From 689bc994029c2029b094213bfeef66c763a42ba5 Mon Sep 17 00:00:00 2001
From: Scott Lahteine <github@thinkyhead.com>
Date: Sat, 24 Feb 2018 11:09:19 -0600
Subject: [PATCH] Correction to acceleration
---
Marlin/src/module/planner.cpp | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/Marlin/src/module/planner.cpp b/Marlin/src/module/planner.cpp
index edac7b9111..cb8f3ea99e 100644
--- a/Marlin/src/module/planner.cpp
+++ b/Marlin/src/module/planner.cpp
@@ -1294,10 +1294,10 @@ void Planner::_buffer_steps(const int32_t (&target)[XYZE]
}
block->acceleration_steps_per_s2 = accel;
block->acceleration = accel / steps_per_mm;
- block->acceleration_rate = (long)(accel * 16777216.0 / ((F_CPU) * 0.125)); // * 8.388608
+ block->acceleration_rate = (long)(accel * (4096.0 * 4096.0 / (HAL_STEPPER_TIMER_RATE)));
#if ENABLED(LIN_ADVANCE)
if (block->use_advance_lead) {
- block->advance_speed = ((F_CPU) * 0.125) / (extruder_advance_K * block->e_D_ratio * block->acceleration * axis_steps_per_mm[E_AXIS_N]);
+ block->advance_speed = (HAL_STEPPER_TIMER_RATE) / (extruder_advance_K * block->e_D_ratio * block->acceleration * axis_steps_per_mm[E_AXIS_N]);
#if ENABLED(LA_DEBUG)
if (extruder_advance_K * block->e_D_ratio * block->acceleration * 2 < block->nominal_speed * block->e_D_ratio)
SERIAL_ECHOLNPGM("More than 2 steps per eISR loop executed.");