Hello Tom, It is my own A20 board design. I could not find anything (cheap) that has open drain drivers that can handle 5 amps, along with protected inputs and a FPGA. I made the board specific for realtime automation.
I call the distro LinuxInside. It is built from source. It uses opkg to distribute files. I use scripts, patches, and programs from many places, Debian, OpenWRT, Mikrotik, Gentoo, OpenDesktop and others. It has custom startup and shutdown programs that are application specific. The instance that I am using for Linuxcnc is using systemd at the moment, but I may change that. Part of the problem is related to udev. When a USB device is plugged in, udev receives messages from the kernel which may cause modules to be inserted. This is highly likely to cause an interruption of the realtime services. Part of the plan is to modify udev to watch the state of Linuxcnc and only take actions when the machine is in "off" state. There are a number of USB modules that can block things as well, so I will likely only include very limited USB support for things that are directly required for Linuxcnc like USB flash drives, buttons, shuttles, and such. -Neil- On Wed, Dec 30, 2015 at 10:56 AM, Thomas Gambone II <[email protected]> wrote: > Neil, > > Are you using an off the shelf A20 board, or did you spin your own? > > As for your distro, what was your approach? > > Did you start from scratch / Linux From Source approach, > ending up with your development copy being nearly identical to the > production copy? > > OR > > Did you start with a light / customizable distro like gentoo, which has > package management maintained on the dev side. > Then you copy a subset of the system to create your production distro? > > Continuing Jepler's work with the Odroid boards or similar to make a robust > embedded controller appliance with LinuxCNC would be excellent to learn. > > Thank you, > -Tom > > > ------------------------------------------------------------------------------ _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
