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grblHAL / iMXRT1062

grblHAL driver for NXP iMXRT1062 (Teensy 4.x)
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z-axis TLO and probing report with bCNC #50

Closed rschell closed 2 years ago

rschell commented 2 years ago

Trying to chase down two issues interfacing with bCNC (building with Arduino 1.8.19 IDE):

  1. The TLO default report setting in grbl/config.h lists Z-axis as the default. Without changing config.h, the TLO report includes XYZ coordinates (for a three axis machine), bCNC is expecting only the Z coordinate, so the TLO always gets set to 0.0 (the X-axis value). I have changed config.h in my local version to only report the Z-axis and have modified bCNC to accept any number of axis. This one I have solved, but how would I select the Z-axis TLO report in your new build system?
  2. When bCNC performs an autoleveling scan, it issues a G38.2 command and waits for its completion. Apparently, it expects a PRB response but in my grblhal version none is given. I can force a response using $#, by modifying bCNC, but I thought this was planned for. Is there a way to get a PRB response on the completion of the probe? I have tried several ways of changing DEFAULT_REPORT_PROBE_COORDINATES, but still don't receive a PRB response on the probe completion. Any tricks I can try?

Haven't tried the new build system yet, would it be able to accommodate these types of customization's?

terjeio commented 2 years ago

... how would I select the Z-axis TLO report in your new build system?

Everything that is configurable via #define symbols can be added to the Web Builder UI. My plan is to add tabs to the UI, likely one for Advanced features, in order to keep it simple for most users. IMO this option would belong in that.

I have tried several ways of changing DEFAULT_REPORT_PROBE_COORDINATES, but still don't receive a PRB response on the probe completion.

Including restoring settings to default?

You can also change the behaviour at run time with $10, $$=10 will list the available flags.

Haven't tried the new build system yet, would it be able to accommodate these types of customization's?

Yes - but I need more time, I have just started...

rschell commented 2 years ago

Thanks very much, the $10 setting was the problem.

terjeio commented 2 years ago

The Web Builder has now been updated with new tabs, more to come later.

rschell commented 2 years ago

Made my first hex file, testing now using bCNC. Appears to be operating correctly. Nice to have an alternative build system.

Options used: 3-axis, Y-ganged auto squaring, Z-axis TLO.