From 000f824e39283a18f31a84fb6a0941c1b306d6e7 Mon Sep 17 00:00:00 2001
From: Yuri D'Elia <wavexx@thregr.org>
Date: Mon, 18 May 2020 01:11:59 +0200
Subject: [PATCH] Increase E-jerk LA10->15 flattened zone

Increase the flattened response in the e-jerk conversion from the 1-4.5
region to 0.3-4.5 (same slope). This brings a 0.3 LA10 e-jerk to a 3.45
LA15 equivalent.

This will better handle the legacy Pretty PETG/CFPETG v3 profiles.
---
 Firmware/la10compat.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Firmware/la10compat.cpp b/Firmware/la10compat.cpp
index 91865925..98522f64 100644
--- a/Firmware/la10compat.cpp
+++ b/Firmware/la10compat.cpp
@@ -78,10 +78,10 @@ float la10c_jerk(float j)
         return j;
 
     // bring low E-jerk values into equivalent LA 1.5 values by
-    // flattening the response in the (1-4.5) range using a piecewise
+    // flattening the response in the (0.3-4.5) range using a piecewise
     // function. Is it truly worth to preserve the difference between
     // 1.5/2.5 E-jerk for LA1.0? Probably not, but we try nonetheless.
-    j = j < 1.0? j * 3.625:
+    j = j < 0.3? j * 11.5:
         j < 4.5? j * 0.25 + 3.375:
         j;