Hello @ all,

I am trying my first steps with the PRUss on the BBG, but nothing I read 
here, will work.
Step by step:
1. I downloaded this image: 
bone-debian-8.6-lxqt-4gb-armhf-2016-11-06-4gb.img
and installed it on sd-card
2. run update, upgrade and dist-upgrade. So my kernel is
 4.4.30-ti-r64
3. cd /opt/source/dtb-4.4-ti && git-pull

Before, During and After this steps I tried to run the loader blink 
example: 
http://www.righto.com/2016/08/pru-tips-understanding-beaglebones.html
For this I compiled the loader, the blinker and the devicetree.
But the loader always reports
prussdrv_open() failed

capemanager tells me, that univ-emmc is loaded. I recompiled it, without 
acces to pru0,pru1,pruss,P8.11 and P8.16.
I then compiled the devicetree of above example and after reboot I didn't 
had any problems loading it.
Also I deactivated the universal cape in /boot/uEnv.txt to be sure 
univ-emmc doesn't make any problems.

I also compiled the PRU-blinker-program of TIs Hands-on-Lab. Placed them on 
the board, linked them with /lib/firmware/am335x-pru0-fw
and run modprobe pru_rproc / rmmod pru_rproc
In lsmod, I can see, if I run modprobe the driver is loaded and after rmmod 
the driver isn't loaded.
dmesg doesn't tell me anything.



What am I doing wrong? Can somebody help? Would be a great thing, else I 
will give up on this device. It took me too long, until I found this forum

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