Re: [Outreachy kernel] IIO Experiment #1 Build Dummy Help

[Eva Rachel Retuya <eraretuya@gmail.com>]

On Sun, Oct 16, 2016 at 02:23:58PM -0700, Elizabeth Ferdman wrote:
> On Sun, Oct 16, 2016 at 10:04:27AM +0800, Eva Rachel Retuya wrote:
> > Hi Liz,
> > 
> > On Sat, Oct 15, 2016 at 02:07:49PM -0700, Elizabeth Ferdman wrote:
> > ----massive snip----
> > > I think that running $ make -j2 && sudo make modules_install could solve
> > > this problem? If I can't do insmod can I just do modprobe?
> > > 
> > 
> > modprobe is OK to use.
> > 
> Thanks, I used modprobe and the modules were loaded.
> 
> I'm running into this issue in Task 01
> When I do 'ls -l /config/iio/devices/dummy/' the terminal just hangs. I
> closed the terminal and tried it a few more times but it was just
> freezing and I had to xkill it. I have been following the tutorial. I
> mounted the configfs at /config, made the modules, loaded them, ran
> mkdir /config/iio/devices/dummy/my_dummy_device.
> 

Hi,

I suggest to do 'make clean' again and start from scratch.
Run 'make menuconfig' and make sure the settings look like this:
{*} Industrial I/O support ---> (instead of module, make this built-in,
use 'y' instead of 'm')
<Descend this option where you'll configure configfs, dummy, etc>
{*} Enable IIO configuration via configfs (use 'y' instead of 'm')
<M> Enable software IIO device support
<M> Enable software triggers support

Under IIO dummy driver:
<M> An example driver with no hardware requirements
[*] Event generation support
[*] Buffered capture support

Compile and install, then boot to that kernel and test if it works.

Eva
> These succeeded:
> lsmod | grep dummy 
> ls -l /sys/bus/iio/devices/iio:device0/
> ls -l /sys/bus/iio/devices/iio_evgen/
> 
> The one that's no working is 
> ls -l /config/iio/devices/dummy/my_dummy_device
> or 
> ls -l /config/iio/devices/dummy/
> 
> Liz
> 
> > Eva
> > 
> > > Thanks,
> > > Liz
> > > 
> > > > thanks,
> > > > Daniel.
> > > 
> > > -- 
> > > You received this message because you are subscribed to the Google Groups "outreachy-kernel" group.
> > > To unsubscribe from this group and stop receiving emails from it, send an email to outreachy-kernel+unsubscribe@googlegroups.com.
> > > To post to this group, send email to outreachy-kernel@googlegroups.com.
> > > To view this discussion on the web visit https://groups.google.com/d/msgid/outreachy-kernel/20161015210748.GA13776%40localhost.
> > > For more options, visit https://groups.google.com/d/optout.