@Modest-Polykarpovich said in [Resolved] How use select()/poll() with GPIO?: [...] Could you please send me 100% work your code? I see that you solved the problem already - cool! Bus just in case - my implementation is this one, which is part of a larger set of utilities handling other peripherals such as i2c, spi, pwm and a lot of other stuff, based on a common mainloop for timers and I/O polling.

@Ammar-Assad using shell edit: I forgot to mention Baud rate, you should use 115200 while read -r line < /dev/ttyS1; do echo $line # do whatever you want with $line done using "C" termios libriary tldp Serial-Programming-HOWTO

@Alex-Butler @Douglas-Kryder @Daniel-Bachmann Any update? did you get it working somehow?

@Peter-Buelow nice work Peter and thank you for sharing your work.

Looks like this is the most recent thread on GPIO Interrupts. What's the current status on GPIO interrupt support on the Omega2? In particular: what are the typical latencies associated with the sysfs method? are there any advantages for the kmod-gpio-irq path? if so, is there a reliable way to use kmod-gpio-irq on the Omega2 or is it likely to end in the dead-ends reported in this thread? Cheers, Heath

Ahh cool. Yes.. I wondered if someone had written a library for it. Thanks!

@Keitaro UPDATE: That's the problem: http://community.onion.io/topic/2194/gpio-interrupts-omega2

FYI: Code on https://github.com/KitBishop/java-gpio has now been updated to version 1.0.1 Changes are: Fixed code bug in expansion led access Corrected documentation for running java-gpio.jar and java-expled.jar

FYI: I have now added an example script file for use with the new-gpio program. The example file can be found at https://github.com/KitBishop/new-gpio/blob/master/source/new-gpio/new-gpio-example.txt Documentation for its use can be found in section 7.2. Scripting Example for new-gpio Program in the updated documentation at https://github.com/KitBishop/new-gpio/blob/master/new-gpio.pdf

@Christiaan-Scholtz Its all in the file new-gpio-1.2.tar.bz2 that is attached to the post: https://community.onion.io/topic/143/alternative-c-code-for-gpio-access-now-with-interrupts/5 Good luck with it

@Lazar-Demin Absolutely fantastic! Thank you very much Have upgraded to b266 and everything works perfectly - including my GPIO IRQ and test program. My IRQ code is basically an extension to the code I have previously posted for new GPIO access (https://community.onion.io/topic/143/alternative-c-code-for-gpio-access) with the addition of IRQ handling capabilities. Because it may be of use to others, I will do the following: Send the test program and needed library with some basic documentation on its use in a separate post Later, update the package and details in https://community.onion.io/topic/143/alternative-c-code-for-gpio-access with the latest sources and full documentation

@Boken-Lin Thanks - had already found this. I think some of my issues to date have been to do with my mistakes in building kernel code using the OenWRT cross compilation - I think I had some settings wrong. Am in the process of trying again with git://git.openwrt.org/15.05/openwrt.git - will let you know how things go.

@Kit-Bishop No problem

FYI: Code on https://github.com/KitBishop/new-gpio has now been updated to version 1.3.3 Changes are: Added rgb <r> <g> <b> parameters to new-gpio expled and new-expled to provide the expansion led settings as 3 decimal values in the range 0..100

@Boken-Lin That was an amazingly quick response! Many thanks, I'll take a look and come back to you if I have any questions