Check out Charles Steinkuehler's beaglebone-universal-io
https://github.com/cdsteinkuehler/beaglebone-universal-io
Accessing the PRU functionality is just "config-pin overlay
cape-universal" and to configure, for example, P8-15 as a GPI input,
"config-pin P8-15 pruin". Choose pins that are not used by the hdmi or
emmc, or disable the hdmi [and/or emmc] functionality by modifying
/boot/uboot/uEnv.txt [look for cape_disable].
Depending upon the age of your version of Debian, you might need to
download from the repository to get good versions of the cape-universal
overlay and config-pin. If you download and install, Debian has it own
version of the cape-universal overlay so rename the dtb before moving it
to /lib/firmware. Also, config-pin might be located in several places.
So when you install it in /usr/bin, be sure to start it with the
complete path name "/usr/bin/config-pin".
Chad
On 12/20/2014 9:39 PM, Charles Bergeron wrote:
Hello,
I'm looking for how to enable the PRU on my beaglebone black, with
pre-packaged Debian installed on it. To get it enabled on my Angstrom
bone, I had simply manually edited the device tree file,
am335x-boneblack.dtb, found in /boot. However, I can not find this
file, or an obvious equivalent, on my Debian bone. Any ideas?
The error I get when trying to use the PRU now is "prussdrv_open open
failed"
Thanks!
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