On 06/23/2018 04:39 AM, andy pugh wrote:
I am baffled by this discussion.
LinuxCNC relies on a real-time kernel in one of three flavours. RTAI,
Xenomai or PREEMPT-RT.
LinuxCNC supplies either RTAI or PREMPT-RT as part of the Live-CD
images for x86 and amd-64 platforms but does not supply such kernels
for ARM.
So anyone wanting to run LinuxCNC on ARM has to find a kernel first.
I believe that Machinekit might supply pre-built RT kernels for ARM.
Robert Nelson provides a RT kernel as part of his standard
distribution for the Beagles.
I THINK it is rt-preempt.
These are very easy to install, you download a script to a
Linux system, insert an SD card to an SD reader, and run the
script. In about 20 minutes (depending on your net
connection) the SD card is ready to plug into the Beagle
Bone and boot. LinuxCNC is one of the standard apps on that
system.
Jon
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