Hello.
I need help regarding PRU.
I tried to enable the PRU by a command below.
*root@beaglebone:/sys/class/remoteproc/remoteproc1# echo 'start' > state
*
-bash: echo: write error: No such file or directory
But I get above result and PRU does not start.
I also tried sudo sh -c "echo 'start' > state" but I got an I/O error.
Please help me.
Below are related information.
*debian@beaglebone:~$ dmesg |grep pru*
[ 82.512558] pruss 4a300000.pruss: creating PRU cores and other child
platform devices
[ 82.531307] remoteproc remoteproc1: 4a334000.pru is available
[ 82.531436] pru-rproc 4a334000.pru: PRU rproc node
/ocp/pruss_soc_bus@4a326004/pruss@0/pru@34000 probed successfully
[ 82.539513] remoteproc remoteproc2: 4a338000.pru is available
[ 82.539647] pru-rproc 4a338000.pru: PRU rproc node
/ocp/pruss_soc_bus@4a32600
[ 1864.134156] remoteproc remoteproc1: powering up 4a334000.pru
[ 1864.134336] remoteproc remoteproc1: Direct firmware load for
am335x-pru0-fw failed with error -2
*root@beaglebone:/sys/class/remoteproc/remoteproc1# sudo
/opt/scripts/tools/version.sh*
git:/opt/scripts/:[1aa73453b2c980b75e31e83dab7dd8b6696f10c7]
eeprom:[A335BNLTBWA51712EW004500]
model:[TI_AM335x_BeagleBone_Black_Wireless]
dogtag:[BeagleBoard.org Debian Image 2018-10-07]
bootloader:[eMMC-(default)]:[/dev/mmcblk1]:[U-Boot
2018.09-00002-g0b54a51eee]:[location: dd MBR]
kernel:[4.14.71-ti-r80]
nodejs:[v6.14.4]
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-4-14-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]:[4.4.20180928.0-0rcnee0~stretch+20180928]
pkg:[bb-wl18xx-firmware]:[1.20180517-0rcnee0~stretch+20180517]
pkg:[kmod]:[23-2rcnee1~stretch+20171005]
pkg:[librobotcontrol]:[1.0.3-git20181005.0-0rcnee0~stretch+20181005]
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/mmcblk1p1 ro rootfstype=ext4 rootwait coherent_pool=1M
net.ifnames=0 quiet]
dmesg | grep pinctrl-single
[ 1.115968] pinctrl-single 44e10800.pinmux: 142 pins at pa f9e10800 size
568
dmesg | grep gpio-of-helper
[ 1.127852] gpio-of-helper ocp:cape-universal: ready
END
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