Ok, as usual, after one day searching around, I found the solution 2 minutes later I wrote the post.
Here the solution: https://github.com/pehrtree/beaglebone_snippets/tree/master/power Alberto Il giorno giovedì 31 luglio 2014 11:02:03 UTC+2, Alberto Potenza ha scritto: > > Dear all, > > I would like to see if my Beaglebone black is powered by USB cable or by > an external power supply. > To do that I would like to read the "Status register " of the TPS65217C. > It should be done by using the I2C0. As far as I have understood, it > cannot be done by userspace by using <linux/i2c-dev.h> and open it by > /dev/i2c-0. > > I tried both > i2cget 0 0x24 0x0A > i2cget -y 0 0x24 0x0A > > but I obtain always: "Device or resource busy". > > Is there a way to check what is written in the status register? > Or is there another way to check how the Beaglebone black is powered? > > Thanks. > > Alberto > > FYI: > > root@arm:/dev# uname -a > Linux arm 3.8.13-bone28 #1 SMP Thu Sep 12 23:22:35 UTC 2013 armv7l > GNU/Linux > -- 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]. For more options, visit https://groups.google.com/d/optout.
