Thank you much for the response. I picked up Derek Molloy's 2nd edition and it's getting me straightened out.
I'll play with the techlab again soon and will double check working through your suggestions. I had been working through RCN's instruction on the wiki. I did read through the presentation slides for the workshop and read through the info on e-ALE linked from the techlab cape page on beagleboard. I don't think I have the minimum requisite skills yet for that level of instruction. Very weak on coding. Here's to ChE's learning EE-CS skills. Again, thank you. Best Regards, Patrick On Monday, June 10, 2019 at 12:52:55 PM UTC-7, Jason Kridner wrote: > > Sorry for my delay in noticing this post. I hope you will read my below > replies and see if it provides you with some success. > > On Wednesday, May 15, 2019 at 8:41:06 AM UTC-5, P B wrote: >> >> Good morning, >> >> For the past two months I've been trying to learn how to use the BBB & PB >> using Derek Molloy's book. >> >> I got pretty excited just being able to light a led and read a push >> button at the beginning of chapter 6. >> >> But I've gotten stuck in chapter 6 where he introduces device-tree >> overlays because it seems those have been done away with in favor of uboot >> overlays. It appears both of these are compiled the same way, but I've let >> myself get confused. >> >> I found his updated video on gpio's but that also appears obsolete. >> >> As a result I switched to trying to use the Pocketbeagle techcape to get >> unstuck, but I've been fighting with learning how to control pins and even >> work through the basic confirmation of functions. >> >> I've tried loading the images from both techlab-workshop-2019-01-24 >> & bone-debian-buster-iot-armhf-2019-03-03-4gb. >> >> I've been updating the kernel to Linux beaglebone 4.19.37-bone32 >> #1stretch PREEMPT Tue Apr 30 19:17:06 UTC 2019 armv7l GNU/Linux. >> >> Afterwards I apt-get update, apt-get upgrade, git clone bb.org-overlays >> from RCN, and download the latest cloud9 examples from J Krider. >> > > In my examples at > https://github.com/beagleboard/cloud9-examples/tree/master/PocketBeagle/TechLab > > I suggest enabling a number of overlays via /boot/uEnv.txt via: > > sudo sed -i -e > "s/#?uboot_overlay_addr0=.*$/uboot_overlay_addr0=\/lib\/firmware\/PB-I2C2-ACCEL-TECHLAB-CAPE.dtbo/;" > /boot/uEnv.txt > sudo sed -i -e > "s/#?uboot_overlay_addr1=.*$/uboot_overlay_addr1=\/lib\/firmware\/PB-PWM-RGB-TECHLAB-CAPE.dtbo/;" > /boot/uEnv.txt > sudo sed -i -e > "s/#?uboot_overlay_addr2=.*$/uboot_overlay_addr2=\/lib\/firmware\/PB-SPI1-7SEG-TECHLAB-CAPE.dtbo/;" > /boot/uEnv.txt > sudo sed -i -e > "s/#?uboot_overlay_pru=.*RPROC.*$/uboot_overlay_pru=\/lib\/firmware\/AM335X-PRU-RPROC-4-14-TI-00A0.dtbo/;" > /boot/uEnv.txt > sudo shutdown -r now > > > > Enabling the PB-PWM-RGB-TECHLAB-CAPE overlay should add 3 LEDs after the > reboot is complete, techlab::red, techlab::green and techlab::blue. > > See > https://github.com/beagleboard/bb.org-overlays/blob/master/src/arm/PB-PWM-RGB-TECHLAB-CAPE.dts > for > the content of the overlay. > > Enabling the PB-SPI1-7SEG-TECHLAB-CAPE overlay should enable 16 more > LEDs, techlab::seg*, where * is 0-15. > > See > https://github.com/beagleboard/bb.org-overlays/blob/master/src/arm/PB-SPI1-7SEG-TECHLAB-CAPE.dts > for > the content of the overlay. > > Doing a "dmesg > /var/lib/cloud9/dmesg.txt" and then copy-and-paste the > contents of dmesg.txt here. Also, provide a copy-and-paste of > /boot/uEnv.txt as well as the output of `sudo > /opt/scripts/tools/version.sh`. These will help in providing feedback on > steps you might not be executing as intended. > > >> Unfortunate, for all of these methods the only led files are as listed in >> the posted screen shot. >> >> beaglebone:green:usr0 >> beaglebone:green:usr1 >> beaglebone:green:usr2 >> beaglebone:green:usr3 >> >> No segment 7 files and no rgb files to use. >> >> Maybe I'm just confused, but have been stuck here for a couple of weeks & >> have just been going back & forth between fighting the PB & BBB on the next >> steps. >> > > Really sorry to hear you've been stuck for so long. If the responses here > don't get you going, be sure to reach out to me under the instructions at > https://beagleboard.org/support. I'm also 'jkridner' on the #beagle IRC > channel. > > >> >> I've searched the net extensively looking for additional resources but >> just end up working in circles. >> >> Does anyone have any tips or any recommendations for learning resources >> to get over this hurdle? >> > > Have you tried watching the e-ALE videos? They can be a bit advanced, but, > if you are patient, you might pick up the missing piece to the puzzle. > > >> >> Thank you in advance for any assistance. >> >> Best Regards, >> >> Patrick >> > -- 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/67dfea7d-03c2-457e-9c31-7aedd5ff8dbf%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
