helins / linux-gpio.java Goto Github PK

When I run the push buttons example, event.getId() always returns 0.
Any idea why that might be happening?
I'm running the code on an UP board, Ubuntu 16.04

I changed the device path and line numbers to match my board:

PATH_TO_DEVICE = "/dev/gpiochip4" ;
LINE_NUMBER_BUTTON_1 = 6 ;
LINE_NUMBER_BUTTON_2 = 5 ;

run output:

Starting push buttons...

Come on, press any button and keep pressin' ! Program will terminates after 15000 milliseconds of inactivity.

// when I push the 1st button (expected output: button 1)
1598314100861091495 button 0
1598314101203325508 button 0

// when I push the 2nd button (expected output: button 2)
1598314106373799169 button 0
1598314106500737447 button 0

Timeout, terminating program...

Hi,
I'm using your library to detect button press connected to gpio lines on imx6 board running embedded linux (buildroot). When I call GpioEventHandle requestEvent() to register the handle I'm getting IO exception: java.io.IOException: A requested line is already being used elsewhere
I read in your javadoc that request can be handled by one instance at a time. Is there a way to newly register request handle and overriding consumer which is already using it by setting new one? (FYI I did getconsumer on gpio line and it shows "sysfs")

Thanks

Hello,
I tested your lib with openjdk8. I recompiled all the dependencies and linux-gpio.java. It is working.
Nice job, I can count pulses in user space up to without any errors at 100hz (I didn't test greater frequency).

So, your default target can be java 8, it won't be a problem.
It can help other people that use old jdk for some reasons like me.

(this is really not a big issue)