I suggest updating to a new version of the SD card. It looks like the PRUs are getting started at boot time, but the path isn't setup right. I think we setup some links so the path* /dev/remoteproc/pruss-core0/state *points to the right place.
You could also try: *cd */var/lib/cloud9 *git* pull to update cloud9 folders. --Mark On Wednesday, February 17, 2021 at 1:53:35 PM UTC-5 [email protected] wrote: > Mark, > > I got the latest PRUCookbook downloaded and when trying to make the > hello.pru0.c program in 1.6, I got this error. > > *debian@beaglebone:/var/lib/cloud9/PRUCookbook/docs/02start/code$ make > TARGET=hello.pru0* > */var/lib/cloud9/common/Makefile:29: > MODEL=TI_AM335x_BeagleBone_Black,TARGET=hello.pru0* > *- Stopping PRU 0* > */bin/sh: 1: cannot create /dev/remoteproc/pruss-core0/state: Directory > nonexistent* > *Cannot stop 0* > *CC hello.pru0.c* > *"/var/lib/cloud9/common/prugpio.h", line 53: warning #1181-D: #warning > directive: "Found am335x"* > *LD /tmp/cloud9-examples/hello.pru0.o* > *- copying firmware file /tmp/cloud9-examples/hello.pru0.out to > /lib/firmware/am335x-pru0-fw* > *cp: cannot create regular file '/lib/firmware/am335x-pru0-fw': Permission > denied* > */var/lib/cloud9/common/Makefile:180: recipe for target 'install' failed* > *make: *** [install] Error 1* > *rm /tmp/cloud9-examples/hello.pru0.o* > > Initially, I did not have a folder called /var/lib/cloud9/common. To > remedy this I copied the contents of > /var/lib/cloud9/PRUCookbook/docs/common to /var/lib/cloud9/common. Maybe > this created a problem?Nevertheless, I found some other discussions that > suggested updating the scripts and kernels from beagleboard.org/upgrade > which I did. I am now running... > > Linux beaglebone 4.14.108-ti-r137 #1stretch SMP PREEMPT Tue Aug 25 > 01:48:39 UTC 2020 armv7l GNU/Linux > > And the output of version.sh is > > *debian@beaglebone:/$ sudo opt/scripts/tools/version.sh* > *[sudo] password for debian:* > *git:/opt/scripts/:[e4e4854ef8ff9ada5c85553376043ee7679167ca]* > *eeprom:[A335BNLT00C04417BBBK1847]* > *model:[TI_AM335x_BeagleBone_Black]* > *dogtag:[BeagleBoard.org Debian Image 2018-10-07]* > *bootloader:[microSD-(push-button)]:[/dev/mmcblk0]:[U-Boot SPL > 2018.09-00002-g0b54a51eee (Sep 10 2018 - 19:41:39 -0500)]:[location: dd > MBR]* > *bootloader:[microSD-(push-button)]:[/dev/mmcblk0]:[U-Boot > 2018.09-00002-g0b54a51eee]:[location: dd MBR]* > *bootloader:[eMMC-(default)]:[/dev/mmcblk1]:[U-Boot SPL > 2018.03-00002-gac9cce7c6a (Apr 05 2018 - 13:07:46 -0500)]:[location: dd > MBR]* > *bootloader:[eMMC-(default)]:[/dev/mmcblk1]:[U-Boot > 2018.03-00002-gac9cce7c6a]:[location: dd MBR]* > *UBOOT: Booted Device-Tree:[am335x-boneblack-uboot-univ.dts]* > *kernel:[4.14.108-ti-r137]* > *nodejs:[v6.14.4]* > */boot/uEnv.txt Settings:* > *uboot_overlay_options:[enable_uboot_overlays=1]* > > *uboot_overlay_options:[uboot_overlay_addr0=/lib/firmware/BB-W1-P9.12-00A0.dtbo]* > *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-customizations]:[1.20180815-0rcnee0~stretch+20180815]* > *WARNING:pkg:[bb-usb-gadgets]:[NOT_INSTALLED]* > *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/mmcblk0p1 ro rootfstype=ext4 rootwait coherent_pool=1M > net.ifnames=0 quiet]* > *dmesg | grep remote* > *[ 1.147260] remoteproc remoteproc0: wkup_m3 is available* > *[ 1.231303] remoteproc remoteproc0: powering up wkup_m3* > *[ 1.231426] remoteproc remoteproc0: Booting fw image > am335x-pm-firmware.elf, size 217168* > *[ 1.233981] remoteproc remoteproc0: remote processor wkup_m3 is now up* > *[ 108.634522] remoteproc remoteproc1: 4a334000.pru is available* > *[ 108.656634] remoteproc remoteproc2: 4a338000.pru is available* > *dmesg | grep pru* > *[ 108.019424] pruss 4a300000.pruss: creating PRU cores and other child > platform devices* > *[ 108.634522] remoteproc remoteproc1: 4a334000.pru is available* > *[ 108.634642] pru-rproc 4a334000.pru: PRU rproc node > /ocp/pruss_soc_bus@4a326004/pruss@0/pru@34000 probed successfully* > *[ 108.656634] remoteproc remoteproc2: 4a338000.pru is available* > *[ 108.656808] pru-rproc 4a338000.pru: PRU rproc node > /ocp/pruss_soc_bus@4a326004/pruss@0/pru@38000 probed successfully* > *dmesg | grep pinctrl-single* > *[ 0.783913] pinctrl-single 44e10800.pinmux: 142 pins at pa f9e10800 > size 568* > *dmesg | grep gpio-of-helper* > *[ 0.796624] gpio-of-helper ocp:cape-universal: ready* > *lsusb* > *Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub* > *END* > > Any ideas? > > On Wednesday, February 17, 2021 at 10:10:53 AM UTC-5 Mark A. Yoder wrote: > >> The PRUs can give you 10's of ns timing, which is more than good enough >> for milliseconds, but might be over kill. >> >> I'd think using C on the ARM processor should be fast enough. I'd use >> gpiod[1]. >> >> If you really want the ns timing of the PRUs, check out the PRU >> Cookbook[2] >> >> --Mark >> >> [1] https://github.com/starnight/libgpiod-example >> [2] https://github.com/MarkAYoder/PRUCookbook >> >> On Tuesday, February 16, 2021 at 10:51:11 AM UTC-5 [email protected] >> wrote: >> >>> Depending on how precise you need to be, I would go for the PRU-ICSS. >>> They can control the GPIOs pretty easily. >>> >>> Le mardi 16 février 2021 à 10:03:47 UTC-5, [email protected] a >>> écrit : >>> >>>> I have a BBB Wireless running Linux beaglebone 4.14.108-ti-r106 #1 SMP >>>> PREEMPT Fri May 24 22:12:34 UTC 2019 armv7l GNU/Linux >>>> >>>> I am writing in C. >>>> >>>> I turn a valve on and then need to read some sensors for N milliseconds >>>> and then turn the valve off. >>>> >>>> What's the best way to read milliseconds on the BBBw? I don't have a >>>> RTC on this particular unit but could add one using I2C. I have an >>>> Adafruit 4282 with a DS3231 RTC on it on another BBBw that I could use >>>> temporarily to prove it works. What other options are available? >>>> >>>> >>>> -- 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/d21960fc-c959-4d86-9847-8fd8e5fdf010n%40googlegroups.com.
