#linuxcnc-devel | Logs for 2013-11-22

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[15:36:28] <KGB-linuxcnc> 03Francis Tisserant 05v2.5_branch 53b4cae 06linuxcnc 10docs/src/config/stepconf_fr.txt 10docs/src/gcode/gcode_fr.txt 10docs/src/hal/basic_hal_fr.txt 10docs/src/hal/pyvcp_fr.txt French doc. update to follow John * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=53b4cae
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[16:36:38] <micges> seb_kuzminsky: hi
[16:36:56] <micges> seb_kuzminsky: mesaflash supports 7i90 flashing
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[16:56:04] <seb_kuzminsky> hey micges
[16:56:05] <seb_kuzminsky> neat!
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[17:11:04] <micges> seb_kuzminsky: I must only clean command line options (got a little messy with all boards supported)
[17:11:17] <seb_kuzminsky> heh
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[17:11:27] <seb_kuzminsky> did you merge the debian packaging commits i sent you?
[17:11:40] <seb_kuzminsky> that's mesaflash3, right?
[17:11:46] <micges> not yet
[17:11:48] <micges> yes
[17:11:54] <seb_kuzminsky> ok
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[18:06:01] <KGB-linuxcnc> 03Francis Tisserant 05v2.5_branch 6f07a96 06linuxcnc 10docs/src/index_fr.tmpl French doc. update: added a link to Contributing to LinuxCNC * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=6f07a96
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[23:20:01] <andypugh> I am quite a long way down the line towards an unlimited-size tool database, moving the tool data out of NML and into an SQL database. (Those at Wichita will have seen this already, I am only a little further along now than then).
[23:21:04] <andypugh> I am actually at a stage where I could probably push a branch that works just like LinuxCNC does now, except with no limits on tool table size.
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[23:21:41] <andypugh> But, on reflection, I don't think I like it.
[23:24:33] <seb_kuzminsky> that's cool, andy
[23:24:53] <andypugh> The current idea is that you define a database structure and a "query file" in the INI. The database structure is standard SQL, the "query file" is a strange mix of XML and SQL, where many individual SQL queries are organised by sql-like tags, and a Python library knows how to pull out a query, subsitute-in the required values, and return a result.
[23:25:05] <seb_kuzminsky> the thing that annoys me the most about the current tooltable implementation is that the api is not well defined - it's not a clean interface
[23:25:35] <seb_kuzminsky> hrrm... that sounds strange
[23:26:10] <andypugh> Well, I have a clean API, but that is part of the problem. You can only do things to the tool table that my Python library knows about, and that also exists in you SQL query file...
[23:27:10] <andypugh> Part of what bothers me is that actually the interface between the Python code and C++ is rather untidy.
[23:27:40] <andypugh> (Possible solution, code the database access code in C++ instead).
[23:28:08] <andypugh> But part of this was to make it easier for folk to modify the tool database implementation.
[23:29:42] <andypugh> Currently I am trying to support both an almost exact copy of the current database and the rather more all-encompassing database that we came up with earlier in the year.
[23:30:58] <andypugh> But I am thinking perhaps I should drop that part, and just say "we think that this database covers all possible situations, you have to use this structure, but you can change how you access and use it"
[23:32:32] <andypugh> If I do that, then the C++ code can run database queries natively, without going via Python.
[23:34:03] <andypugh> Having said that, it is only iocontrol.cc that is bothering me at the moment, And I want to pull the tool handling there out, and put it into a HAL module.
[23:34:05] <seb_kuzminsky> how modular are you making the tooltable interface?
[23:34:26] <andypugh> I suspect _too_ modular.
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[23:34:58] <seb_kuzminsky> could the sql queries be hidden behind the api, as part of the modular tooltable handler?
[23:35:29] <andypugh> hence the query-module so that the same API can get data from any database structure.
[23:35:57] <seb_kuzminsky> i guess i dont understand the new architecture you're working on
[23:36:07] <andypugh> I am not sure I do :-)
[23:37:30] <andypugh> I started down this path expecting tear-ups along the way, I think my question is whether I should finish andpush (in a branch) what I think is a dead-end.
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[23:42:33] <andypugh> The problem with the catch-all database is that it makes tooledit look a bit funny.
[23:44:20] <andypugh> Though I guess that tooledit only really needs to see the tools by default, and the other stuff (which tool is in which magazine, which spindle can access which magazine) can be deeper down and, in fact, not even dispayed when unambiguous.
[23:45:34] <andypugh> It might even make sense for me to switch to working on tooledit, as that is likely to clarify the requirements.
[23:45:48] <Tom_itx> you're not dealing with the changer separately?
[23:46:47] <andypugh> Yes, and no.
[23:47:02] <Tom_itx> load the tools into the table and handle the prefetch order with changer code
[23:47:59] <andypugh> Step 1 is to demonstrate that sql can work identically to the current implementation. Actully mah has already done this, and deleted iocontrol, in one of his remap examples !
[23:48:02] <Tom_itx> the changer code could be hidden
[23:49:30] <andypugh> As I see it, a requirement for making this work "properly" (as I see it) is for a selecatble HAL module to be able to field the TOOL_SELECT and TOOL_CHANGE etc NML commands.
[23:50:28] <andypugh> A C or C++ module can do this (I think) but then integrators/users can't tweak to suit.
[23:51:01] <andypugh> As far as I know Python HAL modules can't field NML commands.
[23:52:07] <andypugh> if/when NML is replaced this limitation should go away
[23:53:06] <andypugh> Then something equivalent to iocontrol.cc will be a HAL module, like HALUI, but (I guess) loaded by default.
[23:53:48] <andypugh> Then, the integrator can (for example) choose to change tool on T, not M6.
[23:54:27] <Tom_itx> prefetch?
[23:54:43] <andypugh> Probably not.
[23:55:00] <Tom_itx> why would you change tool on T?
[23:55:07] <andypugh> Lathe
[23:56:30] <Tom_itx> lathe recognizes M6 as well doesn't it?
[23:56:54] <Tom_itx> i could see using T as a prefetch
[23:56:57] <andypugh> In LinuxCNC, yes. Not in Fanuc.
[23:57:01] <Tom_itx> on a separate line
[23:57:18] <Tom_itx> i'm looking at an okuma pocket reference showing M6 as toolchange
[23:57:36] <andypugh> Pre-fetch makes no sens on a lathe. T as pre-fetch already works in LinuxCNC
[23:58:11] <Tom_itx> some complex machines would use that
[23:58:16] <Tom_itx> not many