On Sunday, June 2, 2019 at 3:03:13 AM UTC+2, RobertCNelson wrote: > On Sat, Jun 1, 2019 at 6:05 PM <[email protected]> wrote: > > > > Hello folks, > > > > I am trying to optimize the boot time of my system with Waveshare CAN cape. > > > > I got CAN1 (P24,P26) working by setting in uEnv.txt: > > > > uboot_overlay_addr0=/lib/firmware/BB-CAN1-00A0.dtbo > > > > It is also possible to use config-pin (I later noticed that this is a > > feature of cape-universal) to enable CAN1 as explained in this link: > > https://www.thomas-wedemeyer.de/beaglebone-canbus-python.html > > > > While trying to reduce boot time, I realized that disabling cape-universal > > significantly reduces boot time. However when I disable it, CAN bus stops > > working and I get the following error when trying to enable it: > > > > debian@beaglebone:~$ sudo ip link set can1 up type can bitrate 500000 > > Cannot find device "can1" > > > > Is it possible to use the CAN interface without cape-universal? How can I > > avoid unneeded hardware initialization to reduce boot time? > > start over with a fresh image: > > https://rcn-ee.net/rootfs/bb.org/testing/2019-05-27/stretch-iot/ > > There has been a lot of boot-time optimization all over the image.. > and you didn't state which one you are running? > > Regards, > > -- > Robert Nelson > https://rcn-ee.com/
Hello Robert, Is there a place that we can track the changes made to the image? I already have configured my image and starting with a new image would take a long time. I still do not understand why disabling cape-universal affects the operation of can1 overlay.. why do we have to wait hardware initialization that we wont use at all? Thanks Bora -- 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/cb6a1aeb-630d-46fe-858b-712842186c0b%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
