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  • in reply to: Tricolor LEDs – how to? #50439
    technosf
    Participant

    With more exploration… from userspace:

    echo 30 > /sys/class/leds/red:led1/brightness
    echo 30 > /sys/class/leds/green:led2/brightness
    echo 30 > /sys/class/leds/blue:led3/brightness

    etc.

    in reply to: Tricolor LEDs – how to? #50437
    technosf
    Participant

    The LEDs are hooked up using i2c to a driver chip – a is31fl319x which has a corresponding userspace driver leds_is31fl319x
    The is31fl319x is located on i2c bus 1 at 0x64, and on ArchLinux, the driver module leds_is31fl319x loads at boot. If you run i2cdetect -y 1 you see that 0x64 has the value UU, indicating that the driver is controlling that address. lsmod confirms this.

    If you want to control the LEDs you can write code to talk to the driver.

    Alternately you can remove the driver (rmmod leds_is31fl319x), which will allow access to 0x64, and you can use i2c (i2ctransfer) to send instructions to the is31fl319x directly.

    For example:

    i2ctransfer -y 1 w76@0x64 0x00 0x01 0x01 0x77 0x21 0x07 0x03 0x00 0x04 0x00 0x07 0xff 0x08 0xff 0x09 0xff 0x0a 0xff 0x0b 0xff 0x0c 0xff 0x0d 0xff 0x0e 0xff 0x0f 0xff 0x10 0x00 0x11 0x00 0x12 0x01 0x13 0x02 0x14 0x05 0x15 0x04 0x16 0x03 0x17 0x06 0x18 0x07 0x19 0x09 0x1a 0xa0 0x1b 0xa0 0x1c 0xa0 0x1d 0x07 0x1e 0x07 0x1f 0x07 0x20 0x07 0x21 0x07 0x22 0x07 0x23 0x07 0x24 0x07 0x25 0x07 0x26 0x00 0x03 0x70

    in reply to: WAN port config in Linux #50436
    technosf
    Participant

    Answering my own question – I am using systemd-networkd, and it is really picky 😉
    Once you nail down the config, its fine.

    in reply to: Opening the case #50391
    technosf
    Participant

    To answer my own question: After removing the inset black screws, I lightly attached two of the smaller silver screws to the base and used those to pull the base while holding the plastic case steady. The base requires a little force to pull free as there is thermal paste attaching it to the CPU cover

    in reply to: Arch linux #50372
    technosf
    Participant

    You followed the ExpressoBin instructions? Uboot ‘n all?

    Any issues with packages, non-working drivers?

    Way-to-go @mestrade!

Viewing 5 posts - 1 through 5 (of 5 total)
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