#linuxcnc-devel | Logs for 2018-11-20
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[04:08:09] <rmu> self-modifying bitstreams!
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[04:39:34] <rmu> I have a strange problem with the recently activated automatic toolchanger, perhaps somebody can point me where to look. I'm using gmoccapy as gui.
[04:40:44] <rmu> The toolchanging process uses all sorts of inductive sensors for feedback and checks if pocket to put tool is empty, pocket is empty after pickup etc... , because of the design of this thing, it is easy to crash something if not carefully monitoring and waiting for these feedbacks
[04:41:18] <rmu> the strange thing is that programs that involve a toolchange seem to look at these feedback pins even while generating a preview
[04:42:38] <rmu> so given tool 0 is in spindle and program wants to change to tool 1 and then back to tool 0 it complains that pocket for tool 0 is empty
[04:48:25] <rmu> toolchanger is implemented with remapped M6
[04:48:50] <rmu> stdglue python prolog/epilog and rest is ngc files
[04:49:41] <rmu> second strange thing is that M73 in this ngc file doesn't work
[04:49:57] <rmu> while preview generation
[04:50:26] <rmu> i would have asked on #linuxcnc, but that channel seems to mostly contain noise
[04:54:56] <rmu> communication with toolchanger hardware happens via motion digital-io pins and M6x codes
[04:56:18] <rmu> programs execute fine per se, but i can't get a preview
[05:01:53] <rmu> 2.8 master, pretty recent
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[06:14:32] -linuxcnc-github:#linuxcnc-devel- [13linuxcnc] 15Attila1000 commented on issue #314: Hello, ... 02 https://github.com/LinuxCNC/linuxcnc/issues/314#issuecomment-440237093
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[06:35:16] -linuxcnc-github:#linuxcnc-devel- [13linuxcnc] 15Attila1000 commented on issue #314: Hello, ... 02 https://github.com/LinuxCNC/linuxcnc/issues/314#issuecomment-440237093
[06:35:47] -linuxcnc-github:#linuxcnc-devel- [13linuxcnc] 15Attila1000 commented on issue #314: Hello, ... 02 https://github.com/LinuxCNC/linuxcnc/issues/314#issuecomment-440237093
[07:50:58] <rene_dev_> rmu the macro needs a check for #<_task>
[07:51:15] <rene_dev_> otherwise it also does things in the preview
[07:53:57] <rene_dev_> o100 if [#<_task> EQ 0]
[07:53:57] <rene_dev_> (debug, Task is null)
[07:53:57] <rene_dev_> o100 return [999]
[07:53:57] <rene_dev_> o100 endif
[08:26:49] <rmu> rene_dev_: thanks. exactly what i was looking for. not sure why i didn't find it, should get more coffee perhaps
[09:17:06] -linuxcnc-github:#linuxcnc-devel- [13linuxcnc] 15c-morley pushed 2 new commits to 06qt5vcp_py2: 02 https://github.com/LinuxCNC/linuxcnc/compare/7b44ccdec062...529406ddff04
[09:17:06] -linuxcnc-github:#linuxcnc-devel- 13linuxcnc/06qt5vcp_py2 14e8f10ed 15Chris Morley: qtvcp -fix HAL pin state when button was checkable...
[09:17:06] -linuxcnc-github:#linuxcnc-devel- 13linuxcnc/06qt5vcp_py2 14529406d 15Chris Morley: qtvcp -versa_probe work...
[12:01:39] <jepler> quick reboot on the forum coming up
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[17:33:15] <rmu> i got tinkerboard "running" with hm2_spi and 7i90. needs some changes to hm2_spi or probably a driver directly for rockchip spi hardware like rpi, currently watchdog bites about once per minute
[17:44:48] <pcw_mesa> what changes would be needed for hm2_spi? its pretty generic
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[17:47:10] <seb_kuzminsky> iirc most of the spi latency is in the kernel driver
[17:47:52] <rmu> pcw_mesa: 32bit transfers are not supported, so some byte-reordering and is needed
[17:48:37] <pcw_mesa> might be better to bit bang it if the SPI interface is so broken
[17:49:17] <pcw_mesa> or byte/nibble bang
[17:50:02] <rmu> like epp interface?
[17:50:25] <pcw_mesa> on some SOCs, GPIO can be toggled to 20 MHz or more
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[17:53:02] <pcw_mesa> since reads are synchronous anyway, you dont gain much with autonomous SPI hardware (you gain a bit on writes)
[17:53:32] <rmu> datasheet says hardware supports 16bit transfers, and has 32 "location" fifo
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[18:03:48] <rmu> the raspberry pi GPIOs could be toggled with 100s of MHz iirc, somebody built a software-defined fm transmitter that consists of a rpi and a piece of wire as antenna
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[19:27:55] <skunkworks> We just found out that you cannot copy users and group files from a 16.04 to 18.04... (migrating users and groups and samba...)
[19:28:24] <skunkworks> but - if you copy the files from 16.04 to 16.04 it works -> dist upgrade to 18.04
[19:28:27] <skunkworks> it works
[19:32:42] <skunkworks> once that worked - I stopped looking for reasons why it didn't work from 16.04 to 18.04. The format of one or all the files must have changed..)
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