Hi Geert, On Tuesday, November 13, 2018, Geert Uytterhoeven wrote: > > It makes the files show up under /sys look nice. > > > > For example, P5_6 is button SW4: > > > > $ echo 912 > /sys/class/gpio/export > > > > Then you end up with "/sys/class/gpio/P5_6/" > > > > $ echo in > /sys/class/gpio/P5_6/direction > > $ cat /sys/class/gpio/P5_6/direction > > $ cat /sys/class/gpio/P5_6/value > > (Ah, the legacy and deprecated sysfs GPIO interface, being replaced > by /dev/gpiochip[0-9]+ and https://github.com/brgl/libgpiod) > > Cool, I didn't know that. > But you still need to know which number to write to the export file > in the first place?
True, meaning the table does not help you as much as you want. Jacopo also mentioned the new libgpiod. So, I think I might just drop this table in the next revision. What I really want to do is just say "make P5_6 an input" and not have to convert to a global ID number. But, I'm not sure how libgpiod is going to know what "P5_6" is. > > > Some people prefer "reverse Xmas tree ordering" i.e. sorted by > decreasing > > > declaration length. > > > > https://lwn.net/Articles/758552/ > > > > "only a few maintainers insist on that, while most really do not care or > > think that it's actively silly." > > > > So are you one of those maintainers????? :) > > Sorry, got baptised by Laurent... (insert picture of Laurent handing out Kool-Aid here) Chris
