[BUG] Cannot use negative values for Z_SAFE_HOMING_X_POINT & #define MIN_PROBE_EDGE

[ZS1FJK]

Hello When setting Z_SAFE_HOMING_X_POINT (negative value) & #define MIN_PROBE_EDGE (negative value) I get an error when compiling.

error is as follows

sketch\src\module/planner.h:271:84: error: could not convert '-19' from 'int' to 'XYval::'

     static constexpr xy_pos_t level_fulcrum = { X_TILT_FULCRUM, Y_TILT_FULCRUM };

                                                                                ^

sketch\src\module/planner.h:271:84: error: too many initializers for 'const xy_pos_t {aka const XYval}'

I am using Arduino 1.9.0 to compile and have tried the stable release also. The config is for a Lulzbot Taz 6.

When i change the value to positive is compiles fine.

Marlin.zip

[Powerprobot]

What the Hell you need a negative Homing Point? If you need the 0-Point in the middle or no matter where, you can configure at BED_CENTER_AT_0_0 and:

// Travel limits (mm) after homing, corresponding to endstop positions.
#define X_MIN_POS 0
#define Y_MIN_POS 0
#define Z_MIN_POS 0
#define X_MAX_POS X_BED_SIZE
#define Y_MAX_POS Y_BED_SIZE

here you can use negative values. I hope you understand my explain.

[ZS1FJK]

My Z_SAFE_HOMING_X_POINT is next to the print bed. It is not inside the print area. Also the auto bed leveling is done outside of the print area.

[Powerprobot]

Define the movement length as bed-size and define X and Y_MIN_POS at the need negative value. This was my suggestion. Z-Safe off

[ZS1FJK]

I have done this. Should i then change the value for Z_SAFE_HOMING_X_POINT 1

` // The size of the print bed

define X_BED_SIZE (280)

define Y_BED_SIZE (280)

// Travel limits (mm) after homing, corresponding to endstop positions.

define X_MIN_POS -20

define Y_MIN_POS -20

define Z_MIN_POS 0

define X_MAX_POS 300

define Y_MAX_POS 303

define Z_MAX_POS 270

`

[ZS1FJK]

I have looked at the Lulzbot repository and see that there config files are very similar to mine with the negative values.

[Powerprobot]

Have you a link or more information? And i think this is not a bug from Marlin in root configuration, it is a modification from lulzbot and here ist not the right place to discuss a lulzbot modification.

[ZS1FJK]

Here is a link to the config files. https://code.alephobjects.com/diffusion/MARLIN/browse/devel/config/examples/AlephObjects/Oliveoil_TAZ6/Tilapia_SingleExtruder/

[ZS1FJK]

I Changed Z_SAFE_HOMING_X_POINT 1 and i get this error.

sketch\src\module/planner.h:271:84: error: could not convert '1' from 'int' to 'XYval::'

     static constexpr xy_pos_t level_fulcrum = { X_TILT_FULCRUM, Y_TILT_FULCRUM };

                                                                                ^

sketch\src\module/planner.h:271:84: error: too many initializers for 'const xy_pos_t {aka const XYval}'

[ZS1FJK]

Is this not a bug ?

[thinkyhead]

It is a bug! The solution is this:

static constexpr xy_pos_t level_fulcrum = { float(X_TILT_FULCRUM), float(Y_TILT_FULCRUM) };

I'll patch it in a moment.

[thinkyhead]

Hmm… Well, that should have worked. But the compiler Arduino is using is very confused. I think this is actually turning out to be a compiler bug.

[thinkyhead]

While this is definitely a compiler bug, it was not hard to work around. Marlin has now been patched so should build successfully for Archim 2.

[ZS1FJK]

@thinkyhead Unfortunately Platform IO does not work for archim boards. Thank you for patching. I will compile tonight when i get home.

[github-actions[bot]]

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