homing: allow homing_accel to be configurable

[rogerlz]

Untested, depends on #472

As suggested in #395

I also took the opportunity to rename _set_current_homing to _set_homing_current to match the new method added and make it more readable.

[Zeanon]

any reason for the try/finally here?
since we dont catch any errors we are going into estop if one occurs so no need for the finally right?

Also wouldnt it be cleaner to use with instead?

[rogerlz]

I want to make sure that homing_accel always resets regardless of the deeper exceptions

[MSzturc]

This might not be the ideal place to discuss this issue, but it would be beneficial to have the ability to overwrite TMC driver parameters for homing. Specifically, the LDO 2804 drivers require fairly aggressive settings to achieve decent performance. However, these settings generate significant noise during homing, making consistent stall detection quite challenging.

I suggest adding a homing options to configure the following parameters: driver_TBL, driver_TOFF, driver_HSTRT, driver_HEND, and driver_TPFD.

[rogerlz]

This might not be the ideal place to discuss this issue, but it would be beneficial to have the ability to overwrite TMC driver parameters for homing. Specifically, the LDO 2804 drivers require fairly aggressive settings to achieve decent performance. However, these settings generate significant noise during homing, making consistent stall detection quite challenging.

I suggest adding a homing options to configure the following parameters: driver_TBL, driver_TOFF, driver_HSTRT, driver_HEND, and driver_TPFD.

I suggest opening a feature request on discord or github issue to track this.. thanks