dmesg | grep remote
[ 2.715739] remoteproc remoteproc0: wkup_m3 is available
[ 2.717172] remoteproc remoteproc1: 4a334000.pru is available
[ 2.717809] remoteproc remoteproc2: 4a338000.pru is available
[ 3.051770] remoteproc remoteproc0: powering up wkup_m3
[ 3.109595] remoteproc remoteproc0: Booting fw image am335x-pm-firmware.elf, size 217168
[ 3.122818] remoteproc remoteproc0: remote processor wkup_m3 is now up
dmesg | grep pru
[ 2.717172] remoteproc remoteproc1: 4a334000.pru is available
[ 2.717362] pru-rproc 4a334000.pru: PRU rproc node pru@4a334000 probed successfully
[ 2.717809] remoteproc remoteproc2: 4a338000.pru is available
[ 2.718000] pru-rproc 4a338000.pru: PRU rproc node pru@4a338000 probed successfully
dmesg | grep pinctrl-single
[ 1.229997] pinctrl-single 44e10800.pinmux: 142 pins, size 568
dmesg | grep gpio-of-helper
[ 1.232540] gpio-of-helper ocp:cape-universal: ready
lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
END
`
`
/boot/uEnv.txt
uname_r=4.19.31-ti-rt-r19
uuid=702af096-c19d-4ce1-ac79-0ad255340345
enable_uboot_overlays=1
disable_uboot_overlay_video=1
uboot_overlay_pru=/lib/firmware/AM335X-PRU-RPROC-4-19-TI-00A0.dtbo
`
Cheers