Is there a base reason to use Java in this project? By design Java has a high separation from the hardware. Accessing the hardware (GPIo) is not simple. Doing this on Linux is anyhow not simple due the same reason: Linux separates the userspace from the hardware.
You better look into C/C++ for hardware access. The ultimate speed of the application will also improve. Gwen Op do 24 jun. 2021 om 08:08 schreef Radovan Chovan <rado...@gmail.com>: > Thanks. > I need to use Debian 10.3 and display GEN4-4DCAPE-70CT-CLB from 4D Systems. > I will try another project for java gpio https://github.com/koert/gpio > Do you know something else like libbulldog? > > Dátum: streda 23. júna 2021, čas: 16:32:35 UTC+2, odosielateľ: > RobertCNelson > >> On Wed, Jun 23, 2021 at 8:39 AM Radovan Chovan <rad...@gmail.com> wrote: >> > >> > In the past I used java gpio library libbulldog. >> > >> > description from author of library: >> > https://groups.google.com/g/beagleboard/c/QkdoypqrTPQ/m/L7URLQ1dCAAJ >> > >> > http://www.libbulldog.org ... page not found >> > >> > Now I am using Debian 10.3 with kernel 4.19.94-ti-r42 in Beaglebone >> Black. >> > >> > Board is detected via command Board board = Platform.createBoard(); >> > but now I get error: >> > >> > java.lang.ArrayIndexOutOfBoundsException: 0 >> > at >> org.bulldog.beagleboneblack.sysfs.BBBSysFs.getCapeManager(BBBSysFs.java:23) >> > ... >> > at org.bulldog.core.platform.Platform.createBoard(Platform.java:13) >> > >> > From BBBSysFs file: >> > >> > private String SYSFS_DEVICES_PATH = "/sys/devices"; >> > return getFilesInPath(this.SYSFS_DEVICES_PATH, "bone_capemgr")[0]; >> > >> > but path sys/devices/bone_capemgr doesn't exist. >> > >> > I think problem is in newer kernel: >> > >> https://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Where_did_the_slots_file_go.3F >> >> Correct, kernel is too new for that library.. >> >> Reboot with 3.8.13, (if it even boots..) >> >> Regards, >> >> -- >> Robert Nelson >> https://rcn-ee.com/ >> > -- > 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. > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/08bc6689-17dd-47f6-bcad-094c9774ee53n%40googlegroups.com > <https://groups.google.com/d/msgid/beagleboard/08bc6689-17dd-47f6-bcad-094c9774ee53n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- 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. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CAFfeaG9DU-haRtLeEEf%2Bt9%2Bw5Y48tsibUApqnmPmiJV%3DtA%3DS1A%40mail.gmail.com.
