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Make max_e_jerk an array to reduce CPU usage (#11118)

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This commit is contained in:
Andy Shaw
2018-06-27 03:38:31 +01:00
committed by Scott Lahteine
parent d13f76b7da
commit 3b3029c4bf
5 changed files with 29 additions and 8 deletions
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16
Marlin/src/module/planner.h
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@ -210,7 +210,11 @@ class Planner {
#if ENABLED(JUNCTION_DEVIATION)
static float junction_deviation_mm; // (mm) M205 J
#if ENABLED(LIN_ADVANCE)
static float max_e_jerk_factor; // Calculated from junction_deviation_mm
#if ENABLED(DISTINCT_E_FACTORS)
static float max_e_jerk[EXTRUDERS]; // Calculated from junction_deviation_mm
#else
static float max_e_jerk;
#endif
#endif
#else
static float max_jerk[XYZE]; // (mm/s^2) M205 XYZE - The largest speed change requiring no acceleration.
@ -750,9 +754,15 @@ class Planner {
#endif
#if ENABLED(JUNCTION_DEVIATION)
FORCE_INLINE static void recalculate_max_e_jerk_factor() {
FORCE_INLINE static void recalculate_max_e_jerk() {
#define GET_MAX_E_JERK(N) SQRT(SQRT(0.5) * junction_deviation_mm * (N) * RECIPROCAL(1.0 - SQRT(0.5)))
#if ENABLED(LIN_ADVANCE)
max_e_jerk_factor = SQRT(SQRT(0.5) * junction_deviation_mm * RECIPROCAL(1.0 - SQRT(0.5)));
#if ENABLED(DISTINCT_E_FACTORS)
for (uint8_t i = 0; i < EXTRUDERS; i++)
max_e_jerk[i] = GET_MAX_E_JERK(max_acceleration_mm_per_s2[E_AXIS + i]);
#else
max_e_jerk = GET_MAX_E_JERK(max_acceleration_mm_per_s2[E_AXIS]);
#endif
#endif
}
#endif