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by doubleodoug
Sat Sep 30, 2017 4:15 pm
Forum: Device Tree
Topic: pca9533 overlay with gpio
Replies: 2
Views: 2015

Re: pca9533 overlay with gpio

Hey Phil, thanks for the help and sorry for the delay, real life is a pain sometimes. With this fix I can get the modules loaded and get led1, led2, and led3 working as inputs (these are the pin names according to datasheet). They don't seem to work as outputs though (led0 in LED mode still works th...
by doubleodoug
Sat Sep 23, 2017 5:48 pm
Forum: Device Tree
Topic: pca9533 overlay with gpio
Replies: 2
Views: 2015

pca9533 overlay with gpio

Hello, I'm trying to add an overlay for a pca9533 LED driver, which I've got (mostly) working. LED0 is driving a backlight and LED1/2/3 are connected to some signals I'd like to read. The official linux documentation at http://elixir.free-electrons.com/linux/latest/source/Documentation/devicetree/bi...
by doubleodoug
Sat Sep 05, 2015 6:11 pm
Forum: Device Tree
Topic: gpio_keys device tree overlay
Replies: 20
Views: 7499

Re: gpio_keys device tree overlay

Nevermind, the systemd maintainers added this ability to the latest version. http://lists.freedesktop.org/archives/s ... 33800.html. This should filter down to raspbian eventually.
by doubleodoug
Sat Sep 05, 2015 1:10 am
Forum: Device Tree
Topic: gpio_keys device tree overlay
Replies: 20
Views: 7499

Re: gpio_keys device tree overlay

Did this get figured out? I've got the switch working and it's recognized as XF86PowerOff, same as a power button on a USB keyboard, but linux doesn't actually shutdown when this key is pressed and I have no idea how to turn that on. X11 will if configured to, but this doesn't help unless the X serv...

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