#linuxcnc-devel Logs

Jan 21 2020

04:55 AM jthornton: I use Octoprint on my raspberry pi 3 with my ender
08:21 AM jepler: yeah though this thing appears to do the step generation in realtime on the pi, which I thought was interesting
09:06 AM burklefoo: Some people have done this via (perhaps timer triggered) DMA
09:09 AM burklefoo: you could theoretically do the reverse for encoder reading (read VIA timer triggered DMA, parse data stream at servo thread intervals)
11:48 AM JT-Shop: 27 transfers later
11:58 AM cerna: burklefoo: Do you know of any paper about this?
12:00 PM burklefoo: Not off hand, but there's a thread in the LinuxCNC forum about it
12:01 PM burklefoo: Might be what PyCNC or whatever its called uses
12:01 PM burklefoo: I think I even suggested it a few years ago
12:02 PM burklefoo: (having done DMA driven video in the 1990s)
12:04 PM burklefoo: (copying 70s stuff from DEC and Xerox)