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[01:03:37] <KGB-linuxcnc> 03chrisinnanaimo 05v2.5_branch e484e2d 06emc2 10src/hal/components/mux16.comp * mux16 -fix the debounce option
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[11:02:25] <jthornton> cradek, nope
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[12:15:46] <jthornton> when I add the hal gremlin to a screen I get several errors
[12:16:03] <jthornton> this prints 3 times (gui7:32507): GtkGLExt-CRITICAL **: gtk_widget_get_gl_window: assertion `GTK_WIDGET_REALIZED (widget)' failed
[12:16:27] <jthornton> then this Traceback (most recent call last):
[12:16:28] <jthornton> File "/usr/lib/pymodules/python2.6/gladevcp/hal_gremlin.py", line 66, in <lambda>
[12:16:28] <jthornton> self.gstat.connect('file-loaded', lambda w, f: self._load(f))
[12:16:28] <jthornton> File "/usr/lib/pymodules/python2.6/rs274/glcanon.py", line 268, in inner
[12:16:28] <jthornton> self.deactivate()
[12:16:29] <jthornton> File "/usr/lib/pymodules/python2.6/gremlin.py", line 153, in deactivate
[12:16:30] <jthornton> gldrawable.gl_end()
[12:16:32] <jthornton> AttributeError: 'NoneType' object has no attribute 'gl_end'
[12:29:47] <awallin> do you pass in gldrawable yourself? it seems uninitialized
[12:32:19] <jthornton> I just popped it into glade then ran the GUI
[12:35:27] <awallin> I guess it expects to draw things in some kind of OpenGL graphics view. I'm not sure if that is included in gremlin or not
[12:35:59] <jthornton> maybe because I didn't load a silly splash screen?
[12:36:43] <jthornton> seems like the code should check to see if a file is loaded before trying to display it
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[15:57:51] <KGB-linuxcnc> 03andy 05v2.5_branch 462ef14 06emc2 10src/hal/drivers/mesa-hostmot2/hostmot2.c * Allow for zero sserial ports to be enabled.
[16:22:33] <awallin> andypugh: do you have any experience with SPI devices and the mesa fpgas?
[16:23:33] <andypugh> Only second-hand. I wrote the driver for the 7i65, and that uses SPI. But I have never seen one.
[16:24:49] <andypugh> have a look at src/hal/drivers/mesa_7i65.comp for a file which it should be relatively easy to modify.
[16:29:15] <andypugh> Note that that is a strange comp, it doesn't export any functions. Instead it tells the main Hostmot2 driver to call it as, and when, required.
[16:31:01] <awallin> I would be interested in some custom devices (e.g. 18 or 24-bit adc etc) and I'm hoping a lot of the fpga-code and driver code for SPI would already exist
[16:34:01] <andypugh> You should be able to wire the SPI devices direct to Mesa-card pins, slightly modify that comp file, and read the data straight into HAL.
[16:34:43] <awallin> the first application would be pid-loops at about servo (1ms) thread speed
[16:34:53] <andypugh> In fact, if you use AD5754 and AD7329 then there might not even be any need to modify the driver.
[16:35:09] <awallin> later I might be interested in a fast pid-loop on the fpga, or other custom fpga-code
[16:35:33] <awallin> yes I saw the reference to those AD chips. the DAC might be usable as is
[16:36:50] <andypugh> That driver was written as a framework for customisation. A dedicate 7i65 driver would have been a lot easier.
[16:38:38] <awallin> so both read and write over SPI should be customizable to 18 or 24 bit easily?
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[16:38:56] <andypugh> Trivially.
[16:39:11] <andypugh> More that 32 bits is where the trouble starts
[16:39:35] <awallin> sound great. did you alsow work with xilinx webpack and create your own bit-files? I haven't done that but may need to do that also
[16:40:46] <andypugh> I have done it a bit, but I have only been succesful using the LinuxCNC repo, not the the Mesa one. And the LinuxCNC version os a bit outdated.
[16:41:02] <andypugh> (That's using CLI, not the GUI)
[16:41:17] <andypugh> I set up a VM specifically for that task.
[16:41:31] <awallin> windows?
[16:41:47] <andypugh> Linux.
[16:42:19] <andypugh> All the stuff I do, I am actually sat at a Mac.
[16:42:45] <awallin> oh ok. I think I got xilinx ise webpack installed on ubuntu 12.10
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