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grblHAL / LPC176x

grblHAL driver for LPC1968 and LPC1769
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Probe settings not propogating? #50

Open paukstelis opened 2 months ago

paukstelis commented 2 months ago

Board: BTT SKR Turbo 1.4

With both DEFAULT_PROBE_SIGNAL_INVERT and DEFAULT_PROBE_SIGNAL_DISABLE_PULLUP set to On I expected to have $6 and $19 available. However, these don't appear to be available (older grblHal version I have running on a different board does have these and I can use the probe just fine). I haven't been able to get the probe to trigger at all, even simply by jumpering the defined probe pin.

paukstelis commented 2 months ago

It seems like this is related to trying to change the probe port and pin. If I try to use Port 1 and any number of pins it will not work. But the default port and pin (0.10) does work. it would be more convenient for this particular to probe to use any of the endstop pins since they already have 5V and GND in the header as well. Using the Probe port means having to split between two connectors.

terjeio commented 2 months ago

If I try to use Port 1 and any number of pins it will not work.

Port 1 can be used when I test with a SKR 1.3 board. What is the voltage on the probe pin when the probe is not connected? If 0V you may have disabled the pullup by setting $19=1?