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grblHAL core code and master Wiki
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Question about the maximum value of the X-axis data #302

Closed CHTUZKI closed 1 year ago

CHTUZKI commented 1 year ago

HI. If I send the following command with iosender, will grblhal make an error

G0 X10000000000000000000 F100

If the data of the X-axis overflows, will it continue to run from zero?, and will the X-axis controlled by grblhal stop at the moment the data overflows? Or will it keep running?

this would be a strange question😁

CHTUZKI commented 1 year ago

I want the X axis to rotate forever, can grblhal do it

terjeio commented 1 year ago

No, the step counters are 32 bit signed integers - max number of revolutions is thus -2,147,483,648 to 2,147,483,647 divided by steps per revolution. And I have no idea what will happen on an under/overflow...

CHTUZKI commented 1 year ago

Thank you for your answer.

grblhal is very powerful and can be extended very flexibly. Can grblhal export the API of a certain module or function？, for example: I only want to use the motor control part of grblhal, because the motor control part of grblhal is very good, can this part be separated and made into a library or export API .

If I use the whole grblhal as a motion parser, it will make the project huge and complicated.

I saw the gcode parsing part that you isolated。Whether it is feasible to separate the motor control part of grblhal, I want to try it.

terjeio commented 1 year ago

All functions not marked static are available already, if you provide the correct parameters for them you can call them. Some documentation can be found here (work in slow progress), this and more in the code itself.

You can control the motors directly by calling the HAL API - mainly the hal.stepper_* functions. Next level above that will be the planner as planning and step generation is tigthly coupled.