DISTINCT_E_FACTORS compile error with input shaping

[tombrazier]

Description

When DISTINCT_E_FACTORS is used, the comment in Configuration.h says

/**
 * With this option each E stepper can have its own factors for the
 * following movement settings. If fewer factors are given than the
 * total number of extruders, the last value applies to the rest.
 */

The logic for calculating input shaping buffer size does not take this into account and this can cause a compile time error.

This PR essentially copies the following logic from settings.cpp into the input shaping buffer size calculation logic.

Marlin/Marlin/src/module/settings.cpp

Lines 1858 to 1860 in 2bac783

	planner.settings.max_acceleration_mm_per_s2[i] = in ? tmp1[i] : pgm_read_dword(&_DMA[ALIM(i, _DMA)]);
	planner.settings.axis_steps_per_mm[i] = in ? tmp2[i] : pgm_read_float(&_DASU[ALIM(i, _DASU)]);
	planner.settings.max_feedrate_mm_s[i] = in ? tmp3[i] : pgm_read_float(&_DMF[ALIM(i, _DMF)]);

Requirements

Enable DISTINCT_E_FACTORS and do not specify values for all extruders in DEFAULT_AXIS_STEPS_PER_UNIT or DEFAULT_MAX_FEEDRATE.

Benefits

The code compiles.

Configurations

See above.

Related Issues

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