On Tue, Jan 22, 2019 at 11:33:18PM +0530, Bharath Vedartham wrote: > Hey everyone, > > I am trying to get started with the IIO subsystem by doing the following tasks: > > https://kernelnewbies.org/IIO_tasks > > In task 3, which requires us to add 3 channels to the dummy_device, I > have added the structures in the dummy_channels array(which is of type > struct chan_spec), similar to the other channels in the dummy_channels > array.(in file drivers/iio/dummy/iio_simple_dummy.c) > > I also added elements to the enum iio_simple_dummy_scan_elements for the > scan_index val.(in iio_simple_dummy.h) > > I recompiled the kernel and loaded the modules iio_dummy and > iio_dummy_evgen using modprobe. > > is the right approach. I am not able to see any new channels being > added to my /sys/bus/iio/devices/iio:device0/ directory? Did you followed the configfs setup as illustrated in the aforementioned link ? Did the modules got loaded correctly ? And if you're doing Task 3, I'd assume that the previous tasks were done correctly ? > printk is not printing to dmesg. I put printk in the probe function Without any logs or diffs, it's hard to predict about where exactly you're doing wrong. Btw, we do have a IIO mailing list as well: linux-iio@xxxxxxxxxxxxxxx -- Himanshu Jha Undergraduate Student Department of Electronics & Communication Guru Tegh Bahadur Institute of Technology _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
