My experience is that the echo only works if you are logged on as root. it never worked with sudo for me. I found uEnv.txt at /boot/uEnv.txt
For fear of opening a "can of worms", the numbering of the three I2C buses is, for lack of a better term, illogical. From the aspect of an engineer, programmer or human -- especially someone new to BB and/or to embedded systems. http://beaglebone.cameon.net/home/i2c-devices debian@beaglebone:/$ ls /sys/class/i2c-dev/ -ltotal 0 lrwxrwxrwx 1 root root 0 Mar 3 19:03 i2c-0 -> ../../devices/ocp.3/44e0b000.i2c/i2c-0/i2c-dev/i2c-0 lrwxrwxrwx 1 root root 0 Mar 3 19:03 i2c-1 -> ../../devices/ocp.3/4819c000.i2c/i2c-1/i2c-dev/i2c-1 lrwxrwxrwx 1 root root 0 Mar 3 19:03 i2c-2 -> ../../devices/ocp.3/4802a000.i2c/i2c-2/i2c-dev/i2c-2 so: i2c-0 is hardware bus 0 i2c-1 is hardware bus 2 i2c-2 is hardware bus 1 Both having to find and edit uEnv.txt and then having to deal with the mixed up numbering just doesn't make any sense to me... There you have it, my bias. -- 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 beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
