> On Jan 9, 2017, at 6:49 AM, Mrigendra Chaubey <[email protected]> > wrote: > > Hi all, > > I am a newbie and following a number of forums to learn kernel programming > such as drivers, pin multilexing without using overlays or device tree > because I was comfortable with the previous kernel. Kernel version is 3.8. > > Well the small problem I am having is > > I am using extra folder of derek molly's exploringBB repo. I tried to compile > gpio_test.c file as a module in bbb kernel in drivers/gpio folder. > > 1) If I insmod this driver from home such as > > root@beaglebone:~# insmod gpio_test.ko > insmod: can't insert 'gpio_test.ko': No such file or directory Why not use modprobe to install module: modprobe gpio_test
To remove module: modprobe -r gpio_test Regards, John > > I get this error. So I have to go the particular directory > cd /lib/modules/3.8.13-00770-g97d16ab-dirty/kernel/drivers/gpio and then do > the insmod. > Why I can't load from home? > > 2)I am not getting log messages for this command > tail -f kern.log > ta > tail: can't open 'kern.log': No such file or directory > tail: no files > why? > > > > > -- > For more options, visit http://beagleboard.org/discuss > <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] > <mailto:[email protected]>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/48fb025e-7f8c-4e0a-9616-a566fa253fc8%40googlegroups.com > > <https://groups.google.com/d/msgid/beagleboard/48fb025e-7f8c-4e0a-9616-a566fa253fc8%40googlegroups.com?utm_medium=email&utm_source=footer>. > For more options, visit https://groups.google.com/d/optout > <https://groups.google.com/d/optout>. -- 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/021C10CF-F728-450A-B5A6-3C3F40DADB5B%40gmail.com. For more options, visit https://groups.google.com/d/optout.
